Adding upstream version 2.4.56.upstream/2.4.56

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 4671 insertions, 0 deletions

diff --git a/server/mpm/winnt/Makefile.in b/server/mpm/winnt/Makefile.in
new file mode 100644
index 0000000..f34af9c
--- /dev/null
+++ b/server/mpm/winnt/Makefile.in
@@ -0,0 +1 @@
+include $(top_srcdir)/build/special.mk
diff --git a/server/mpm/winnt/child.c b/server/mpm/winnt/child.c
new file mode 100644
index 0000000..05151a8
--- /dev/null
+++ b/server/mpm/winnt/child.c
@@ -0,0 +1,1306 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifdef WIN32
+
+#include "apr.h"
+#include <process.h>
+#include "httpd.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "http_config.h"  /* for read_config */
+#include "http_core.h"    /* for get_remote_host */
+#include "http_connection.h"
+#include "http_vhost.h"   /* for ap_update_vhost_given_ip */
+#include "apr_portable.h"
+#include "apr_thread_proc.h"
+#include "apr_getopt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "apr_shm.h"
+#include "apr_thread_mutex.h"
+#include "ap_mpm.h"
+#include "ap_config.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+#include "mpm_winnt.h"
+#include "mpm_common.h"
+#include <malloc.h>
+#include "apr_atomic.h"
+#include "apr_buckets.h"
+#include "scoreboard.h"
+
+#ifdef __MINGW32__
+#include <mswsock.h>
+
+#ifndef WSAID_ACCEPTEX
+#define WSAID_ACCEPTEX \
+  {0xb5367df1, 0xcbac, 0x11cf, {0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
+typedef BOOL (WINAPI *LPFN_ACCEPTEX)(SOCKET, SOCKET, PVOID, DWORD, DWORD, DWORD, LPDWORD, LPOVERLAPPED);
+#endif /* WSAID_ACCEPTEX */
+
+#ifndef WSAID_GETACCEPTEXSOCKADDRS
+#define WSAID_GETACCEPTEXSOCKADDRS \
+  {0xb5367df2, 0xcbac, 0x11cf, {0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
+typedef VOID (WINAPI *LPFN_GETACCEPTEXSOCKADDRS)(PVOID, DWORD, DWORD, DWORD,
+                                                 struct sockaddr **, LPINT,
+                                                 struct sockaddr **, LPINT);
+#endif /* WSAID_GETACCEPTEXSOCKADDRS */
+
+#endif /* __MINGW32__ */
+
+/*
+ * The Windows MPM uses a queue of completion contexts that it passes
+ * between the accept threads and the worker threads. Declare the
+ * functions to access the queue and the structures passed on the
+ * queue in the header file to enable modules to access them
+ * if necessary. The queue resides in the MPM.
+ */
+#ifdef CONTAINING_RECORD
+#undef CONTAINING_RECORD
+#endif
+#define CONTAINING_RECORD(address, type, field) ((type *)( \
+                                                  (char *)(address) - \
+                                                  (char *)(&((type *)0)->field)))
+#if APR_HAVE_IPV6
+#define PADDED_ADDR_SIZE (sizeof(SOCKADDR_IN6)+16)
+#else
+#define PADDED_ADDR_SIZE (sizeof(SOCKADDR_IN)+16)
+#endif
+
+APLOG_USE_MODULE(mpm_winnt);
+
+/* Queue for managing the passing of winnt_conn_ctx_t between
+ * the accept and worker threads.
+ */
+typedef struct winnt_conn_ctx_t_s {
+    struct winnt_conn_ctx_t_s *next;
+    OVERLAPPED overlapped;
+    apr_socket_t *sock;
+    SOCKET accept_socket;
+    char buff[2*PADDED_ADDR_SIZE];
+    struct sockaddr *sa_server;
+    int sa_server_len;
+    struct sockaddr *sa_client;
+    int sa_client_len;
+    apr_pool_t *ptrans;
+    apr_bucket_alloc_t *ba;
+    apr_bucket *data;
+#if APR_HAVE_IPV6
+    short socket_family;
+#endif
+} winnt_conn_ctx_t;
+
+typedef enum {
+    IOCP_CONNECTION_ACCEPTED = 1,
+    IOCP_WAIT_FOR_RECEIVE = 2,
+    IOCP_WAIT_FOR_TRANSMITFILE = 3,
+    IOCP_SHUTDOWN = 4
+} io_state_e;
+
+static apr_pool_t *pchild;
+static int shutdown_in_progress = 0;
+static int workers_may_exit = 0;
+static unsigned int g_blocked_threads = 0;
+static HANDLE max_requests_per_child_event;
+
+static apr_thread_mutex_t  *child_lock;
+static apr_thread_mutex_t  *qlock;
+static winnt_conn_ctx_t *qhead = NULL;
+static winnt_conn_ctx_t *qtail = NULL;
+static apr_uint32_t num_completion_contexts = 0;
+static apr_uint32_t max_num_completion_contexts = 0;
+static HANDLE ThreadDispatchIOCP = NULL;
+static HANDLE qwait_event = NULL;
+
+static void mpm_recycle_completion_context(winnt_conn_ctx_t *context)
+{
+    /* Recycle the completion context.
+     * - clear the ptrans pool
+     * - put the context on the queue to be consumed by the accept thread
+     * Note:
+     * context->accept_socket may be in a disconnected but reusable
+     * state so -don't- close it.
+     */
+    if (context) {
+        HANDLE saved_event;
+
+        apr_pool_clear(context->ptrans);
+        context->ba = apr_bucket_alloc_create(context->ptrans);
+        context->next = NULL;
+
+        saved_event = context->overlapped.hEvent;
+        memset(&context->overlapped, 0, sizeof(context->overlapped));
+        context->overlapped.hEvent = saved_event;
+        ResetEvent(context->overlapped.hEvent);
+
+        apr_thread_mutex_lock(qlock);
+        if (qtail) {
+            qtail->next = context;
+        } else {
+            qhead = context;
+            SetEvent(qwait_event);
+        }
+        qtail = context;
+        apr_thread_mutex_unlock(qlock);
+    }
+}
+
+static winnt_conn_ctx_t *mpm_get_completion_context(int *timeout)
+{
+    apr_status_t rv;
+    winnt_conn_ctx_t *context = NULL;
+
+    *timeout = 0;
+    while (1) {
+        /* Grab a context off the queue */
+        apr_thread_mutex_lock(qlock);
+        if (qhead) {
+            context = qhead;
+            qhead = qhead->next;
+            if (!qhead)
+                qtail = NULL;
+        } else {
+            ResetEvent(qwait_event);
+        }
+        apr_thread_mutex_unlock(qlock);
+
+        if (!context) {
+            /* We failed to grab a context off the queue, consider allocating
+             * a new one out of the child pool. There may be up to
+             * (ap_threads_per_child + num_listeners) contexts in the system
+             * at once.
+             */
+            if (num_completion_contexts >= max_num_completion_contexts) {
+                /* All workers are busy, need to wait for one */
+                static int reported = 0;
+                if (!reported) {
+                    ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf, APLOGNO(00326)
+                                 "Server ran out of threads to serve "
+                                 "requests. Consider raising the "
+                                 "ThreadsPerChild setting");
+                    reported = 1;
+                }
+
+                /* Wait for a worker to free a context. Once per second, give
+                 * the caller a chance to check for shutdown. If the wait
+                 * succeeds, get the context off the queue. It must be
+                 * available, since there's only one consumer.
+                 */
+                rv = WaitForSingleObject(qwait_event, 1000);
+                if (rv == WAIT_OBJECT_0)
+                    continue;
+                else {
+                    if (rv == WAIT_TIMEOUT) {
+                        /* somewhat-normal condition where threads are busy */
+                        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00327)
+                                     "mpm_get_completion_context: Failed to get a "
+                                     "free context within 1 second");
+                        *timeout = 1;
+                    }
+                    else {
+                        /* should be the unexpected, generic WAIT_FAILED */
+                        ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_os_error(),
+                                     ap_server_conf, APLOGNO(00328)
+                                     "mpm_get_completion_context: "
+                                     "WaitForSingleObject failed to get free context");
+                    }
+                    return NULL;
+                }
+            } else {
+                /* Allocate another context.
+                 * Note: Multiple failures in the next two steps will cause
+                 * the pchild pool to 'leak' storage. I don't think this
+                 * is worth fixing...
+                 */
+                apr_allocator_t *allocator;
+
+                apr_thread_mutex_lock(child_lock);
+                context = (winnt_conn_ctx_t *)apr_pcalloc(pchild,
+                                                     sizeof(winnt_conn_ctx_t));
+
+
+                context->overlapped.hEvent = CreateEvent(NULL, TRUE,
+                                                         FALSE, NULL);
+                if (context->overlapped.hEvent == NULL) {
+                    /* Hopefully this is a temporary condition ... */
+                    ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_os_error(),
+                                 ap_server_conf, APLOGNO(00329)
+                                 "mpm_get_completion_context: "
+                                 "CreateEvent failed.");
+
+                    apr_thread_mutex_unlock(child_lock);
+                    return NULL;
+                }
+
+                /* Create the transaction pool */
+                apr_allocator_create(&allocator);
+                apr_allocator_max_free_set(allocator, ap_max_mem_free);
+                rv = apr_pool_create_ex(&context->ptrans, pchild, NULL,
+                                        allocator);
+                if (rv != APR_SUCCESS) {
+                    ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf, APLOGNO(00330)
+                                 "mpm_get_completion_context: Failed "
+                                 "to create the transaction pool.");
+                    CloseHandle(context->overlapped.hEvent);
+
+                    apr_thread_mutex_unlock(child_lock);
+                    return NULL;
+                }
+                apr_allocator_owner_set(allocator, context->ptrans);
+                apr_pool_tag(context->ptrans, "transaction");
+
+                context->accept_socket = INVALID_SOCKET;
+                context->ba = apr_bucket_alloc_create(context->ptrans);
+                apr_atomic_inc32(&num_completion_contexts);
+
+                apr_thread_mutex_unlock(child_lock);
+                break;
+            }
+        } else {
+            /* Got a context from the queue */
+            break;
+        }
+    }
+
+    return context;
+}
+
+typedef enum {
+    ACCEPT_FILTER_NONE = 0,
+    ACCEPT_FILTER_CONNECT = 1
+} accept_filter_e;
+
+static const char * accept_filter_to_string(accept_filter_e accf)
+{
+    switch (accf) {
+    case ACCEPT_FILTER_NONE:
+        return "none";
+    case ACCEPT_FILTER_CONNECT:
+        return "connect";
+    default:
+        return "";
+    }
+}
+
+static accept_filter_e get_accept_filter(const char *protocol)
+{
+    core_server_config *core_sconf;
+    const char *name;
+
+    core_sconf = ap_get_core_module_config(ap_server_conf->module_config);
+    name = apr_table_get(core_sconf->accf_map, protocol);
+    if (!name) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ap_server_conf,
+                     APLOGNO(02531) "winnt_accept: Listen protocol '%s' has "
+                     "no known accept filter. Using 'none' instead",
+                     protocol);
+        return ACCEPT_FILTER_NONE;
+    }
+    else if (strcmp(name, "data") == 0) {
+        ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+                     APLOGNO(03458) "winnt_accept: 'data' accept filter is no "
+                     "longer supported. Using 'connect' instead");
+        return ACCEPT_FILTER_CONNECT;
+    }
+    else if (strcmp(name, "connect") == 0) {
+        return ACCEPT_FILTER_CONNECT;
+    }
+    else if (strcmp(name, "none") == 0) {
+        return ACCEPT_FILTER_NONE;
+    }
+    else {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ap_server_conf, APLOGNO(00331)
+                     "winnt_accept: unrecognized AcceptFilter '%s', "
+                     "only 'data', 'connect' or 'none' are valid. "
+                     "Using 'none' instead", name);
+        return ACCEPT_FILTER_NONE;
+    }
+}
+
+/* Windows NT/2000 specific code...
+ * Accept processing for on Windows NT uses a producer/consumer queue
+ * model. An accept thread accepts connections off the network then issues
+ * PostQueuedCompletionStatus() to awake a thread blocked on the ThreadDispatch
+ * IOCompletionPort.
+ *
+ * winnt_accept()
+ *    One or more accept threads run in this function, each of which accepts
+ *    connections off the network and calls PostQueuedCompletionStatus() to
+ *    queue an io completion packet to the ThreadDispatch IOCompletionPort.
+ * winnt_get_connection()
+ *    Worker threads block on the ThreadDispatch IOCompletionPort awaiting
+ *    connections to service.
+ */
+#define MAX_ACCEPTEX_ERR_COUNT 10
+
+static unsigned int __stdcall winnt_accept(void *lr_)
+{
+    ap_listen_rec *lr = (ap_listen_rec *)lr_;
+    apr_os_sock_info_t sockinfo;
+    winnt_conn_ctx_t *context = NULL;
+    DWORD BytesRead = 0;
+    SOCKET nlsd;
+    LPFN_ACCEPTEX lpfnAcceptEx = NULL;
+    LPFN_GETACCEPTEXSOCKADDRS lpfnGetAcceptExSockaddrs = NULL;
+    GUID GuidAcceptEx = WSAID_ACCEPTEX;
+    GUID GuidGetAcceptExSockaddrs = WSAID_GETACCEPTEXSOCKADDRS;
+    int rv;
+    accept_filter_e accf;
+    int err_count = 0;
+    HANDLE events[3];
+#if APR_HAVE_IPV6
+    SOCKADDR_STORAGE ss_listen;
+    int namelen = sizeof(ss_listen);
+#endif
+    u_long zero = 0;
+
+    apr_os_sock_get(&nlsd, lr->sd);
+
+#if APR_HAVE_IPV6
+    if (getsockname(nlsd, (struct sockaddr *)&ss_listen, &namelen) == SOCKET_ERROR) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_netos_error(),
+                     ap_server_conf, APLOGNO(00332)
+                     "winnt_accept: getsockname error on listening socket, "
+                     "is IPv6 available?");
+        return 1;
+   }
+#endif
+
+    accf = get_accept_filter(lr->protocol);
+    if (accf == ACCEPT_FILTER_CONNECT)
+    {
+        if (WSAIoctl(nlsd, SIO_GET_EXTENSION_FUNCTION_POINTER,
+                     &GuidAcceptEx, sizeof GuidAcceptEx, 
+                     &lpfnAcceptEx, sizeof lpfnAcceptEx, 
+                     &BytesRead, NULL, NULL) == SOCKET_ERROR) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_netos_error(),
+                         ap_server_conf, APLOGNO(02322)
+                         "winnt_accept: failed to retrieve AcceptEx, try 'AcceptFilter none'");
+            return 1;
+        }
+        if (WSAIoctl(nlsd, SIO_GET_EXTENSION_FUNCTION_POINTER,
+                     &GuidGetAcceptExSockaddrs, sizeof GuidGetAcceptExSockaddrs,
+                     &lpfnGetAcceptExSockaddrs, sizeof lpfnGetAcceptExSockaddrs,
+                     &BytesRead, NULL, NULL) == SOCKET_ERROR) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_netos_error(),
+                         ap_server_conf, APLOGNO(02323)
+                         "winnt_accept: failed to retrieve GetAcceptExSockaddrs, try 'AcceptFilter none'");
+            return 1;
+        }
+        /* first, high priority event is an already accepted connection */
+        events[1] = exit_event;
+        events[2] = max_requests_per_child_event;
+    }
+    else /* accf == ACCEPT_FILTER_NONE */
+    {
+reinit: /* target of connect upon too many AcceptEx failures */
+
+        /* last, low priority event is a not yet accepted connection */
+        events[0] = exit_event;
+        events[1] = max_requests_per_child_event;
+        events[2] = CreateEvent(NULL, FALSE, FALSE, NULL);
+
+        /* The event needs to be removed from the accepted socket,
+         * if not removed from the listen socket prior to accept(),
+         */
+        rv = WSAEventSelect(nlsd, events[2], FD_ACCEPT);
+        if (rv) {
+            ap_log_error(APLOG_MARK, APLOG_ERR,
+                         apr_get_netos_error(), ap_server_conf, APLOGNO(00333)
+                         "WSAEventSelect() failed.");
+            CloseHandle(events[2]);
+            return 1;
+        }
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00334)
+                 "Child: Accept thread listening on %pI using AcceptFilter %s",
+                 lr->bind_addr, accept_filter_to_string(accf));
+
+    while (!shutdown_in_progress) {
+        if (!context) {
+            int timeout;
+
+            context = mpm_get_completion_context(&timeout);
+            if (!context) {
+                if (!timeout) {
+                    /* Hopefully a temporary condition in the provider? */
+                    ++err_count;
+                    if (err_count > MAX_ACCEPTEX_ERR_COUNT) {
+                        ap_log_error(APLOG_MARK, APLOG_CRIT, 0, ap_server_conf, APLOGNO(00335)
+                                     "winnt_accept: Too many failures grabbing a "
+                                     "connection ctx.  Aborting.");
+                        break;
+                    }
+                }
+                Sleep(100);
+                continue;
+            }
+        }
+
+        if (accf == ACCEPT_FILTER_CONNECT)
+        {
+            char *buf;
+
+            /* Create and initialize the accept socket */
+#if APR_HAVE_IPV6
+            if (context->accept_socket == INVALID_SOCKET) {
+                context->accept_socket = socket(ss_listen.ss_family, SOCK_STREAM,
+                                                IPPROTO_TCP);
+                context->socket_family = ss_listen.ss_family;
+            }
+            else if (context->socket_family != ss_listen.ss_family) {
+                closesocket(context->accept_socket);
+                context->accept_socket = socket(ss_listen.ss_family, SOCK_STREAM,
+                                                IPPROTO_TCP);
+                context->socket_family = ss_listen.ss_family;
+            }
+#else
+            if (context->accept_socket == INVALID_SOCKET)
+                context->accept_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+#endif
+
+            if (context->accept_socket == INVALID_SOCKET) {
+                ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_netos_error(),
+                             ap_server_conf, APLOGNO(00336)
+                             "winnt_accept: Failed to allocate an accept socket. "
+                             "Temporary resource constraint? Try again.");
+                Sleep(100);
+                continue;
+            }
+
+            buf = context->buff;
+
+            /* AcceptEx on the completion context. The completion context will be
+             * signaled when a connection is accepted.
