summaryrefslogtreecommitdiffstats
path: root/poll
diff options
context:
space:
mode:
Diffstat (limited to 'poll')
-rw-r--r--poll/os2/poll.c105
-rw-r--r--poll/os2/pollset.c321
-rw-r--r--poll/unix/epoll.c490
-rw-r--r--poll/unix/kqueue.c505
-rw-r--r--poll/unix/poll.c460
-rw-r--r--poll/unix/pollcb.c224
-rw-r--r--poll/unix/pollset.c247
-rw-r--r--poll/unix/port.c594
-rw-r--r--poll/unix/select.c449
-rw-r--r--poll/unix/wakeup.c152
-rw-r--r--poll/unix/z_asio.c782
11 files changed, 4329 insertions, 0 deletions
diff --git a/poll/os2/poll.c b/poll/os2/poll.c
new file mode 100644
index 0000000..3c36e5e
--- /dev/null
+++ b/poll/os2/poll.c
@@ -0,0 +1,105 @@
+/* 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 "apr.h"
+#include "apr_poll.h"
+#include "apr_arch_networkio.h"
+
+APR_DECLARE(apr_status_t) apr_poll(apr_pollfd_t *aprset, apr_int32_t num,
+ apr_int32_t *nsds, apr_interval_time_t timeout)
+{
+ int *pollset;
+ int i;
+ int num_read = 0, num_write = 0, num_except = 0, num_total;
+ int pos_read, pos_write, pos_except;
+
+ for (i = 0; i < num; i++) {
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ num_read += (aprset[i].reqevents & APR_POLLIN) != 0;
+ num_write += (aprset[i].reqevents & APR_POLLOUT) != 0;
+ num_except += (aprset[i].reqevents & APR_POLLPRI) != 0;
+ }
+ }
+
+ num_total = num_read + num_write + num_except;
+ pollset = alloca(sizeof(int) * num_total);
+ memset(pollset, 0, sizeof(int) * num_total);
+
+ pos_read = 0;
+ pos_write = num_read;
+ pos_except = pos_write + num_write;
+
+ for (i = 0; i < num; i++) {
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ if (aprset[i].reqevents & APR_POLLIN) {
+ pollset[pos_read++] = aprset[i].desc.s->socketdes;
+ }
+
+ if (aprset[i].reqevents & APR_POLLOUT) {
+ pollset[pos_write++] = aprset[i].desc.s->socketdes;
+ }
+
+ if (aprset[i].reqevents & APR_POLLPRI) {
+ pollset[pos_except++] = aprset[i].desc.s->socketdes;
+ }
+
+ aprset[i].rtnevents = 0;
+ }
+ }
+
+ if (timeout > 0) {
+ timeout /= 1000; /* convert microseconds to milliseconds */
+ }
+
+ i = select(pollset, num_read, num_write, num_except, timeout);
+ (*nsds) = i;
+
+ if ((*nsds) < 0) {
+ return APR_FROM_OS_ERROR(sock_errno());
+ }
+
+ if ((*nsds) == 0) {
+ return APR_TIMEUP;
+ }
+
+ pos_read = 0;
+ pos_write = num_read;
+ pos_except = pos_write + num_write;
+
+ for (i = 0; i < num; i++) {
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ if (aprset[i].reqevents & APR_POLLIN) {
+ if (pollset[pos_read++] > 0) {
+ aprset[i].rtnevents |= APR_POLLIN;
+ }
+ }
+
+ if (aprset[i].reqevents & APR_POLLOUT) {
+ if (pollset[pos_write++] > 0) {
+ aprset[i].rtnevents |= APR_POLLOUT;
+ }
+ }
+
+ if (aprset[i].reqevents & APR_POLLPRI) {
+ if (pollset[pos_except++] > 0) {
+ aprset[i].rtnevents |= APR_POLLPRI;
+ }
+ }
+ }
+ }
+
+ return APR_SUCCESS;
+}
diff --git a/poll/os2/pollset.c b/poll/os2/pollset.c
new file mode 100644
index 0000000..87b3c18
--- /dev/null
+++ b/poll/os2/pollset.c
@@ -0,0 +1,321 @@
+/* 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 "apr.h"
+#include "apr_poll.h"
+#include "apr_arch_networkio.h"
+
+#ifndef MSG_DONTWAIT
+#define MSG_DONTWAIT 0x100
+#endif
+
+struct apr_pollset_t {
+ apr_pool_t *pool;
+ apr_uint32_t nelts;
+ apr_uint32_t nalloc;
+ int *pollset;
+ int num_read;
+ int num_write;
+ int num_except;
+ int num_total;
+ apr_pollfd_t *query_set;
+ apr_pollfd_t *result_set;
+ apr_socket_t *wake_listen;
+ apr_socket_t *wake_sender;
+ apr_sockaddr_t *wake_address;
+};
+
+
+
+APR_DECLARE(apr_status_t) apr_pollset_create(apr_pollset_t **pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ apr_status_t rc = APR_SUCCESS;
+
+ if (flags & APR_POLLSET_WAKEABLE) {
+ size++;
+ }
+
+ *pollset = apr_palloc(p, sizeof(**pollset));
+ (*pollset)->pool = p;
+ (*pollset)->nelts = 0;
+ (*pollset)->nalloc = size;
+ (*pollset)->pollset = apr_palloc(p, size * sizeof(int) * 3);
+ (*pollset)->query_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+ (*pollset)->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+ (*pollset)->num_read = -1;
+ (*pollset)->wake_listen = NULL;
+ (*pollset)->wake_sender = NULL;
+
+ if (flags & APR_POLLSET_WAKEABLE) {
+ rc = apr_socket_create(&(*pollset)->wake_listen, APR_UNIX, SOCK_DGRAM, 0, p);
+
+ if (rc == APR_SUCCESS) {
+ apr_sockaddr_t *listen_address;
+ apr_socket_timeout_set((*pollset)->wake_listen, 0);
+ apr_sockaddr_info_get(&listen_address, "", APR_UNIX, 0, 0, p);
+ rc = apr_socket_bind((*pollset)->wake_listen, listen_address);
+
+ if (rc == APR_SUCCESS) {
+ apr_pollfd_t wake_poll_fd;
+ wake_poll_fd.p = p;
+ wake_poll_fd.desc_type = APR_POLL_SOCKET;
+ wake_poll_fd.reqevents = APR_POLLIN;
+ wake_poll_fd.desc.s = (*pollset)->wake_listen;
+ wake_poll_fd.client_data = NULL;
+ apr_pollset_add(*pollset, &wake_poll_fd);
+ apr_socket_addr_get(&(*pollset)->wake_address, APR_LOCAL, (*pollset)->wake_listen);
+
+ rc = apr_socket_create(&(*pollset)->wake_sender, APR_UNIX, SOCK_DGRAM, 0, p);
+ }
+ }
+ }
+
+ return rc;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_create_ex(apr_pollset_t **pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags,
+ apr_pollset_method_e method)
+{
+ /* Only one method is supported */
+ if (flags & APR_POLLSET_NODEFAULT) {
+ if (method != APR_POLLSET_DEFAULT && method != APR_POLLSET_POLL) {
+ return APR_ENOTIMPL;
+ }
+ }
+
+ return apr_pollset_create(pollset, size, p, flags);
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_destroy(apr_pollset_t *pollset)
+{
+ /* A no-op function for now. If we later implement /dev/poll
+ * support, we'll need to close the /dev/poll fd here
+ */
+ return APR_SUCCESS;
+}
+
+
+
+APR_DECLARE(apr_status_t) apr_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ if (pollset->nelts == pollset->nalloc) {
+ return APR_ENOMEM;
+ }
+
+ pollset->query_set[pollset->nelts] = *descriptor;
+
+ if (descriptor->desc_type != APR_POLL_SOCKET) {
+ return APR_EBADF;
+ }
+
+ pollset->nelts++;
+ pollset->num_read = -1;
+ return APR_SUCCESS;
+}
+
+
+
+APR_DECLARE(apr_status_t) apr_pollset_remove(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ apr_uint32_t i;
+
+ for (i = 0; i < pollset->nelts; i++) {
+ if (descriptor->desc.s == pollset->query_set[i].desc.s) {
+ /* Found an instance of the fd: remove this and any other copies */
+ apr_uint32_t dst = i;
+ apr_uint32_t old_nelts = pollset->nelts;
+ pollset->nelts--;
+
+ for (i++; i < old_nelts; i++) {
+ if (descriptor->desc.s == pollset->query_set[i].desc.s) {
+ pollset->nelts--;
+ }
+ else {
+ pollset->pollset[dst] = pollset->pollset[i];
+ pollset->query_set[dst] = pollset->query_set[i];
+ dst++;
+ }
+ }
+
+ pollset->num_read = -1;
+ return APR_SUCCESS;
+ }
+ }
+
+ return APR_NOTFOUND;
+}
+
+
+
+static void make_pollset(apr_pollset_t *pollset)
+{
+ int i;
+ int pos = 0;
+
+ pollset->num_read = 0;
+ pollset->num_write = 0;
+ pollset->num_except = 0;
+
+ for (i = 0; i < pollset->nelts; i++) {
+ if (pollset->query_set[i].reqevents & APR_POLLIN) {
+ pollset->pollset[pos++] = pollset->query_set[i].desc.s->socketdes;
+ pollset->num_read++;
+ }
+ }
+
+ for (i = 0; i < pollset->nelts; i++) {
+ if (pollset->query_set[i].reqevents & APR_POLLOUT) {
+ pollset->pollset[pos++] = pollset->query_set[i].desc.s->socketdes;
+ pollset->num_write++;
+ }
+ }
+
+ for (i = 0; i < pollset->nelts; i++) {
+ if (pollset->query_set[i].reqevents & APR_POLLPRI) {
+ pollset->pollset[pos++] = pollset->query_set[i].desc.s->socketdes;
+ pollset->num_except++;
+ }
+ }
+
+ pollset->num_total = pollset->num_read + pollset->num_write + pollset->num_except;
+}
+
+
+
+APR_DECLARE(apr_status_t) apr_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ int rv;
+ apr_uint32_t i;
+ int *pollresult;
+ int read_pos, write_pos, except_pos;
+ apr_status_t rc = APR_SUCCESS;
+
+ if (pollset->num_read < 0) {
+ make_pollset(pollset);
+ }
+
+ pollresult = alloca(sizeof(int) * pollset->num_total);
+ memcpy(pollresult, pollset->pollset, sizeof(int) * pollset->num_total);
+ (*num) = 0;
+
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+
+ rv = select(pollresult, pollset->num_read, pollset->num_write, pollset->num_except, timeout);
+
+ if (rv < 0) {
+ return APR_FROM_OS_ERROR(sock_errno());
+ }
+
+ if (rv == 0) {
+ return APR_TIMEUP;
+ }
+
+ read_pos = 0;
+ write_pos = pollset->num_read;
+ except_pos = pollset->num_read + pollset->num_write;
+
+ for (i = 0; i < pollset->nelts; i++) {
+ int rtnevents = 0;
+
+ if (pollset->query_set[i].reqevents & APR_POLLIN) {
+ if (pollresult[read_pos++] != -1) {
+ rtnevents |= APR_POLLIN;
+ }
+ }
+
+ if (pollset->query_set[i].reqevents & APR_POLLOUT) {
+ if (pollresult[write_pos++] != -1) {
+ rtnevents |= APR_POLLOUT;
+ }
+ }
+
+ if (pollset->query_set[i].reqevents & APR_POLLPRI) {
+ if (pollresult[except_pos++] != -1) {
+ rtnevents |= APR_POLLPRI;
+ }
+ }
+
+ if (rtnevents) {
+ if (i == 0 && pollset->wake_listen != NULL) {
+ struct apr_sockaddr_t from_addr;
+ char buffer[16];
+ apr_size_t buflen;
+ for (;;) {
+ buflen = sizeof(buffer);
+ rv = apr_socket_recvfrom(&from_addr, pollset->wake_listen,
+ MSG_DONTWAIT, buffer, &buflen);
+ if (rv != APR_SUCCESS) {
+ break;
+ }
+ /* Woken up, drain the pipe still. */
+ rc = APR_EINTR;
+ }
+ }
+ else {
+ pollset->result_set[*num] = pollset->query_set[i];
+ pollset->result_set[*num].rtnevents = rtnevents;
+ /* Event(s) besides wakeup pipe. */
+ rc = APR_SUCCESS;
+ (*num)++;
+ }
+ }
+ }
+
+ if (descriptors) {
+ *descriptors = pollset->result_set;
+ }
+
+ return rc;
+}
+
+
+
+APR_DECLARE(apr_status_t) apr_pollset_wakeup(apr_pollset_t *pollset)
+{
+ if (pollset->wake_sender) {
+ apr_size_t len = 1;
+ return apr_socket_sendto(pollset->wake_sender, pollset->wake_address, 0, "", &len);
+ }
+
+ return APR_EINIT;
+}
+
+
+
+APR_DECLARE(const char *) apr_poll_method_defname(void)
+{
+ return "select";
+}
+
+
+
+APR_DECLARE(const char *) apr_pollset_method_name(apr_pollset_t *pollset)
+{
+ return "select";
+}
diff --git a/poll/unix/epoll.c b/poll/unix/epoll.c
new file mode 100644
index 0000000..4ab03f6
--- /dev/null
+++ b/poll/unix/epoll.c
@@ -0,0 +1,490 @@
+/* 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 "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+#include "apr_arch_inherit.h"
+
+#if defined(HAVE_EPOLL)
+
+static apr_int16_t get_epoll_event(apr_int16_t event)
+{
+ apr_int16_t rv = 0;
+
+ if (event & APR_POLLIN)
+ rv |= EPOLLIN;
+ if (event & APR_POLLPRI)
+ rv |= EPOLLPRI;
+ if (event & APR_POLLOUT)
+ rv |= EPOLLOUT;
+ /* APR_POLLNVAL is not handled by epoll. EPOLLERR and EPOLLHUP are return-only */
+
+ return rv;
+}