+             */
+            if (!lpfnAcceptEx(nlsd, context->accept_socket, buf, 0,
+                              PADDED_ADDR_SIZE, PADDED_ADDR_SIZE, &BytesRead,
+                              &context->overlapped)) {
+                rv = apr_get_netos_error();
+                if ((rv == APR_FROM_OS_ERROR(WSAECONNRESET)) ||
+                    (rv == APR_FROM_OS_ERROR(WSAEACCES))) {
+                    /* We can get here when:
+                     * 1) the client disconnects early
+                     * 2) handshake was incomplete
+                     */
+                    closesocket(context->accept_socket);
+                    context->accept_socket = INVALID_SOCKET;
+                    continue;
+                }
+                else if ((rv == APR_FROM_OS_ERROR(WSAEINVAL)) ||
+                         (rv == APR_FROM_OS_ERROR(WSAENOTSOCK))) {
+                    /* We can get here when:
+                     * 1) TransmitFile does not properly recycle the accept socket (typically
+                     *    because the client disconnected)
+                     * 2) there is VPN or Firewall software installed with
+                     *    buggy WSAAccept or WSADuplicateSocket implementation
+                     * 3) the dynamic address / adapter has changed
+                     * Give five chances, then fall back on AcceptFilter 'none'
+                     */
+                    closesocket(context->accept_socket);
+                    context->accept_socket = INVALID_SOCKET;
+                    ++err_count;
+                    if (err_count > MAX_ACCEPTEX_ERR_COUNT) {
+                        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf, APLOGNO(00337)
+                                     "Child: Encountered too many AcceptEx "
+                                     "faults accepting client connections. "
+                                     "Possible causes: dynamic address renewal, "
+                                     "or incompatible VPN or firewall software. ");
+                        ap_log_error(APLOG_MARK, APLOG_NOTICE, rv, ap_server_conf, APLOGNO(00338)
+                                     "winnt_mpm: falling back to "
+                                     "'AcceptFilter none'.");
+                        err_count = 0;
+                        accf = ACCEPT_FILTER_NONE;
+                    }
+                    continue;
+                }
+                else if ((rv != APR_FROM_OS_ERROR(ERROR_IO_PENDING)) &&
+                         (rv != APR_FROM_OS_ERROR(WSA_IO_PENDING))) {
+                    closesocket(context->accept_socket);
+                    context->accept_socket = INVALID_SOCKET;
+                    ++err_count;
+                    if (err_count > MAX_ACCEPTEX_ERR_COUNT) {
+                        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf, APLOGNO(00339)
+                                     "Child: Encountered too many AcceptEx "
+                                     "faults accepting client connections.");
+                        ap_log_error(APLOG_MARK, APLOG_NOTICE, rv, ap_server_conf, APLOGNO(00340)
+                                     "winnt_mpm: falling back to "
+                                     "'AcceptFilter none'.");
+                        err_count = 0;
+                        accf = ACCEPT_FILTER_NONE;
+                        goto reinit;
+                    }
+                    continue;
+                }
+
+                err_count = 0;
+                events[0] = context->overlapped.hEvent;
+
+                do {
+                    rv = WaitForMultipleObjectsEx(3, events, FALSE, INFINITE, TRUE);
+                } while (rv == WAIT_IO_COMPLETION);
+
+                if (rv == WAIT_OBJECT_0) {
+                    if ((context->accept_socket != INVALID_SOCKET) &&
+                        !GetOverlappedResult((HANDLE)context->accept_socket,
+                                             &context->overlapped,
+                                             &BytesRead, FALSE)) {
+                        ap_log_error(APLOG_MARK, APLOG_WARNING,
+                                     apr_get_os_error(), ap_server_conf, APLOGNO(00341)
+                             "winnt_accept: Asynchronous AcceptEx failed.");
+                        closesocket(context->accept_socket);
+                        context->accept_socket = INVALID_SOCKET;
+                    }
+                }
+                else {
+                    /* exit_event triggered or event handle was closed */
+                    closesocket(context->accept_socket);
+                    context->accept_socket = INVALID_SOCKET;
+                    break;
+                }
+
+                if (context->accept_socket == INVALID_SOCKET) {
+                    continue;
+                }
+            }
+            err_count = 0;
+
+            /* Potential optimization; consider handing off to the worker */
+
+            /* Inherit the listen socket settings. Required for
+             * shutdown() to work
+             */
+            if (setsockopt(context->accept_socket, SOL_SOCKET,
+                           SO_UPDATE_ACCEPT_CONTEXT, (char *)&nlsd,
+                           sizeof(nlsd))) {
+                ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_netos_error(),
+                             ap_server_conf, APLOGNO(00342)
+                             "setsockopt(SO_UPDATE_ACCEPT_CONTEXT) failed.");
+                /* Not a failure condition. Keep running. */
+            }
+
+            /* Get the local & remote address
+             * TODO; error check
+             */
+            lpfnGetAcceptExSockaddrs(buf, 0, PADDED_ADDR_SIZE, PADDED_ADDR_SIZE,
+                                     &context->sa_server, &context->sa_server_len,
+                                     &context->sa_client, &context->sa_client_len);
+        }
+        else /* accf == ACCEPT_FILTER_NONE */
+        {
+            /* There is no socket reuse without AcceptEx() */
+            if (context->accept_socket != INVALID_SOCKET)
+                closesocket(context->accept_socket);
+
+            /* This could be a persistent event per-listener rather than
+             * per-accept.  However, the event needs to be removed from
+             * the target socket if not removed from the listen socket
+             * prior to accept(), or the event select is inherited.
+             * and must be removed from the accepted socket.
+             */
+
+            do {
+                rv = WaitForMultipleObjectsEx(3, events, FALSE, INFINITE, TRUE);
+            } while (rv == WAIT_IO_COMPLETION);
+
+
+            if (rv != WAIT_OBJECT_0 + 2) {
+                /* not FD_ACCEPT;
+                 * exit_event triggered or event handle was closed
+                 */
+                break;
+            }
+
+            context->sa_server = (void *) context->buff;
+            context->sa_server_len = sizeof(context->buff) / 2;
+            context->sa_client_len = context->sa_server_len;
+            context->sa_client = (void *) (context->buff
+                                         + context->sa_server_len);
+
+            context->accept_socket = accept(nlsd, context->sa_server,
+                                            &context->sa_server_len);
+
+            if (context->accept_socket == INVALID_SOCKET) {
+
+                rv = apr_get_netos_error();
+                if (   rv == APR_FROM_OS_ERROR(WSAECONNRESET)
+                    || rv == APR_FROM_OS_ERROR(WSAEINPROGRESS)
+                    || rv == APR_FROM_OS_ERROR(WSAEWOULDBLOCK) ) {
+                    ap_log_error(APLOG_MARK, APLOG_DEBUG,
+                                 rv, ap_server_conf, APLOGNO(00343)
+                                 "accept() failed, retrying.");
+                    continue;
+                }
+
+                /* A more serious error than 'retry', log it */
+                ap_log_error(APLOG_MARK, APLOG_WARNING,
+                             rv, ap_server_conf, APLOGNO(00344)
+                             "accept() failed.");
+
+                if (   rv == APR_FROM_OS_ERROR(WSAEMFILE)
+                    || rv == APR_FROM_OS_ERROR(WSAENOBUFS) ) {
+                    /* Hopefully a temporary condition in the provider? */
+                    Sleep(100);
+                    ++err_count;
+                    if (err_count > MAX_ACCEPTEX_ERR_COUNT) {
+                        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf, APLOGNO(00345)
+                                     "Child: Encountered too many accept() "
+                                     "resource faults, aborting.");
+                        break;
+                    }
+                    continue;
+                }
+                break;
+            }
+            /* Per MSDN, cancel the inherited association of this socket
+             * to the WSAEventSelect API, and restore the state corresponding
+             * to apr_os_sock_make's default assumptions (really, a flaw within
+             * os_sock_make and os_sock_put that it does not query).
+             */
+            WSAEventSelect(context->accept_socket, 0, 0);
+            err_count = 0;
+
+            context->sa_server_len = sizeof(context->buff) / 2;
+            if (getsockname(context->accept_socket, context->sa_server,
+                            &context->sa_server_len) == SOCKET_ERROR) {
+                ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_netos_error(), ap_server_conf, APLOGNO(00346)
+                             "getsockname failed");
+                continue;
+            }
+            if ((getpeername(context->accept_socket, context->sa_client,
+                             &context->sa_client_len)) == SOCKET_ERROR) {
+                ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_netos_error(), ap_server_conf, APLOGNO(00347)
+                             "getpeername failed");
+                memset(&context->sa_client, '\0', sizeof(context->sa_client));
+            }
+        }
+
+        sockinfo.os_sock  = &context->accept_socket;
+        sockinfo.local    = context->sa_server;
+        sockinfo.remote   = context->sa_client;
+        sockinfo.family   = context->sa_server->sa_family;
+        sockinfo.type     = SOCK_STREAM;
+        sockinfo.protocol = IPPROTO_TCP;
+        /* Restore the state corresponding to apr_os_sock_make's default
+         * assumption of timeout -1 (really, a flaw of os_sock_make and
+         * os_sock_put that it does not query to determine ->timeout).
+         * XXX: Upon a fix to APR, these three statements should disappear.
+         */
+        ioctlsocket(context->accept_socket, FIONBIO, &zero);
+        setsockopt(context->accept_socket, SOL_SOCKET, SO_RCVTIMEO,
+                   (char *) &zero, sizeof(zero));
+        setsockopt(context->accept_socket, SOL_SOCKET, SO_SNDTIMEO,
+                   (char *) &zero, sizeof(zero));
+        apr_os_sock_make(&context->sock, &sockinfo, context->ptrans);
+
+        /* When a connection is received, send an io completion notification
+         * to the ThreadDispatchIOCP.
+         */
+        PostQueuedCompletionStatus(ThreadDispatchIOCP, BytesRead,
+                                   IOCP_CONNECTION_ACCEPTED,
+                                   &context->overlapped);
+        context = NULL;
+    }
+    if (accf == ACCEPT_FILTER_NONE)
+        CloseHandle(events[2]);
+
+    if (!shutdown_in_progress) {
+        /* Yow, hit an irrecoverable error! Tell the child to die. */
+        SetEvent(exit_event);
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00348)
+                 "Child: Accept thread exiting.");
+    return 0;
+}
+
+
+static winnt_conn_ctx_t *winnt_get_connection(winnt_conn_ctx_t *context)
+{
+    int rc;
+    DWORD BytesRead;
+    LPOVERLAPPED pol;
+#ifdef _WIN64
+    ULONG_PTR CompKey;
+#else
+    DWORD CompKey;
+#endif
+
+    mpm_recycle_completion_context(context);
+
+    apr_atomic_inc32(&g_blocked_threads);
+    while (1) {
+        if (workers_may_exit) {
+            apr_atomic_dec32(&g_blocked_threads);
+            return NULL;
+        }
+        rc = GetQueuedCompletionStatus(ThreadDispatchIOCP, &BytesRead,
+                                       &CompKey, &pol, INFINITE);
+        if (!rc) {
+            rc = apr_get_os_error();
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, rc, ap_server_conf, APLOGNO(00349)
+                         "Child: GetQueuedCompletionStatus returned %d",
+                         rc);
+            continue;
+        }
+
+        switch (CompKey) {
+        case IOCP_CONNECTION_ACCEPTED:
+            context = CONTAINING_RECORD(pol, winnt_conn_ctx_t, overlapped);
+            break;
+        case IOCP_SHUTDOWN:
+            apr_atomic_dec32(&g_blocked_threads);
+            return NULL;
+        default:
+            apr_atomic_dec32(&g_blocked_threads);
+            return NULL;
+        }
+        break;
+    }
+    apr_atomic_dec32(&g_blocked_threads);
+
+    return context;
+}
+
+/*
+ * worker_main()
+ * Main entry point for the worker threads. Worker threads block in
+ * win*_get_connection() awaiting a connection to service.
+ */
+static DWORD __stdcall worker_main(void *thread_num_val)
+{
+    apr_thread_t *thd = NULL;
+    apr_os_thread_t osthd = NULL;
+    static int requests_this_child = 0;
+    winnt_conn_ctx_t *context = NULL;
+    int thread_num = (int)thread_num_val;
+    ap_sb_handle_t *sbh;
+    conn_rec *c;
+    apr_int32_t disconnected;
+
+#if AP_HAS_THREAD_LOCAL
+    if (ap_thread_current_create(&thd, NULL, pchild) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ap_server_conf, APLOGNO(10376)
+                     "Couldn't initialize worker thread, thread locals won't "
+                     "be available");
+        osthd = apr_os_thread_current();
+    }
+#else
+    osthd = apr_os_thread_current();
+#endif
+
+    while (1) {
+
+        ap_update_child_status_from_indexes(0, thread_num, SERVER_READY, NULL);
+
+        /* Grab a connection off the network */
+        context = winnt_get_connection(context);
+
+        if (!context) {
+            /* Time for the thread to exit */
+            break;
+        }
+
+        /* Have we hit MaxConnectionsPerChild connections? */
+        if (ap_max_requests_per_child) {
+            requests_this_child++;
+            if (requests_this_child > ap_max_requests_per_child) {
+                SetEvent(max_requests_per_child_event);
+            }
+        }
+
+        ap_create_sb_handle(&sbh, context->ptrans, 0, thread_num);
+        c = ap_run_create_connection(context->ptrans, ap_server_conf,
+                                     context->sock, thread_num, sbh,
+                                     context->ba);
+
+        if (!c) {
+            /* ap_run_create_connection closes the socket on failure */
+            context->accept_socket = INVALID_SOCKET;
+            continue;
+        }
+
+        if (osthd) {
+            thd = NULL;
+            apr_os_thread_put(&thd, &osthd, context->ptrans);
+        }
+        c->current_thread = thd;
+
+        ap_process_connection(c, context->sock);
+
+        ap_lingering_close(c);
+
+        apr_socket_opt_get(context->sock, APR_SO_DISCONNECTED, &disconnected);
+        if (!disconnected) {
+            context->accept_socket = INVALID_SOCKET;
+        }
+    }
+
+    ap_update_child_status_from_indexes(0, thread_num, SERVER_DEAD, NULL);
+
+#if AP_HAS_THREAD_LOCAL
+    if (!osthd) {
+        apr_pool_destroy(apr_thread_pool_get(thd));
+    }
+#endif
+
+    return 0;
+}
+
+
+static void cleanup_thread(HANDLE *handles, int *thread_cnt,
+                           int thread_to_clean)
+{
+    int i;
+
+    CloseHandle(handles[thread_to_clean]);
+    for (i = thread_to_clean; i < ((*thread_cnt) - 1); i++)
+        handles[i] = handles[i + 1];
+    (*thread_cnt)--;
+}
+
+
+/*
+ * child_main()
+ * Entry point for the main control thread for the child process.
+ * This thread creates the accept thread, worker threads and
+ * monitors the child process for maintenance and shutdown
+ * events.
+ */
+static void create_listener_thread(void)
+{
+    unsigned tid;
+    int num_listeners = 0;
+    /* Start an accept thread per listener
+     * XXX: Why would we have a NULL sd in our listeners?
+     */
+    ap_listen_rec *lr;
+
+    /* Number of completion_contexts allowed in the system is
+     * (ap_threads_per_child + num_listeners). We need the additional
+     * completion contexts to prevent server hangs when ThreadsPerChild
+     * is configured to something less than or equal to the number
+     * of listeners. This is not a usual case, but people have
+     * encountered it.
+     */
+    for (lr = ap_listeners; lr ; lr = lr->next) {
+        num_listeners++;
+    }
+    max_num_completion_contexts = ap_threads_per_child + num_listeners;
+
+    /* Now start a thread per listener */
+    for (lr = ap_listeners; lr; lr = lr->next) {
+        if (lr->sd != NULL) {
+            /* A smaller stack is sufficient.
+             * To convert to CreateThread, the returned handle cannot be
+             * ignored, it must be closed/joined.
+             */
+            _beginthreadex(NULL, 65536, winnt_accept,
+                           (void *) lr, stack_res_flag, &tid);
+        }
+    }
+}
+
+
+void child_main(apr_pool_t *pconf, DWORD parent_pid)
+{
+    apr_status_t status;
+    apr_hash_t *ht;
+    ap_listen_rec *lr;
+    HANDLE child_events[3];
+    HANDLE *child_handles;
+    int listener_started = 0;
+    int threads_created = 0;
+    int watch_thread;
+    int time_remains;
+    int cld;
+    DWORD tid;
+    int rv;
+    int i;
+    int num_events;
+
+    /* Get a sub context for global allocations in this child, so that
+     * we can have cleanups occur when the child exits.
+     */
+    apr_pool_create(&pchild, pconf);
+    apr_pool_tag(pchild, "pchild");
+
+    ap_run_child_init(pchild, ap_server_conf);
+    ht = apr_hash_make(pchild);
+
+    /* Initialize the child_events */
+    max_requests_per_child_event = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!max_requests_per_child_event) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00350)
+                     "Child: Failed to create a max_requests event.");
+        exit(APEXIT_CHILDINIT);
+    }
+    child_events[0] = exit_event;
+    child_events[1] = max_requests_per_child_event;
+
+    if (parent_pid != my_pid) {
+        child_events[2] = OpenProcess(SYNCHRONIZE, FALSE, parent_pid);
+        if (child_events[2] == NULL) {
+            num_events = 2;
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), ap_server_conf, APLOGNO(02643)
+                         "Child: Failed to open handle to parent process %ld; "
+                         "will not react to abrupt parent termination", parent_pid);
+        }
+        else {
+            num_events = 3;
+        }
+    }
+    else {
+        /* presumably -DONE_PROCESS */
+        child_events[2] = NULL;
+        num_events = 2;
+    }
+
+    /*
+     * Wait until we have permission to start accepting connections.
+     * start_mutex is used to ensure that only one child ever
+     * goes into the listen/accept loop at once.
+     */
+    status = apr_proc_mutex_lock(start_mutex);
+    if (status != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, status, ap_server_conf, APLOGNO(00351)
+                     "Child: Failed to acquire the start_mutex. "
+                     "Process will exit.");
+        exit(APEXIT_CHILDINIT);
+    }
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00352)
+                 "Child: Acquired the start mutex.");
+
+    /*
+     * Create the worker thread dispatch IOCompletionPort
+     */
+    /* Create the worker thread dispatch IOCP */
+    ThreadDispatchIOCP = CreateIoCompletionPort(INVALID_HANDLE_VALUE,
+                                                NULL, 0, 0);
+    apr_thread_mutex_create(&qlock, APR_THREAD_MUTEX_DEFAULT, pchild);
+    qwait_event = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!qwait_event) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(),
+                     ap_server_conf, APLOGNO(00353)
+                     "Child: Failed to create a qwait event.");
+        exit(APEXIT_CHILDINIT);
+    }
+
+    /*
+     * Create the pool of worker threads
+     */
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00354)
+                 "Child: Starting %d worker threads.", ap_threads_per_child);
+    child_handles = (HANDLE) apr_pcalloc(pchild, ap_threads_per_child
+                                                  * sizeof(HANDLE));
+    apr_thread_mutex_create(&child_lock, APR_THREAD_MUTEX_DEFAULT, pchild);
+
+    while (1) {
+        for (i = 0; i < ap_threads_per_child; i++) {
+            int *score_idx;
+            int status = ap_scoreboard_image->servers[0][i].status;
+            if (status != SERVER_GRACEFUL && status != SERVER_DEAD) {
+                continue;
+            }
+            ap_update_child_status_from_indexes(0, i, SERVER_STARTING, NULL);
+
+            child_handles[i] = CreateThread(NULL, ap_thread_stacksize,
+                                            worker_main, (void *) i,
+                                            stack_res_flag, &tid);
+            if (child_handles[i] == 0) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(),
+                             ap_server_conf, APLOGNO(00355)
+                             "Child: CreateThread failed. Unable to "
+                             "create all worker threads. Created %d of the %d "
+                             "threads requested with the ThreadsPerChild "
+                             "configuration directive.",
+                             threads_created, ap_threads_per_child);
+                ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+                goto shutdown;
+            }
+            threads_created++;
+            /* Save the score board index in ht keyed to the thread handle.
+             * We need this when cleaning up threads down below...
+             */
+            apr_thread_mutex_lock(child_lock);
+            score_idx = apr_pcalloc(pchild, sizeof(int));
+            *score_idx = i;
+            apr_hash_set(ht, &child_handles[i], sizeof(HANDLE), score_idx);
+            apr_thread_mutex_unlock(child_lock);
+        }
+        /* Start the listener only when workers are available */
+        if (!listener_started && threads_created) {
+            create_listener_thread();
+            listener_started = 1;
+            winnt_mpm_state = AP_MPMQ_RUNNING;
+        }
+        if (threads_created == ap_threads_per_child) {
+            break;
+        }
+        /* Check to see if the child has been told to exit */
+        if (WaitForSingleObject(exit_event, 0) != WAIT_TIMEOUT) {
+            break;
+        }
+        /* wait for previous generation to clean up an entry in the scoreboard
+         */
+        apr_sleep(1 * APR_USEC_PER_SEC);
+    }
+
+    /* Wait for one of these events:
+     * exit_event:
+     *    The exit_event is signaled by the parent process to notify
+     *    the child that it is time to exit.
+     *
+     * max_requests_per_child_event:
+     *    This event is signaled by the worker threads to indicate that
+     *    the process has handled MaxConnectionsPerChild connections.
+     *
+     * parent process exiting
+     *
+     * TIMEOUT:
+     *    To do periodic maintenance on the server (check for thread exits,
+     *    number of completion contexts, etc.)
+     *
+     * XXX: thread exits *aren't* being checked.
+     *
+     * XXX: other_child - we need the process handles to the other children
+     *      in order to map them to apr_proc_other_child_read (which is not
+     *      named well, it's more like a_p_o_c_died.)
+     *
+     * XXX: however - if we get a_p_o_c handle inheritance working, and
+     *      the parent process creates other children and passes the pipes
+     *      to our worker processes, then we have no business doing such
+     *      things in the child_main loop, but should happen in master_main.
+     */
+    while (1) {
+#if !APR_HAS_OTHER_CHILD
+        rv = WaitForMultipleObjects(num_events, (HANDLE *)child_events, FALSE, INFINITE);
+        cld = rv - WAIT_OBJECT_0;
+#else
+        /* THIS IS THE EXPECTED BUILD VARIATION -- APR_HAS_OTHER_CHILD */
+        rv = WaitForMultipleObjects(num_events, (HANDLE *)child_events, FALSE, 1000);
+        cld = rv - WAIT_OBJECT_0;
+        if (rv == WAIT_TIMEOUT) {
+            apr_proc_other_child_refresh_all(APR_OC_REASON_RUNNING);
+        }
+        else
+#endif
+            if (rv == WAIT_FAILED) {
+            /* Something serious is wrong */
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(),
+                         ap_server_conf, APLOGNO(00356)
+                         "Child: WAIT_FAILED -- shutting down server");
+            /* check handle validity to identify a possible culprit */
+            for (i = 0; i < num_events; i++) {
+                DWORD out_flags;
+
+                if (0 == GetHandleInformation(child_events[i], &out_flags)) {
+                    ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(),
+                                 ap_server_conf, APLOGNO(02644)
+                                 "Child: Event handle #%d (%pp) is invalid",
+                                 i, child_events[i]);
+                }
+            }
+            break;
+        }
+        else if (cld == 0) {
+            /* Exit event was signaled */
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00357)
+                         "Child: Exit event signaled. Child process is "
+                         "ending.");
+            break;
+        }
+        else if (cld == 2) {
+            /* The parent is dead.  Shutdown the child process. */
+            ap_log_error(APLOG_MARK, APLOG_CRIT, 0, ap_server_conf, APLOGNO(02538)
+                         "Child: Parent process exited abruptly. Child process "
+                         "is ending");
+            break;
+        }
+        else {
+            /* MaxConnectionsPerChild event set by the worker threads.
+             * Signal the parent to restart
+             */
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00358)
+                         "Child: Process exiting because it reached "
+                         "MaxConnectionsPerChild. Signaling the parent to "
+                         "restart a new child process.");
+            ap_signal_parent(SIGNAL_PARENT_RESTART);
+            break;
+        }
+    }
+
+    /*
+     * Time to shutdown the child process
+     */
+
+ shutdown:
+
+    winnt_mpm_state = AP_MPMQ_STOPPING;
+
+    /* Close the listening sockets. Note, we must close the listeners
+     * before closing any accept sockets pending in AcceptEx to prevent
+     * memory leaks in the kernel.
+     */
+    for (lr = ap_listeners; lr ; lr = lr->next) {
+        apr_socket_close(lr->sd);
+    }
+
+    /* Shutdown listener threads and pending AcceptEx sockets
+     * but allow the worker threads to continue consuming from
+     * the queue of accepted connections.
+     */
+    shutdown_in_progress = 1;
+
+    Sleep(1000);
+
+    /* Tell the worker threads to exit */
+    workers_may_exit = 1;
+
+    /* Release the start_mutex to let the new process (in the restart
+     * scenario) a chance to begin accepting and servicing requests
+     */
+    rv = apr_proc_mutex_unlock(start_mutex);
+    if (rv == APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, ap_server_conf, APLOGNO(00359)
+                     "Child: Released the start mutex");
+    }
+    else {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf, APLOGNO(00360)
+                     "Child: Failure releasing the start mutex");
+    }
+
+    /* Shutdown the worker threads
+     * Post worker threads blocked on the ThreadDispatch IOCompletion port
+     */
+    while (g_blocked_threads > 0) {
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00361)
+                     "Child: %d threads blocked on the completion port",
+                     g_blocked_threads);
+        for (i=g_blocked_threads; i > 0; i--) {
+            PostQueuedCompletionStatus(ThreadDispatchIOCP, 0,
+                                       IOCP_SHUTDOWN, NULL);
+        }
+        Sleep(1000);
+    }
+    /* Empty the accept queue of completion contexts */
+    apr_thread_mutex_lock(qlock);
+    while (qhead) {
+        CloseHandle(qhead->overlapped.hEvent);
+        closesocket(qhead->accept_socket);
+        qhead = qhead->next;
+    }
+    apr_thread_mutex_unlock(qlock);
+
+    /* Give busy threads a chance to service their connections
+     * (no more than the global server timeout period which
+     * we track in msec remaining).
+     */
+    watch_thread = 0;
+    time_remains = (int)(ap_server_conf->timeout / APR_TIME_C(1000));
+
+    while (threads_created)
+    {
+        int nFailsafe = MAXIMUM_WAIT_OBJECTS;
+        DWORD dwRet;
+
+        /* Every time we roll over to wait on the first group
+         * of MAXIMUM_WAIT_OBJECTS threads, take a breather,
+         * and infrequently update the error log.
+         */
+        if (watch_thread >= threads_created) {
+            if ((time_remains -= 100) < 0)
+                break;
+
+            /* Every 30 seconds give an update */
+            if ((time_remains % 30000) == 0) {
+                ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS,
+                             ap_server_conf, APLOGNO(00362)
+                             "Child: Waiting %d more seconds "
+                             "for %d worker threads to finish.",
+                             time_remains / 1000, threads_created);
+            }
+            /* We'll poll from the top, 10 times per second */
+            Sleep(100);
+            watch_thread = 0;
+        }
+
+        /* Fairness, on each iteration we will pick up with the thread
+         * after the one we just removed, even if it's a single thread.
+         * We don't block here.
+         */
+        dwRet = WaitForMultipleObjects(min(threads_created - watch_thread,
+                                           MAXIMUM_WAIT_OBJECTS),
+                                       child_handles + watch_thread, 0, 0);
+
+        if (dwRet == WAIT_FAILED) {
+            break;
+        }
+        if (dwRet == WAIT_TIMEOUT) {
+            /* none ready */
+            watch_thread += MAXIMUM_WAIT_OBJECTS;
+            continue;
+        }
+        else if (dwRet >= WAIT_ABANDONED_0) {
+            /* We just got the ownership of the object, which
+             * should happen at most MAXIMUM_WAIT_OBJECTS times.
+             * It does NOT mean that the object is signaled.
+             */
+            if ((nFailsafe--) < 1)
+                break;
+        }
+        else {
+            watch_thread += (dwRet - WAIT_OBJECT_0);
+            if (watch_thread >= threads_created)
+                break;
+            cleanup_thread(child_handles, &threads_created, watch_thread);
+        }
+    }
+
+    /* Kill remaining threads off the hard way */
+    if (threads_created) {
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00363)
+                     "Child: Terminating %d threads that failed to exit.",
+                     threads_created);
+    }
+    for (i = 0; i < threads_created; i++) {
+        int *idx;
+        TerminateThread(child_handles[i], 1);
+        CloseHandle(child_handles[i]);
+        /* Reset the scoreboard entry for the thread we just whacked */
+        idx = apr_hash_get(ht, &child_handles[i], sizeof(HANDLE));
+        if (idx) {
+            ap_update_child_status_from_indexes(0, *idx, SERVER_DEAD, NULL);
+        }
+    }
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00364)
+                 "Child: All worker threads have exited.");
+
+    apr_thread_mutex_destroy(child_lock);
+    apr_thread_mutex_destroy(qlock);
+    CloseHandle(qwait_event);
+    CloseHandle(ThreadDispatchIOCP);
+
+    apr_pool_destroy(pchild);
+    CloseHandle(exit_event);
+    if (child_events[2] != NULL) {
+        CloseHandle(child_events[2]);
+    }
+}
+
+#endif /* def WIN32 */
diff --git a/server/mpm/winnt/config.m4 b/server/mpm/winnt/config.m4
new file mode 100644
index 0000000..5c1fd42
--- /dev/null
+++ b/server/mpm/winnt/config.m4
@@ -0,0 +1,10 @@
+AC_MSG_CHECKING(if WinNT MPM supports this platform)
+case $host in
+    *mingw32*)
+        AC_MSG_RESULT(yes)
+        APACHE_MPM_SUPPORTED(winnt, no, yes)
+        ;;
+    *)
+        AC_MSG_RESULT(no)
+        ;;
+esac
diff --git a/server/mpm/winnt/config3.m4 b/server/mpm/winnt/config3.m4
new file mode 100644
index 0000000..f937e40
--- /dev/null
+++ b/server/mpm/winnt/config3.m4
@@ -0,0 +1,2 @@
+winnt_objects="child.lo mpm_winnt.lo nt_eventlog.lo service.lo"
+APACHE_MPM_MODULE(winnt, $enable_mpm_winnt, $winnt_objects)
diff --git a/server/mpm/winnt/mpm_default.h b/server/mpm/winnt/mpm_default.h
new file mode 100644
index 0000000..b5350d4
--- /dev/null
+++ b/server/mpm/winnt/mpm_default.h
@@ -0,0 +1,60 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file  winnt/mpm_default.h
+ * @brief win32 MPM defaults
+ *
+ * @defgroup APACHE_MPM_WINNT WinNT MPM
+ * @ingroup APACHE_INTERNAL
+ * @{
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Default limit on the maximum setting of the ThreadsPerChild configuration
+ * directive.  This limit can be overridden with the ThreadLimit directive.
+ * This limit directly influences the amount of shared storage that is allocated
+ * for the scoreboard. DEFAULT_THREAD_LIMIT represents a good compromise
+ * between scoreboard size and the ability of the server to handle the most
+ * common installation requirements.
+ */
+#ifndef DEFAULT_THREAD_LIMIT
+#define DEFAULT_THREAD_LIMIT 1920
+#endif
+
+/* The ThreadLimit directive can be used to override the DEFAULT_THREAD_LIMIT.
+ * ThreadLimit cannot be tuned larger than MAX_THREAD_LIMIT.
+ * This is a sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_THREAD_LIMIT
+#define MAX_THREAD_LIMIT 15000
+#endif
+
+/* Number of threads started in the child process in the absence
+ * of a ThreadsPerChild configuration directive
+ */
+#ifndef DEFAULT_THREADS_PER_CHILD
+#define DEFAULT_THREADS_PER_CHILD 64
+#endif
+
+/* Max number of child processes allowed.
+ */
+#define HARD_SERVER_LIMIT 1
+
+#endif /* AP_MPM_DEFAULT_H */
+/** @} */
diff --git a/server/mpm/winnt/mpm_winnt.c b/server/mpm/winnt/mpm_winnt.c
new file mode 100644
index 0000000..1b8962e
--- /dev/null
+++ b/server/mpm/winnt/mpm_winnt.c
@@ -0,0 +1,1783 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifdef WIN32
+
+#include "httpd.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "http_config.h" /* for read_config */
+#include "http_core.h"   /* for get_remote_host */
+#include "http_connection.h"
+#include "apr_portable.h"
+#include "apr_thread_proc.h"
+#include "apr_getopt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "apr_shm.h"
+#include "apr_thread_mutex.h"
+#include "ap_mpm.h"
+#include "apr_general.h"
+#include "ap_config.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+#include "mpm_winnt.h"
+#include "mpm_common.h"
+#include <malloc.h>
+#include "apr_atomic.h"
+#include "scoreboard.h"
+
+#ifdef __WATCOMC__
+#define _environ environ
+#endif
+
+#ifndef STACK_SIZE_PARAM_IS_A_RESERVATION /* missing on MinGW */
+#define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000
+#endif
+
+/* Because ap_setup_listeners() is skipped in the child, any merging
+ * of [::]:80 and 0.0.0.0:80 for AP_ENABLE_V4_MAPPED in the parent
+ * won't have taken place in the child, so the child will expect to
+ * read two sockets for "Listen 80" but the parent will send only
+ * one.
+ */
+#ifdef AP_ENABLE_V4_MAPPED
+#error The WinNT MPM does not currently support AP_ENABLE_V4_MAPPED
+#endif
+
+/* scoreboard.c does the heavy lifting; all we do is create the child
+ * score by moving a handle down the pipe into the child's stdin.
+ */
+extern apr_shm_t *ap_scoreboard_shm;
+
+/* my_generation is returned to the scoreboard code */
+static volatile ap_generation_t my_generation=0;
+
+/* Definitions of WINNT MPM specific config globals */
+static HANDLE shutdown_event;  /* used to signal the parent to shutdown */
+static HANDLE restart_event;   /* used to signal the parent to restart */
+
+static int one_process = 0;
+static char const* signal_arg = NULL;
+
+OSVERSIONINFO osver; /* VER_PLATFORM_WIN32_NT */
+
+/* set by child_main to STACK_SIZE_PARAM_IS_A_RESERVATION for NT >= 5.1 (XP/2003) */
+DWORD stack_res_flag;
+
+static DWORD parent_pid;
+DWORD my_pid;
+
+/* used by parent to signal the child to start and exit */
+apr_proc_mutex_t *start_mutex;
+HANDLE exit_event;
+
+int ap_threads_per_child = 0;
+static int thread_limit = 0;
+static int first_thread_limit = 0;
+int winnt_mpm_state = AP_MPMQ_STARTING;
+
+/* shared by service.c as global, although
+ * perhaps it should be private.
+ */
+apr_pool_t *pconf;
+
+/* Only one of these, the pipe from our parent, meant only for
+ * one child worker's consumption (not to be inherited!)
+ * XXX: decorate this name for the trunk branch, was left simplified
+ *      only to make the 2.2 patch trivial to read.
+ */
+static HANDLE pipe;
+
+/*
+ * Command processors
+ */
+
+static const char *set_threads_per_child (cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_per_child = atoi(arg);
+    return NULL;
+}
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    thread_limit = atoi(arg);
+    return NULL;
+}
+
+static const command_rec winnt_cmds[] = {
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF,
+  "Number of threads each child creates" ),
+AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
+  "Maximum worker threads in a server for this run of Apache"),
+{ NULL }
+};
+
+static void winnt_note_child_started(int slot, pid_t pid)
+{
+    ap_scoreboard_image->parent[slot].pid = pid;
+    ap_scoreboard_image->parent[slot].generation = my_generation;
+    ap_run_child_status(ap_server_conf,
+                        ap_scoreboard_image->parent[slot].pid,
+                        my_generation, slot, MPM_CHILD_STARTED);
+}
+
+static void winnt_note_child_killed(int slot)
+{
+    ap_run_child_status(ap_server_conf,
+                        ap_scoreboard_image->parent[slot].pid,
+                        ap_scoreboard_image->parent[slot].generation,
+                        slot, MPM_CHILD_EXITED);
+    ap_scoreboard_image->parent[slot].pid = 0;
+}
+
+/*
+ * Signalling Apache on NT.
+ *
+ * Under Unix, Apache can be told to shutdown or restart by sending various
+ * signals (HUP, USR, TERM). On NT we don't have easy access to signals, so
+ * we use "events" instead. The parent apache process goes into a loop
+ * where it waits forever for a set of events. Two of those events are
+ * called
+ *
+ *    apPID_shutdown
+ *    apPID_restart
+ *
+ * (where PID is the PID of the apache parent process). When one of these
+ * is signalled, the Apache parent performs the appropriate action. The events
+ * can become signalled through internal Apache methods (e.g. if the child
+ * finds a fatal error and needs to kill its parent), via the service
+ * control manager (the control thread will signal the shutdown event when
+ * requested to stop the Apache service), from the -k Apache command line,
+ * or from any external program which finds the Apache PID from the
+ * httpd.pid file.
+ *
+ * The signal_parent() function, below, is used to signal one of these events.
+ * It can be called by any child or parent process, since it does not
+ * rely on global variables.
+ *
+ * On entry, type gives the event to signal. 0 means shutdown, 1 means
+ * graceful restart.
+ */
+/*
+ * Initialise the signal names, in the global variables signal_name_prefix,
+ * signal_restart_name and signal_shutdown_name.
+ */
+#define MAX_SIGNAL_NAME 30  /* Long enough for apPID_shutdown, where PID is an int */
+static char signal_name_prefix[MAX_SIGNAL_NAME];
+static char signal_restart_name[MAX_SIGNAL_NAME];
+static char signal_shutdown_name[MAX_SIGNAL_NAME];
+static void setup_signal_names(char *prefix)
+{
+    apr_snprintf(signal_name_prefix, sizeof(signal_name_prefix), prefix);
+    apr_snprintf(signal_shutdown_name, sizeof(signal_shutdown_name),
+        "%s_shutdown", signal_name_prefix);
+    apr_snprintf(signal_restart_name, sizeof(signal_restart_name),
+        "%s_restart", signal_name_prefix);
+}
+
+AP_DECLARE(void) ap_signal_parent(ap_signal_parent_e type)
+{
+    HANDLE e;
+    char *signal_name;
+
+    if (parent_pid == my_pid) {
+        switch(type) {
+           case SIGNAL_PARENT_SHUTDOWN:
+           {
+               SetEvent(shutdown_event);
+               break;
+           }
+           /* This MPM supports only graceful restarts right now */
+           case SIGNAL_PARENT_RESTART:
+           case SIGNAL_PARENT_RESTART_GRACEFUL:
+           {
+               SetEvent(restart_event);
+               break;
+           }
+        }
+        return;
+    }
+
+    switch(type) {
+       case SIGNAL_PARENT_SHUTDOWN:
+       {
+           signal_name = signal_shutdown_name;
+           break;
+       }
+       /* This MPM supports only graceful restarts right now */
+       case SIGNAL_PARENT_RESTART:
+       case SIGNAL_PARENT_RESTART_GRACEFUL:
+       {
+           signal_name = signal_restart_name;
+           break;
+       }
+       default:
+           return;
+    }
+
+    e = OpenEvent(EVENT_MODIFY_STATE, FALSE, signal_name);
+    if (!e) {
+        /* Um, problem, can't signal the parent, which means we can't
+         * signal ourselves to die. Ignore for now...
+         */
+        ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf, APLOGNO(00382)
+                     "OpenEvent on %s event", signal_name);
+        return;
+    }
+    if (SetEvent(e) == 0) {
+        /* Same problem as above */
+        ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf, APLOGNO(00383)
+                     "SetEvent on %s event", signal_name);
+        CloseHandle(e);
+        return;
+    }
+    CloseHandle(e);
+}
+
+
+/*
+ * Passed the following handles [in sync with send_handles_to_child()]
+ *
+ *   ready event [signal the parent immediately, then close]
+ *   exit event  [save to poll later]
+ *   start mutex [signal from the parent to begin accept()]
+ *   scoreboard shm handle [to recreate the ap_scoreboard]
+ */
+static void get_handles_from_parent(server_rec *s, HANDLE *child_exit_event,
+                                    apr_proc_mutex_t **child_start_mutex,
+                                    apr_shm_t **scoreboard_shm)
+{
+    HANDLE hScore;
+    HANDLE ready_event;
+    HANDLE os_start;
+    DWORD BytesRead;
+    void *sb_shared;
+    apr_status_t rv;
+
+    /* *** We now do this way back in winnt_rewrite_args
+     * pipe = GetStdHandle(STD_INPUT_HANDLE);
+     */
+    if (!ReadFile(pipe, &ready_event, sizeof(HANDLE),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(HANDLE))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00384)
+                     "Child: Unable to retrieve the ready event from the parent");
+        exit(APEXIT_CHILDINIT);
+    }
+
+    SetEvent(ready_event);
+    CloseHandle(ready_event);
+
+    if (!ReadFile(pipe, child_exit_event, sizeof(HANDLE),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(HANDLE))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00385)
+                     "Child: Unable to retrieve the exit event from the parent");
+        exit(APEXIT_CHILDINIT);
+    }
+
+    if (!ReadFile(pipe, &os_start, sizeof(os_start),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(os_start))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00386)
+                     "Child: Unable to retrieve the start_mutex from the parent");
+        exit(APEXIT_CHILDINIT);
+    }
+    *child_start_mutex = NULL;
+    if ((rv = apr_os_proc_mutex_put(child_start_mutex, &os_start, s->process->pool))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00387)
+                     "Child: Unable to access the start_mutex from the parent");
+        exit(APEXIT_CHILDINIT);
+    }
+
+    if (!ReadFile(pipe, &hScore, sizeof(hScore),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(hScore))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00388)
+                     "Child: Unable to retrieve the scoreboard from the parent");
+        exit(APEXIT_CHILDINIT);
+    }
+    *scoreboard_shm = NULL;
+    if ((rv = apr_os_shm_put(scoreboard_shm, &hScore, s->process->pool))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00389)
+                     "Child: Unable to access the scoreboard from the parent");
+        exit(APEXIT_CHILDINIT);
+    }
+
+    rv = ap_reopen_scoreboard(s->process->pool, scoreboard_shm, 1);
+    if (rv || !(sb_shared = apr_shm_baseaddr_get(*scoreboard_shm))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00390)
+                     "Child: Unable to reopen the scoreboard from the parent");
+        exit(APEXIT_CHILDINIT);
+    }
+    /* We must 'initialize' the scoreboard to relink all the
+     * process-local pointer arrays into the shared memory block.