+
+static apr_int16_t get_epoll_revent(apr_int16_t event)
+{
+ apr_int16_t rv = 0;
+
+ if (event & EPOLLIN)
+ rv |= APR_POLLIN;
+ if (event & EPOLLPRI)
+ rv |= APR_POLLPRI;
+ if (event & EPOLLOUT)
+ rv |= APR_POLLOUT;
+ if (event & EPOLLERR)
+ rv |= APR_POLLERR;
+ if (event & EPOLLHUP)
+ rv |= APR_POLLHUP;
+ /* APR_POLLNVAL is not handled by epoll. */
+
+ return rv;
+}
+
+struct apr_pollset_private_t
+{
+ int epoll_fd;
+ struct epoll_event *pollset;
+ apr_pollfd_t *result_set;
+#if APR_HAS_THREADS
+ /* A thread mutex to protect operations on the rings */
+ apr_thread_mutex_t *ring_lock;
+#endif
+ /* A ring containing all of the pollfd_t that are active */
+ APR_RING_HEAD(pfd_query_ring_t, pfd_elem_t) query_ring;
+ /* A ring of pollfd_t that have been used, and then _remove()'d */
+ APR_RING_HEAD(pfd_free_ring_t, pfd_elem_t) free_ring;
+ /* A ring of pollfd_t where rings that have been _remove()`ed but
+ might still be inside a _poll() */
+ APR_RING_HEAD(pfd_dead_ring_t, pfd_elem_t) dead_ring;
+};
+
+static apr_status_t impl_pollset_cleanup(apr_pollset_t *pollset)
+{
+ close(pollset->p->epoll_fd);
+ return APR_SUCCESS;
+}
+
+
+static apr_status_t impl_pollset_create(apr_pollset_t *pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ apr_status_t rv;
+ int fd;
+
+#ifdef HAVE_EPOLL_CREATE1
+ fd = epoll_create1(EPOLL_CLOEXEC);
+#else
+ fd = epoll_create(size);
+#endif
+ if (fd < 0) {
+ pollset->p = NULL;
+ return apr_get_netos_error();
+ }
+
+#ifndef HAVE_EPOLL_CREATE1
+ {
+ int fd_flags;
+
+ if ((fd_flags = fcntl(fd, F_GETFD)) == -1) {
+ rv = errno;
+ close(fd);
+ pollset->p = NULL;
+ return rv;
+ }
+
+ fd_flags |= FD_CLOEXEC;
+ if (fcntl(fd, F_SETFD, fd_flags) == -1) {
+ rv = errno;
+ close(fd);
+ pollset->p = NULL;
+ return rv;
+ }
+ }
+#endif
+
+ pollset->p = apr_palloc(p, sizeof(apr_pollset_private_t));
+#if APR_HAS_THREADS
+ if ((flags & APR_POLLSET_THREADSAFE) &&
+ !(flags & APR_POLLSET_NOCOPY) &&
+ ((rv = apr_thread_mutex_create(&pollset->p->ring_lock,
+ APR_THREAD_MUTEX_DEFAULT,
+ p)) != APR_SUCCESS)) {
+ close(fd);
+ pollset->p = NULL;
+ return rv;
+ }
+#else
+ if (flags & APR_POLLSET_THREADSAFE) {
+ close(fd);
+ pollset->p = NULL;
+ return APR_ENOTIMPL;
+ }
+#endif
+ pollset->p->epoll_fd = fd;
+ pollset->p->pollset = apr_palloc(p, size * sizeof(struct epoll_event));
+ pollset->p->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+
+ if (!(flags & APR_POLLSET_NOCOPY)) {
+ APR_RING_INIT(&pollset->p->query_ring, pfd_elem_t, link);
+ APR_RING_INIT(&pollset->p->free_ring, pfd_elem_t, link);
+ APR_RING_INIT(&pollset->p->dead_ring, pfd_elem_t, link);
+ }
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ struct epoll_event ev = {0};
+ int ret;
+ pfd_elem_t *elem = NULL;
+ apr_status_t rv = APR_SUCCESS;
+
+ ev.events = get_epoll_event(descriptor->reqevents);
+
+ if (pollset->flags & APR_POLLSET_NOCOPY) {
+ ev.data.ptr = (void *)descriptor;
+ }
+ else {
+ pollset_lock_rings();
+
+ if (!APR_RING_EMPTY(&(pollset->p->free_ring), pfd_elem_t, link)) {
+ elem = APR_RING_FIRST(&(pollset->p->free_ring));
+ APR_RING_REMOVE(elem, link);
+ }
+ else {
+ elem = (pfd_elem_t *) apr_palloc(pollset->pool, sizeof(pfd_elem_t));
+ APR_RING_ELEM_INIT(elem, link);
+ }
+ elem->pfd = *descriptor;
+ ev.data.ptr = elem;
+ }
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ ret = epoll_ctl(pollset->p->epoll_fd, EPOLL_CTL_ADD,
+ descriptor->desc.s->socketdes, &ev);
+ }
+ else {
+ ret = epoll_ctl(pollset->p->epoll_fd, EPOLL_CTL_ADD,
+ descriptor->desc.f->filedes, &ev);
+ }
+
+ if (0 != ret) {
+ rv = apr_get_netos_error();
+ }
+
+ if (!(pollset->flags & APR_POLLSET_NOCOPY)) {
+ if (rv != APR_SUCCESS) {
+ APR_RING_INSERT_TAIL(&(pollset->p->free_ring), elem, pfd_elem_t, link);
+ }
+ else {
+ APR_RING_INSERT_TAIL(&(pollset->p->query_ring), elem, pfd_elem_t, link);
+ }
+ pollset_unlock_rings();
+ }
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_remove(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ pfd_elem_t *ep;
+ apr_status_t rv = APR_SUCCESS;
+ struct epoll_event ev = {0}; /* ignored, but must be passed with
+ * kernel < 2.6.9
+ */
+ int ret;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ ret = epoll_ctl(pollset->p->epoll_fd, EPOLL_CTL_DEL,
+ descriptor->desc.s->socketdes, &ev);
+ }
+ else {
+ ret = epoll_ctl(pollset->p->epoll_fd, EPOLL_CTL_DEL,
+ descriptor->desc.f->filedes, &ev);
+ }
+ if (ret < 0) {
+ rv = APR_NOTFOUND;
+ }
+
+ if (!(pollset->flags & APR_POLLSET_NOCOPY)) {
+ pollset_lock_rings();
+
+ for (ep = APR_RING_FIRST(&(pollset->p->query_ring));
+ ep != APR_RING_SENTINEL(&(pollset->p->query_ring),
+ pfd_elem_t, link);
+ ep = APR_RING_NEXT(ep, link)) {
+
+ if (descriptor->desc.s == ep->pfd.desc.s) {
+ APR_RING_REMOVE(ep, link);
+ APR_RING_INSERT_TAIL(&(pollset->p->dead_ring),
+ ep, pfd_elem_t, link);
+ break;
+ }
+ }
+
+ pollset_unlock_rings();
+ }
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ int ret;
+ apr_status_t rv = APR_SUCCESS;
+
+ *num = 0;
+
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+
+ ret = epoll_wait(pollset->p->epoll_fd, pollset->p->pollset, pollset->nalloc,
+ timeout);
+ if (ret < 0) {
+ rv = apr_get_netos_error();
+ }
+ else if (ret == 0) {
+ rv = APR_TIMEUP;
+ }
+ else {
+ int i, j;
+ const apr_pollfd_t *fdptr;
+
+ for (i = 0, j = 0; i < ret; i++) {
+ if (pollset->flags & APR_POLLSET_NOCOPY) {
+ fdptr = (apr_pollfd_t *)(pollset->p->pollset[i].data.ptr);
+ }
+ else {
+ fdptr = &(((pfd_elem_t *) (pollset->p->pollset[i].data.ptr))->pfd);
+ }
+ /* Check if the polled descriptor is our
+ * wakeup pipe. In that case do not put it result set.
+ */
+ if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
+ fdptr->desc_type == APR_POLL_FILE &&
+ fdptr->desc.f == pollset->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollset->wakeup_pipe);
+ rv = APR_EINTR;
+ }
+ else {
+ pollset->p->result_set[j] = *fdptr;
+ pollset->p->result_set[j].rtnevents =
+ get_epoll_revent(pollset->p->pollset[i].events);
+ j++;
+ }
+ }
+ if (((*num) = j)) { /* any event besides wakeup pipe? */
+ rv = APR_SUCCESS;
+
+ if (descriptors) {
+ *descriptors = pollset->p->result_set;
+ }
+ }
+ }
+
+ if (!(pollset->flags & APR_POLLSET_NOCOPY)) {
+ pollset_lock_rings();
+
+ /* Shift all PFDs in the Dead Ring to the Free Ring */
+ APR_RING_CONCAT(&(pollset->p->free_ring), &(pollset->p->dead_ring), pfd_elem_t, link);
+
+ pollset_unlock_rings();
+ }
+
+ return rv;
+}
+
+static const apr_pollset_provider_t impl = {
+ impl_pollset_create,
+ impl_pollset_add,
+ impl_pollset_remove,
+ impl_pollset_poll,
+ impl_pollset_cleanup,
+ "epoll"
+};
+
+const apr_pollset_provider_t *const apr_pollset_provider_epoll = &impl;
+
+static apr_status_t impl_pollcb_cleanup(apr_pollcb_t *pollcb)
+{
+ close(pollcb->fd);
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_create(apr_pollcb_t *pollcb,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ int fd;
+
+#ifdef HAVE_EPOLL_CREATE1
+ fd = epoll_create1(EPOLL_CLOEXEC);
+#else
+ fd = epoll_create(size);
+#endif
+
+ if (fd < 0) {
+ return apr_get_netos_error();
+ }
+
+#ifndef HAVE_EPOLL_CREATE1
+ {
+ int fd_flags;
+ apr_status_t rv;
+
+ if ((fd_flags = fcntl(fd, F_GETFD)) == -1) {
+ rv = errno;
+ close(fd);
+ pollcb->fd = -1;
+ return rv;
+ }
+
+ fd_flags |= FD_CLOEXEC;
+ if (fcntl(fd, F_SETFD, fd_flags) == -1) {
+ rv = errno;
+ close(fd);
+ pollcb->fd = -1;
+ return rv;
+ }
+ }
+#endif
+
+ pollcb->fd = fd;
+ pollcb->pollset.epoll = apr_palloc(p, size * sizeof(struct epoll_event));
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_add(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ struct epoll_event ev = { 0 };
+ int ret;
+
+ ev.events = get_epoll_event(descriptor->reqevents);
+ ev.data.ptr = (void *) descriptor;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ ret = epoll_ctl(pollcb->fd, EPOLL_CTL_ADD,
+ descriptor->desc.s->socketdes, &ev);
+ }
+ else {
+ ret = epoll_ctl(pollcb->fd, EPOLL_CTL_ADD,
+ descriptor->desc.f->filedes, &ev);
+ }
+
+ if (ret == -1) {
+ return apr_get_netos_error();
+ }
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_remove(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ apr_status_t rv = APR_SUCCESS;
+ struct epoll_event ev = {0}; /* ignored, but must be passed with
+ * kernel < 2.6.9
+ */
+ int ret;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ ret = epoll_ctl(pollcb->fd, EPOLL_CTL_DEL,
+ descriptor->desc.s->socketdes, &ev);
+ }
+ else {
+ ret = epoll_ctl(pollcb->fd, EPOLL_CTL_DEL,
+ descriptor->desc.f->filedes, &ev);
+ }
+
+ if (ret < 0) {
+ rv = APR_NOTFOUND;
+ }
+
+ return rv;
+}
+
+
+static apr_status_t impl_pollcb_poll(apr_pollcb_t *pollcb,
+ apr_interval_time_t timeout,
+ apr_pollcb_cb_t func,
+ void *baton)
+{
+ int ret, i;
+ apr_status_t rv = APR_SUCCESS;
+
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+
+ ret = epoll_wait(pollcb->fd, pollcb->pollset.epoll, pollcb->nalloc,
+ timeout);
+ if (ret < 0) {
+ rv = apr_get_netos_error();
+ }
+ else if (ret == 0) {
+ rv = APR_TIMEUP;
+ }
+ else {
+ for (i = 0; i < ret; i++) {
+ apr_pollfd_t *pollfd = (apr_pollfd_t *)(pollcb->pollset.epoll[i].data.ptr);
+
+ if ((pollcb->flags & APR_POLLSET_WAKEABLE) &&
+ pollfd->desc_type == APR_POLL_FILE &&
+ pollfd->desc.f == pollcb->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollcb->wakeup_pipe);
+ return APR_EINTR;
+ }
+
+ pollfd->rtnevents = get_epoll_revent(pollcb->pollset.epoll[i].events);
+
+ rv = func(baton, pollfd);
+ if (rv) {
+ return rv;
+ }
+ }
+ }
+
+ return rv;
+}
+
+static const apr_pollcb_provider_t impl_cb = {
+ impl_pollcb_create,
+ impl_pollcb_add,
+ impl_pollcb_remove,
+ impl_pollcb_poll,
+ impl_pollcb_cleanup,
+ "epoll"
+};
+
+const apr_pollcb_provider_t *const apr_pollcb_provider_epoll = &impl_cb;
+
+#endif /* HAVE_EPOLL */
diff --git a/poll/unix/kqueue.c b/poll/unix/kqueue.c
new file mode 100644
index 0000000..548464d
--- /dev/null
+++ b/poll/unix/kqueue.c
@@ -0,0 +1,505 @@
+/* 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 "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+#include "apr_arch_inherit.h"
+
+#ifdef HAVE_KQUEUE
+
+static apr_int16_t get_kqueue_revent(apr_int16_t event, apr_int16_t flags)
+{
+ apr_int16_t rv = 0;
+
+ if (event == EVFILT_READ)
+ rv |= APR_POLLIN;
+ else if (event == EVFILT_WRITE)
+ rv |= APR_POLLOUT;
+ if (flags & EV_EOF)
+ rv |= APR_POLLHUP;
+ /* APR_POLLPRI, APR_POLLERR, and APR_POLLNVAL are not handled by this
+ * implementation.
+ * TODO: See if EV_ERROR + certain system errors in the returned data field
+ * should map to APR_POLLNVAL.
+ */
+ return rv;
+}
+
+struct apr_pollset_private_t
+{
+ int kqueue_fd;
+ struct kevent kevent;
+ apr_uint32_t setsize;
+ struct kevent *ke_set;
+ apr_pollfd_t *result_set;
+#if APR_HAS_THREADS
+ /* A thread mutex to protect operations on the rings */
+ apr_thread_mutex_t *ring_lock;
+#endif
+ /* A ring containing all of the pollfd_t that are active */
+ APR_RING_HEAD(pfd_query_ring_t, pfd_elem_t) query_ring;
+ /* A ring of pollfd_t that have been used, and then _remove'd */
+ APR_RING_HEAD(pfd_free_ring_t, pfd_elem_t) free_ring;
+ /* A ring of pollfd_t where rings that have been _remove'd but
+ might still be inside a _poll */
+ APR_RING_HEAD(pfd_dead_ring_t, pfd_elem_t) dead_ring;
+};
+
+static apr_status_t impl_pollset_cleanup(apr_pollset_t *pollset)
+{
+ close(pollset->p->kqueue_fd);
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_create(apr_pollset_t *pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ apr_status_t rv;
+ pollset->p = apr_palloc(p, sizeof(apr_pollset_private_t));
+#if APR_HAS_THREADS
+ if (flags & APR_POLLSET_THREADSAFE &&
+ ((rv = apr_thread_mutex_create(&pollset->p->ring_lock,
+ APR_THREAD_MUTEX_DEFAULT,
+ p)) != APR_SUCCESS)) {
+ pollset->p = NULL;
+ return rv;
+ }
+#else
+ if (flags & APR_POLLSET_THREADSAFE) {
+ pollset->p = NULL;
+ return APR_ENOTIMPL;
+ }
+#endif
+
+ /* POLLIN and POLLOUT are represented in different returned
+ * events, so we need 2 entries per descriptor in the result set,
+ * both for what is returned by kevent() and what is returned to
+ * the caller of apr_pollset_poll() (since it doesn't spend the
+ * CPU to coalesce separate APR_POLLIN and APR_POLLOUT events
+ * for the same descriptor)
+ */
+ pollset->p->setsize = 2 * size;
+
+ pollset->p->ke_set =
+ (struct kevent *) apr_palloc(p, pollset->p->setsize * sizeof(struct kevent));
+
+ memset(pollset->p->ke_set, 0, pollset->p->setsize * sizeof(struct kevent));
+
+ pollset->p->kqueue_fd = kqueue();
+
+ if (pollset->p->kqueue_fd == -1) {
+ pollset->p = NULL;
+ return apr_get_netos_error();
+ }
+
+ {
+ int flags;
+
+ if ((flags = fcntl(pollset->p->kqueue_fd, F_GETFD)) == -1) {
+ rv = errno;
+ close(pollset->p->kqueue_fd);
+ pollset->p = NULL;
+ return rv;
+ }
+
+ flags |= FD_CLOEXEC;
+ if (fcntl(pollset->p->kqueue_fd, F_SETFD, flags) == -1) {
+ rv = errno;
+ close(pollset->p->kqueue_fd);
+ pollset->p = NULL;
+ return rv;
+ }
+ }
+
+ pollset->p->result_set = apr_palloc(p, pollset->p->setsize * sizeof(apr_pollfd_t));
+
+ APR_RING_INIT(&pollset->p->query_ring, pfd_elem_t, link);
+ APR_RING_INIT(&pollset->p->free_ring, pfd_elem_t, link);
+ APR_RING_INIT(&pollset->p->dead_ring, pfd_elem_t, link);
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ apr_os_sock_t fd;
+ pfd_elem_t *elem;
+ apr_status_t rv = APR_SUCCESS;
+
+ pollset_lock_rings();
+
+ if (!APR_RING_EMPTY(&(pollset->p->free_ring), pfd_elem_t, link)) {
+ elem = APR_RING_FIRST(&(pollset->p->free_ring));
+ APR_RING_REMOVE(elem, link);
+ }
+ else {
+ elem = (pfd_elem_t *) apr_palloc(pollset->pool, sizeof(pfd_elem_t));
+ APR_RING_ELEM_INIT(elem, link);
+ }
+ elem->pfd = *descriptor;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ if (descriptor->reqevents & APR_POLLIN) {
+ EV_SET(&pollset->p->kevent, fd, EVFILT_READ, EV_ADD, 0, 0, elem);
+
+ if (kevent(pollset->p->kqueue_fd, &pollset->p->kevent, 1, NULL, 0,
+ NULL) == -1) {
+ rv = apr_get_netos_error();
+ }
+ }
+
+ if (descriptor->reqevents & APR_POLLOUT && rv == APR_SUCCESS) {
+ EV_SET(&pollset->p->kevent, fd, EVFILT_WRITE, EV_ADD, 0, 0, elem);
+
+ if (kevent(pollset->p->kqueue_fd, &pollset->p->kevent, 1, NULL, 0,
+ NULL) == -1) {
+ rv = apr_get_netos_error();
+ }
+ }
+
+ if (rv == APR_SUCCESS) {
+ APR_RING_INSERT_TAIL(&(pollset->p->query_ring), elem, pfd_elem_t, link);
+ }
+ else {
+ APR_RING_INSERT_TAIL(&(pollset->p->free_ring), elem, pfd_elem_t, link);
+ }
+
+ pollset_unlock_rings();
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_remove(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ pfd_elem_t *ep;
+ apr_status_t rv;
+ apr_os_sock_t fd;
+
+ pollset_lock_rings();
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ rv = APR_NOTFOUND; /* unless at least one of the specified conditions is */
+ if (descriptor->reqevents & APR_POLLIN) {
+ EV_SET(&pollset->p->kevent, fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
+
+ if (kevent(pollset->p->kqueue_fd, &pollset->p->kevent, 1, NULL, 0,
+ NULL) != -1) {
+ rv = APR_SUCCESS;
+ }
+ }
+
+ if (descriptor->reqevents & APR_POLLOUT) {
+ EV_SET(&pollset->p->kevent, fd, EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
+
+ if (kevent(pollset->p->kqueue_fd, &pollset->p->kevent, 1, NULL, 0,
+ NULL) != -1) {
+ rv = APR_SUCCESS;
+ }
+ }
+
+ for (ep = APR_RING_FIRST(&(pollset->p->query_ring));
+ ep != APR_RING_SENTINEL(&(pollset->p->query_ring),
+ pfd_elem_t, link);
+ ep = APR_RING_NEXT(ep, link)) {
+
+ if (descriptor->desc.s == ep->pfd.desc.s) {
+ APR_RING_REMOVE(ep, link);
+ APR_RING_INSERT_TAIL(&(pollset->p->dead_ring),
+ ep, pfd_elem_t, link);
+ break;
+ }
+ }
+
+ pollset_unlock_rings();
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ int ret;
+ struct timespec tv, *tvptr;
+ apr_status_t rv = APR_SUCCESS;
+
+ *num = 0;
+
+ if (timeout < 0) {
+ tvptr = NULL;
+ }
+ else {
+ tv.tv_sec = (long) apr_time_sec(timeout);
+ tv.tv_nsec = (long) apr_time_usec(timeout) * 1000;
+ tvptr = &tv;
+ }
+
+ ret = kevent(pollset->p->kqueue_fd, NULL, 0, pollset->p->ke_set,
+ pollset->p->setsize, tvptr);
+ if (ret < 0) {
+ rv = apr_get_netos_error();
+ }
+ else if (ret == 0) {
+ rv = APR_TIMEUP;
+ }
+ else {
+ int i, j;
+ const apr_pollfd_t *fd;
+
+ for (i = 0, j = 0; i < ret; i++) {
+ fd = &((pfd_elem_t *)pollset->p->ke_set[i].udata)->pfd;
+ if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
+ fd->desc_type == APR_POLL_FILE &&
+ fd->desc.f == pollset->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollset->wakeup_pipe);
+ rv = APR_EINTR;
+ }
+ else {
+ pollset->p->result_set[j] = *fd;
+ pollset->p->result_set[j].rtnevents =
+ get_kqueue_revent(pollset->p->ke_set[i].filter,
+ pollset->p->ke_set[i].flags);
+ j++;
+ }
+ }
+ if ((*num = j)) { /* any event besides wakeup pipe? */
+ rv = APR_SUCCESS;
+ if (descriptors) {
+ *descriptors = pollset->p->result_set;
+ }
+ }
+ }
+
+ pollset_lock_rings();
+
+ /* Shift all PFDs in the Dead Ring to the Free Ring */
+ APR_RING_CONCAT(&(pollset->p->free_ring), &(pollset->p->dead_ring),
+ pfd_elem_t, link);
+
+ pollset_unlock_rings();
+
+ return rv;
+}
+
+static const apr_pollset_provider_t impl = {
+ impl_pollset_create,
+ impl_pollset_add,
+ impl_pollset_remove,
+ impl_pollset_poll,
+ impl_pollset_cleanup,
+ "kqueue"
+};
+
+const apr_pollset_provider_t *apr_pollset_provider_kqueue = &impl;
+
+static apr_status_t impl_pollcb_cleanup(apr_pollcb_t *pollcb)
+{
+ close(pollcb->fd);
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_create(apr_pollcb_t *pollcb,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ int fd;
+
+ fd = kqueue();
+ if (fd < 0) {
+ return apr_get_netos_error();
+ }
+
+ {
+ int flags;
+ apr_status_t rv;
+
+ if ((flags = fcntl(fd, F_GETFD)) == -1) {
+ rv = errno;
+ close(fd);
+ pollcb->fd = -1;
+ return rv;
+ }
+
+ flags |= FD_CLOEXEC;
+ if (fcntl(fd, F_SETFD, flags) == -1) {
+ rv = errno;
+ close(fd);
+ pollcb->fd = -1;
+ return rv;
+ }
+ }
+
+ pollcb->fd = fd;
+ pollcb->pollset.ke = (struct kevent *) apr_pcalloc(p, 2 * size * sizeof(struct kevent));
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_add(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ apr_os_sock_t fd;
+ struct kevent ev;
+ apr_status_t rv = APR_SUCCESS;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ if (descriptor->reqevents & APR_POLLIN) {
+ EV_SET(&ev, fd, EVFILT_READ, EV_ADD, 0, 0, descriptor);
+
+ if (kevent(pollcb->fd, &ev, 1, NULL, 0, NULL) == -1) {
+ rv = apr_get_netos_error();
+ }
+ }
+
+ if (descriptor->reqevents & APR_POLLOUT && rv == APR_SUCCESS) {
+ EV_SET(&ev, fd, EVFILT_WRITE, EV_ADD, 0, 0, descriptor);
+
+ if (kevent(pollcb->fd, &ev, 1, NULL, 0, NULL) == -1) {
+ rv = apr_get_netos_error();
+ }
+ }
+
+ return rv;
+}
+
+static apr_status_t impl_pollcb_remove(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ apr_status_t rv;
+ struct kevent ev;
+ apr_os_sock_t fd;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ rv = APR_NOTFOUND; /* unless at least one of the specified conditions is */
+ if (descriptor->reqevents & APR_POLLIN) {
+ EV_SET(&ev, fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
+
+ if (kevent(pollcb->fd, &ev, 1, NULL, 0, NULL) != -1) {
+ rv = APR_SUCCESS;
+ }
+ }
+
+ if (descriptor->reqevents & APR_POLLOUT) {
+ EV_SET(&ev, fd, EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
+
+ if (kevent(pollcb->fd, &ev, 1, NULL, 0, NULL) != -1) {
+ rv = APR_SUCCESS;
+ }
+ }
+
+ return rv;
+}
+
+
+static apr_status_t impl_pollcb_poll(apr_pollcb_t *pollcb,
+ apr_interval_time_t timeout,
+ apr_pollcb_cb_t func,
+ void *baton)
+{
+ int ret, i;
+ struct timespec tv, *tvptr;
+ apr_status_t rv = APR_SUCCESS;
+
+ if (timeout < 0) {
+ tvptr = NULL;
+ }
+ else {
+ tv.tv_sec = (long) apr_time_sec(timeout);
+ tv.tv_nsec = (long) apr_time_usec(timeout) * 1000;
+ tvptr = &tv;
+ }
+
+ ret = kevent(pollcb->fd, NULL, 0, pollcb->pollset.ke, 2 * pollcb->nalloc,
+ tvptr);
+
+ if (ret < 0) {
+ rv = apr_get_netos_error();
+ }
+ else if (ret == 0) {
+ rv = APR_TIMEUP;
+ }
+ else {
+ for (i = 0; i < ret; i++) {
+ apr_pollfd_t *pollfd = (apr_pollfd_t *)(pollcb->pollset.ke[i].udata);
+
+ if ((pollcb->flags & APR_POLLSET_WAKEABLE) &&
+ pollfd->desc_type == APR_POLL_FILE &&
+ pollfd->desc.f == pollcb->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollcb->wakeup_pipe);
+ return APR_EINTR;
+ }
+
+ pollfd->rtnevents = get_kqueue_revent(pollcb->pollset.ke[i].filter,
+ pollcb->pollset.ke[i].flags);
+
+ rv = func(baton, pollfd);
+
+ if (rv) {
+ return rv;
+ }
+ }
+ }
+
+ return rv;
+}
+
+static const apr_pollcb_provider_t impl_cb = {
+ impl_pollcb_create,
+ impl_pollcb_add,
+ impl_pollcb_remove,
+ impl_pollcb_poll,
+ impl_pollcb_cleanup,
+ "kqueue"
+};
+
+const apr_pollcb_provider_t *apr_pollcb_provider_kqueue = &impl_cb;
+
+#endif /* HAVE_KQUEUE */
diff --git a/poll/unix/poll.c b/poll/unix/poll.c
new file mode 100644
index 0000000..5b878f1
--- /dev/null
+++ b/poll/unix/poll.c
@@ -0,0 +1,460 @@
+/* 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 "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_misc.h"
+#include "apr_arch_poll_private.h"
+
+#if defined(HAVE_POLL)
+
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+
+static apr_int16_t get_event(apr_int16_t event)
+{
+ apr_int16_t rv = 0;
+
+ if (event & APR_POLLIN)
+ rv |= POLLIN;
+ if (event & APR_POLLPRI)
+ rv |= POLLPRI;
+ if (event & APR_POLLOUT)
+ rv |= POLLOUT;
+ /* POLLERR, POLLHUP, and POLLNVAL aren't valid as requested events */
+
+ return rv;
+}
+
+static apr_int16_t get_revent(apr_int16_t event)
+{
+ apr_int16_t rv = 0;
+
+ if (event & POLLIN)
+ rv |= APR_POLLIN;
+ if (event & POLLPRI)
+ rv |= APR_POLLPRI;
+ if (event & POLLOUT)
+ rv |= APR_POLLOUT;
+ if (event & POLLERR)
+ rv |= APR_POLLERR;
+ if (event & POLLHUP)
+ rv |= APR_POLLHUP;
+ if (event & POLLNVAL)
+ rv |= APR_POLLNVAL;
+
+ return rv;
+}
+
+#ifdef POLL_USES_POLL
+
+#define SMALL_POLLSET_LIMIT 8
+
+APR_DECLARE(apr_status_t) apr_poll(apr_pollfd_t *aprset, apr_int32_t num,
+ apr_int32_t *nsds,
+ apr_interval_time_t timeout)
+{
+ int i, num_to_poll;
+#ifdef HAVE_VLA
+ /* XXX: I trust that this is a segv when insufficient stack exists? */
+ struct pollfd pollset[num + 1]; /* +1 since allocating 0 is undefined behaviour */
+#elif defined(HAVE_ALLOCA)
+ struct pollfd *pollset = alloca(sizeof(struct pollfd) * num);
+ if (!pollset)
+ return APR_ENOMEM;
+#else
+ struct pollfd tmp_pollset[SMALL_POLLSET_LIMIT];
+ struct pollfd *pollset;
+
+ if (num <= SMALL_POLLSET_LIMIT) {
+ pollset = tmp_pollset;
+ }
+ else {
+ /* This does require O(n) to copy the descriptors to the internal
+ * mapping.
+ */
+ pollset = malloc(sizeof(struct pollfd) * num);
+ /* The other option is adding an apr_pool_abort() fn to invoke
+ * the pool's out of memory handler
+ */
+ if (!pollset)
+ return APR_ENOMEM;
+ }
+#endif
+ for (i = 0; i < num; i++) {
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ pollset[i].fd = aprset[i].desc.s->socketdes;
+ }
+ else if (aprset[i].desc_type == APR_POLL_FILE) {
+ pollset[i].fd = aprset[i].desc.f->filedes;
+ }
+ else {
+ break;
+ }
+ pollset[i].events = get_event(aprset[i].reqevents);
+ }
+ num_to_poll = i;
+
+ if (timeout > 0) {
+ timeout /= 1000; /* convert microseconds to milliseconds */
+ }
+
+ i = poll(pollset, num_to_poll, timeout);
+ (*nsds) = i;
+
+ if (i > 0) { /* poll() sets revents only if an event was signalled;
+ * we don't promise to set rtnevents unless an event
+ * was signalled
+ */
+ for (i = 0; i < num; i++) {
+ aprset[i].rtnevents = get_revent(pollset[i].revents);
+ }
+ }
+
+#if !defined(HAVE_VLA) && !defined(HAVE_ALLOCA)
+ if (num > SMALL_POLLSET_LIMIT) {
+ free(pollset);
+ }
+#endif
+
+ if ((*nsds) < 0) {
+ return apr_get_netos_error();
+ }
+ if ((*nsds) == 0) {
+ return APR_TIMEUP;
+ }
+ return APR_SUCCESS;
+}
+
+
+#endif /* POLL_USES_POLL */
+
+struct apr_pollset_private_t
+{
+ struct pollfd *pollset;
+ apr_pollfd_t *query_set;
+ apr_pollfd_t *result_set;
+};
+
+static apr_status_t impl_pollset_create(apr_pollset_t *pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ if (flags & APR_POLLSET_THREADSAFE) {
+ return APR_ENOTIMPL;
+ }
+#ifdef WIN32
+ if (!APR_HAVE_LATE_DLL_FUNC(WSAPoll)) {
+ return APR_ENOTIMPL;
+ }
+#endif
+ pollset->p = apr_palloc(p, sizeof(apr_pollset_private_t));
+ pollset->p->pollset = apr_palloc(p, size * sizeof(struct pollfd));
+ pollset->p->query_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+ pollset->p->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ if (pollset->nelts == pollset->nalloc) {
+ return APR_ENOMEM;
+ }
+
+ pollset->p->query_set[pollset->nelts] = *descriptor;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ pollset->p->pollset[pollset->nelts].fd = descriptor->desc.s->socketdes;
+ }
+ else {
+#if APR_FILES_AS_SOCKETS
+ pollset->p->pollset[pollset->nelts].fd = descriptor->desc.f->filedes;
+#else
+ if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
+ descriptor->desc.f == pollset->wakeup_pipe[0])
+ pollset->p->pollset[pollset->nelts].fd = (SOCKET)descriptor->desc.f->filedes;
+ else
+ return APR_EBADF;
+#endif
+ }
+ pollset->p->pollset[pollset->nelts].events =
+ get_event(descriptor->reqevents);
+ pollset->nelts++;
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_remove(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ apr_uint32_t i;
+
+ for (i = 0; i < pollset->nelts; i++) {
+ if (descriptor->desc.s == pollset->p->query_set[i].desc.s) {
+ /* Found an instance of the fd: remove this and any other copies */
+ apr_uint32_t dst = i;
+ apr_uint32_t old_nelts = pollset->nelts;
+ pollset->nelts--;
+ for (i++; i < old_nelts; i++) {
+ if (descriptor->desc.s == pollset->p->query_set[i].desc.s) {
+ pollset->nelts--;
+ }
+ else {
+ pollset->p->pollset[dst] = pollset->p->pollset[i];
+ pollset->p->query_set[dst] = pollset->p->query_set[i];
+ dst++;
+ }
+ }
+ return APR_SUCCESS;
+ }
+ }
+
+ return APR_NOTFOUND;
+}
+
+static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ int ret;
+ apr_status_t rv = APR_SUCCESS;
+
+ *num = 0;
+
+#ifdef WIN32
+ /* WSAPoll() requires at least one socket. */
+ if (pollset->nelts == 0) {
+ if (timeout > 0) {
+ apr_sleep(timeout);
+ return APR_TIMEUP;
+ }
+ return APR_SUCCESS;
+ }
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+ ret = WSAPoll(pollset->p->pollset, pollset->nelts, (int)timeout);
+#else
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+ ret = poll(pollset->p->pollset, pollset->nelts, timeout);
+#endif
+ if (ret < 0) {
+ return apr_get_netos_error();
+ }
+ else if (ret == 0) {
+ return APR_TIMEUP;
+ }
+ else {
+ apr_uint32_t i, j;
+
+ for (i = 0, j = 0; i < pollset->nelts; i++) {
+ if (pollset->p->pollset[i].revents != 0) {
+ /* Check if the polled descriptor is our
+ * wakeup pipe. In that case do not put it result set.