+     */
+    ap_init_scoreboard(sb_shared);
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00391)
+                 "Child: Retrieved our scoreboard from the parent.");
+}
+
+
+static int send_handles_to_child(apr_pool_t *p,
+                                 HANDLE child_ready_event,
+                                 HANDLE child_exit_event,
+                                 apr_proc_mutex_t *child_start_mutex,
+                                 apr_shm_t *scoreboard_shm,
+                                 HANDLE hProcess,
+                                 apr_file_t *child_in)
+{
+    apr_status_t rv;
+    HANDLE hCurrentProcess = GetCurrentProcess();
+    HANDLE hDup;
+    HANDLE os_start;
+    HANDLE hScore;
+    apr_size_t BytesWritten;
+
+    if ((rv = apr_file_write_full(child_in, &my_generation,
+                                  sizeof(my_generation), NULL))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(02964)
+                     "Parent: Unable to send its generation to the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, child_ready_event, hProcess, &hDup,
+        EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00392)
+                     "Parent: Unable to duplicate the ready event handle for the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00393)
+                     "Parent: Unable to send the exit event handle to the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, child_exit_event, hProcess, &hDup,
+                         EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00394)
+                     "Parent: Unable to duplicate the exit event handle for the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00395)
+                     "Parent: Unable to send the exit event handle to the child");
+        return -1;
+    }
+    if ((rv = apr_os_proc_mutex_get(&os_start, child_start_mutex)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00396)
+                     "Parent: Unable to retrieve the start mutex for the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, os_start, hProcess, &hDup,
+                         SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00397)
+                     "Parent: Unable to duplicate the start mutex to the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00398)
+                     "Parent: Unable to send the start mutex to the child");
+        return -1;
+    }
+    if ((rv = apr_os_shm_get(&hScore, scoreboard_shm)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00399)
+                     "Parent: Unable to retrieve the scoreboard handle for the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, hScore, hProcess, &hDup,
+                         FILE_MAP_READ | FILE_MAP_WRITE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00400)
+                     "Parent: Unable to duplicate the scoreboard handle to the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00401)
+                     "Parent: Unable to send the scoreboard handle to the child");
+        return -1;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00402)
+                 "Parent: Sent the scoreboard to the child");
+    return 0;
+}
+
+
+/*
+ * get_listeners_from_parent()
+ * The listen sockets are opened in the parent. This function, which runs
+ * exclusively in the child process, receives them from the parent and
+ * makes them available in the child.
+ */
+static void get_listeners_from_parent(server_rec *s)
+{
+    WSAPROTOCOL_INFO WSAProtocolInfo;
+    ap_listen_rec *lr;
+    DWORD BytesRead;
+    int lcnt = 0;
+    SOCKET nsd;
+
+    /* Set up a default listener if necessary */
+    if (ap_listeners == NULL) {
+        ap_listen_rec *lr;
+        lr = apr_palloc(s->process->pool, sizeof(ap_listen_rec));
+        lr->sd = NULL;
+        lr->next = ap_listeners;
+        ap_listeners = lr;
+    }
+
+    /* Open the pipe to the parent process to receive the inherited socket
+     * data. The sockets have been set to listening in the parent process.
+     *
+     * *** We now do this way back in winnt_rewrite_args
+     * pipe = GetStdHandle(STD_INPUT_HANDLE);
+     */
+    for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00403)
+                     "Child: Waiting for data for listening socket %pI",
+                     lr->bind_addr);
+        if (!ReadFile(pipe, &WSAProtocolInfo, sizeof(WSAPROTOCOL_INFO),
+                      &BytesRead, (LPOVERLAPPED) NULL)) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00404)
+                         "Child: Unable to read socket data from parent");
+            exit(APEXIT_CHILDINIT);
+        }
+
+        nsd = WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO,
+                        &WSAProtocolInfo, 0, 0);
+        if (nsd == INVALID_SOCKET) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf, APLOGNO(00405)
+                         "Child: WSASocket failed to open the inherited socket");
+            exit(APEXIT_CHILDINIT);
+        }
+
+        if (!SetHandleInformation((HANDLE)nsd, HANDLE_FLAG_INHERIT, 0)) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), ap_server_conf, APLOGNO(00406)
+                         "Child: SetHandleInformation failed");
+        }
+        apr_os_sock_put(&lr->sd, &nsd, s->process->pool);
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00407)
+                 "Child: retrieved %d listeners from parent", lcnt);
+}
+
+
+static int send_listeners_to_child(apr_pool_t *p, DWORD dwProcessId,
+                                   apr_file_t *child_in)
+{
+    apr_status_t rv;
+    int lcnt = 0;
+    ap_listen_rec *lr;
+    LPWSAPROTOCOL_INFO  lpWSAProtocolInfo;
+    apr_size_t BytesWritten;
+
+    /* Run the chain of open sockets. For each socket, duplicate it
+     * for the target process then send the WSAPROTOCOL_INFO
+     * (returned by dup socket) to the child.
+     */
+    for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
+        apr_os_sock_t nsd;
+        lpWSAProtocolInfo = apr_pcalloc(p, sizeof(WSAPROTOCOL_INFO));
+        apr_os_sock_get(&nsd, lr->sd);
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00408)
+                     "Parent: Duplicating socket %d (%pI) and sending it to child process %lu",
+                     nsd, lr->bind_addr, dwProcessId);
+        if (WSADuplicateSocket(nsd, dwProcessId,
+                               lpWSAProtocolInfo) == SOCKET_ERROR) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf, APLOGNO(00409)
+                         "Parent: WSADuplicateSocket failed for socket %d. Check the FAQ.", nsd);
+            return -1;
+        }
+
+        if ((rv = apr_file_write_full(child_in, lpWSAProtocolInfo,
+                                      sizeof(WSAPROTOCOL_INFO), &BytesWritten))
+                != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00410)
+                         "Parent: Unable to write duplicated socket %d to the child.", nsd);
+            return -1;
+        }
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00411)
+                 "Parent: Sent %d listeners to child %lu", lcnt, dwProcessId);
+    return 0;
+}
+
+enum waitlist_e {
+    waitlist_ready = 0,
+    waitlist_term = 1
+};
+
+static int create_process(apr_pool_t *p, HANDLE *child_proc, HANDLE *child_exit_event,
+                          DWORD *child_pid)
+{
+    /* These NEVER change for the lifetime of this parent
+     */
+    static char **args = NULL;
+    static char pidbuf[28];
+
+    apr_status_t rv;
+    apr_pool_t *ptemp;
+    apr_procattr_t *attr;
+    apr_proc_t new_child;
+    HANDLE hExitEvent;
+    HANDLE waitlist[2];  /* see waitlist_e */
+    char *cmd;
+    char *cwd;
+    char **env;
+    int envc;
+
+    apr_pool_create_ex(&ptemp, p, NULL, NULL);
+    apr_pool_tag(ptemp, "create_process");
+
+    /* Build the command line. Should look something like this:
+     * C:/apache/bin/httpd.exe -f ap_server_confname
+     * First, get the path to the executable...
+     */
+    apr_procattr_create(&attr, ptemp);
+    apr_procattr_cmdtype_set(attr, APR_PROGRAM);
+    apr_procattr_detach_set(attr, 1);
+    if (((rv = apr_filepath_get(&cwd, 0, ptemp)) != APR_SUCCESS)
+           || ((rv = apr_procattr_dir_set(attr, cwd)) != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00412)
+                     "Parent: Failed to get the current path");
+    }
+
+    if (!args) {
+        /* Build the args array, only once since it won't change
+         * for the lifetime of this parent process.
+         */
+        if ((rv = ap_os_proc_filepath(&cmd, ptemp))
+                != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, ERROR_BAD_PATHNAME, ap_server_conf, APLOGNO(00413)
+                         "Parent: Failed to get full path of %s",
+                         ap_server_conf->process->argv[0]);
+            apr_pool_destroy(ptemp);
+            return -1;
+        }
+
+        args = ap_malloc((ap_server_conf->process->argc + 1) * sizeof (char*));
+        memcpy(args + 1, ap_server_conf->process->argv + 1,
+               (ap_server_conf->process->argc - 1) * sizeof (char*));
+        args[0] = ap_malloc(strlen(cmd) + 1);
+        strcpy(args[0], cmd);
+        args[ap_server_conf->process->argc] = NULL;
+    }
+    else {
+        cmd = args[0];
+    }
+
+    /* Create a pipe to send handles to the child */
+    if ((rv = apr_procattr_io_set(attr, APR_FULL_BLOCK,
+                                  APR_NO_PIPE, APR_NO_PIPE)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00414)
+                        "Parent: Unable to create child stdin pipe.");
+        apr_pool_destroy(ptemp);
+        return -1;
+    }
+
+    /* Create the child_ready_event */
+    waitlist[waitlist_ready] = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!waitlist[waitlist_ready]) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00415)
+                     "Parent: Could not create ready event for child process");
+        apr_pool_destroy (ptemp);
+        return -1;
+    }
+
+    /* Create the child_exit_event */
+    hExitEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!hExitEvent) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00416)
+                     "Parent: Could not create exit event for child process");
+        apr_pool_destroy(ptemp);
+        CloseHandle(waitlist[waitlist_ready]);
+        return -1;
+    }
+
+    /* Build the env array */
+    for (envc = 0; _environ[envc]; ++envc) {
+        ;
+    }
+    env = apr_palloc(ptemp, (envc + 2) * sizeof (char*));
+    memcpy(env, _environ, envc * sizeof (char*));
+    apr_snprintf(pidbuf, sizeof(pidbuf), "AP_PARENT_PID=%lu", parent_pid);
+    env[envc] = pidbuf;
+    env[envc + 1] = NULL;
+
+    rv = apr_proc_create(&new_child, cmd, (const char * const *)args,
+                         (const char * const *)env, attr, ptemp);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00417)
+                     "Parent: Failed to create the child process.");
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(waitlist[waitlist_ready]);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00418)
+                 "Parent: Created child process %d", new_child.pid);
+
+    if (send_handles_to_child(ptemp, waitlist[waitlist_ready], hExitEvent,
+                              start_mutex, ap_scoreboard_shm,
+                              new_child.hproc, new_child.in)) {
+        /*
+         * This error is fatal, mop up the child and move on
+         * We toggle the child's exit event to cause this child
+         * to quit even as it is attempting to start.
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(waitlist[waitlist_ready]);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    /* Important:
+     * Give the child process a chance to run before dup'ing the sockets.
+     * We have already set the listening sockets noninheritable, but if
+     * WSADuplicateSocket runs before the child process initializes
+     * the listeners will be inherited anyway.
+     */
+    waitlist[waitlist_term] = new_child.hproc;
+    rv = WaitForMultipleObjects(2, waitlist, FALSE, INFINITE);
+    CloseHandle(waitlist[waitlist_ready]);
+    if (rv != WAIT_OBJECT_0) {
+        /*
+         * Outch... that isn't a ready signal. It's dead, Jim!
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    if (send_listeners_to_child(ptemp, new_child.pid, new_child.in)) {
+        /*
+         * This error is fatal, mop up the child and move on
+         * We toggle the child's exit event to cause this child
+         * to quit even as it is attempting to start.
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    apr_file_close(new_child.in);
+
+    *child_exit_event = hExitEvent;
+    *child_proc = new_child.hproc;
+    *child_pid = new_child.pid;
+
+    return 0;
+}
+
+/***********************************************************************
+ * master_main()
+ * master_main() runs in the parent process.  It creates the child
+ * process which handles HTTP requests then waits on one of three
+ * events:
+ *
+ * restart_event
+ * -------------
+ * The restart event causes master_main to start a new child process and
+ * tells the old child process to exit (by setting the child_exit_event).
+ * The restart event is set as a result of one of the following:
+ * 1. An apache -k restart command on the command line
+ * 2. A command received from Windows service manager which gets
+ *    translated into an ap_signal_parent(SIGNAL_PARENT_RESTART)
+ *    call by code in service.c.
+ * 3. The child process calling ap_signal_parent(SIGNAL_PARENT_RESTART)
+ *    as a result of hitting MaxConnectionsPerChild.
+ *
+ * shutdown_event
+ * --------------
+ * The shutdown event causes master_main to tell the child process to
+ * exit and that the server is shutting down. The shutdown event is
+ * set as a result of one of the following:
+ * 1. An apache -k shutdown command on the command line
+ * 2. A command received from Windows service manager which gets
+ *    translated into an ap_signal_parent(SIGNAL_PARENT_SHUTDOWN)
+ *    call by code in service.c.
+ *
+ * child process handle
+ * --------------------
+ * The child process handle will be signaled if the child process
+ * exits for any reason. In a normal running server, the signaling
+ * of this event means that the child process has exited prematurely
+ * due to a seg fault or other irrecoverable error. For server
+ * robustness, master_main will restart the child process under this
+ * condition.
+ *
+ * master_main uses the child_exit_event to signal the child process
+ * to exit.
+ **********************************************************************/
+#define NUM_WAIT_HANDLES 3
+#define CHILD_HANDLE     0
+#define SHUTDOWN_HANDLE  1
+#define RESTART_HANDLE   2
+static int master_main(server_rec *s, HANDLE shutdown_event, HANDLE restart_event)
+{
+    int rv, cld;
+    int child_created;
+    int restart_pending;
+    int shutdown_pending;
+    HANDLE child_exit_event;
+    HANDLE event_handles[NUM_WAIT_HANDLES];
+    DWORD child_pid;
+
+    child_created = restart_pending = shutdown_pending = 0;
+
+    event_handles[SHUTDOWN_HANDLE] = shutdown_event;
+    event_handles[RESTART_HANDLE] = restart_event;
+
+    /* Create a single child process */
+    rv = create_process(pconf, &event_handles[CHILD_HANDLE],
+                        &child_exit_event, &child_pid);
+    if (rv < 0)
+    {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00419)
+                     "master_main: create child process failed. Exiting.");
+        shutdown_pending = 1;
+        goto die_now;
+    }
+
+    child_created = 1;
+
+    if (!strcasecmp(signal_arg, "runservice")) {
+        mpm_service_started();
+    }
+
+    /* Update the scoreboard. Note that there is only a single active
+     * child at once.
+     */
+    ap_scoreboard_image->parent[0].quiescing = 0;
+    winnt_note_child_started(/* slot */ 0, child_pid);
+
+    /* Wait for shutdown or restart events or for child death */
+    winnt_mpm_state = AP_MPMQ_RUNNING;
+    rv = WaitForMultipleObjects(NUM_WAIT_HANDLES, (HANDLE *) event_handles, FALSE, INFINITE);
+    cld = rv - WAIT_OBJECT_0;
+    if (rv == WAIT_FAILED) {
+        /* Something serious is wrong */
+        ap_log_error(APLOG_MARK,APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00420)
+                     "master_main: WaitForMultipleObjects WAIT_FAILED -- doing server shutdown");
+        shutdown_pending = 1;
+    }
+    else if (rv == WAIT_TIMEOUT) {
+        /* Hey, this cannot happen */
+        ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00421)
+                     "master_main: WaitForMultipleObjects with INFINITE wait exited with WAIT_TIMEOUT");
+        shutdown_pending = 1;
+    }
+    else if (cld == SHUTDOWN_HANDLE) {
+        /* shutdown_event signalled */
+        shutdown_pending = 1;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, s, APLOGNO(00422)
+                     "Parent: Received shutdown signal -- Shutting down the server.");
+        if (ResetEvent(shutdown_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00423)
+                         "ResetEvent(shutdown_event)");
+        }
+    }
+    else if (cld == RESTART_HANDLE) {
+        /* Received a restart event. Prepare the restart_event to be reused
+         * then signal the child process to exit.
+         */
+        restart_pending = 1;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s, APLOGNO(00424)
+                     "Parent: Received restart signal -- Restarting the server.");
+        if (ResetEvent(restart_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00425)
+                         "Parent: ResetEvent(restart_event) failed.");
+        }
+        if (SetEvent(child_exit_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00426)
+                         "Parent: SetEvent for child process event %pp failed.",
+                         event_handles[CHILD_HANDLE]);
+        }
+        /* Don't wait to verify that the child process really exits,
+         * just move on with the restart.
+         */
+        CloseHandle(event_handles[CHILD_HANDLE]);
+        event_handles[CHILD_HANDLE] = NULL;
+    }
+    else {
+        /* The child process exited prematurely due to a fatal error. */
+        DWORD exitcode;
+        if (!GetExitCodeProcess(event_handles[CHILD_HANDLE], &exitcode)) {
+            /* HUH? We did exit, didn't we? */
+            exitcode = APEXIT_CHILDFATAL;
+        }
+        if (   exitcode == APEXIT_CHILDFATAL
+            || exitcode == APEXIT_CHILDINIT
+            || exitcode == APEXIT_INIT) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, 0, ap_server_conf, APLOGNO(00427)
+                         "Parent: child process %lu exited with status %lu -- Aborting.",
+                         child_pid, exitcode);
+            shutdown_pending = 1;
+        }
+        else {
+            int i;
+            restart_pending = 1;
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00428)
+                         "Parent: child process %lu exited with status %lu -- Restarting.",
+                         child_pid, exitcode);
+            for (i = 0; i < ap_threads_per_child; i++) {
+                ap_update_child_status_from_indexes(0, i, SERVER_DEAD, NULL);
+            }
+        }
+        CloseHandle(event_handles[CHILD_HANDLE]);
+        event_handles[CHILD_HANDLE] = NULL;
+    }
+
+    winnt_note_child_killed(/* slot */ 0);
+
+    if (restart_pending) {
+        ++my_generation;
+        ap_scoreboard_image->global->running_generation = my_generation;
+    }
+die_now:
+    if (shutdown_pending)
+    {
+        int timeout = 30000;  /* Timeout is milliseconds */
+        winnt_mpm_state = AP_MPMQ_STOPPING;
+
+        if (!child_created) {
+            return 0;  /* Tell the caller we do not want to restart */
+        }
+
+        /* This shutdown is only marginally graceful. We will give the
+         * child a bit of time to exit gracefully. If the time expires,
+         * the child will be wacked.
+         */
+        if (!strcasecmp(signal_arg, "runservice")) {
+            mpm_service_stopping();
+        }
+        /* Signal the child processes to exit */
+        if (SetEvent(child_exit_event) == 0) {
+                ap_log_error(APLOG_MARK,APLOG_ERR, apr_get_os_error(), ap_server_conf, APLOGNO(00429)
+                             "Parent: SetEvent for child process event %pp failed",
+                             event_handles[CHILD_HANDLE]);
+        }
+        if (event_handles[CHILD_HANDLE]) {
+            rv = WaitForSingleObject(event_handles[CHILD_HANDLE], timeout);
+            if (rv == WAIT_OBJECT_0) {
+                ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00430)
+                             "Parent: Child process %lu exited successfully.", child_pid);
+                CloseHandle(event_handles[CHILD_HANDLE]);
+                event_handles[CHILD_HANDLE] = NULL;
+            }
+            else {
+                ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00431)
+                             "Parent: Forcing termination of child process %lu",
+                             child_pid);
+                TerminateProcess(event_handles[CHILD_HANDLE], 1);
+                CloseHandle(event_handles[CHILD_HANDLE]);
+                event_handles[CHILD_HANDLE] = NULL;
+            }
+        }
+        CloseHandle(child_exit_event);
+        return 0;  /* Tell the caller we do not want to restart */
+    }
+    winnt_mpm_state = AP_MPMQ_STARTING;
+    CloseHandle(child_exit_event);
+    return 1;      /* Tell the caller we want a restart */
+}
+
+/* service_nt_main_fn needs to append the StartService() args
+ * outside of our call stack and thread as the service starts...