+ */
+ if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
+ pollset->p->query_set[i].desc_type == APR_POLL_FILE &&
+ pollset->p->query_set[i].desc.f == pollset->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollset->wakeup_pipe);
+ rv = APR_EINTR;
+ }
+ else {
+ pollset->p->result_set[j] = pollset->p->query_set[i];
+ pollset->p->result_set[j].rtnevents =
+ get_revent(pollset->p->pollset[i].revents);
+ j++;
+ }
+ }
+ }
+ if ((*num = j)) { /* any event besides wakeup pipe? */
+ rv = APR_SUCCESS;
+ }
+ }
+ if (descriptors && (*num))
+ *descriptors = pollset->p->result_set;
+ return rv;
+}
+
+static const apr_pollset_provider_t impl = {
+ impl_pollset_create,
+ impl_pollset_add,
+ impl_pollset_remove,
+ impl_pollset_poll,
+ NULL,
+ "poll"
+};
+
+const apr_pollset_provider_t *apr_pollset_provider_poll = &impl;
+
+/* Poll method pollcb.
+ * This is probably usable only for WIN32 having WSAPoll
+ */
+static apr_status_t impl_pollcb_create(apr_pollcb_t *pollcb,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+#if APR_HAS_THREADS
+ return APR_ENOTIMPL;
+#else
+ pollcb->fd = -1;
+#ifdef WIN32
+ if (!APR_HAVE_LATE_DLL_FUNC(WSAPoll)) {
+ return APR_ENOTIMPL;
+ }
+#endif
+
+ pollcb->pollset.ps = apr_palloc(p, size * sizeof(struct pollfd));
+ pollcb->copyset = apr_palloc(p, size * sizeof(apr_pollfd_t *));
+
+ return APR_SUCCESS;
+#endif
+}
+
+static apr_status_t impl_pollcb_add(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ if (pollcb->nelts == pollcb->nalloc) {
+ return APR_ENOMEM;
+ }
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ pollcb->pollset.ps[pollcb->nelts].fd = descriptor->desc.s->socketdes;
+ }
+ else {
+#if APR_FILES_AS_SOCKETS
+ pollcb->pollset.ps[pollcb->nelts].fd = descriptor->desc.f->filedes;
+#else
+ return APR_EBADF;
+#endif
+ }
+
+ pollcb->pollset.ps[pollcb->nelts].events =
+ get_event(descriptor->reqevents);
+ pollcb->copyset[pollcb->nelts] = descriptor;
+ pollcb->nelts++;
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_remove(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ apr_uint32_t i;
+
+ for (i = 0; i < pollcb->nelts; i++) {
+ if (descriptor->desc.s == pollcb->copyset[i]->desc.s) {
+ /* Found an instance of the fd: remove this and any other copies */
+ apr_uint32_t dst = i;
+ apr_uint32_t old_nelts = pollcb->nelts;
+ pollcb->nelts--;
+ for (i++; i < old_nelts; i++) {
+ if (descriptor->desc.s == pollcb->copyset[i]->desc.s) {
+ pollcb->nelts--;
+ }
+ else {
+ pollcb->pollset.ps[dst] = pollcb->pollset.ps[i];
+ pollcb->copyset[dst] = pollcb->copyset[i];
+ dst++;
+ }
+ }
+ return APR_SUCCESS;
+ }
+ }
+
+ return APR_NOTFOUND;
+}
+
+static apr_status_t impl_pollcb_poll(apr_pollcb_t *pollcb,
+ apr_interval_time_t timeout,
+ apr_pollcb_cb_t func,
+ void *baton)
+{
+ int ret;
+ apr_status_t rv = APR_SUCCESS;
+ apr_uint32_t i;
+
+#ifdef WIN32
+ /* WSAPoll() requires at least one socket. */
+ if (pollcb->nelts == 0) {
+ if (timeout > 0) {
+ apr_sleep(timeout);
+ return APR_TIMEUP;
+ }
+ return APR_SUCCESS;
+ }
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+ ret = WSAPoll(pollcb->pollset.ps, pollcb->nelts, (int)timeout);
+#else
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+ ret = poll(pollcb->pollset.ps, pollcb->nelts, timeout);
+#endif
+ if (ret < 0) {
+ return apr_get_netos_error();
+ }
+ else if (ret == 0) {
+ return APR_TIMEUP;
+ }
+ else {
+ for (i = 0; i < pollcb->nelts; i++) {
+ if (pollcb->pollset.ps[i].revents != 0) {
+ apr_pollfd_t *pollfd = pollcb->copyset[i];
+
+ if ((pollcb->flags & APR_POLLSET_WAKEABLE) &&
+ pollfd->desc_type == APR_POLL_FILE &&
+ pollfd->desc.f == pollcb->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollcb->wakeup_pipe);
+ return APR_EINTR;
+ }
+
+ pollfd->rtnevents = get_revent(pollcb->pollset.ps[i].revents);
+ rv = func(baton, pollfd);
+ if (rv) {
+ return rv;
+ }
+ }
+ }
+ }
+ return rv;
+}
+
+static const apr_pollcb_provider_t impl_cb = {
+ impl_pollcb_create,
+ impl_pollcb_add,
+ impl_pollcb_remove,
+ impl_pollcb_poll,
+ NULL,
+ "poll"
+};
+
+const apr_pollcb_provider_t *apr_pollcb_provider_poll = &impl_cb;
+
+#endif /* HAVE_POLL */
diff --git a/poll/unix/pollcb.c b/poll/unix/pollcb.c
new file mode 100644
index 0000000..a63ad5c
--- /dev/null
+++ b/poll/unix/pollcb.c
@@ -0,0 +1,224 @@
+/* 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
+/* POSIX defines 1024 for the FD_SETSIZE */
+#define FD_SETSIZE 1024
+#endif
+
+#include "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+
+static apr_pollset_method_e pollset_default_method = POLLSET_DEFAULT_METHOD;
+#if defined(HAVE_KQUEUE)
+extern const apr_pollcb_provider_t *apr_pollcb_provider_kqueue;
+#endif
+#if defined(HAVE_PORT_CREATE)
+extern const apr_pollcb_provider_t *apr_pollcb_provider_port;
+#endif
+#if defined(HAVE_EPOLL)
+extern const apr_pollcb_provider_t *apr_pollcb_provider_epoll;
+#endif
+#if defined(HAVE_POLL)
+extern const apr_pollcb_provider_t *apr_pollcb_provider_poll;
+#endif
+
+static const apr_pollcb_provider_t *pollcb_provider(apr_pollset_method_e method)
+{
+ const apr_pollcb_provider_t *provider = NULL;
+ switch (method) {
+ case APR_POLLSET_KQUEUE:
+#if defined(HAVE_KQUEUE)
+ provider = apr_pollcb_provider_kqueue;
+#endif
+ break;
+ case APR_POLLSET_PORT:
+#if defined(HAVE_PORT_CREATE)
+ provider = apr_pollcb_provider_port;
+#endif
+ break;
+ case APR_POLLSET_EPOLL:
+#if defined(HAVE_EPOLL)
+ provider = apr_pollcb_provider_epoll;
+#endif
+ break;
+ case APR_POLLSET_POLL:
+#if defined(HAVE_POLL)
+ provider = apr_pollcb_provider_poll;
+#endif
+ break;
+ case APR_POLLSET_SELECT:
+ case APR_POLLSET_AIO_MSGQ:
+ case APR_POLLSET_DEFAULT:
+ break;
+ }
+ return provider;
+}
+
+static apr_status_t pollcb_cleanup(void *p)
+{
+ apr_pollcb_t *pollcb = (apr_pollcb_t *) p;
+
+ if (pollcb->provider->cleanup) {
+ (*pollcb->provider->cleanup)(pollcb);
+ }
+ if (pollcb->flags & APR_POLLSET_WAKEABLE) {
+ apr_poll_close_wakeup_pipe(pollcb->wakeup_pipe);
+ }
+
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_pollcb_create_ex(apr_pollcb_t **ret_pollcb,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags,
+ apr_pollset_method_e method)
+{
+ apr_status_t rv;
+ apr_pollcb_t *pollcb;
+ const apr_pollcb_provider_t *provider = NULL;
+
+ *ret_pollcb = NULL;
+
+ #ifdef WIN32
+ /* This will work only if ws2_32.dll has WSAPoll funtion.
+ * We could check the presence of the function here,
+ * but someone might implement other pollcb method in
+ * the future.
+ */
+ if (method == APR_POLLSET_DEFAULT) {
+ method = APR_POLLSET_POLL;
+ }
+ #endif
+
+ if (method == APR_POLLSET_DEFAULT)
+ method = pollset_default_method;
+ while (provider == NULL) {
+ provider = pollcb_provider(method);
+ if (!provider) {
+ if ((flags & APR_POLLSET_NODEFAULT) == APR_POLLSET_NODEFAULT)
+ return APR_ENOTIMPL;
+ if (method == pollset_default_method)
+ return APR_ENOTIMPL;
+ method = pollset_default_method;
+ }
+ }
+
+ if (flags & APR_POLLSET_WAKEABLE) {
+ /* Add room for wakeup descriptor */
+ size++;
+ }
+
+ pollcb = apr_palloc(p, sizeof(*pollcb));
+ pollcb->nelts = 0;
+ pollcb->nalloc = size;
+ pollcb->flags = flags;
+ pollcb->pool = p;
+ pollcb->provider = provider;
+
+ rv = (*provider->create)(pollcb, size, p, flags);
+ if (rv == APR_ENOTIMPL) {
+ if (method == pollset_default_method) {
+ return rv;
+ }
+
+ if ((flags & APR_POLLSET_NODEFAULT) == APR_POLLSET_NODEFAULT) {
+ return rv;
+ }
+
+ /* Try with default provider */
+ provider = pollcb_provider(pollset_default_method);
+ if (!provider) {
+ return APR_ENOTIMPL;
+ }
+ rv = (*provider->create)(pollcb, size, p, flags);
+ if (rv != APR_SUCCESS) {
+ return rv;
+ }
+ pollcb->provider = provider;
+ }
+ else if (rv != APR_SUCCESS) {
+ return rv;
+ }
+
+ if (flags & APR_POLLSET_WAKEABLE) {
+ /* Create wakeup pipe */
+ if ((rv = apr_poll_create_wakeup_pipe(pollcb->pool, &pollcb->wakeup_pfd,
+ pollcb->wakeup_pipe))
+ != APR_SUCCESS) {
+ return rv;
+ }
+
+ if ((rv = apr_pollcb_add(pollcb, &pollcb->wakeup_pfd)) != APR_SUCCESS) {
+ return rv;
+ }
+ }
+ if ((flags & APR_POLLSET_WAKEABLE) || provider->cleanup)
+ apr_pool_cleanup_register(p, pollcb, pollcb_cleanup,
+ apr_pool_cleanup_null);
+
+ *ret_pollcb = pollcb;
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_pollcb_create(apr_pollcb_t **pollcb,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ apr_pollset_method_e method = APR_POLLSET_DEFAULT;
+ return apr_pollcb_create_ex(pollcb, size, p, flags, method);
+}
+
+APR_DECLARE(apr_status_t) apr_pollcb_add(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ return (*pollcb->provider->add)(pollcb, descriptor);
+}
+
+APR_DECLARE(apr_status_t) apr_pollcb_remove(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ return (*pollcb->provider->remove)(pollcb, descriptor);
+}
+
+
+APR_DECLARE(apr_status_t) apr_pollcb_poll(apr_pollcb_t *pollcb,
+ apr_interval_time_t timeout,
+ apr_pollcb_cb_t func,
+ void *baton)
+{
+ return (*pollcb->provider->poll)(pollcb, timeout, func, baton);
+}
+
+APR_DECLARE(apr_status_t) apr_pollcb_wakeup(apr_pollcb_t *pollcb)
+{
+ if (pollcb->flags & APR_POLLSET_WAKEABLE)
+ return apr_file_putc(1, pollcb->wakeup_pipe[1]);
+ else
+ return APR_EINIT;
+}
+
+APR_DECLARE(const char *) apr_pollcb_method_name(apr_pollcb_t *pollcb)
+{
+ return pollcb->provider->name;
+}
diff --git a/poll/unix/pollset.c b/poll/unix/pollset.c
new file mode 100644
index 0000000..11b5736
--- /dev/null
+++ b/poll/unix/pollset.c
@@ -0,0 +1,247 @@
+/* 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
+/* POSIX defines 1024 for the FD_SETSIZE */
+#define FD_SETSIZE 1024
+#endif
+
+#include "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+#include "apr_arch_inherit.h"
+
+static apr_pollset_method_e pollset_default_method = POLLSET_DEFAULT_METHOD;
+
+static apr_status_t pollset_cleanup(void *p)
+{
+ apr_pollset_t *pollset = (apr_pollset_t *) p;
+ if (pollset->provider->cleanup) {
+ (*pollset->provider->cleanup)(pollset);
+ }
+ if (pollset->flags & APR_POLLSET_WAKEABLE) {
+ apr_poll_close_wakeup_pipe(pollset->wakeup_pipe);
+ }
+
+ return APR_SUCCESS;
+}
+
+#if defined(HAVE_KQUEUE)
+extern const apr_pollset_provider_t *apr_pollset_provider_kqueue;
+#endif
+#if defined(HAVE_PORT_CREATE)
+extern const apr_pollset_provider_t *apr_pollset_provider_port;
+#endif
+#if defined(HAVE_EPOLL)
+extern const apr_pollset_provider_t *apr_pollset_provider_epoll;
+#endif
+#if defined(HAVE_AIO_MSGQ)
+extern const apr_pollset_provider_t *apr_pollset_provider_aio_msgq;
+#endif
+#if defined(HAVE_POLL)
+extern const apr_pollset_provider_t *apr_pollset_provider_poll;
+#endif
+extern const apr_pollset_provider_t *apr_pollset_provider_select;
+
+static const apr_pollset_provider_t *pollset_provider(apr_pollset_method_e method)
+{
+ const apr_pollset_provider_t *provider = NULL;
+ switch (method) {
+ case APR_POLLSET_KQUEUE:
+#if defined(HAVE_KQUEUE)
+ provider = apr_pollset_provider_kqueue;
+#endif
+ break;
+ case APR_POLLSET_PORT:
+#if defined(HAVE_PORT_CREATE)
+ provider = apr_pollset_provider_port;
+#endif
+ break;
+ case APR_POLLSET_EPOLL:
+#if defined(HAVE_EPOLL)
+ provider = apr_pollset_provider_epoll;
+#endif
+ break;
+ case APR_POLLSET_AIO_MSGQ:
+#if defined(HAVE_AIO_MSGQ)
+ provider = apr_pollset_provider_aio_msgq;
+#endif
+ break;
+ case APR_POLLSET_POLL:
+#if defined(HAVE_POLL)
+ provider = apr_pollset_provider_poll;
+#endif
+ break;
+ case APR_POLLSET_SELECT:
+ provider = apr_pollset_provider_select;
+ break;
+ case APR_POLLSET_DEFAULT:
+ break;
+ }
+ return provider;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_create_ex(apr_pollset_t **ret_pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags,
+ apr_pollset_method_e method)
+{
+ apr_status_t rv;
+ apr_pollset_t *pollset;
+ const apr_pollset_provider_t *provider = NULL;
+
+ *ret_pollset = NULL;
+
+ #ifdef WIN32
+ /* Favor WSAPoll if supported.
+ * This will work only if ws2_32.dll has WSAPoll funtion.
+ * In other cases it will fall back to select() method unless
+ * the APR_POLLSET_NODEFAULT is added to the flags.