+ */
+apr_array_header_t *mpm_new_argv;
+
+/* Remember service_to_start failures to log and fail in pre_config.
+ * Remember inst_argc and inst_argv for installing or starting the
+ * service after we preflight the config.
+ */
+
+static int winnt_query(int query_code, int *result, apr_status_t *rv)
+{
+    *rv = APR_SUCCESS;
+    switch (query_code) {
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = MAXIMUM_WAIT_OBJECTS;
+            break;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_STATIC;
+            break;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_NOT_SUPPORTED;
+            break;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = HARD_SERVER_LIMIT;
+            break;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = thread_limit;
+            break;
+        case AP_MPMQ_MAX_THREADS:
+            *result = ap_threads_per_child;
+            break;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            break;
+        case AP_MPMQ_MIN_SPARE_THREADS:
+            *result = 0;
+            break;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            break;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = 0;
+            break;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            break;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = 1;
+            break;
+        case AP_MPMQ_MPM_STATE:
+            *result = winnt_mpm_state;
+            break;
+        case AP_MPMQ_GENERATION:
+            *result = my_generation;
+            break;
+        default:
+            *rv = APR_ENOTIMPL;
+            break;
+    }
+    return OK;
+}
+
+static const char *winnt_get_name(void)
+{
+    return "WinNT";
+}
+
+#define SERVICE_UNSET (-1)
+static apr_status_t service_set = SERVICE_UNSET;
+static apr_status_t service_to_start_success;
+static int inst_argc;
+static const char * const *inst_argv;
+static const char *service_name = NULL;
+
+static void winnt_rewrite_args(process_rec *process)
+{
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k runservice [transition in service context only]
+     *   -k install
+     *   -k config
+     *   -k uninstall
+     *   -k stop
+     *   -k shutdown (same as -k stop). Maintained for backward compatibility.
+     *
+     * We can't leave this phase until we know our identity
+     * and modify the command arguments appropriately.
+     *
+     * We do not care if the .conf file exists or is parsable when
+     * attempting to stop or uninstall a service.
+     */
+    apr_status_t rv;
+    char *def_server_root;
+    char *binpath;
+    char optbuf[3];
+    const char *opt_arg;
+    int fixed_args;
+    char *pid;
+    apr_getopt_t *opt;
+    int running_as_service = 1;
+    int errout = 0;
+    apr_file_t *nullfile;
+
+    pconf = process->pconf;
+
+    osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+    GetVersionEx(&osver);
+
+    /* We wish this was *always* a reservation, but sadly it wasn't so and
+     * we couldn't break a hard limit prior to NT Kernel 5.1
+     */
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT
+        && ((osver.dwMajorVersion > 5)
+         || ((osver.dwMajorVersion == 5) && (osver.dwMinorVersion > 0)))) {
+        stack_res_flag = STACK_SIZE_PARAM_IS_A_RESERVATION;
+    }
+
+    /* AP_PARENT_PID is only valid in the child */
+    pid = getenv("AP_PARENT_PID");
+    if (pid)
+    {
+        HANDLE filehand;
+        HANDLE hproc = GetCurrentProcess();
+        DWORD BytesRead;
+
+        /* This is the child */
+        my_pid = GetCurrentProcessId();
+        parent_pid = (DWORD) atol(pid);
+
+        /* Prevent holding open the (nonexistent) console */
+        ap_real_exit_code = 0;
+
+        /* The parent gave us stdin, we need to remember this
+         * handle, and no longer inherit it at our children
+         * (we can't slurp it up now, we just aren't ready yet).
+         * The original handle is closed below, at apr_file_dup2()
+         */
+        pipe = GetStdHandle(STD_INPUT_HANDLE);
+        if (DuplicateHandle(hproc, pipe,
+                            hproc, &filehand, 0, FALSE,
+                            DUPLICATE_SAME_ACCESS)) {
+            pipe = filehand;
+        }
+
+        /* The parent gave us stdout of the NUL device,
+         * and expects us to suck up stdin of all of our
+         * shared handles and data from the parent.
+         * Don't infect child processes with our stdin
+         * handle, use another handle to NUL!
+         */
+        {
+            apr_file_t *infile, *outfile;
+            if ((apr_file_open_stdout(&outfile, process->pool) == APR_SUCCESS)
+             && (apr_file_open_stdin(&infile, process->pool) == APR_SUCCESS))
+                apr_file_dup2(infile, outfile, process->pool);
+        }
+
+        /* This child needs the existing stderr opened for logging,
+         * already
+         */
+
+        /* Read this child's generation number as soon as now,
+         * so that further hooks can query it.
+         */
+        if (!ReadFile(pipe, &my_generation, sizeof(my_generation),
+                      &BytesRead, (LPOVERLAPPED) NULL)
+                || (BytesRead != sizeof(my_generation))) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), NULL, APLOGNO(02965)
+                         "Child: Unable to retrieve my generation from the parent");
+            exit(APEXIT_CHILDINIT);
+        }
+
+        /* The parent is responsible for providing the
+         * COMPLETE ARGUMENTS REQUIRED to the child.
+         *
+         * No further argument parsing is needed, but
+         * for good measure we will provide a simple
+         * signal string for later testing.
+         */
+        signal_arg = "runchild";
+        return;
+    }
+
+    /* This is the parent, we have a long way to go :-) */
+    parent_pid = my_pid = GetCurrentProcessId();
+
+    /* This behavior is voided by setting real_exit_code to 0 */
+    atexit(hold_console_open_on_error);
+
+    /* Rewrite process->argv[];
+     *
+     * strip out -k signal into signal_arg
+     * strip out -n servicename and set the names
+     * add default -d serverroot from the path of this executable
+     *
+     * The end result will look like:
+     *
+     * The invocation command (%0)
+     *     The -d serverroot default from the running executable
+     *         The requested service's (-n) registry ConfigArgs
+     *             The WinNT SCM's StartService() args
+     */
+    if ((rv = ap_os_proc_filepath(&binpath, process->pconf))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK,APLOG_CRIT, rv, NULL, APLOGNO(00432)
+                     "Failed to get the full path of %s", process->argv[0]);
+        exit(APEXIT_INIT);
+    }
+    /* WARNING: There is an implicit assumption here that the
+     * executable resides in ServerRoot or ServerRoot\bin
+     */
+    def_server_root = (char *) apr_filepath_name_get(binpath);
+    if (def_server_root > binpath) {
+        *(def_server_root - 1) = '\0';
+        def_server_root = (char *) apr_filepath_name_get(binpath);
+        if (!strcasecmp(def_server_root, "bin"))
+            *(def_server_root - 1) = '\0';
+    }
+    apr_filepath_merge(&def_server_root, NULL, binpath,
+                       APR_FILEPATH_TRUENAME, process->pool);
+
+    /* Use process->pool so that the rewritten argv
+     * lasts for the lifetime of the server process,
+     * because pconf will be destroyed after the
+     * initial pre-flight of the config parser.
+     */
+    mpm_new_argv = apr_array_make(process->pool, process->argc + 2,
+                                  sizeof(const char *));
+    *(const char **)apr_array_push(mpm_new_argv) = process->argv[0];
+    *(const char **)apr_array_push(mpm_new_argv) = "-d";
+    *(const char **)apr_array_push(mpm_new_argv) = def_server_root;
+
+    fixed_args = mpm_new_argv->nelts;
+
+    optbuf[0] = '-';
+    optbuf[2] = '\0';
+    apr_getopt_init(&opt, process->pool, process->argc, process->argv);
+    opt->errfn = NULL;
+    while ((rv = apr_getopt(opt, "wn:k:" AP_SERVER_BASEARGS,
+                            optbuf + 1, &opt_arg)) == APR_SUCCESS) {
+        switch (optbuf[1]) {
+
+        /* Shortcuts; include the -w option to hold the window open on error.
+         * This must not be toggled once we reset ap_real_exit_code to 0!
+         */
+        case 'w':
+            if (ap_real_exit_code)
+                ap_real_exit_code = 2;
+            break;
+
+        case 'n':
+            service_set = mpm_service_set_name(process->pool, &service_name,
+                                               opt_arg);
+            break;
+
+        case 'k':
+            signal_arg = opt_arg;
+            break;
+
+        case 'E':
+            errout = 1;
+            /* Fall through so the Apache main() handles the 'E' arg */
+        default:
+            *(const char **)apr_array_push(mpm_new_argv) =
+                apr_pstrdup(process->pool, optbuf);
+
+            if (opt_arg) {
+                *(const char **)apr_array_push(mpm_new_argv) = opt_arg;
+            }
+            break;
+        }
+    }
+
+    /* back up to capture the bad argument */
+    if (rv == APR_BADCH || rv == APR_BADARG) {
+        opt->ind--;
+    }
+
+    while (opt->ind < opt->argc) {
+        *(const char **)apr_array_push(mpm_new_argv) =
+            apr_pstrdup(process->pool, opt->argv[opt->ind++]);
+    }
+
+    /* Track the number of args actually entered by the user */
+    inst_argc = mpm_new_argv->nelts - fixed_args;
+
+    /* Provide a default 'run' -k arg to simplify signal_arg tests */
+    if (!signal_arg)
+    {
+        signal_arg = "run";
+        running_as_service = 0;
+    }
+
+    if (!strcasecmp(signal_arg, "runservice"))
+    {
+        /* Start the NT Service _NOW_ because the WinNT SCM is
+         * expecting us to rapidly assume control of our own
+         * process, the SCM will tell us our service name, and
+         * may have extra StartService() command arguments to
+         * add for us.
+         *
+         * The SCM will generally invoke the executable with
+         * the c:\win\system32 default directory.  This is very
+         * lethal if folks use ServerRoot /foopath on windows
+         * without a drive letter.  Change to the default root
+         * (path to apache root, above /bin) for safety.
+         */
+        apr_filepath_set(def_server_root, process->pool);
+
+        /* Any other process has a console, so we don't to begin
+         * a Win9x service until the configuration is parsed and
+         * any command line errors are reported.
+         *
+         * We hold the return value so that we can die in pre_config
+         * after logging begins, and the failure can land in the log.
+         */
+        if (!errout) {
+            mpm_nt_eventlog_stderr_open(service_name, process->pool);
+        }
+        service_to_start_success = mpm_service_to_start(&service_name,
+                                                        process->pool);
+        if (service_to_start_success == APR_SUCCESS) {
+            service_set = APR_SUCCESS;
+        }
+
+        /* Open a null handle to soak stdout in this process.
+         * Windows service processes are missing any file handle
+         * usable for stdin/out/err.  This was the cause of later
+         * trouble with invocations of apr_file_open_stdout()
+         */
+        if ((rv = apr_file_open(&nullfile, "NUL",
+                                APR_READ | APR_WRITE, APR_OS_DEFAULT,
+                                process->pool)) == APR_SUCCESS) {
+            apr_file_t *nullstdout;
+            if (apr_file_open_stdout(&nullstdout, process->pool)
+                    == APR_SUCCESS)
+                apr_file_dup2(nullstdout, nullfile, process->pool);
+            apr_file_close(nullfile);
+        }
+    }
+
+    /* Get the default for any -k option, except run */
+    if (service_set == SERVICE_UNSET && strcasecmp(signal_arg, "run")) {
+        service_set = mpm_service_set_name(process->pool, &service_name,
+                                           AP_DEFAULT_SERVICE_NAME);
+    }
+
+    if (!strcasecmp(signal_arg, "install")) /* -k install */
+    {
+        if (service_set == APR_SUCCESS)
+        {
+            ap_log_error(APLOG_MARK,APLOG_ERR, 0, NULL, APLOGNO(00433)
+                 "%s: Service is already installed.", service_name);
+            exit(APEXIT_INIT);
+        }
+    }
+    else if (running_as_service)
+    {
+        if (service_set == APR_SUCCESS)
+        {
+            /* Attempt to Uninstall, or stop, before
+             * we can read the arguments or .conf files
+             */
+            if (!strcasecmp(signal_arg, "uninstall")) {
+                rv = mpm_service_uninstall();
+                exit(rv);
+            }
+
+            if ((!strcasecmp(signal_arg, "stop")) ||
+                (!strcasecmp(signal_arg, "shutdown"))) {
+                mpm_signal_service(process->pool, 0);
+                exit(0);
+            }
+
+            rv = mpm_merge_service_args(process->pool, mpm_new_argv,
+                                        fixed_args);
+            if (rv == APR_SUCCESS) {
+                ap_log_error(APLOG_MARK,APLOG_INFO, 0, NULL, APLOGNO(00434)
+                             "Using ConfigArgs of the installed service "
+                             "\"%s\".", service_name);
+            }
+            else  {
+                ap_log_error(APLOG_MARK,APLOG_WARNING, rv, NULL, APLOGNO(00435)
+                             "No installed ConfigArgs for the service "
+                             "\"%s\", using Apache defaults.", service_name);
+            }
+        }
+        else
+        {
+            ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL, APLOGNO(00436)
+                 "No installed service named \"%s\".", service_name);
+            exit(APEXIT_INIT);
+        }
+    }
+    if (strcasecmp(signal_arg, "install") && service_set && service_set != SERVICE_UNSET)
+    {
+        ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL, APLOGNO(00437)
+             "No installed service named \"%s\".", service_name);
+        exit(APEXIT_INIT);
+    }
+
+    /* Track the args actually entered by the user.
+     * These will be used for the -k install parameters, as well as
+     * for the -k start service override arguments.
+     */
+    inst_argv = (const char * const *)mpm_new_argv->elts
+        + mpm_new_argv->nelts - inst_argc;
+
+    /* Now, do service install or reconfigure then proceed to
+     * post_config to test the installed configuration.
+     */
+    if (!strcasecmp(signal_arg, "config")) { /* -k config */
+        /* Reconfigure the service */
+        rv = mpm_service_install(process->pool, inst_argc, inst_argv, 1);
+        if (rv != APR_SUCCESS) {
+            exit(rv);
+        }
+
+        fprintf(stderr,"Testing httpd.conf....\n");
+        fprintf(stderr,"Errors reported here must be corrected before the "
+                "service can be started.\n");
+    }
+    else if (!strcasecmp(signal_arg, "install")) { /* -k install */
+        /* Install the service */
+        rv = mpm_service_install(process->pool, inst_argc, inst_argv, 0);
+        if (rv != APR_SUCCESS) {
+            exit(rv);
+        }
+
+        fprintf(stderr,"Testing httpd.conf....\n");
+        fprintf(stderr,"Errors reported here must be corrected before the "
+                "service can be started.\n");
+    }
+
+    process->argc = mpm_new_argv->nelts;
+    process->argv = (const char * const *) mpm_new_argv->elts;
+}
+
+
+static int winnt_pre_config(apr_pool_t *pconf_, apr_pool_t *plog, apr_pool_t *ptemp)
+{
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k runservice [WinNT errors logged from rewrite_args]
+     */
+
+    /* Initialize shared static objects.
+     * TODO: Put config related statics into an sconf structure.
+     */
+    pconf = pconf_;
+
+    if (ap_exists_config_define("ONE_PROCESS") ||
+        ap_exists_config_define("DEBUG"))
+        one_process = -1;
+
+    /* XXX: presume proper privileges; one nice thing would be
+     * a loud emit if running as "LocalSystem"/"SYSTEM" to indicate
+     * they should change to a user with write access to logs/ alone.
+     */
+    ap_sys_privileges_handlers(1);
+
+    if (!strcasecmp(signal_arg, "runservice")
+            && (service_to_start_success != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK,APLOG_CRIT, service_to_start_success, NULL, APLOGNO(00438)
+                     "%s: Unable to start the service manager.",
+                     service_name);
+        exit(APEXIT_INIT);
+    }
+    else if (ap_state_query(AP_SQ_RUN_MODE) == AP_SQ_RM_NORMAL
+             && !one_process && !my_generation) {
+        /* Open a null handle to soak stdout in this process.
+         * We need to emulate apr_proc_detach, unix performs this
+         * same check in the pre_config hook (although it is
+         * arguably premature).  Services already fixed this.
+         */
+        apr_file_t *nullfile;
+        apr_status_t rv;
+        apr_pool_t *pproc = apr_pool_parent_get(pconf);
+
+        if ((rv = apr_file_open(&nullfile, "NUL",
+                                APR_READ | APR_WRITE, APR_OS_DEFAULT,
+                                pproc)) == APR_SUCCESS) {
+            apr_file_t *nullstdout;
+            if (apr_file_open_stdout(&nullstdout, pproc)
+                    == APR_SUCCESS)
+                apr_file_dup2(nullstdout, nullfile, pproc);
+            apr_file_close(nullfile);
+        }
+    }
+
+    ap_listen_pre_config();
+    thread_limit = DEFAULT_THREAD_LIMIT;
+    ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
+
+    return OK;
+}
+
+static int winnt_check_config(apr_pool_t *pconf, apr_pool_t *plog,
+                              apr_pool_t *ptemp, server_rec* s)
+{
+    int is_parent;
+    int startup = 0;
+
+    /* We want this only in the parent and only the first time around */
+    is_parent = (parent_pid == my_pid);
+    if (is_parent &&
+        ap_state_query(AP_SQ_MAIN_STATE) == AP_SQ_MS_CREATE_PRE_CONFIG) {
+        startup = 1;
+    }
+
+    if (thread_limit > MAX_THREAD_LIMIT) {
+        if (startup) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00439)
+                         "WARNING: ThreadLimit of %d exceeds compile-time "
+                         "limit of %d threads, decreasing to %d.",
+                         thread_limit, MAX_THREAD_LIMIT, MAX_THREAD_LIMIT);
+        } else if (is_parent) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00440)
+                         "ThreadLimit of %d exceeds compile-time limit "
+                         "of %d, decreasing to match",
+                         thread_limit, MAX_THREAD_LIMIT);
+        }
+        thread_limit = MAX_THREAD_LIMIT;
+    }
+    else if (thread_limit < 1) {
+        if (startup) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00441)
+                         "WARNING: ThreadLimit of %d not allowed, "
+                         "increasing to 1.", thread_limit);
+        } else if (is_parent) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00442)
+                         "ThreadLimit of %d not allowed, increasing to 1",
+                         thread_limit);
+        }
+        thread_limit = 1;
+    }
+
+    /* You cannot change ThreadLimit across a restart; ignore
+     * any such attempts.
+     */
+    if (!first_thread_limit) {
+        first_thread_limit = thread_limit;
+    }
+    else if (thread_limit != first_thread_limit) {
+        /* Don't need a startup console version here */
+        if (is_parent) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00443)
+                         "changing ThreadLimit to %d from original value "
+                         "of %d not allowed during restart",
+                         thread_limit, first_thread_limit);
+        }
+        thread_limit = first_thread_limit;
+    }
+
+    if (ap_threads_per_child > thread_limit) {
+        if (startup) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00444)
+                         "WARNING: ThreadsPerChild of %d exceeds ThreadLimit "
+                         "of %d threads, decreasing to %d. To increase, please "
+                         "see the ThreadLimit directive.",
+                         ap_threads_per_child, thread_limit, thread_limit);
+        } else if (is_parent) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00445)
+                         "ThreadsPerChild of %d exceeds ThreadLimit "
+                         "of %d, decreasing to match",
+                         ap_threads_per_child, thread_limit);
+        }
+        ap_threads_per_child = thread_limit;
+    }
+    else if (ap_threads_per_child < 1) {
+        if (startup) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00446)
+                         "WARNING: ThreadsPerChild of %d not allowed, "
+                         "increasing to 1.", ap_threads_per_child);
+        } else if (is_parent) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00447)
+                         "ThreadsPerChild of %d not allowed, increasing to 1",
+                         ap_threads_per_child);
+        }
+        ap_threads_per_child = 1;
+    }
+
+    return OK;
+}
+
+static int winnt_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec* s)
+{
+    apr_status_t rv = 0;
+
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k install (catch and exit as install was handled in rewrite_args)
+     *   -k config  (catch and exit as config was handled in rewrite_args)
+     *   -k start
+     *   -k restart
+     *   -k runservice [Win95, only once - after we parsed the config]
+     *
+     * because all of these signals are useful _only_ if there
+     * is a valid conf\httpd.conf environment to start.
+     *
+     * We reached this phase by avoiding errors that would cause
+     * these options to fail unexpectedly in another process.