+ */
+ if (method == APR_POLLSET_DEFAULT) {
+ method = APR_POLLSET_POLL;
+ }
+ #endif
+
+ if (method == APR_POLLSET_DEFAULT)
+ method = pollset_default_method;
+ while (provider == NULL) {
+ provider = pollset_provider(method);
+ if (!provider) {
+ if ((flags & APR_POLLSET_NODEFAULT) == APR_POLLSET_NODEFAULT)
+ return APR_ENOTIMPL;
+ if (method == pollset_default_method)
+ return APR_ENOTIMPL;
+ method = pollset_default_method;
+ }
+ }
+ if (flags & APR_POLLSET_WAKEABLE) {
+ /* Add room for wakeup descriptor */
+ size++;
+ }
+
+ pollset = apr_palloc(p, sizeof(*pollset));
+ pollset->nelts = 0;
+ pollset->nalloc = size;
+ pollset->pool = p;
+ pollset->flags = flags;
+ pollset->provider = provider;
+
+ rv = (*provider->create)(pollset, size, p, flags);
+ if (rv == APR_ENOTIMPL) {
+ if (method == pollset_default_method) {
+ return rv;
+ }
+ provider = pollset_provider(pollset_default_method);
+ if (!provider) {
+ return APR_ENOTIMPL;
+ }
+ rv = (*provider->create)(pollset, size, p, flags);
+ if (rv != APR_SUCCESS) {
+ return rv;
+ }
+ pollset->provider = provider;
+ }
+ else if (rv != APR_SUCCESS) {
+ return rv;
+ }
+ if (flags & APR_POLLSET_WAKEABLE) {
+ /* Create wakeup pipe */
+ if ((rv = apr_poll_create_wakeup_pipe(pollset->pool, &pollset->wakeup_pfd,
+ pollset->wakeup_pipe))
+ != APR_SUCCESS) {
+ return rv;
+ }
+
+ if ((rv = apr_pollset_add(pollset, &pollset->wakeup_pfd)) != APR_SUCCESS) {
+ return rv;
+ }
+ }
+ if ((flags & APR_POLLSET_WAKEABLE) || provider->cleanup)
+ apr_pool_cleanup_register(p, pollset, pollset_cleanup,
+ apr_pool_cleanup_null);
+
+ *ret_pollset = pollset;
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(const char *) apr_pollset_method_name(apr_pollset_t *pollset)
+{
+ return pollset->provider->name;
+}
+
+APR_DECLARE(const char *) apr_poll_method_defname(void)
+{
+ const apr_pollset_provider_t *provider = NULL;
+
+ provider = pollset_provider(pollset_default_method);
+ if (provider)
+ return provider->name;
+ else
+ return "unknown";
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_create(apr_pollset_t **pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ apr_pollset_method_e method = APR_POLLSET_DEFAULT;
+ return apr_pollset_create_ex(pollset, size, p, flags, method);
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_destroy(apr_pollset_t * pollset)
+{
+ if (pollset->flags & APR_POLLSET_WAKEABLE ||
+ pollset->provider->cleanup)
+ return apr_pool_cleanup_run(pollset->pool, pollset,
+ pollset_cleanup);
+ else
+ return APR_SUCCESS;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_wakeup(apr_pollset_t *pollset)
+{
+ if (pollset->flags & APR_POLLSET_WAKEABLE)
+ return apr_file_putc(1, pollset->wakeup_pipe[1]);
+ else
+ return APR_EINIT;
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ return (*pollset->provider->add)(pollset, descriptor);
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_remove(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ return (*pollset->provider->remove)(pollset, descriptor);
+}
+
+APR_DECLARE(apr_status_t) apr_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ return (*pollset->provider->poll)(pollset, timeout, num, descriptors);
+}
diff --git a/poll/unix/port.c b/poll/unix/port.c
new file mode 100644
index 0000000..c1e5994
--- /dev/null
+++ b/poll/unix/port.c
@@ -0,0 +1,594 @@
+/* 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 "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_atomic.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+#include "apr_arch_inherit.h"
+
+#if defined(HAVE_PORT_CREATE)
+
+static apr_int16_t get_event(apr_int16_t event)
+{
+ apr_int16_t rv = 0;
+
+ if (event & APR_POLLIN)
+ rv |= POLLIN;
+ if (event & APR_POLLPRI)
+ rv |= POLLPRI;
+ if (event & APR_POLLOUT)
+ rv |= POLLOUT;
+ /* POLLERR, POLLHUP, and POLLNVAL aren't valid as requested events */
+
+ return rv;
+}
+
+static apr_int16_t get_revent(apr_int16_t event)
+{
+ apr_int16_t rv = 0;
+
+ if (event & POLLIN)
+ rv |= APR_POLLIN;
+ if (event & POLLPRI)
+ rv |= APR_POLLPRI;
+ if (event & POLLOUT)
+ rv |= APR_POLLOUT;
+ if (event & POLLERR)
+ rv |= APR_POLLERR;
+ if (event & POLLHUP)
+ rv |= APR_POLLHUP;
+ if (event & POLLNVAL)
+ rv |= APR_POLLNVAL;
+
+ return rv;
+}
+
+
+struct apr_pollset_private_t
+{
+ int port_fd;
+ port_event_t *port_set;
+ apr_pollfd_t *result_set;
+#if APR_HAS_THREADS
+ /* A thread mutex to protect operations on the rings */
+ apr_thread_mutex_t *ring_lock;
+#endif
+ /* A ring containing all of the pollfd_t that are active */
+ APR_RING_HEAD(pfd_query_ring_t, pfd_elem_t) query_ring;
+ /* A ring containing the pollfd_t that will be added on the
+ * next call to apr_pollset_poll().
+ */
+ APR_RING_HEAD(pfd_add_ring_t, pfd_elem_t) add_ring;
+ /* A ring of pollfd_t that have been used, and then _remove'd */
+ APR_RING_HEAD(pfd_free_ring_t, pfd_elem_t) free_ring;
+ /* A ring of pollfd_t where rings that have been _remove'd but
+ might still be inside a _poll */
+ APR_RING_HEAD(pfd_dead_ring_t, pfd_elem_t) dead_ring;
+ /* number of threads in poll */
+ volatile apr_uint32_t waiting;
+};
+
+static apr_status_t call_port_getn(int port, port_event_t list[],
+ unsigned int max, unsigned int *nget,
+ apr_interval_time_t timeout)
+{
+ struct timespec tv, *tvptr;
+ int ret;
+ apr_status_t rv = APR_SUCCESS;
+
+ if (timeout < 0) {
+ tvptr = NULL;
+ }
+ else {
+ tv.tv_sec = (long) apr_time_sec(timeout);
+ tv.tv_nsec = (long) apr_time_usec(timeout) * 1000;
+ tvptr = &tv;
+ }
+
+ list[0].portev_user = (void *)-1; /* so we can double check that an
+ * event was returned
+ */
+
+ ret = port_getn(port, list, max, nget, tvptr);
+ /* Note: 32-bit port_getn() on Solaris 10 x86 returns large negative
+ * values instead of 0 when returning immediately.
+ */
+
+ if (ret == -1) {
+ rv = apr_get_netos_error();
+
+ switch(rv) {
+ case EINTR:
+ case ETIME:
+ if (*nget > 0 && list[0].portev_user != (void *)-1) {
+ /* This confusing API can return an event at the same time
+ * that it reports EINTR or ETIME. If that occurs, just
+ * report the event. With EINTR, nget can be > 0 without
+ * any event, so check that portev_user was filled in.
+ *
+ * (Maybe it will be simplified; see thread
+ * http://mail.opensolaris.org
+ * /pipermail/networking-discuss/2009-August/011979.html
+ * This code will still work afterwards.)
+ */
+ rv = APR_SUCCESS;
+ break;
+ }
+ if (rv == ETIME) {
+ rv = APR_TIMEUP;
+ }
+ /* fall-through */
+ default:
+ *nget = 0;
+ }
+ }
+ else if (*nget == 0) {
+ rv = APR_TIMEUP;
+ }
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_cleanup(apr_pollset_t *pollset)
+{
+ close(pollset->p->port_fd);
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_create(apr_pollset_t *pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ apr_status_t rv = APR_SUCCESS;
+ pollset->p = apr_palloc(p, sizeof(apr_pollset_private_t));
+#if APR_HAS_THREADS
+ if (flags & APR_POLLSET_THREADSAFE &&
+ ((rv = apr_thread_mutex_create(&pollset->p->ring_lock,
+ APR_THREAD_MUTEX_DEFAULT,
+ p)) != APR_SUCCESS)) {
+ pollset->p = NULL;
+ return rv;
+ }
+#else
+ if (flags & APR_POLLSET_THREADSAFE) {
+ pollset->p = NULL;
+ return APR_ENOTIMPL;
+ }
+#endif
+ pollset->p->waiting = 0;
+
+ pollset->p->port_set = apr_palloc(p, size * sizeof(port_event_t));
+
+ pollset->p->port_fd = port_create();
+
+ if (pollset->p->port_fd < 0) {
+ pollset->p = NULL;
+ return apr_get_netos_error();
+ }
+
+ {
+ int flags;
+
+ if ((flags = fcntl(pollset->p->port_fd, F_GETFD)) == -1) {
+ rv = errno;
+ close(pollset->p->port_fd);
+ pollset->p = NULL;
+ return rv;
+ }
+
+ flags |= FD_CLOEXEC;
+ if (fcntl(pollset->p->port_fd, F_SETFD, flags) == -1) {
+ rv = errno;
+ close(pollset->p->port_fd);
+ pollset->p = NULL;
+ return rv;
+ }
+ }
+
+ pollset->p->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+
+ APR_RING_INIT(&pollset->p->query_ring, pfd_elem_t, link);
+ APR_RING_INIT(&pollset->p->add_ring, pfd_elem_t, link);
+ APR_RING_INIT(&pollset->p->free_ring, pfd_elem_t, link);
+ APR_RING_INIT(&pollset->p->dead_ring, pfd_elem_t, link);
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ apr_os_sock_t fd;
+ pfd_elem_t *elem;
+ int res;
+ apr_status_t rv = APR_SUCCESS;
+
+ pollset_lock_rings();
+
+ if (!APR_RING_EMPTY(&(pollset->p->free_ring), pfd_elem_t, link)) {
+ elem = APR_RING_FIRST(&(pollset->p->free_ring));
+ APR_RING_REMOVE(elem, link);
+ }
+ else {
+ elem = (pfd_elem_t *) apr_palloc(pollset->pool, sizeof(pfd_elem_t));
+ APR_RING_ELEM_INIT(elem, link);
+ elem->on_query_ring = 0;
+ }
+ elem->pfd = *descriptor;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ /* If another thread is polling, notify the kernel immediately; otherwise,
+ * wait until the next call to apr_pollset_poll().
+ */
+ if (apr_atomic_read32(&pollset->p->waiting)) {
+ res = port_associate(pollset->p->port_fd, PORT_SOURCE_FD, fd,
+ get_event(descriptor->reqevents), (void *)elem);
+
+ if (res < 0) {
+ rv = apr_get_netos_error();
+ APR_RING_INSERT_TAIL(&(pollset->p->free_ring), elem, pfd_elem_t, link);
+ }
+ else {
+ elem->on_query_ring = 1;
+ APR_RING_INSERT_TAIL(&(pollset->p->query_ring), elem, pfd_elem_t, link);
+ }
+ }
+ else {
+ APR_RING_INSERT_TAIL(&(pollset->p->add_ring), elem, pfd_elem_t, link);
+ }
+
+ pollset_unlock_rings();
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_remove(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ apr_os_sock_t fd;
+ pfd_elem_t *ep;
+ apr_status_t rv = APR_SUCCESS;
+ int res;
+ int err = 0;
+ int found;
+
+ pollset_lock_rings();
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ /* Search the add ring first. This ring is often shorter,
+ * and it often contains the descriptor being removed.
+ * (For the common scenario where apr_pollset_poll()
+ * returns activity for the descriptor and the descriptor
+ * is then removed from the pollset, it will have just
+ * been moved to the add ring by apr_pollset_poll().)
+ *
+ * If it is on the add ring, it isn't associated with the
+ * event port yet/anymore.
+ */
+ found = 0;
+ for (ep = APR_RING_FIRST(&(pollset->p->add_ring));
+ ep != APR_RING_SENTINEL(&(pollset->p->add_ring),
+ pfd_elem_t, link);
+ ep = APR_RING_NEXT(ep, link)) {
+
+ if (descriptor->desc.s == ep->pfd.desc.s) {
+ found = 1;
+ APR_RING_REMOVE(ep, link);
+ APR_RING_INSERT_TAIL(&(pollset->p->free_ring),
+ ep, pfd_elem_t, link);
+ break;
+ }
+ }
+
+ if (!found) {
+ res = port_dissociate(pollset->p->port_fd, PORT_SOURCE_FD, fd);
+
+ if (res < 0) {
+ /* The expected case for this failure is that another
+ * thread's call to port_getn() returned this fd and
+ * disassociated the fd from the event port, and
+ * impl_pollset_poll() is blocked on the ring lock,
+ * which this thread holds.
+ */
+ err = errno;
+ rv = APR_NOTFOUND;
+ }
+
+ for (ep = APR_RING_FIRST(&(pollset->p->query_ring));
+ ep != APR_RING_SENTINEL(&(pollset->p->query_ring),
+ pfd_elem_t, link);
+ ep = APR_RING_NEXT(ep, link)) {
+
+ if (descriptor->desc.s == ep->pfd.desc.s) {
+ APR_RING_REMOVE(ep, link);
+ ep->on_query_ring = 0;
+ APR_RING_INSERT_TAIL(&(pollset->p->dead_ring),
+ ep, pfd_elem_t, link);
+ if (ENOENT == err) {
+ rv = APR_SUCCESS;
+ }
+ break;
+ }
+ }
+ }
+
+ pollset_unlock_rings();
+
+ return rv;
+}
+
+static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ apr_os_sock_t fd;
+ int ret;
+ unsigned int nget, i;
+ apr_int32_t j;
+ pfd_elem_t *ep;
+ apr_status_t rv = APR_SUCCESS;
+
+ *num = 0;
+ nget = 1;
+
+ pollset_lock_rings();
+
+ apr_atomic_inc32(&pollset->p->waiting);
+
+ while (!APR_RING_EMPTY(&(pollset->p->add_ring), pfd_elem_t, link)) {
+ ep = APR_RING_FIRST(&(pollset->p->add_ring));
+ APR_RING_REMOVE(ep, link);
+
+ if (ep->pfd.desc_type == APR_POLL_SOCKET) {
+ fd = ep->pfd.desc.s->socketdes;
+ }
+ else {
+ fd = ep->pfd.desc.f->filedes;
+ }
+
+ ret = port_associate(pollset->p->port_fd, PORT_SOURCE_FD,
+ fd, get_event(ep->pfd.reqevents), ep);
+ if (ret < 0) {
+ rv = apr_get_netos_error();
+ APR_RING_INSERT_TAIL(&(pollset->p->free_ring), ep, pfd_elem_t, link);
+ break;
+ }
+
+ ep->on_query_ring = 1;
+ APR_RING_INSERT_TAIL(&(pollset->p->query_ring), ep, pfd_elem_t, link);
+ }
+
+ pollset_unlock_rings();
+
+ if (rv != APR_SUCCESS) {
+ apr_atomic_dec32(&pollset->p->waiting);
+ return rv;
+ }
+
+ rv = call_port_getn(pollset->p->port_fd, pollset->p->port_set,
+ pollset->nalloc, &nget, timeout);
+
+ /* decrease the waiting ASAP to reduce the window for calling
+ port_associate within apr_pollset_add() */
+ apr_atomic_dec32(&pollset->p->waiting);
+
+ pollset_lock_rings();
+
+ for (i = 0, j = 0; i < nget; i++) {
+ ep = (pfd_elem_t *)pollset->p->port_set[i].portev_user;
+ if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
+ ep->pfd.desc_type == APR_POLL_FILE &&
+ ep->pfd.desc.f == pollset->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollset->wakeup_pipe);
+ rv = APR_EINTR;
+ }
+ else {
+ pollset->p->result_set[j] = ep->pfd;
+ pollset->p->result_set[j].rtnevents =
+ get_revent(pollset->p->port_set[i].portev_events);
+ j++;
+ }
+ /* If the ring element is still on the query ring, move it
+ * to the add ring for re-association with the event port
+ * later. (It may have already been moved to the dead ring
+ * by a call to pollset_remove on another thread.)
+ */
+ if (ep->on_query_ring) {
+ APR_RING_REMOVE(ep, link);
+ ep->on_query_ring = 0;
+ APR_RING_INSERT_TAIL(&(pollset->p->add_ring), ep,
+ pfd_elem_t, link);
+ }
+ }
+ if ((*num = j)) { /* any event besides wakeup pipe? */
+ rv = APR_SUCCESS;
+ if (descriptors) {
+ *descriptors = pollset->p->result_set;
+ }
+ }
+
+ /* Shift all PFDs in the Dead Ring to the Free Ring */
+ APR_RING_CONCAT(&(pollset->p->free_ring), &(pollset->p->dead_ring), pfd_elem_t, link);
+
+ pollset_unlock_rings();
+
+ return rv;
+}
+
+static const apr_pollset_provider_t impl = {
+ impl_pollset_create,
+ impl_pollset_add,
+ impl_pollset_remove,
+ impl_pollset_poll,
+ impl_pollset_cleanup,
+ "port"
+};
+
+const apr_pollset_provider_t *apr_pollset_provider_port = &impl;
+
+static apr_status_t impl_pollcb_cleanup(apr_pollcb_t *pollcb)
+{
+ close(pollcb->fd);
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_create(apr_pollcb_t *pollcb,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ pollcb->fd = port_create();
+
+ if (pollcb->fd < 0) {
+ return apr_get_netos_error();
+ }
+
+ {
+ int flags;
+ apr_status_t rv;
+
+ if ((flags = fcntl(pollcb->fd, F_GETFD)) == -1) {
+ rv = errno;
+ close(pollcb->fd);
+ pollcb->fd = -1;
+ return rv;
+ }
+
+ flags |= FD_CLOEXEC;
+ if (fcntl(pollcb->fd, F_SETFD, flags) == -1) {
+ rv = errno;
+ close(pollcb->fd);
+ pollcb->fd = -1;
+ return rv;
+ }
+ }
+
+ pollcb->pollset.port = apr_palloc(p, size * sizeof(port_event_t));
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_add(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ int ret, fd;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ ret = port_associate(pollcb->fd, PORT_SOURCE_FD, fd,
+ get_event(descriptor->reqevents), descriptor);
+
+ if (ret == -1) {
+ return apr_get_netos_error();
+ }
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_remove(apr_pollcb_t *pollcb,
+ apr_pollfd_t *descriptor)
+{
+ int fd, ret;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ ret = port_dissociate(pollcb->fd, PORT_SOURCE_FD, fd);
+
+ if (ret < 0) {
+ return APR_NOTFOUND;
+ }
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollcb_poll(apr_pollcb_t *pollcb,
+ apr_interval_time_t timeout,
+ apr_pollcb_cb_t func,
+ void *baton)
+{
+ apr_status_t rv;
+ unsigned int nget = 1;
+
+ rv = call_port_getn(pollcb->fd, pollcb->pollset.port, pollcb->nalloc,
+ &nget, timeout);
+
+ if (nget) {
+ unsigned int i;
+
+ for (i = 0; i < nget; i++) {
+ apr_pollfd_t *pollfd = (apr_pollfd_t *)(pollcb->pollset.port[i].portev_user);
+
+ if ((pollcb->flags & APR_POLLSET_WAKEABLE) &&
+ pollfd->desc_type == APR_POLL_FILE &&
+ pollfd->desc.f == pollcb->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollcb->wakeup_pipe);
+ return APR_EINTR;
+ }
+
+ pollfd->rtnevents = get_revent(pollcb->pollset.port[i].portev_events);
+
+ rv = func(baton, pollfd);
+ if (rv) {
+ return rv;
+ }
+ rv = apr_pollcb_add(pollcb, pollfd);
+ }
+ }
+
+ return rv;
+}
+
+static const apr_pollcb_provider_t impl_cb = {
+ impl_pollcb_create,
+ impl_pollcb_add,
+ impl_pollcb_remove,
+ impl_pollcb_poll,
+ impl_pollcb_cleanup,
+ "port"
+};
+
+const apr_pollcb_provider_t *apr_pollcb_provider_port = &impl_cb;
+
+#endif /* HAVE_PORT_CREATE */
diff --git a/poll/unix/select.c b/poll/unix/select.c
new file mode 100644
index 0000000..51be3c1
--- /dev/null
+++ b/poll/unix/select.c
@@ -0,0 +1,449 @@
+/* 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
+/* POSIX defines 1024 for the FD_SETSIZE */
+#define FD_SETSIZE 1024
+#endif
+
+#include "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+
+#ifdef POLL_USES_SELECT
+
+APR_DECLARE(apr_status_t) apr_poll(apr_pollfd_t *aprset, int num,
+ apr_int32_t *nsds,
+ apr_interval_time_t timeout)
+{
+ fd_set readset, writeset, exceptset;
+ int rv, i;
+ int maxfd = -1;
+ struct timeval tv, *tvptr;
+#ifdef NETWARE
+ apr_datatype_e set_type = APR_NO_DESC;
+#endif
+
+#ifdef WIN32
+ /* On Win32, select() must be presented with at least one socket to
+ * poll on, or select() will return WSAEINVAL. So, we'll just
+ * short-circuit and bail now.
+ */
+ if (num == 0) {
+ (*nsds) = 0;
+ if (timeout > 0) {
+ apr_sleep(timeout);
+ return APR_TIMEUP;
+ }
+ return APR_SUCCESS;
+ }
+#endif
+
+ if (timeout < 0) {
+ tvptr = NULL;
+ }
+ else {
+ tv.tv_sec = (long) apr_time_sec(timeout);
+ tv.tv_usec = (long) apr_time_usec(timeout);
+ tvptr = &tv;
+ }
+
+ FD_ZERO(&readset);
+ FD_ZERO(&writeset);
+ FD_ZERO(&exceptset);
+
+ for (i = 0; i < num; i++) {
+ apr_os_sock_t fd;
+
+ aprset[i].rtnevents = 0;
+
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+#ifdef NETWARE
+ if (HAS_PIPES(set_type)) {
+ return APR_EBADF;
+ }
+ else {
+ set_type = APR_POLL_SOCKET;
+ }
+#endif
+ fd = aprset[i].desc.s->socketdes;
+ }
+ else if (aprset[i].desc_type == APR_POLL_FILE) {
+#if !APR_FILES_AS_SOCKETS
+ return APR_EBADF;
+#else
+#ifdef NETWARE
+ if (aprset[i].desc.f->is_pipe && !HAS_SOCKETS(set_type)) {
+ set_type = APR_POLL_FILE;
+ }
+ else
+ return APR_EBADF;
+#endif /* NETWARE */
+
+ fd = aprset[i].desc.f->filedes;
+
+#endif /* APR_FILES_AS_SOCKETS */
+ }
+ else {
+ break;
+ }
+#if !defined(WIN32) && !defined(NETWARE) /* socket sets handled with array of handles */
+ if (fd >= FD_SETSIZE) {
+ /* XXX invent new error code so application has a clue */
+ return APR_EBADF;
+ }
+#endif
+ if (aprset[i].reqevents & APR_POLLIN) {
+ FD_SET(fd, &readset);
+ }
+ if (aprset[i].reqevents & APR_POLLOUT) {
+ FD_SET(fd, &writeset);
+ }
+ if (aprset[i].reqevents &
+ (APR_POLLPRI | APR_POLLERR | APR_POLLHUP | APR_POLLNVAL)) {
+ FD_SET(fd, &exceptset);
+ }
+ if ((int) fd > maxfd) {
+ maxfd = (int) fd;
+ }
+ }
+
+#ifdef NETWARE
+ if (HAS_PIPES(set_type)) {
+ rv = pipe_select(maxfd + 1, &readset, &writeset, &exceptset, tvptr);
+ }
+ else {
+#endif
+
+ rv = select(maxfd + 1, &readset, &writeset, &exceptset, tvptr);
+
+#ifdef NETWARE
+ }
+#endif
+
+ (*nsds) = rv;
+ if ((*nsds) == 0) {
+ return APR_TIMEUP;
+ }
+ if ((*nsds) < 0) {
+ return apr_get_netos_error();
+ }
+
+ (*nsds) = 0;
+ for (i = 0; i < num; i++) {
+ apr_os_sock_t fd;
+
+ if (aprset[i].desc_type == APR_POLL_SOCKET) {
+ fd = aprset[i].desc.s->socketdes;
+ }
+ else if (aprset[i].desc_type == APR_POLL_FILE) {
+#if !APR_FILES_AS_SOCKETS
+ return APR_EBADF;
+#else
+ fd = aprset[i].desc.f->filedes;
+#endif
+ }
+ else {
+ break;
+ }
+ if (FD_ISSET(fd, &readset)) {
+ aprset[i].rtnevents |= APR_POLLIN;
+ }
+ if (FD_ISSET(fd, &writeset)) {
+ aprset[i].rtnevents |= APR_POLLOUT;
+ }
+ if (FD_ISSET(fd, &exceptset)) {
+ aprset[i].rtnevents |= APR_POLLERR;
+ }
+ if (aprset[i].rtnevents) {
+ (*nsds)++;
+ }
+ }
+
+ return APR_SUCCESS;
+}
+
+#endif /* POLL_USES_SELECT */
+
+struct apr_pollset_private_t
+{
+ fd_set readset, writeset, exceptset;
+ int maxfd;
+ apr_pollfd_t *query_set;
+ apr_pollfd_t *result_set;
+ apr_uint32_t flags;
+#ifdef NETWARE
+ int set_type;
+#endif
+};
+
+static apr_status_t impl_pollset_create(apr_pollset_t *pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ if (flags & APR_POLLSET_THREADSAFE) {
+ pollset->p = NULL;
+ return APR_ENOTIMPL;
+ }
+#ifdef FD_SETSIZE
+ if (size > FD_SETSIZE) {
+ pollset->p = NULL;
+ return APR_EINVAL;
+ }
+#endif
+ pollset->p = apr_palloc(p, sizeof(apr_pollset_private_t));
+ FD_ZERO(&(pollset->p->readset));
+ FD_ZERO(&(pollset->p->writeset));
+ FD_ZERO(&(pollset->p->exceptset));
+ pollset->p->maxfd = 0;
+#ifdef NETWARE
+ pollset->p->set_type = APR_NO_DESC;
+#endif
+ pollset->p->query_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+ pollset->p->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ apr_os_sock_t fd;
+
+ if (pollset->nelts == pollset->nalloc) {
+ return APR_ENOMEM;
+ }
+
+ pollset->p->query_set[pollset->nelts] = *descriptor;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+#ifdef NETWARE
+ /* NetWare can't handle mixed descriptor types in select() */
+ if (HAS_PIPES(pollset->p->set_type)) {
+ return APR_EBADF;
+ }
+ else {
+ pollset->p->set_type = APR_POLL_SOCKET;
+ }
+#endif
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+#if !APR_FILES_AS_SOCKETS
+ if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
+ descriptor->desc.f == pollset->wakeup_pipe[0])
+ fd = (apr_os_sock_t)descriptor->desc.f->filedes;
+ else
+ return APR_EBADF;
+#else
+#ifdef NETWARE
+ /* NetWare can't handle mixed descriptor types in select() */
+ if (descriptor->desc.f->is_pipe && !HAS_SOCKETS(pollset->p->set_type)) {
+ pollset->p->set_type = APR_POLL_FILE;
+ fd = descriptor->desc.f->filedes;
+ }
+ else {
+ return APR_EBADF;
+ }
+#else
+ fd = descriptor->desc.f->filedes;
+#endif
+#endif
+ }
+#if !defined(WIN32) && !defined(NETWARE) /* socket sets handled with array of handles */
+ if (fd >= FD_SETSIZE) {
+ /* XXX invent new error code so application has a clue */
+ return APR_EBADF;
+ }
+#endif
+ if (descriptor->reqevents & APR_POLLIN) {
+ FD_SET(fd, &(pollset->p->readset));
+ }
+ if (descriptor->reqevents & APR_POLLOUT) {
+ FD_SET(fd, &(pollset->p->writeset));
+ }
+ if (descriptor->reqevents &
+ (APR_POLLPRI | APR_POLLERR | APR_POLLHUP | APR_POLLNVAL)) {
+ FD_SET(fd, &(pollset->p->exceptset));
+ }
+ if ((int) fd > pollset->p->maxfd) {
+ pollset->p->maxfd = (int) fd;
+ }
+ pollset->nelts++;
+ return APR_SUCCESS;
+}
+
+static apr_status_t impl_pollset_remove(apr_pollset_t * pollset,
+ const apr_pollfd_t * descriptor)
+{
+ apr_uint32_t i;
+ apr_os_sock_t fd;
+
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+#if !APR_FILES_AS_SOCKETS
+ return APR_EBADF;
+#else
+ fd = descriptor->desc.f->filedes;
+#endif
+ }
+
+ for (i = 0; i < pollset->nelts; i++) {
+ if (descriptor->desc.s == pollset->p->query_set[i].desc.s) {
+ /* Found an instance of the fd: remove this and any other copies */
+ apr_uint32_t dst = i;
+ apr_uint32_t old_nelts = pollset->nelts;
+ pollset->nelts--;
+ for (i++; i < old_nelts; i++) {
+ if (descriptor->desc.s == pollset->p->query_set[i].desc.s) {
+ pollset->nelts--;
+ }
+ else {
+ pollset->p->query_set[dst] = pollset->p->query_set[i];
+ dst++;
+ }
+ }
+ FD_CLR(fd, &(pollset->p->readset));
+ FD_CLR(fd, &(pollset->p->writeset));
+ FD_CLR(fd, &(pollset->p->exceptset));
+ if (((int) fd == pollset->p->maxfd) && (pollset->p->maxfd > 0)) {
+ pollset->p->maxfd--;
+ }
+ return APR_SUCCESS;
+ }
+ }
+
+ return APR_NOTFOUND;
+}
+
+static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ int rs;
+ apr_uint32_t i, j;
+ struct timeval tv, *tvptr;
+ fd_set readset, writeset, exceptset;
+ apr_status_t rv = APR_SUCCESS;
+
+ *num = 0;
+
+#ifdef WIN32
+ /* On Win32, select() must be presented with at least one socket to
+ * poll on, or select() will return WSAEINVAL. So, we'll just
+ * short-circuit and bail now.