+     */
+
+    if (!strcasecmp(signal_arg, "install")) {
+        /* Service install happens in the rewrite_args hooks. If we
+         * made it this far, the server configuration is clean and the
+         * service will successfully start.
+         */
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(0);
+    }
+    if (!strcasecmp(signal_arg, "config")) {
+        /* Service reconfiguration happens in the rewrite_args hooks. If we
+         * made it this far, the server configuration is clean and the
+         * service will successfully start.
+         */
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(0);
+    }
+
+    if (!strcasecmp(signal_arg, "start")) {
+        ap_listen_rec *lr;
+
+        /* Close the listening sockets. */
+        for (lr = ap_listeners; lr; lr = lr->next) {
+            apr_socket_close(lr->sd);
+            lr->active = 0;
+        }
+        rv = mpm_service_start(ptemp, inst_argc, inst_argv);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit (rv);
+    }
+
+    if (!strcasecmp(signal_arg, "restart")) {
+        mpm_signal_service(ptemp, 1);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit (rv);
+    }
+
+    if (parent_pid == my_pid)
+    {
+        if (ap_state_query(AP_SQ_MAIN_STATE) != AP_SQ_MS_CREATE_PRE_CONFIG
+            && ap_state_query(AP_SQ_CONFIG_GEN) == 1)
+        {
+            /* This code should be run once in the parent and not run
+             * across a restart
+             */
+            setup_signal_names(apr_psprintf(pconf, "ap%lu", parent_pid));
+
+            ap_log_pid(pconf, ap_pid_fname);
+
+            /* Create shutdown event, apPID_shutdown, where PID is the parent
+             * Apache process ID. Shutdown is signaled by 'apache -k shutdown'.
+             */
+            shutdown_event = CreateEvent(NULL, FALSE, FALSE, signal_shutdown_name);
+            if (!shutdown_event) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00448)
+                             "Parent: Cannot create shutdown event %s", signal_shutdown_name);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+
+            /* Create restart event, apPID_restart, where PID is the parent
+             * Apache process ID. Restart is signaled by 'apache -k restart'.
+             */
+            restart_event = CreateEvent(NULL, FALSE, FALSE, signal_restart_name);
+            if (!restart_event) {
+                CloseHandle(shutdown_event);
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00449)
+                             "Parent: Cannot create restart event %s", signal_restart_name);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+
+            /* Create the start mutex, as an unnamed object for security.
+             * The start mutex is used during a restart to prevent more than
+             * one child process from entering the accept loop at once.
+             */
+            rv =  apr_proc_mutex_create(&start_mutex, NULL,
+                                        APR_LOCK_DEFAULT,
+                                        ap_server_conf->process->pool);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf, APLOGNO(00450)
+                             "%s: Unable to create the start_mutex.",
+                             service_name);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+        }
+        /* Always reset our console handler to be the first, even on a restart
+        *  because some modules (e.g. mod_perl) might have set a console
+        *  handler to terminate the process.
+        */
+        if (strcasecmp(signal_arg, "runservice"))
+            mpm_start_console_handler();
+    }
+    else /* parent_pid != my_pid */
+    {
+        mpm_start_child_console_handler();
+    }
+    return OK;
+}
+
+/* This really should be a post_config hook, but the error log is already
+ * redirected by that point, so we need to do this in the open_logs phase.
+ */
+static int winnt_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    /* Initialize shared static objects.
+     */
+    if (parent_pid != my_pid) {
+        return OK;
+    }
+
+    /* We cannot initialize our listeners if we are restarting
+     * (the parent process already has glomed on to them)
+     * nor should we do so for service reconfiguration
+     * (since the service may already be running.)
+     */
+    if (!strcasecmp(signal_arg, "restart")
+            || !strcasecmp(signal_arg, "config")) {
+        return OK;
+    }
+
+    if (ap_setup_listeners(s) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
+                     NULL, APLOGNO(00451) "no listening sockets available, shutting down");
+        return !OK;
+    }
+
+    return OK;
+}
+
+static void winnt_child_init(apr_pool_t *pchild, struct server_rec *s)
+{
+    apr_status_t rv;
+
+    setup_signal_names(apr_psprintf(pchild, "ap%lu", parent_pid));
+
+    /* This is a child process, not in single process mode */
+    if (!one_process) {
+        /* Set up events and the scoreboard */
+        get_handles_from_parent(s, &exit_event, &start_mutex,
+                                &ap_scoreboard_shm);
+
+        /* Set up the listeners */
+        get_listeners_from_parent(s);
+
+        /* Done reading from the parent, close that channel */
+        CloseHandle(pipe);
+    }
+    else {
+        /* Single process mode - this lock doesn't even need to exist */
+        rv = apr_proc_mutex_create(&start_mutex, signal_name_prefix,
+                                   APR_LOCK_DEFAULT, s->process->pool);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf, APLOGNO(00452)
+                         "%s child: Unable to init the start_mutex.",
+                         service_name);
+            exit(APEXIT_CHILDINIT);
+        }
+
+        /* Borrow the shutdown_even as our _child_ loop exit event */
+        exit_event = shutdown_event;
+    }
+}
+
+
+static int winnt_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s )
+{
+    static int restart = 0;            /* Default is "not a restart" */
+
+    /* ### If non-graceful restarts are ever introduced - we need to rerun
+     * the pre_mpm hook on subsequent non-graceful restarts.  But Win32
+     * has only graceful style restarts - and we need this hook to act
+     * the same on Win32 as on Unix.
+     */
+    if (!restart && ((parent_pid == my_pid) || one_process)) {
+        /* Set up the scoreboard. */
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            return !OK;
+        }
+    }
+
+    if ((parent_pid != my_pid) || one_process)
+    {
+        /* The child process or in one_process (debug) mode
+         */
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00453)
+                     "Child process is running");
+
+        child_main(pconf, parent_pid);
+
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00454)
+                     "Child process is exiting");
+        return DONE;
+    }
+    else
+    {
+        /* A real-honest to goodness parent */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, APLOGNO(00455)
+                     "%s configured -- resuming normal operations",
+                     ap_get_server_description());
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, APLOGNO(00456)
+                     "Server built: %s", ap_get_server_built());
+        ap_log_command_line(plog, s);
+        ap_log_mpm_common(s);
+
+        restart = master_main(ap_server_conf, shutdown_event, restart_event);
+
+        if (!restart)
+        {
+            /* Shutting down. Clean up... */
+            ap_remove_pid(pconf, ap_pid_fname);
+            apr_proc_mutex_destroy(start_mutex);
+
+            CloseHandle(restart_event);
+            CloseHandle(shutdown_event);
+
+            return DONE;
+        }
+    }
+
+    return OK; /* Restart */
+}
+
+static void winnt_hooks(apr_pool_t *p)
+{
+    /* Our open_logs hook function must run before the core's, or stderr
+     * will be redirected to a file, and the messages won't print to the
+     * console.
+     */
+    static const char *const aszSucc[] = {"core.c", NULL};
+
+    ap_hook_pre_config(winnt_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_check_config(winnt_check_config, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_post_config(winnt_post_config, NULL, NULL, 0);
+    ap_hook_child_init(winnt_child_init, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_open_logs(winnt_open_logs, NULL, aszSucc, APR_HOOK_REALLY_FIRST);
+    ap_hook_mpm(winnt_run, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_mpm_query(winnt_query, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_mpm_get_name(winnt_get_name, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+AP_DECLARE_MODULE(mpm_winnt) = {
+    MPM20_MODULE_STUFF,
+    winnt_rewrite_args,    /* hook to run before apache parses args */
+    NULL,                  /* create per-directory config structure */
+    NULL,                  /* merge per-directory config structures */
+    NULL,                  /* create per-server config structure */
+    NULL,                  /* merge per-server config structures */
+    winnt_cmds,            /* command apr_table_t */
+    winnt_hooks            /* register_hooks */
+};
+
+#endif /* def WIN32 */
diff --git a/server/mpm/winnt/mpm_winnt.h b/server/mpm/winnt/mpm_winnt.h
new file mode 100644
index 0000000..22ba001
--- /dev/null
+++ b/server/mpm/winnt/mpm_winnt.h
@@ -0,0 +1,96 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file  mpm_winnt.h
+ * @brief WinNT MPM specific
+ *
+ * @addtogroup APACHE_MPM_WINNT
+ * @{
+ */
+
+#ifndef APACHE_MPM_WINNT_H
+#define APACHE_MPM_WINNT_H
+
+#include "apr_proc_mutex.h"
+#include "ap_listen.h"
+
+/* From service.c: */
+
+#define SERVICE_APACHE_RESTART 128
+
+#ifndef AP_DEFAULT_SERVICE_NAME
+#define AP_DEFAULT_SERVICE_NAME "Apache2.4"
+#endif
+
+#define SERVICECONFIG "System\\CurrentControlSet\\Services\\%s"
+#define SERVICEPARAMS "System\\CurrentControlSet\\Services\\%s\\Parameters"
+
+apr_status_t mpm_service_set_name(apr_pool_t *p, const char **display_name,
+                                                 const char *set_name);
+apr_status_t mpm_merge_service_args(apr_pool_t *p, apr_array_header_t *args,
+                                   int fixed_args);
+
+apr_status_t mpm_service_to_start(const char **display_name, apr_pool_t *p);
+apr_status_t mpm_service_started(void);
+apr_status_t mpm_service_install(apr_pool_t *ptemp, int argc,
+                                char const* const* argv, int reconfig);
+apr_status_t mpm_service_uninstall(void);
+
+apr_status_t mpm_service_start(apr_pool_t *ptemp, int argc,
+                              char const* const* argv);
+
+void mpm_signal_service(apr_pool_t *ptemp, int signal);
+
+void mpm_service_stopping(void);
+
+void mpm_start_console_handler(void);
+void mpm_start_child_console_handler(void);
+
+/* From nt_eventlog.c: */
+
+void mpm_nt_eventlog_stderr_open(const char *display_name, apr_pool_t *p);
+void mpm_nt_eventlog_stderr_flush(void);
+
+/* From mpm_winnt.c: */
+
+extern module AP_MODULE_DECLARE_DATA mpm_winnt_module;
+extern int ap_threads_per_child;
+
+extern DWORD my_pid;
+extern apr_proc_mutex_t *start_mutex;
+extern HANDLE exit_event;
+
+extern int winnt_mpm_state;
+extern OSVERSIONINFO osver;
+extern DWORD stack_res_flag;
+
+extern void clean_child_exit(int);
+
+typedef enum {
+    SIGNAL_PARENT_SHUTDOWN,
+    SIGNAL_PARENT_RESTART,
+    SIGNAL_PARENT_RESTART_GRACEFUL
+} ap_signal_parent_e;
+AP_DECLARE(void) ap_signal_parent(ap_signal_parent_e type);
+
+void hold_console_open_on_error(void);
+
+/* From child.c: */
+void child_main(apr_pool_t *pconf, DWORD parent_pid);
+
+#endif /* APACHE_MPM_WINNT_H */
+/** @} */
diff --git a/server/mpm/winnt/nt_eventlog.c b/server/mpm/winnt/nt_eventlog.c
new file mode 100644
index 0000000..cd49ee6
--- /dev/null
+++ b/server/mpm/winnt/nt_eventlog.c
@@ -0,0 +1,172 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "httpd.h"
+#include "http_log.h"
+#include "mpm_winnt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "apr_portable.h"
+#include "ap_regkey.h"
+
+static const char *display_name  = NULL;
+static HANDLE stderr_thread = NULL;
+static HANDLE stderr_ready;
+
+static DWORD WINAPI service_stderr_thread(LPVOID hPipe)
+{
+    HANDLE hPipeRead = (HANDLE) hPipe;
+    HANDLE hEventSource;
+    char errbuf[256];
+    char *errmsg = errbuf;
+    const char *errarg[9];
+    DWORD errres;
+    ap_regkey_t *regkey;
+    apr_status_t rv;
+    apr_pool_t *p;
+
+    apr_pool_create_ex(&p, NULL, NULL, NULL);
+    apr_pool_tag(p, "service_stderr_thread");
+
+    errarg[0] = "The Apache service named";
+    errarg[1] = display_name;
+    errarg[2] = "reported the following error:\r\n>>>";
+    errarg[3] = errbuf;
+    errarg[4] = NULL;
+    errarg[5] = NULL;
+    errarg[6] = NULL;
+    errarg[7] = NULL;
+    errarg[8] = NULL;
+
+    /* What are we going to do in here, bail on the user?  not. */
+    if ((rv = ap_regkey_open(&regkey, AP_REGKEY_LOCAL_MACHINE,
+                             "SYSTEM\\CurrentControlSet\\Services\\"
+                             "EventLog\\Application\\Apache Service",
+                             APR_READ | APR_WRITE | APR_CREATE, p))
+            == APR_SUCCESS)
+    {
+        DWORD dwData = EVENTLOG_ERROR_TYPE | EVENTLOG_WARNING_TYPE |
+                       EVENTLOG_INFORMATION_TYPE;
+
+        /* The stock message file */
+        ap_regkey_value_set(regkey, "EventMessageFile",
+                            "%SystemRoot%\\System32\\netmsg.dll",
+                            AP_REGKEY_EXPAND, p);
+
+        ap_regkey_value_raw_set(regkey, "TypesSupported", &dwData,
+                                sizeof(dwData), REG_DWORD, p);
+        ap_regkey_close(regkey);
+    }
+
+    hEventSource = RegisterEventSourceW(NULL, L"Apache Service");
+
+    SetEvent(stderr_ready);
+
+    while (ReadFile(hPipeRead, errmsg, 1, &errres, NULL) && (errres == 1))
+    {
+        if ((errmsg > errbuf) || !apr_isspace(*errmsg))
+        {
+            ++errmsg;
+            if ((*(errmsg - 1) == '\n')
+                    || (errmsg >= errbuf + sizeof(errbuf) - 1))
+            {
+                while ((errmsg > errbuf) && apr_isspace(*(errmsg - 1))) {
+                    --errmsg;
+                }
+                *errmsg = '\0';
+
+                /* Generic message: '%1 %2 %3 %4 %5 %6 %7 %8 %9'
+                 * The event code in netmsg.dll is 3299
+                 */
+                ReportEvent(hEventSource, EVENTLOG_ERROR_TYPE, 0,
+                            3299, NULL, 9, 0, errarg, NULL);
+                errmsg = errbuf;
+            }
+        }
+    }
+
+    if ((errres = GetLastError()) != ERROR_BROKEN_PIPE) {
+        apr_snprintf(errbuf, sizeof(errbuf),
+                     "Win32 error %lu reading stderr pipe stream\r\n",
+                     GetLastError());
+
+        ReportEvent(hEventSource, EVENTLOG_ERROR_TYPE, 0,
+                    3299, NULL, 9, 0, errarg, NULL);
+    }
+
+    CloseHandle(hPipeRead);
+    DeregisterEventSource(hEventSource);
+    CloseHandle(stderr_thread);
+    stderr_thread = NULL;
+    apr_pool_destroy(p);
+    return 0;
+}
+
+
+void mpm_nt_eventlog_stderr_flush(void)
+{
+    HANDLE cleanup_thread = stderr_thread;
+
+    if (cleanup_thread) {
+        HANDLE hErr = GetStdHandle(STD_ERROR_HANDLE);
+        fclose(stderr);
+        CloseHandle(hErr);
+        WaitForSingleObject(cleanup_thread, 30000);
+        CloseHandle(cleanup_thread);
+    }
+}
+
+
+void mpm_nt_eventlog_stderr_open(const char *argv0, apr_pool_t *p)
+{
+    SECURITY_ATTRIBUTES sa;
+    HANDLE hPipeRead = NULL;
+    HANDLE hPipeWrite = NULL;
+    DWORD  threadid;
+    apr_file_t *eventlog_file;
+    apr_file_t *stderr_file;
+
+    display_name = argv0;
+
+    /* Create a pipe to send stderr messages to the system error log.
+     *
+     * _dup2() duplicates the write handle inheritable for us.
+     */
+    sa.nLength = sizeof(sa);
+    sa.lpSecurityDescriptor = NULL;
+    sa.bInheritHandle = FALSE;
+    CreatePipe(&hPipeRead, &hPipeWrite, NULL, 0);
+    ap_assert(hPipeRead && hPipeWrite);
+
+    stderr_ready = CreateEvent(NULL, FALSE, FALSE, NULL);
+    stderr_thread = CreateThread(NULL, 65536, service_stderr_thread,
+                                 (LPVOID)hPipeRead, stack_res_flag, &threadid);
+    ap_assert(stderr_ready && stderr_thread);
+
+    WaitForSingleObject(stderr_ready, INFINITE);
+
+    if ((apr_file_open_stderr(&stderr_file, p)
+             == APR_SUCCESS)
+     && (apr_os_file_put(&eventlog_file, &hPipeWrite, APR_WRITE, p)
+             == APR_SUCCESS))
+        apr_file_dup2(stderr_file, eventlog_file, p);
+
+    /* The code above _will_ corrupt the StdHandle...
+     * and we must do so anyways.  We set this up only
+     * after we initialized the posix stderr API.
+     */
+    ap_open_stderr_log(p);
+}
diff --git a/server/mpm/winnt/service.c b/server/mpm/winnt/service.c
new file mode 100644
index 0000000..2e473cf
--- /dev/null
+++ b/server/mpm/winnt/service.c
@@ -0,0 +1,1241 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This module ALONE requires the window message API from user.h
+ * and the default APR include of windows.h will omit it, so
+ * preload the API symbols now...
+ */
+
+#define _WINUSER_
+
+#include "apr.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#if APR_HAS_UNICODE_FS
+#include "arch/win32/apr_arch_utf8.h"
+#include "arch/win32/apr_arch_misc.h"
+#include <wchar.h>
+#endif
+
+#include "httpd.h"
+#include "http_log.h"
+#include "mpm_winnt.h"
+#include "ap_regkey.h"
+
+#ifdef NOUSER
+#undef NOUSER
+#endif
+#undef _WINUSER_
+#include <winuser.h>
+#include <time.h>
+
+APLOG_USE_MODULE(mpm_winnt);
+
+/* Todo; clear up statics */
+static char *mpm_service_name = NULL;
+static char *mpm_display_name = NULL;
+
+#if APR_HAS_UNICODE_FS
+static apr_wchar_t *mpm_service_name_w;
+#endif
+
+typedef struct nt_service_ctx_t
+{
+    HANDLE mpm_thread;       /* primary thread handle of the apache server */
+    HANDLE service_thread;   /* thread service/monitor handle */
+    DWORD  service_thread_id;/* thread service/monitor ID */
+    HANDLE service_init;     /* controller thread init mutex */
+    HANDLE service_term;     /* NT service thread kill signal */
+    SERVICE_STATUS ssStatus;
+    SERVICE_STATUS_HANDLE hServiceStatus;
+} nt_service_ctx_t;
+
+static nt_service_ctx_t globdat;
+
+static int ReportStatusToSCMgr(int currentState, int waitHint,
+                               nt_service_ctx_t *ctx);
+
+/* Rather than repeat this logic throughout, create an either-or wide or narrow
+ * implementation because we don't actually pass strings to OpenSCManager.
+ * This election is based on build time defines and runtime os version test.
+ */
+#undef OpenSCManager
+typedef SC_HANDLE (WINAPI *fpt_OpenSCManager)(const void *lpMachine,
+                                              const void *lpDatabase,
+                                              DWORD dwAccess);
+static fpt_OpenSCManager pfn_OpenSCManager = NULL;
+static APR_INLINE SC_HANDLE OpenSCManager(const void *lpMachine,
+                                          const void *lpDatabase,
+                                          DWORD dwAccess)
+{
+    if (!pfn_OpenSCManager) {
+#if APR_HAS_UNICODE_FS
+        IF_WIN_OS_IS_UNICODE
+            pfn_OpenSCManager = (fpt_OpenSCManager)OpenSCManagerW;
+#endif
+#if APR_HAS_ANSI_FS
+        ELSE_WIN_OS_IS_ANSI
+            pfn_OpenSCManager = (fpt_OpenSCManager)OpenSCManagerA;
+#endif
+    }
+    return (*(pfn_OpenSCManager))(lpMachine, lpDatabase, dwAccess); 
+}
+
+/* exit() for Win32 is macro mapped (horrible, we agree) that allows us
+ * to catch the non-zero conditions and inform the console process that
+ * the application died, and hang on to the console a bit longer.