+ */
+ if (pollset->nelts == 0) {
+ if (timeout > 0) {
+ apr_sleep(timeout);
+ return APR_TIMEUP;
+ }
+ return APR_SUCCESS;
+ }
+#endif
+
+ if (timeout < 0) {
+ tvptr = NULL;
+ }
+ else {
+ tv.tv_sec = (long) apr_time_sec(timeout);
+ tv.tv_usec = (long) apr_time_usec(timeout);
+ tvptr = &tv;
+ }
+
+ memcpy(&readset, &(pollset->p->readset), sizeof(fd_set));
+ memcpy(&writeset, &(pollset->p->writeset), sizeof(fd_set));
+ memcpy(&exceptset, &(pollset->p->exceptset), sizeof(fd_set));
+
+#ifdef NETWARE
+ if (HAS_PIPES(pollset->p->set_type)) {
+ rs = pipe_select(pollset->p->maxfd + 1, &readset, &writeset, &exceptset,
+ tvptr);
+ }
+ else
+#endif
+ rs = select(pollset->p->maxfd + 1, &readset, &writeset, &exceptset,
+ tvptr);
+
+ if (rs < 0) {
+ return apr_get_netos_error();
+ }
+ if (rs == 0) {
+ return APR_TIMEUP;
+ }
+ j = 0;
+ for (i = 0; i < pollset->nelts; i++) {
+ apr_os_sock_t fd;
+ if (pollset->p->query_set[i].desc_type == APR_POLL_SOCKET) {
+ fd = pollset->p->query_set[i].desc.s->socketdes;
+ }
+ else {
+ if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
+ pollset->p->query_set[i].desc.f == pollset->wakeup_pipe[0]) {
+ apr_poll_drain_wakeup_pipe(pollset->wakeup_pipe);
+ rv = APR_EINTR;
+ continue;
+ }
+ else {
+#if !APR_FILES_AS_SOCKETS
+ return APR_EBADF;
+#else
+ fd = pollset->p->query_set[i].desc.f->filedes;
+#endif
+ }
+ }
+ if (FD_ISSET(fd, &readset) || FD_ISSET(fd, &writeset) ||
+ FD_ISSET(fd, &exceptset)) {
+ pollset->p->result_set[j] = pollset->p->query_set[i];
+ pollset->p->result_set[j].rtnevents = 0;
+ if (FD_ISSET(fd, &readset)) {
+ pollset->p->result_set[j].rtnevents |= APR_POLLIN;
+ }
+ if (FD_ISSET(fd, &writeset)) {
+ pollset->p->result_set[j].rtnevents |= APR_POLLOUT;
+ }
+ if (FD_ISSET(fd, &exceptset)) {
+ pollset->p->result_set[j].rtnevents |= APR_POLLERR;
+ }
+ j++;
+ }
+ }
+ if (((*num) = j) != 0)
+ rv = APR_SUCCESS;
+
+ if (descriptors)
+ *descriptors = pollset->p->result_set;
+ return rv;
+}
+
+static const apr_pollset_provider_t impl = {
+ impl_pollset_create,
+ impl_pollset_add,
+ impl_pollset_remove,
+ impl_pollset_poll,
+ NULL,
+ "select"
+};
+
+const apr_pollset_provider_t *apr_pollset_provider_select = &impl;
diff --git a/poll/unix/wakeup.c b/poll/unix/wakeup.c
new file mode 100644
index 0000000..6c3dcd6
--- /dev/null
+++ b/poll/unix/wakeup.c
@@ -0,0 +1,152 @@
+/* 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 "apr.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+#include "apr_arch_inherit.h"
+
+#if !APR_FILES_AS_SOCKETS
+
+#ifdef WIN32
+
+apr_status_t apr_poll_create_wakeup_pipe(apr_pool_t *pool, apr_pollfd_t *pfd,
+ apr_file_t **wakeup_pipe)
+{
+ apr_status_t rv;
+
+ if ((rv = apr_file_socket_pipe_create(&wakeup_pipe[0], &wakeup_pipe[1],
+ pool)) != APR_SUCCESS)
+ return rv;
+
+ pfd->reqevents = APR_POLLIN;
+ pfd->desc_type = APR_POLL_FILE;
+ pfd->desc.f = wakeup_pipe[0];
+ return APR_SUCCESS;
+}
+
+apr_status_t apr_poll_close_wakeup_pipe(apr_file_t **wakeup_pipe)
+{
+ apr_status_t rv0 = APR_SUCCESS;
+ apr_status_t rv1 = APR_SUCCESS;
+
+ /* Close both sides of the wakeup pipe */
+ if (wakeup_pipe[0]) {
+ rv0 = apr_file_socket_pipe_close(wakeup_pipe[0]);
+ wakeup_pipe[0] = NULL;
+ }
+ if (wakeup_pipe[1]) {
+ rv1 = apr_file_socket_pipe_close(wakeup_pipe[1]);
+ wakeup_pipe[1] = NULL;
+ }
+ return rv0 ? rv0 : rv1;
+}
+
+#else /* !WIN32 */
+
+apr_status_t apr_poll_create_wakeup_pipe(apr_pollfd_t *pfd, apr_file_t **wakeup_pipe)
+{
+ return APR_ENOTIMPL;
+}
+
+apr_status_t apr_poll_close_wakeup_pipe(apr_file_t **wakeup_pipe)
+{
+ return APR_ENOTIMPL;
+}
+
+#endif /* !WIN32 */
+
+#else /* APR_FILES_AS_SOCKETS */
+
+apr_status_t apr_poll_create_wakeup_pipe(apr_pool_t *pool, apr_pollfd_t *pfd,
+ apr_file_t **wakeup_pipe)
+{
+ apr_status_t rv;
+
+ if ((rv = apr_file_pipe_create_ex(&wakeup_pipe[0], &wakeup_pipe[1],
+ APR_WRITE_BLOCK,
+ pool)) != APR_SUCCESS)
+ return rv;
+
+ pfd->p = pool;
+ pfd->reqevents = APR_POLLIN;
+ pfd->desc_type = APR_POLL_FILE;
+ pfd->desc.f = wakeup_pipe[0];
+
+ {
+ int flags;
+
+ if ((flags = fcntl(wakeup_pipe[0]->filedes, F_GETFD)) == -1)
+ return errno;
+
+ flags |= FD_CLOEXEC;
+ if (fcntl(wakeup_pipe[0]->filedes, F_SETFD, flags) == -1)
+ return errno;
+ }
+ {
+ int flags;
+
+ if ((flags = fcntl(wakeup_pipe[1]->filedes, F_GETFD)) == -1)
+ return errno;
+
+ flags |= FD_CLOEXEC;
+ if (fcntl(wakeup_pipe[1]->filedes, F_SETFD, flags) == -1)
+ return errno;
+ }
+
+ return APR_SUCCESS;
+}
+
+apr_status_t apr_poll_close_wakeup_pipe(apr_file_t **wakeup_pipe)
+{
+ apr_status_t rv0 = APR_SUCCESS;
+ apr_status_t rv1 = APR_SUCCESS;
+
+ /* Close both sides of the wakeup pipe */
+ if (wakeup_pipe[0]) {
+ rv0 = apr_file_close(wakeup_pipe[0]);
+ wakeup_pipe[0] = NULL;
+ }
+ if (wakeup_pipe[1]) {
+ rv1 = apr_file_close(wakeup_pipe[1]);
+ wakeup_pipe[1] = NULL;
+ }
+ return rv0 ? rv0 : rv1;
+}
+
+#endif /* APR_FILES_AS_SOCKETS */
+
+/* Read and discard whatever is in the wakeup pipe.
+ */
+void apr_poll_drain_wakeup_pipe(apr_file_t **wakeup_pipe)
+{
+ char rb[512];
+ apr_size_t nr = sizeof(rb);
+
+ while (apr_file_read(wakeup_pipe[0], rb, &nr) == APR_SUCCESS) {
+ /* Although we write just one byte to the other end of the pipe
+ * during wakeup, multiple threads could call the wakeup.
+ * So simply drain out from the input side of the pipe all
+ * the data.
+ */
+ if (nr != sizeof(rb))
+ break;
+ }
+}
diff --git a/poll/unix/z_asio.c b/poll/unix/z_asio.c
new file mode 100644
index 0000000..48b531c
--- /dev/null
+++ b/poll/unix/z_asio.c
@@ -0,0 +1,782 @@
+/* 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 implementation is based on a design by John Brooks (IBM Pok) which uses
+ * the z/OS sockets async i/o facility. When a
+ * socket is added to the pollset, an async poll is issued for that individual
+ * socket. It specifies that the kernel should send an IPC message when the
+ * socket becomes ready. The IPC messages are sent to a single message queue
+ * that is part of the pollset. apr_pollset_poll waits on the arrival of IPC
+ * messages or the specified timeout.
+ *
+ * Since z/OS does not support async i/o for pipes or files at present, this
+ * implementation falls back to using ordinary poll() when
+ * APR_POLLSET_THREADSAFE is unset.
+ *
+ * Greg Ames
+ * April 2012
+ */
+
+#include "apr.h"
+#include "apr_hash.h"
+#include "apr_poll.h"
+#include "apr_time.h"
+#include "apr_portable.h"
+#include "apr_arch_inherit.h"
+#include "apr_arch_file_io.h"
+#include "apr_arch_networkio.h"
+#include "apr_arch_poll_private.h"
+
+#ifdef HAVE_AIO_MSGQ
+
+#include <sys/msg.h> /* msgget etc */
+#include <time.h> /* timestruct */
+#include <poll.h> /* pollfd */
+#include <limits.h> /* MAX_INT */
+
+struct apr_pollset_private_t
+{
+ int msg_q; /* IPC message queue. The z/OS kernel sends messages
+ * to this queue when our async polls on individual
+ * file descriptors complete
+ */
+ apr_pollfd_t *result_set;
+ apr_uint32_t size;
+
+#if APR_HAS_THREADS
+ /* A thread mutex to protect operations on the rings and the hash */
+ apr_thread_mutex_t *ring_lock;
+#endif
+
+ /* A hash of all active elements used for O(1) _remove operations */
+ apr_hash_t *elems;
+
+ APR_RING_HEAD(ready_ring_t, asio_elem_t) ready_ring;
+ APR_RING_HEAD(prior_ready_ring_t, asio_elem_t) prior_ready_ring;
+ APR_RING_HEAD(free_ring_t, asio_elem_t) free_ring;
+
+ /* for pipes etc with no asio */
+ struct pollfd *pollset;
+ apr_pollfd_t *query_set;
+};
+
+typedef enum {
+ ASIO_INIT = 0,
+ ASIO_REMOVED,
+ ASIO_COMPLETE
+} asio_state_e;
+
+typedef struct asio_elem_t asio_elem_t;
+
+struct asio_msgbuf_t {
+ long msg_type; /* must be > 0 */
+ asio_elem_t *msg_elem;
+};
+
+struct asio_elem_t
+{
+ APR_RING_ENTRY(asio_elem_t) link;
+ apr_pollfd_t pfd;
+ struct pollfd os_pfd;
+ struct aiocb a;
+ asio_state_e state;
+ struct asio_msgbuf_t msg;
+};
+
+#define DEBUG 0
+
+/* DEBUG settings: 0 - no debug messages at all,
+ * 1 - should not occur messages,
+ * 2 - apr_pollset_* entry and exit messages,
+ * 3 - state changes, memory usage,
+ * 4 - z/OS, APR, and internal calls,
+ * 5 - everything else except the timer pop path,
+ * 6 - everything, including the Event 1 sec timer pop path
+ *
+ * each DEBUG level includes all messages produced by lower numbered levels
+ */
+
+#if DEBUG
+
+#include <assert.h>
+#include <unistd.h> /* getpid */
+
+#define DBG_BUFF char dbg_msg_buff[256];
+
+#define DBG_TEST(lvl) if (lvl <= DEBUG) {
+
+#define DBG_CORE(msg) sprintf(dbg_msg_buff, "% 8d " __FUNCTION__ \
+ " " msg, getpid()), \
+ fprintf(stderr, "%s", dbg_msg_buff);
+#define DBG_CORE1(msg, var1) sprintf(dbg_msg_buff, "% 8d " __FUNCTION__ \
+ " " msg, getpid(), var1), \
+ fprintf(stderr, "%s", dbg_msg_buff);
+#define DBG_CORE2(msg, var1, var2) sprintf(dbg_msg_buff, "% 8d " __FUNCTION__ \
+ " " msg, getpid(), var1, var2), \
+ fprintf(stderr, "%s", dbg_msg_buff);
+#define DBG_CORE3(msg, var1, var2, var3) \
+ sprintf(dbg_msg_buff, "% 8d " __FUNCTION__ \
+ " " msg, getpid(), var1, var2, var3), \
+ fprintf(stderr, "%s", dbg_msg_buff);
+#define DBG_CORE4(msg, var1, var2, var3, var4) \
+ sprintf(dbg_msg_buff, "% 8d " __FUNCTION__ \
+ " " msg, getpid(), var1, var2, var3, var4),\
+ fprintf(stderr, "%s", dbg_msg_buff);
+
+#define DBG_END }
+
+#define DBG(lvl, msg) DBG_TEST(lvl) \
+ DBG_CORE(msg) \
+ DBG_END
+
+#define DBG1(lvl, msg, var1) DBG_TEST(lvl) \
+ DBG_CORE1(msg, var1) \
+ DBG_END
+
+#define DBG2(lvl, msg, var1, var2) DBG_TEST(lvl) \
+ DBG_CORE2(msg, var1, var2) \
+ DBG_END
+
+#define DBG3(lvl, msg, var1, var2, var3) \
+ DBG_TEST(lvl) \
+ DBG_CORE3(msg, var1, var2, var3) \
+ DBG_END
+
+#define DBG4(lvl, msg, var1, var2, var3, var4) \
+ DBG_TEST(lvl) \
+ DBG_CORE4(msg, var1, var2, var3, var4) \
+ DBG_END
+
+#else /* DEBUG is 0 */
+#define DBG_BUFF
+#define DBG(lvl, msg) ((void)0)
+#define DBG1(lvl, msg, var1) ((void)0)
+#define DBG2(lvl, msg, var1, var2) ((void)0)
+#define DBG3(lvl, msg, var1, var2, var3) ((void)0)
+#define DBG4(lvl, msg, var1, var2, var3, var4) ((void)0)
+
+#endif /* DEBUG */
+
+static int asyncio(struct aiocb *a)
+{
+ DBG_BUFF
+ int rv;
+
+#ifdef _LP64
+#define AIO BPX4AIO
+#else
+#define AIO BPX1AIO
+#endif
+
+ AIO(sizeof(struct aiocb), a, &rv, &errno, __err2ad());
+ DBG2(4, "BPX4AIO aiocb %p rv %d\n",
+ a, rv);
+#ifdef DEBUG
+ if (rv < 0) {
+ DBG2(4, "errno %d errnojr %08x\n",
+ errno, *__err2ad());
+ }
+#endif
+ return rv;
+}
+
+static apr_int16_t get_event(apr_int16_t event)
+{
+ DBG_BUFF
+ apr_int16_t rv = 0;
+ DBG(4, "entered\n");
+
+ if (event & APR_POLLIN)
+ rv |= POLLIN;
+ if (event & APR_POLLPRI)
+ rv |= POLLPRI;
+ if (event & APR_POLLOUT)
+ rv |= POLLOUT;
+ if (event & APR_POLLERR)
+ rv |= POLLERR;
+ if (event & APR_POLLHUP)
+ rv |= POLLHUP;
+ if (event & APR_POLLNVAL)
+ rv |= POLLNVAL;
+
+ DBG(4, "exiting\n");
+ return rv;
+}
+
+static apr_int16_t get_revent(apr_int16_t event)
+{
+ DBG_BUFF
+ apr_int16_t rv = 0;
+ DBG(4, "entered\n");
+
+ if (event & POLLIN)
+ rv |= APR_POLLIN;
+ if (event & POLLPRI)
+ rv |= APR_POLLPRI;
+ if (event & POLLOUT)
+ rv |= APR_POLLOUT;
+ if (event & POLLERR)
+ rv |= APR_POLLERR;
+ if (event & POLLHUP)
+ rv |= APR_POLLHUP;
+ if (event & POLLNVAL)
+ rv |= APR_POLLNVAL;
+
+ DBG(4, "exiting\n");
+ return rv;
+}
+
+static apr_status_t asio_pollset_cleanup(apr_pollset_t *pollset)
+{
+ DBG_BUFF
+ int rv;
+
+ DBG(4, "entered\n");
+ if (pollset->flags & APR_POLLSET_THREADSAFE) {
+ rv = msgctl(pollset->p->msg_q, IPC_RMID, NULL);
+ DBG1(4, "asio_pollset_cleanup: msgctl(IPC_RMID) returned %d\n", rv);
+ }
+
+ return rv;
+}
+
+static apr_status_t asio_pollset_create(apr_pollset_t *pollset,
+ apr_uint32_t size,
+ apr_pool_t *p,
+ apr_uint32_t flags)
+{
+ DBG_BUFF
+ apr_status_t rv;
+ apr_pollset_private_t *priv;
+
+ DBG1(2, "entered, flags: %x\n", flags);
+
+ priv = pollset->p = apr_pcalloc(p, sizeof(*priv));
+
+ if (flags & APR_POLLSET_THREADSAFE) {
+#if APR_HAS_THREADS
+ if ((rv = apr_thread_mutex_create(&(priv->ring_lock),
+ APR_THREAD_MUTEX_DEFAULT,
+ p)) != APR_SUCCESS) {
+ DBG1(1, "apr_thread_mutex_create returned %d\n", rv);
+ pollset->p = NULL;
+ return rv;
+ }
+ rv = msgget(IPC_PRIVATE, S_IWUSR+S_IRUSR); /* user r/w perms */
+ if (rv < 0) {
+#if DEBUG
+ perror(__FUNCTION__ " msgget returned < 0 ");
+#endif
+ pollset->p = NULL;
+ return rv;
+ }
+
+ DBG2(4, "pollset %p msgget was OK, rv=%d\n", pollset, rv);
+ priv->msg_q = rv;
+ priv->elems = apr_hash_make(p);
+
+ APR_RING_INIT(&priv->free_ring, asio_elem_t, link);
+ APR_RING_INIT(&priv->prior_ready_ring, asio_elem_t, link);
+
+#else /* APR doesn't have threads but caller wants a threadsafe pollset */
+ pollset->p = NULL;
+ return APR_ENOTIMPL;
+#endif
+
+ } else { /* APR_POLLSET_THREADSAFE not set, i.e. no async i/o,
+ * init fields only needed in old style pollset
+ */
+
+ priv->pollset = apr_palloc(p, size * sizeof(struct pollfd));
+ priv->query_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+
+ if ((!priv->pollset) || (!priv->query_set)) {
+ pollset->p = NULL;
+ return APR_ENOMEM;
+ }
+ }
+
+ pollset->nelts = 0;
+ pollset->flags = flags;
+ pollset->pool = p;
+ priv->size = size;
+ priv->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t));
+ if (!priv->result_set) {
+ if (flags & APR_POLLSET_THREADSAFE) {
+ msgctl(priv->msg_q, IPC_RMID, NULL);
+ }
+ pollset->p = NULL;
+ return APR_ENOMEM;
+ }
+
+ DBG2(2, "exiting, pollset: %p, type: %s\n",
+ pollset,
+ flags & APR_POLLSET_THREADSAFE ? "async" : "POSIX");
+
+
+ return APR_SUCCESS;
+
+} /* end of asio_pollset_create */
+
+static apr_status_t posix_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ DBG_BUFF
+ int fd;
+ apr_pool_t *p = pollset->pool;
+ apr_pollset_private_t *priv = pollset->p;
+
+ DBG(4, "entered\n");
+
+ if (pollset->nelts == priv->size) {
+ return APR_ENOMEM;
+ }
+
+ priv->query_set[pollset->nelts] = *descriptor;
+ if (descriptor->desc_type == APR_POLL_SOCKET) {
+ fd = descriptor->desc.s->socketdes;
+ }
+ else {
+ fd = descriptor->desc.f->filedes;
+ }
+
+ priv->pollset[pollset->nelts].fd = fd;
+
+ priv->pollset[pollset->nelts].events =
+ get_event(descriptor->reqevents);
+
+ pollset->nelts++;
+
+ DBG2(4, "exiting, fd %d added to pollset %p\n", fd, pollset);
+
+ return APR_SUCCESS;
+} /* end of posix_add */
+
+
+static apr_status_t asio_pollset_add(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ DBG_BUFF
+ asio_elem_t *elem;
+ apr_status_t rv = APR_SUCCESS;
+ apr_pollset_private_t *priv = pollset->p;
+
+ pollset_lock_rings();
+ DBG(2, "entered\n");
+
+ if (pollset->flags & APR_POLLSET_THREADSAFE) {
+
+ if (!APR_RING_EMPTY(&(priv->free_ring), asio_elem_t, link)) {
+ elem = APR_RING_FIRST(&(priv->free_ring));
+ APR_RING_REMOVE(elem, link);
+ DBG1(3, "used recycled memory at %08p\n", elem);
+ elem->state = ASIO_INIT;
+ elem->a.aio_cflags = 0;
+ }
+ else {
+ elem = (asio_elem_t *) apr_pcalloc(pollset->pool, sizeof(asio_elem_t));
+ DBG1(3, "alloced new memory at %08p\n", elem);
+
+ elem->a.aio_notifytype = AIO_MSGQ;
+ elem->a.aio_msgev_qid = priv->msg_q;
+ DBG1(5, "aio_msgev_quid = %d \n", elem->a.aio_msgev_qid);
+ elem->a.aio_msgev_size = sizeof(asio_elem_t *);
+ elem->a.aio_msgev_flag = 0; /* wait if queue is full */
+ elem->a.aio_msgev_addr = &(elem->msg);
+ elem->a.aio_buf = &(elem->os_pfd);
+ elem->a.aio_nbytes = 1; /* number of pfds to poll */
+ elem->msg.msg_type = 1;
+ elem->msg.msg_elem = elem;
+ }
+
+ /* z/OS only supports async I/O for sockets for now */
+ elem->os_pfd.fd = descriptor->desc.s->socketdes;
+
+ APR_RING_ELEM_INIT(elem, link);
+ elem->a.aio_cmd = AIO_SELPOLL;
+ elem->a.aio_cflags &= ~AIO_OK2COMPIMD; /* not OK to complete inline*/
+ elem->pfd = *descriptor;
+ elem->os_pfd.events = get_event(descriptor->reqevents);
+
+ if (0 != asyncio(&elem->a)) {
+ rv = errno;
+ DBG3(4, "pollset %p asio failed fd %d, errno %p\n",
+ pollset, elem->os_pfd.fd, rv);
+#if DEBUG
+ perror(__FUNCTION__ " asio failure");
+#endif
+ }
+ else {
+ DBG2(4, "good asio call, adding fd %d to pollset %p\n",
+ elem->os_pfd.fd, pollset);
+
+ pollset->nelts++;
+ apr_hash_set(priv->elems, &(elem->os_pfd.fd), sizeof(int), elem);
+ }
+ }
+ else {
+ /* APR_POLLSET_THREADSAFE isn't set. use POSIX poll in case
+ * pipes or files are used with this pollset
+ */
+
+ rv = posix_add(pollset, descriptor);
+ }
+
+ DBG1(2, "exiting, rv = %d\n", rv);
+
+ pollset_unlock_rings();
+ return rv;
+} /* end of asio_pollset_add */
+
+static posix_remove(apr_pollset_t *pollset, const apr_pollfd_t *descriptor)
+{
+ DBG_BUFF
+ apr_uint32_t i;
+ apr_pollset_private_t *priv = pollset->p;
+
+ DBG(4, "entered\n");
+ for (i = 0; i < pollset->nelts; i++) {
+ if (descriptor->desc.s == priv->query_set[i].desc.s) {
+ /* Found an instance of the fd: remove this and any other copies */
+ apr_uint32_t dst = i;
+ apr_uint32_t old_nelts = pollset->nelts;
+ pollset->nelts--;
+ for (i++; i < old_nelts; i++) {
+ if (descriptor->desc.s == priv->query_set[i].desc.s) {
+ pollset->nelts--;
+ }
+ else {
+ priv->pollset[dst] = priv->pollset[i];
+ priv->query_set[dst] = priv->query_set[i];
+ dst++;
+ }
+ }
+ DBG(4, "returning OK\n");
+ return APR_SUCCESS;
+ }
+ }
+
+ DBG(1, "returning APR_NOTFOUND\n");
+ return APR_NOTFOUND;
+
+} /* end of posix_remove */
+
+static apr_status_t asio_pollset_remove(apr_pollset_t *pollset,
+ const apr_pollfd_t *descriptor)
+{
+ DBG_BUFF
+ asio_elem_t *elem;
+ apr_status_t rv = APR_SUCCESS;
+ apr_pollset_private_t *priv = pollset->p;
+ /* AIO_CANCEL is synchronous, so autodata works fine. */
+ struct aiocb cancel_a = {0};
+
+ int fd;
+
+ DBG(2, "entered\n");
+
+ if (!(pollset->flags & APR_POLLSET_THREADSAFE)) {
+ return posix_remove(pollset, descriptor);
+ }
+
+ pollset_lock_rings();
+
+#if DEBUG
+ assert(descriptor->desc_type == APR_POLL_SOCKET);
+#endif
+ /* zOS 1.12 doesn't support files for async i/o */
+ fd = descriptor->desc.s->socketdes;
+
+ elem = apr_hash_get(priv->elems, &(fd), sizeof(int));
+ if (elem == NULL) {
+ DBG1(1, "couldn't find fd %d\n", fd);
+ rv = APR_NOTFOUND;
+ } else {
+ DBG1(5, "hash found fd %d\n", fd);
+ /* delete this fd from the hash */
+ apr_hash_set(priv->elems, &(fd), sizeof(int), NULL);
+
+ if (elem->state == ASIO_INIT) {
+ /* asyncio call to cancel */
+ cancel_a.aio_cmd = AIO_CANCEL;
+ cancel_a.aio_buf = &elem->a; /* point to original aiocb */
+
+ cancel_a.aio_cflags = 0;
+ cancel_a.aio_cflags2 = 0;
+
+ /* we want the original aiocb to show up on the pollset message queue
+ * before recycling its memory to eliminate race conditions
+ */
+
+ rv = asyncio(&cancel_a);
+ DBG1(4, "asyncio returned %d\n", rv);
+
+#if DEBUG
+ assert(rv == 1);
+#endif
+ }
+ elem->state = ASIO_REMOVED;
+ rv = APR_SUCCESS;
+ }
+
+ DBG1(2, "exiting, rv: %d\n", rv);
+
+ pollset_unlock_rings();
+
+ return rv;
+} /* end of asio_pollset_remove */
+
+static posix_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ DBG_BUFF
+ int rv;
+ apr_uint32_t i, j;
+ apr_pollset_private_t *priv = pollset->p;
+
+ DBG(4, "entered\n");
+
+ if (timeout > 0) {
+ timeout /= 1000;
+ }
+ rv = poll(priv->pollset, pollset->nelts, timeout);
+ (*num) = rv;
+ if (rv < 0) {
+ return apr_get_netos_error();
+ }
+ if (rv == 0) {
+ return APR_TIMEUP;
+ }
+ j = 0;
+ for (i = 0; i < pollset->nelts; i++) {
+ if (priv->pollset[i].revents != 0) {
+ priv->result_set[j] = priv->query_set[i];
+ priv->result_set[j].rtnevents =
+ get_revent(priv->pollset[i].revents);
+ j++;
+ }
+ }
+ if (descriptors)
+ *descriptors = priv->result_set;
+
+ DBG(4, "exiting ok\n");
+ return APR_SUCCESS;
+
+} /* end of posix_poll */
+
+static process_msg(apr_pollset_t *pollset, struct asio_msgbuf_t *msg)
+{
+ DBG_BUFF
+ asio_elem_t *elem = msg->msg_elem;
+
+ switch(elem->state) {
+ case ASIO_REMOVED:
+ DBG2(5, "for cancelled elem, recycling memory - elem %08p, fd %d\n",
+ elem, elem->os_pfd.fd);
+ APR_RING_INSERT_TAIL(&(pollset->p->free_ring), elem,
+ asio_elem_t, link);
+ break;
+ case ASIO_INIT:
+ DBG2(4, "adding to ready ring: elem %08p, fd %d\n",
+ elem, elem->os_pfd.fd);
+ elem->state = ASIO_COMPLETE;
+ APR_RING_INSERT_TAIL(&(pollset->p->ready_ring), elem,
+ asio_elem_t, link);
+ break;
+ default:
+ DBG3(1, "unexpected state: elem %08p, fd %d, state %d\n",
+ elem, elem->os_pfd.fd, elem->state);
+#if DEBUG
+ assert(0);
+#endif
+ }
+}
+
+static apr_status_t asio_pollset_poll(apr_pollset_t *pollset,
+ apr_interval_time_t timeout,
+ apr_int32_t *num,
+ const apr_pollfd_t **descriptors)
+{
+ DBG_BUFF
+ int i, ret;
+ asio_elem_t *elem, *next_elem;
+ struct asio_msgbuf_t msg_buff;
+ struct timespec tv;
+ apr_status_t rv = APR_SUCCESS;
+ apr_pollset_private_t *priv = pollset->p;
+
+ DBG(6, "entered\n"); /* chatty - traces every second w/Event */
+
+ if ((pollset->flags & APR_POLLSET_THREADSAFE) == 0 ) {
+ return posix_poll(pollset, timeout, num, descriptors);
+ }
+
+ pollset_lock_rings();
+ APR_RING_INIT(&(priv->ready_ring), asio_elem_t, link);
+
+ while (!APR_RING_EMPTY(&(priv->prior_ready_ring), asio_elem_t, link)) {
+ elem = APR_RING_FIRST(&(priv->prior_ready_ring));
+ DBG3(5, "pollset %p elem %p fd %d on prior ready ring\n",
+ pollset,
+ elem,
+ elem->os_pfd.fd);
+
+ APR_RING_REMOVE(elem, link);
+
+ /*
+ * since USS does not remember what's in our pollset, we have
+ * to re-add fds which have not been apr_pollset_remove'd
+ *
+ * there may have been too many ready fd's to return in the
+ * result set last time. re-poll inline for both cases
+ */
+
+ if (elem->state == ASIO_REMOVED) {
+
+ /*
+ * async i/o is done since it was found on prior_ready
+ * the state says the caller is done with it too
+ * so recycle the elem
+ */
+
+ APR_RING_INSERT_TAIL(&(priv->free_ring), elem,
+ asio_elem_t, link);
+ continue; /* do not re-add if it has been _removed */
+ }
+
+ elem->state = ASIO_INIT;
+ elem->a.aio_cflags = AIO_OK2COMPIMD;
+
+ if (0 != (ret = asyncio(&elem->a))) {
+ if (ret == 1) {
+ DBG(4, "asyncio() completed inline\n");
+ /* it's ready now */
+ elem->state = ASIO_COMPLETE;
+ APR_RING_INSERT_TAIL(&(priv->ready_ring), elem, asio_elem_t,
+ link);
+ }
+ else {
+ DBG2(1, "asyncio() failed, ret: %d, errno: %d\n",
+ ret, errno);
+ pollset_unlock_rings();
+ return errno;
+ }
+ }
+ DBG1(4, "asyncio() completed rc %d\n", ret);
+ }
+
+ DBG(6, "after prior ready loop\n"); /* chatty w/timeouts, hence 6 */
+
+ /* Gather async poll completions that have occurred since the last call */
+ while (0 < msgrcv(priv->msg_q, &msg_buff, sizeof(asio_elem_t *), 0,
+ IPC_NOWAIT)) {
+ process_msg(pollset, &msg_buff);
+ }
+
+ /* Suspend if nothing is ready yet. */
+ if (APR_RING_EMPTY(&(priv->ready_ring), asio_elem_t, link)) {
+
+ if (timeout >= 0) {
+ tv.tv_sec = apr_time_sec(timeout);
+ tv.tv_nsec = apr_time_usec(timeout) * 1000;
+ } else {
+ tv.tv_sec = INT_MAX; /* block until something is ready */
+ }
+
+ DBG2(6, "nothing on the ready ring "
+ "- blocking for %d seconds %d ns\n",
+ tv.tv_sec, tv.tv_nsec);
+
+ pollset_unlock_rings(); /* allow other apr_pollset_* calls while blocked */
+
+ if (0 >= (ret = __msgrcv_timed(priv->msg_q, &msg_buff,
+ sizeof(asio_elem_t *), 0, NULL, &tv))) {
+#if DEBUG
+ if (errno == EAGAIN) {
+ DBG(6, "__msgrcv_timed timed out\n"); /* timeout path, so 6 */
+ }
+ else {
+ DBG(1, "__msgrcv_timed failed!\n");
+ }
+#endif
+ return (errno == EAGAIN) ? APR_TIMEUP : errno;
+ }
+
+ pollset_lock_rings();
+
+ process_msg(pollset, &msg_buff);
+ }
+
+ APR_RING_INIT(&priv->prior_ready_ring, asio_elem_t, link);
+
+ (*num) = 0;
+ elem = APR_RING_FIRST(&(priv->ready_ring));
+
+ for (i = 0;
+
+ i < priv->size
+ && elem != APR_RING_SENTINEL(&(priv->ready_ring), asio_elem_t, link);
+ i++) {
+ DBG2(5, "ready ring: elem %08p, fd %d\n", elem, elem->os_pfd.fd);
+
+ priv->result_set[i] = elem->pfd;
+ priv->result_set[i].rtnevents
+ = get_revent(elem->os_pfd.revents);
+ (*num)++;
+
+ elem = APR_RING_NEXT(elem, link);
+
+#if DEBUG
+ if (elem == APR_RING_SENTINEL(&(priv->ready_ring), asio_elem_t, link)) {
+ DBG(5, "end of ready ring reached\n");
+ }
+#endif
+ }
+
+ if (descriptors) {
+ *descriptors = priv->result_set;
+ }
+
+ /* if the result size is too small, remember which descriptors
+ * haven't had results reported yet. we will look
+ * at these descriptors on the next apr_pollset_poll call
+ */
+
+ APR_RING_CONCAT(&priv->prior_ready_ring, &(priv->ready_ring), asio_elem_t, link);
+
+ DBG1(2, "exiting, rv = %d\n", rv);
+
+ pollset_unlock_rings();
+
+ return rv;
+} /* end of asio_pollset_poll */
+
+static const apr_pollset_provider_t impl = {
+ asio_pollset_create,
+ asio_pollset_add,
+ asio_pollset_remove,
+ asio_pollset_poll,
+ asio_pollset_cleanup,
+ "asio"
+};
+
+const apr_pollset_provider_t *apr_pollset_provider_aio_msgq = &impl;
+
+#endif /* HAVE_AIO_MSGQ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-05 20:33:21 +0000