+ *
+ * The macro only maps for http_main.c and other sources that include
+ * the service.h header, so we best assume it's an error to exit from
+ * _any_ other module.
+ *
+ * If ap_real_exit_code is reset to 0, it will not be set or trigger this
+ * behavior on exit.  All service and child processes are expected to
+ * reset this flag to zero to avoid undesirable side effects.
+ */
+AP_DECLARE_DATA int ap_real_exit_code = 1;
+
+void hold_console_open_on_error(void)
+{
+    HANDLE hConIn;
+    HANDLE hConErr;
+    DWORD result;
+    time_t start;
+    time_t remains;
+    char *msg = "Note the errors or messages above, "
+                "and press the <ESC> key to exit.  ";
+    CONSOLE_SCREEN_BUFFER_INFO coninfo;
+    INPUT_RECORD in;
+    char count[16];
+
+    if (!ap_real_exit_code)
+        return;
+    hConIn = GetStdHandle(STD_INPUT_HANDLE);
+    hConErr = GetStdHandle(STD_ERROR_HANDLE);
+    if ((hConIn == INVALID_HANDLE_VALUE) || (hConErr == INVALID_HANDLE_VALUE))
+        return;
+    if (!WriteConsole(hConErr, msg, (DWORD)strlen(msg), &result, NULL) 
+            || !result)
+        return;
+    if (!GetConsoleScreenBufferInfo(hConErr, &coninfo))
+        return;
+    if (!SetConsoleMode(hConIn, ENABLE_MOUSE_INPUT | 0x80))
+        return;
+
+    start = time(NULL);
+    do
+    {
+        while (PeekConsoleInput(hConIn, &in, 1, &result) && result)
+        {
+            if (!ReadConsoleInput(hConIn, &in, 1, &result) || !result)
+                return;
+            if ((in.EventType == KEY_EVENT) && in.Event.KeyEvent.bKeyDown
+                    && (in.Event.KeyEvent.uChar.AsciiChar == 27))
+                return;
+            if (in.EventType == MOUSE_EVENT
+                    && (in.Event.MouseEvent.dwEventFlags == DOUBLE_CLICK))
+                return;
+        }
+        remains = ((start + 30) - time(NULL));
+        sprintf(count, "%d...",
+                (int)remains); /* 30 or less, so can't overflow int */
+        if (!SetConsoleCursorPosition(hConErr, coninfo.dwCursorPosition))
+            return;
+        if (!WriteConsole(hConErr, count, (DWORD)strlen(count), &result, NULL)
+                || !result)
+            return;
+    }
+    while ((remains > 0) && WaitForSingleObject(hConIn, 1000) != WAIT_FAILED);
+}
+
+static BOOL CALLBACK console_control_handler(DWORD ctrl_type)
+{
+    switch (ctrl_type)
+    {
+        case CTRL_BREAK_EVENT:
+            fprintf(stderr, "Apache server restarting...\n");
+            ap_signal_parent(SIGNAL_PARENT_RESTART);
+            return TRUE;
+        case CTRL_C_EVENT:
+            fprintf(stderr, "Apache server interrupted...\n");
+            /* for Interrupt signals, shut down the server.
+             * Tell the system we have dealt with the signal
+             * without waiting for Apache to terminate.
+             */
+            ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+            return TRUE;
+
+        case CTRL_CLOSE_EVENT:
+        case CTRL_LOGOFF_EVENT:
+        case CTRL_SHUTDOWN_EVENT:
+            /* for Terminate signals, shut down the server.
+             * Wait for Apache to terminate, but respond
+             * after a reasonable time to tell the system
+             * that we did attempt to shut ourself down.
+             */
+            fprintf(stderr, "Apache server shutdown initiated...\n");
+            ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+            Sleep(30000);
+            return TRUE;
+    }
+
+    /* We should never get here, but this is (mostly) harmless */
+    return FALSE;
+}
+
+
+static void stop_console_handler(void)
+{
+    SetConsoleCtrlHandler(console_control_handler, FALSE);
+}
+
+
+void mpm_start_console_handler(void)
+{
+    SetConsoleCtrlHandler(console_control_handler, TRUE);
+    atexit(stop_console_handler);
+}
+
+
+void mpm_start_child_console_handler(void)
+{
+    FreeConsole();
+}
+
+
+/**********************************
+  WinNT service control management
+ **********************************/
+
+static int ReportStatusToSCMgr(int currentState, int waitHint,
+                               nt_service_ctx_t *ctx)
+{
+    int rv = APR_SUCCESS;
+
+    if (ctx->hServiceStatus)
+    {
+        if (currentState == SERVICE_RUNNING) {
+            ctx->ssStatus.dwWaitHint = 0;
+            ctx->ssStatus.dwCheckPoint = 0;
+            ctx->ssStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP
+                                             | SERVICE_ACCEPT_SHUTDOWN;
+        }
+        else if (currentState == SERVICE_STOPPED) {
+            ctx->ssStatus.dwWaitHint = 0;
+            ctx->ssStatus.dwCheckPoint = 0;
+            /* An unexpected exit?  Better to error! */
+            if (ctx->ssStatus.dwCurrentState != SERVICE_STOP_PENDING
+                    && !ctx->ssStatus.dwServiceSpecificExitCode)
+                ctx->ssStatus.dwServiceSpecificExitCode = 1;
+            if (ctx->ssStatus.dwServiceSpecificExitCode)
+                ctx->ssStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
+        }
+        else {
+            ++ctx->ssStatus.dwCheckPoint;
+            ctx->ssStatus.dwControlsAccepted = 0;
+            if(waitHint)
+                ctx->ssStatus.dwWaitHint = waitHint;
+        }
+
+        ctx->ssStatus.dwCurrentState = currentState;
+
+        rv = SetServiceStatus(ctx->hServiceStatus, &ctx->ssStatus);
+    }
+    return(rv);
+}
+
+/* Note this works on Win2000 and later due to ChangeServiceConfig2
+ * Continue to test its existence, but at least drop the feature
+ * of revising service description tags prior to Win2000.
+ */
+
+/* borrowed from mpm_winnt.c */
+extern apr_pool_t *pconf;
+
+static void set_service_description(void)
+{
+    const char *full_description;
+    SC_HANDLE schSCManager;
+
+    /* Nothing to do if we are a console
+     */
+    if (!mpm_service_name)
+        return;
+
+    /* Time to fix up the description, upon each successful restart
+     */
+    full_description = ap_get_server_description();
+
+    if ((ChangeServiceConfig2) &&
+        (schSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT)))
+    {
+        SC_HANDLE schService;
+
+#if APR_HAS_UNICODE_FS
+        IF_WIN_OS_IS_UNICODE
+        {
+            schService = OpenServiceW(schSCManager,
+                                      (LPCWSTR)mpm_service_name_w,
+                                      SERVICE_CHANGE_CONFIG);
+        }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+        ELSE_WIN_OS_IS_ANSI
+        {
+            schService = OpenService(schSCManager, mpm_service_name,
+                                     SERVICE_CHANGE_CONFIG);
+        }
+#endif
+        if (schService) {
+            /* Cast is necessary, ChangeServiceConfig2 handles multiple
+             * object types, some volatile, some not.
+             */
+#if APR_HAS_UNICODE_FS
+            IF_WIN_OS_IS_UNICODE
+            {
+                apr_size_t slen = strlen(full_description) + 1;
+                apr_size_t wslen = slen;
+                apr_wchar_t *full_description_w = 
+                    (apr_wchar_t*)apr_palloc(pconf, 
+                                             wslen * sizeof(apr_wchar_t));
+                apr_status_t rv = apr_conv_utf8_to_ucs2(full_description, &slen,
+                                                        full_description_w,
+                                                        &wslen);
+                if ((rv != APR_SUCCESS) || slen
+                        || ChangeServiceConfig2W(schService, 1
+                                                 /*SERVICE_CONFIG_DESCRIPTION*/,
+                                                 (LPVOID) &full_description_w))
+                    full_description = NULL;
+            }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+            ELSE_WIN_OS_IS_ANSI
+            {
+                if (ChangeServiceConfig2(schService,
+                                         1 /* SERVICE_CONFIG_DESCRIPTION */,
+                                         (LPVOID) &full_description))
+                    full_description = NULL;
+            }
+#endif
+            CloseServiceHandle(schService);
+        }
+        CloseServiceHandle(schSCManager);
+    }
+}
+
+/* handle the SCM's ControlService() callbacks to our service */
+
+static DWORD WINAPI service_nt_ctrl(DWORD dwCtrlCode, DWORD dwEventType,
+                                    LPVOID lpEventData, LPVOID lpContext)
+{
+    nt_service_ctx_t *ctx = lpContext;
+
+    /* SHUTDOWN is offered before STOP, accept the first opportunity */
+    if ((dwCtrlCode == SERVICE_CONTROL_STOP)
+         || (dwCtrlCode == SERVICE_CONTROL_SHUTDOWN))
+    {
+        ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+        ReportStatusToSCMgr(SERVICE_STOP_PENDING, 30000, ctx);
+        return (NO_ERROR);
+    }
+    if (dwCtrlCode == SERVICE_APACHE_RESTART)
+    {
+        ap_signal_parent(SIGNAL_PARENT_RESTART);
+        ReportStatusToSCMgr(SERVICE_START_PENDING, 30000, ctx);
+        return (NO_ERROR);
+    }
+    if (dwCtrlCode == SERVICE_CONTROL_INTERROGATE) {
+        ReportStatusToSCMgr(globdat.ssStatus.dwCurrentState, 0, ctx);
+        return (NO_ERROR);
+    }
+
+    return (ERROR_CALL_NOT_IMPLEMENTED);
+}
+
+
+/* service_nt_main_fn is outside of the call stack and outside of the
+ * primary server thread... so now we _really_ need a placeholder!
+ * The winnt_rewrite_args has created and shared mpm_new_argv with us.
+ */
+extern apr_array_header_t *mpm_new_argv;
+
+#if APR_HAS_UNICODE_FS
+static void __stdcall service_nt_main_fn_w(DWORD argc, LPWSTR *argv)
+{
+    const char *ignored;
+    nt_service_ctx_t *ctx = &globdat;
+    char *service_name;
+    apr_size_t wslen = wcslen(argv[0]) + 1;
+    apr_size_t slen = wslen * 3 - 2;
+
+    service_name = malloc(slen);
+    (void)apr_conv_ucs2_to_utf8(argv[0], &wslen, service_name, &slen);
+
+    /* args and service names live in the same pool */
+    mpm_service_set_name(mpm_new_argv->pool, &ignored, service_name);
+
+    memset(&ctx->ssStatus, 0, sizeof(ctx->ssStatus));
+    ctx->ssStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
+    ctx->ssStatus.dwCurrentState = SERVICE_START_PENDING;
+    ctx->ssStatus.dwCheckPoint = 1;
+    if (!(ctx->hServiceStatus = 
+              RegisterServiceCtrlHandlerExW(argv[0], service_nt_ctrl, ctx)))
+    {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, 
+                     apr_get_os_error(), NULL, 
+                     APLOGNO(00365) "Failure registering service handler");
+        return;
+    }
+
+    /* Report status, no errors, and buy 3 more seconds */
+    ReportStatusToSCMgr(SERVICE_START_PENDING, 30000, ctx);
+
+    /* We need to append all the command arguments passed via StartService()
+     * to our running service... which just got here via the SCM...
+     * but we have no interest in argv[0] for the mpm_new_argv list.
+     */
+    if (argc > 1)
+    {
+        char **cmb_data, **cmb;
+        DWORD i;
+
+        mpm_new_argv->nalloc = mpm_new_argv->nelts + argc - 1;
+        cmb_data = malloc(mpm_new_argv->nalloc * sizeof(const char *));
+
+        /* mpm_new_argv remains first (of lower significance) */
+        memcpy (cmb_data, mpm_new_argv->elts,
+                mpm_new_argv->elt_size * mpm_new_argv->nelts);
+
+        /* Service args follow from StartService() invocation */
+        memcpy (cmb_data + mpm_new_argv->nelts, argv + 1,
+                mpm_new_argv->elt_size * (argc - 1));
+
+        cmb = cmb_data + mpm_new_argv->nelts;
+
+        for (i = 1; i < argc; ++i)
+        {
+            wslen = wcslen(argv[i]) + 1;
+            slen = wslen * 3 - 2;
+            service_name = malloc(slen);
+            (void)apr_conv_ucs2_to_utf8(argv[i], &wslen, *(cmb++), &slen);
+        }
+
+        /* The replacement arg list is complete */
+        mpm_new_argv->elts = (char *)cmb_data;
+        mpm_new_argv->nelts = mpm_new_argv->nalloc;
+    }
+
+    /* Let the main thread continue now... but hang on to the
+     * signal_monitor event so we can take further action
+     */
+    SetEvent(ctx->service_init);
+
+    WaitForSingleObject(ctx->service_term, INFINITE);
+}
+#endif /* APR_HAS_UNICODE_FS */
+
+
+#if APR_HAS_ANSI_FS
+static void __stdcall service_nt_main_fn(DWORD argc, LPSTR *argv)
+{
+    const char *ignored;
+    nt_service_ctx_t *ctx = &globdat;
+
+    /* args and service names live in the same pool */
+    mpm_service_set_name(mpm_new_argv->pool, &ignored, argv[0]);
+
+    memset(&ctx->ssStatus, 0, sizeof(ctx->ssStatus));
+    ctx->ssStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
+    ctx->ssStatus.dwCurrentState = SERVICE_START_PENDING;
+    ctx->ssStatus.dwCheckPoint = 1;
+
+    if (!(ctx->hServiceStatus = 
+              RegisterServiceCtrlHandlerExA(argv[0], service_nt_ctrl, ctx)))
+        {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, 
+                     apr_get_os_error(), NULL, 
+                     APLOGNO(10008) "Failure registering service handler");
+        return;
+    }
+
+    /* Report status, no errors, and buy 3 more seconds */
+    ReportStatusToSCMgr(SERVICE_START_PENDING, 30000, ctx);
+
+    /* We need to append all the command arguments passed via StartService()
+     * to our running service... which just got here via the SCM...
+     * but we have no interest in argv[0] for the mpm_new_argv list.
+     */
+    if (argc > 1)
+    {
+        char **cmb_data;
+
+        mpm_new_argv->nalloc = mpm_new_argv->nelts + argc - 1;
+        cmb_data = malloc(mpm_new_argv->nalloc * sizeof(const char *));
+
+        /* mpm_new_argv remains first (of lower significance) */
+        memcpy (cmb_data, mpm_new_argv->elts,
+                mpm_new_argv->elt_size * mpm_new_argv->nelts);
+
+        /* Service args follow from StartService() invocation */
+        memcpy (cmb_data + mpm_new_argv->nelts, argv + 1,
+                mpm_new_argv->elt_size * (argc - 1));
+
+        /* The replacement arg list is complete */
+        mpm_new_argv->elts = (char *)cmb_data;
+        mpm_new_argv->nelts = mpm_new_argv->nalloc;
+    }
+
+    /* Let the main thread continue now... but hang on to the
+     * signal_monitor event so we can take further action
+     */
+    SetEvent(ctx->service_init);
+
+    WaitForSingleObject(ctx->service_term, INFINITE);
+}
+#endif
+
+
+ static DWORD WINAPI service_nt_dispatch_thread(LPVOID nada)
+ {
+#if APR_HAS_UNICODE_FS
+    SERVICE_TABLE_ENTRYW dispatchTable_w[] =
+    {
+        { L"", service_nt_main_fn_w },
+        { NULL, NULL }
+    };
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+    SERVICE_TABLE_ENTRYA dispatchTable[] =
+    {
+        { "", service_nt_main_fn },
+        { NULL, NULL }
+    };
+#endif
+    apr_status_t rv;
+ 
+#if APR_HAS_UNICODE_FS
+    IF_WIN_OS_IS_UNICODE
+        rv = StartServiceCtrlDispatcherW(dispatchTable_w);
+#endif
+#if APR_HAS_ANSI_FS
+    ELSE_WIN_OS_IS_ANSI
+         rv = StartServiceCtrlDispatcherA(dispatchTable);
+#endif
+    if (rv) {
+        rv = APR_SUCCESS;
+    }
+    else {
+        /* This is a genuine failure of the SCM. */
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(00366) "Error starting Windows service control "
+                     "dispatcher");
+    }
+    return (rv);
+}
+
+
+/* The service configuration's is stored under the following trees:
+ *
+ * HKLM\System\CurrentControlSet\Services\[service name]
+ *
+ *     \DisplayName
+ *     \ImagePath
+ *     \Parameters\ConfigArgs
+ */
+
+
+apr_status_t mpm_service_set_name(apr_pool_t *p, const char **display_name,
+                                  const char *set_name)
+{
+    char key_name[MAX_PATH];
+    ap_regkey_t *key;
+    apr_status_t rv;
+
+    /* ### Needs improvement, on Win2K the user can _easily_
+     * change the display name to a string that doesn't reflect
+     * the internal service name + whitespace!
+     */
+    mpm_service_name = apr_palloc(p, strlen(set_name) + 1);
+    apr_collapse_spaces((char*) mpm_service_name, set_name);
+#if APR_HAS_UNICODE_FS
+    IF_WIN_OS_IS_UNICODE
+    {
+        apr_size_t slen = strlen(mpm_service_name) + 1;
+        apr_size_t wslen = slen;
+        mpm_service_name_w = apr_palloc(p, wslen * sizeof(apr_wchar_t));
+        rv = apr_conv_utf8_to_ucs2(mpm_service_name, &slen,
+                                   mpm_service_name_w, &wslen);
+        if (rv != APR_SUCCESS)
+            return rv;
+        else if (slen)
+            return APR_ENAMETOOLONG;
+    }
+#endif /* APR_HAS_UNICODE_FS */
+
+    apr_snprintf(key_name, sizeof(key_name), SERVICECONFIG, mpm_service_name);
+    rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, key_name,
+                        APR_READ, pconf);
+    if (rv == APR_SUCCESS) {
+        rv = ap_regkey_value_get(&mpm_display_name, key, "DisplayName", pconf);
+        ap_regkey_close(key);
+    }
+    if (rv != APR_SUCCESS) {
+        /* Take the given literal name if there is no service entry */
+        mpm_display_name = apr_pstrdup(p, set_name);
+    }
+    *display_name = mpm_display_name;
+
+    return rv;
+}
+
+
+apr_status_t mpm_merge_service_args(apr_pool_t *p,
+                                   apr_array_header_t *args,
+                                   int fixed_args)
+{
+    apr_array_header_t *svc_args = NULL;
+    char conf_key[MAX_PATH];
+    char **cmb_data;
+    apr_status_t rv;
+    ap_regkey_t *key;
+
+    apr_snprintf(conf_key, sizeof(conf_key), SERVICEPARAMS, mpm_service_name);
+    rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, conf_key, APR_READ, p);
+    if (rv == APR_SUCCESS) {
+        rv = ap_regkey_value_array_get(&svc_args, key, "ConfigArgs", p);
+        ap_regkey_close(key);
+    }
+    if (rv != APR_SUCCESS) {
+        if (rv == ERROR_FILE_NOT_FOUND) {
+            ap_log_error(APLOG_MARK, APLOG_INFO, 0, NULL, APLOGNO(00367)
+                         "No ConfigArgs registered for the '%s' service, "
+                         "perhaps this service is not installed?",
+                         mpm_service_name);
+            return APR_SUCCESS;
+        }
+        else
+            return (rv);
+    }
+
+    if (!svc_args || svc_args->nelts == 0) {
+        return (APR_SUCCESS);
+    }
+
+    /* Now we have the mpm_service_name arg, and the mpm_runservice_nt()
+     * call appended the arguments passed by StartService(), so it's
+     * time to _prepend_ the default arguments for the server from
+     * the service's default arguments (all others override them)...
+     */
+    args->nalloc = args->nelts + svc_args->nelts;
+    cmb_data = malloc(args->nalloc * sizeof(const char *));
+
+    /* First three args (argv[0], -f, path) remain first */
+    memcpy(cmb_data, args->elts, args->elt_size * fixed_args);
+
+    /* Service args follow from service registry array */
+    memcpy(cmb_data + fixed_args, svc_args->elts,
+           svc_args->elt_size * svc_args->nelts);
+
+    /* Remaining new args follow  */
+    memcpy(cmb_data + fixed_args + svc_args->nelts,
+           (const char **)args->elts + fixed_args,
+           args->elt_size * (args->nelts - fixed_args));
+
+    args->elts = (char *)cmb_data;
+    args->nelts = args->nalloc;
+
+    return APR_SUCCESS;
+}
+
+
+static void service_stopped(void)
+{
+    /* Still have a thread & window to clean up, so signal now */
+    if (globdat.service_thread)
+    {
+        /* Stop logging to the event log */
+        mpm_nt_eventlog_stderr_flush();
+
+        /* Cause the service_nt_main_fn to complete */
+        ReleaseMutex(globdat.service_term);
+
+        ReportStatusToSCMgr(SERVICE_STOPPED, 0, &globdat);
+
+        WaitForSingleObject(globdat.service_thread, 5000);
+        CloseHandle(globdat.service_thread);
+    }
+}
+
+
+apr_status_t mpm_service_to_start(const char **display_name, apr_pool_t *p)
+{
+    HANDLE hProc = GetCurrentProcess();
+    HANDLE hThread = GetCurrentThread();
+    HANDLE waitfor[2];
+
+    /* Prevent holding open the (hidden) console */
+    ap_real_exit_code = 0;
+
+     /* GetCurrentThread returns a psuedo-handle, we need
+      * a real handle for another thread to wait upon.
+      */
+    if (!DuplicateHandle(hProc, hThread, hProc, &(globdat.mpm_thread),
+                         0, FALSE, DUPLICATE_SAME_ACCESS)) {
+        return APR_ENOTHREAD;
+    }
+
+    globdat.service_init = CreateEvent(NULL, FALSE, FALSE, NULL);
+    globdat.service_term = CreateMutex(NULL, TRUE, NULL);
+    if (!globdat.service_init || !globdat.service_term) {
+         return APR_EGENERAL;
+    }
+
+    globdat.service_thread = CreateThread(NULL, 65536,
+                                          service_nt_dispatch_thread,
+                                          NULL, stack_res_flag,
+                                          &globdat.service_thread_id);
+
+    if (!globdat.service_thread) {
+        return APR_ENOTHREAD;
+    }
+
+    waitfor[0] = globdat.service_init;
+    waitfor[1] = globdat.service_thread;
+
+    /* Wait for controlling thread init or termination */
+    if (WaitForMultipleObjects(2, waitfor, FALSE, 10000) != WAIT_OBJECT_0) {
+        return APR_ENOTHREAD;
+    }
+
+    atexit(service_stopped);
+    *display_name = mpm_display_name;
+    return APR_SUCCESS;
+}
+
+
+apr_status_t mpm_service_started(void)
+{
+    set_service_description();
+    ReportStatusToSCMgr(SERVICE_RUNNING, 0, &globdat);
+    return APR_SUCCESS;
+}
+
+
+void mpm_service_stopping(void)
+{
+    ReportStatusToSCMgr(SERVICE_STOP_PENDING, 30000, &globdat);
+}
+
+
+apr_status_t mpm_service_install(apr_pool_t *ptemp, int argc,
+                                 const char * const * argv, int reconfig)
+{
+    char key_name[MAX_PATH];
+    char *launch_cmd;
+    ap_regkey_t *key;
+    apr_status_t rv;
+    SC_HANDLE   schService;
+    SC_HANDLE   schSCManager;
+    DWORD       rc;
+#if APR_HAS_UNICODE_FS
+    apr_wchar_t *display_name_w;
+    apr_wchar_t *launch_cmd_w;
+#endif
+
+    fprintf(stderr, reconfig ? "Reconfiguring the '%s' service\n"
+                             : "Installing the '%s' service\n",
+                    mpm_display_name);
+
+#if APR_HAS_UNICODE_FS
+    IF_WIN_OS_IS_UNICODE
+    {
+        apr_size_t slen = strlen(mpm_display_name) + 1;
+        apr_size_t wslen = slen;
+        display_name_w = apr_palloc(ptemp, wslen * sizeof(apr_wchar_t));
+        rv = apr_conv_utf8_to_ucs2(mpm_display_name, &slen,
+                                   display_name_w, &wslen);
+        if (rv != APR_SUCCESS)
+            return rv;
+        else if (slen)
+            return APR_ENAMETOOLONG;
+
+        launch_cmd_w = apr_palloc(ptemp, (MAX_PATH + 17) * sizeof(apr_wchar_t));
+        launch_cmd_w[0] = L'"';
+        rc = GetModuleFileNameW(NULL, launch_cmd_w + 1, MAX_PATH);
+        wcscpy(launch_cmd_w + rc + 1, L"\" -k runservice");
+    }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+    ELSE_WIN_OS_IS_ANSI
+    {
+        launch_cmd = apr_palloc(ptemp, MAX_PATH + 17);
+        launch_cmd[0] = '"';
+        rc = GetModuleFileName(NULL, launch_cmd + 1, MAX_PATH);
+        strcpy(launch_cmd + rc + 1, "\" -k runservice");
+    }
+#endif
+    if (rc == 0) {
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(00368) "GetModuleFileName failed");
+        return rv;
+    }
+
+    schSCManager = OpenSCManager(NULL, NULL, /* local, default database */
+                                 SC_MANAGER_CREATE_SERVICE);
+    if (!schSCManager) {
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(00369)  "Failed to open the Windows service "
+                     "manager, perhaps you forgot to log in as Administrator?");
+        return (rv);
+    }
+
+    if (reconfig) {
+#if APR_HAS_UNICODE_FS
+        IF_WIN_OS_IS_UNICODE
+        {
+            schService = OpenServiceW(schSCManager, mpm_service_name_w,
+                                      SERVICE_CHANGE_CONFIG);
+        }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+        ELSE_WIN_OS_IS_ANSI
+        {
+            schService = OpenService(schSCManager, mpm_service_name,
+                                     SERVICE_CHANGE_CONFIG);
+        }
+#endif
+        if (!schService) {
+            rv = apr_get_os_error();
+            CloseServiceHandle(schSCManager);
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         APLOGNO(00373) "Failed to open the '%s' service",
+                         mpm_display_name);
+            return (rv);
+        }
+
+#if APR_HAS_UNICODE_FS
+        IF_WIN_OS_IS_UNICODE
+        {
+            rc = ChangeServiceConfigW(schService,
+                                      SERVICE_WIN32_OWN_PROCESS,
+                                      SERVICE_AUTO_START,
+                                      SERVICE_ERROR_NORMAL,
+                                      launch_cmd_w, NULL, NULL,
+                                      L"Tcpip\0Afd\0", NULL, NULL,
+                                      display_name_w);
+        }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+        ELSE_WIN_OS_IS_ANSI
+        {
+            rc = ChangeServiceConfig(schService,
+                                     SERVICE_WIN32_OWN_PROCESS,
+                                     SERVICE_AUTO_START,
+                                     SERVICE_ERROR_NORMAL,
+                                     launch_cmd, NULL, NULL,
+                                     "Tcpip\0Afd\0", NULL, NULL,
+                                     mpm_display_name);
+        }
+#endif
+        if (!rc) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP,
+                         apr_get_os_error(), NULL,
+                         APLOGNO(02652) "ChangeServiceConfig failed");
+
+            /* !schService aborts configuration below */
+            CloseServiceHandle(schService);
+            schService = NULL;
+        }
+    }
+    else {
+        /* RPCSS is the Remote Procedure Call (RPC) Locator required
+         * for DCOM communication pipes.  I am far from convinced we
+         * should add this to the default service dependencies, but
+         * be warned that future apache modules or ISAPI dll's may
+         * depend on it.
+         */
+#if APR_HAS_UNICODE_FS
+        IF_WIN_OS_IS_UNICODE
+        {
+            schService = CreateServiceW(schSCManager,    // SCManager database
+                                 mpm_service_name_w,   // name of service
+                                 display_name_w,   // name to display
+                                 SERVICE_ALL_ACCESS,   // access required
+                                 SERVICE_WIN32_OWN_PROCESS,  // service type
+                                 SERVICE_AUTO_START,   // start type
+                                 SERVICE_ERROR_NORMAL, // error control type
+                                 launch_cmd_w,         // service's binary
+                                 NULL,                 // no load svc group
+                                 NULL,                 // no tag identifier
+                                 L"Tcpip\0Afd\0",      // dependencies
+                                 NULL,                 // use SYSTEM account
+                                 NULL);                // no password
+        }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+        ELSE_WIN_OS_IS_ANSI
+        {
+            schService = CreateService(schSCManager,     // SCManager database
+                                 mpm_service_name,     // name of service
+                                 mpm_display_name,     // name to display
+                                 SERVICE_ALL_ACCESS,   // access required
+                                 SERVICE_WIN32_OWN_PROCESS,  // service type
+                                 SERVICE_AUTO_START,   // start type
+                                 SERVICE_ERROR_NORMAL, // error control type
+                                 launch_cmd,           // service's binary
+                                 NULL,                 // no load svc group
+                                 NULL,                 // no tag identifier
+                                 "Tcpip\0Afd\0",       // dependencies
+                                 NULL,                 // use SYSTEM account
+                                 NULL);                // no password
+        }
+#endif
+        if (!schService)
+        {
+            rv = apr_get_os_error();
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         APLOGNO(00370) "Failed to create the '%s' service",
+                         mpm_display_name);
+            CloseServiceHandle(schSCManager);
+            return (rv);
+        }
+    }
+
+    CloseServiceHandle(schService);
+    CloseServiceHandle(schSCManager);
+
+    set_service_description();
+
+    /* Store the service ConfigArgs in the registry...
+     */
+    apr_snprintf(key_name, sizeof(key_name), SERVICEPARAMS, mpm_service_name);
+    rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, key_name,
+                        APR_READ | APR_WRITE | APR_CREATE, pconf);
+    if (rv == APR_SUCCESS) {
+        rv = ap_regkey_value_array_set(key, "ConfigArgs", argc, argv, pconf);
+        ap_regkey_close(key);
+    }
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(00371) "Failed to store ConfigArgs for the "
+                     "'%s' service in the registry.", mpm_display_name);
+        return (rv);
+    }
+    fprintf(stderr, "The '%s' service is successfully installed.\n",
+                    mpm_display_name);
+    return APR_SUCCESS;
+}
+
+
+apr_status_t mpm_service_uninstall(void)
+{
+    apr_status_t rv;
+    SC_HANDLE schService;
+    SC_HANDLE schSCManager;
+
+    fprintf(stderr, "Removing the '%s' service\n", mpm_display_name);
+
+    schSCManager = OpenSCManager(NULL, NULL, /* local, default database */
+                                 SC_MANAGER_CONNECT);
+    if (!schSCManager) {
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(10009)  "Failed to open the Windows service "
+                     "manager, perhaps you forgot to log in as Administrator?");
+        return (rv);
+    }
+
+#if APR_HAS_UNICODE_FS
+    IF_WIN_OS_IS_UNICODE
+    {
+        schService = OpenServiceW(schSCManager, mpm_service_name_w, DELETE);
+    }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+    ELSE_WIN_OS_IS_ANSI
+    {
+        schService = OpenService(schSCManager, mpm_service_name, DELETE);
+    }
+#endif
+    if (!schService) {
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(10010) "Failed to open the '%s' service",
+                     mpm_display_name);
+        return (rv);
+    }
+
+    /* assure the service is stopped before continuing
+     *
+     * This may be out of order... we might not be able to be
+     * granted all access if the service is running anyway.
+     *
+     * And do we want to make it *this easy* for them
+     * to uninstall their service unintentionally?
+     */
+    /* ap_stop_service(schService);
+     */
+
+    if (DeleteService(schService) == 0) {
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(00374) "Failed to delete the '%s' service",
+                     mpm_display_name);
+        return (rv);
+    }
+
+    CloseServiceHandle(schService);
+    CloseServiceHandle(schSCManager);
+
+    fprintf(stderr, "The '%s' service has been removed successfully.\n",
+                    mpm_display_name);
+    return APR_SUCCESS;
+}
+
+
+/* signal_service_transition is a simple thunk to signal the service
+ * and monitor its successful transition.  If the signal passed is 0,
+ * then the caller is assumed to already have performed some service
+ * operation to be monitored (such as StartService), and no actual
+ * ControlService signal is sent.
+ */
+
+static int signal_service_transition(SC_HANDLE schService, DWORD signal,
+                                     DWORD pending, DWORD complete)
+{
+    if (signal && !ControlService(schService, signal, &globdat.ssStatus))
+        return FALSE;
+
+    do {
+        Sleep(1000);
+        if (!QueryServiceStatus(schService, &globdat.ssStatus))
+            return FALSE;
+    } while (globdat.ssStatus.dwCurrentState == pending);
+
+    return (globdat.ssStatus.dwCurrentState == complete);
+}
+
+
+apr_status_t mpm_service_start(apr_pool_t *ptemp, int argc,
+                               const char * const * argv)
+{
+    apr_status_t rv;
+    SC_HANDLE   schService;
+    SC_HANDLE   schSCManager;
+
+    fprintf(stderr, "Starting the '%s' service\n", mpm_display_name);
+
+    schSCManager = OpenSCManager(NULL, NULL, /* local, default database */
+                                 SC_MANAGER_CONNECT);
+    if (!schSCManager) {
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     APLOGNO(10011)  "Failed to open the Windows service "
+                     "manager, perhaps you forgot to log in as Administrator?");
+        return (rv);
+    }
+
+#if APR_HAS_UNICODE_FS
+    IF_WIN_OS_IS_UNICODE
+    {
+        schService = OpenServiceW(schSCManager, mpm_service_name_w,
+                                  SERVICE_START | SERVICE_QUERY_STATUS);
+    }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+    ELSE_WIN_OS_IS_ANSI
+    {
+        schService = OpenService(schSCManager, mpm_service_name,
+                                 SERVICE_START | SERVICE_QUERY_STATUS);
+    }
+#endif
+    if (!schService) {
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL, 
+                     APLOGNO(10012) "Failed to open the '%s' service",
+                     mpm_display_name);
+        CloseServiceHandle(schSCManager);
+        return (rv);
+    }
+
+    if (QueryServiceStatus(schService, &globdat.ssStatus)
+        && (globdat.ssStatus.dwCurrentState == SERVICE_RUNNING)) {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, 0, NULL,
+                     APLOGNO(00377) "The '%s' service is already started!",
+                     mpm_display_name);
+        CloseServiceHandle(schService);
+        CloseServiceHandle(schSCManager);
+        return 0;
+    }
+
+    rv = APR_EINIT;
+#if APR_HAS_UNICODE_FS
+    IF_WIN_OS_IS_UNICODE
+    {
+        LPWSTR *start_argv_w = malloc((argc + 1) * sizeof(LPCWSTR));
+        int i;
+
+        for (i = 0; i < argc; ++i)
+        {
+            apr_size_t slen = strlen(argv[i]) + 1;
+            apr_size_t wslen = slen;
+            start_argv_w[i] = malloc(wslen * sizeof(WCHAR));
+            rv = apr_conv_utf8_to_ucs2(argv[i], &slen, start_argv_w[i], &wslen);
+            if (rv != APR_SUCCESS)
+                return rv;
+            else if (slen)
+                return APR_ENAMETOOLONG;
+        }
+        start_argv_w[argc] = NULL;
+
+        if (StartServiceW(schService, argc, start_argv_w)
+            && signal_service_transition(schService, 0, /* test only */
+                                         SERVICE_START_PENDING,
+                                         SERVICE_RUNNING))
+                rv = APR_SUCCESS;
+    }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+    ELSE_WIN_OS_IS_ANSI
+    {
+        char **start_argv = malloc((argc + 1) * sizeof(const char *));
+        memcpy(start_argv, argv, argc * sizeof(const char *));
+        start_argv[argc] = NULL;
+
+        if (StartService(schService, argc, start_argv)
+            && signal_service_transition(schService, 0, /* test only */
+                                         SERVICE_START_PENDING,
+                                         SERVICE_RUNNING))
+                rv = APR_SUCCESS;
+    }
+#endif
+    if (rv != APR_SUCCESS)
+        rv = apr_get_os_error();
+
+    CloseServiceHandle(schService);
+    CloseServiceHandle(schSCManager);
+
+    if (rv == APR_SUCCESS)
+        fprintf(stderr, "The '%s' service is running.\n", mpm_display_name);
+    else
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL, APLOGNO(00378)
+                     "Failed to start the '%s' service",
+                     mpm_display_name);
+
+    return rv;
+}
+
+
+/* signal is zero to stop, non-zero for restart */
+
+void mpm_signal_service(apr_pool_t *ptemp, int signal)
+{
+    int success = FALSE;
+    SC_HANDLE   schService;
+    SC_HANDLE   schSCManager;
+
+    schSCManager = OpenSCManager(NULL, NULL, /* default machine & database */
+                                 SC_MANAGER_CONNECT);
+
+    if (!schSCManager) {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP,
+                     apr_get_os_error(), NULL,
+                     APLOGNO(10013)  "Failed to open the Windows service "
+                     "manager, perhaps you forgot to log in as Administrator?");
+        return;
+    }
+
+#if APR_HAS_UNICODE_FS
+    IF_WIN_OS_IS_UNICODE
+    {
+        schService = OpenServiceW(schSCManager, mpm_service_name_w,
+                                  SERVICE_INTERROGATE | SERVICE_QUERY_STATUS |
+                                  SERVICE_USER_DEFINED_CONTROL |
+                                  SERVICE_START | SERVICE_STOP);
+    }
+#endif /* APR_HAS_UNICODE_FS */
+#if APR_HAS_ANSI_FS
+    ELSE_WIN_OS_IS_ANSI
+    {
+        schService = OpenService(schSCManager, mpm_service_name,
+                                 SERVICE_INTERROGATE | SERVICE_QUERY_STATUS |
+                                 SERVICE_USER_DEFINED_CONTROL |
+                                 SERVICE_START | SERVICE_STOP);
+    }
+#endif
+    if (schService == NULL) {
+        /* Could not open the service */
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP,
+                     apr_get_os_error(), NULL,
+                     APLOGNO(10014) "Failed to open the '%s' service",
+                     mpm_display_name);
+        CloseServiceHandle(schSCManager);
+        return;
+    }
+
+    if (!QueryServiceStatus(schService, &globdat.ssStatus)) {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP,
+                     apr_get_os_error(), NULL,
+                     APLOGNO(00381) "Query of the '%s' service failed",
+                     mpm_display_name);
+        CloseServiceHandle(schService);
+        CloseServiceHandle(schSCManager);
+        return;
+    }
+
+    if (!signal && (globdat.ssStatus.dwCurrentState == SERVICE_STOPPED)) {
+        fprintf(stderr, "The '%s' service is not started.\n", mpm_display_name);
+        CloseServiceHandle(schService);
+        CloseServiceHandle(schSCManager);
+        return;
+    }
+
+    fprintf(stderr, signal ? "The '%s' service is restarting.\n"
+                           : "The '%s' service is stopping.\n",
+                    mpm_display_name);
+
+    if (!signal)
+        success = signal_service_transition(schService,
+                                            SERVICE_CONTROL_STOP,
+                                            SERVICE_STOP_PENDING,
+                                            SERVICE_STOPPED);
+    else if (globdat.ssStatus.dwCurrentState == SERVICE_STOPPED) {
+        mpm_service_start(ptemp, 0, NULL);
+        CloseServiceHandle(schService);
+        CloseServiceHandle(schSCManager);
+        return;
+    }
+    else
+        success = signal_service_transition(schService,
+                                            SERVICE_APACHE_RESTART,
+                                            SERVICE_START_PENDING,
+                                            SERVICE_RUNNING);
+
+    CloseServiceHandle(schService);
+    CloseServiceHandle(schSCManager);
+
+    if (success)
+        fprintf(stderr, signal ? "The '%s' service has restarted.\n"
+                               : "The '%s' service has stopped.\n",
+                        mpm_display_name);
+    else
+        fprintf(stderr, signal ? "Failed to restart the '%s' service.\n"
+                               : "Failed to stop the '%s' service.\n",
+                        mpm_display_name);
+}