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Diffstat (limited to 'src/fluent-bit/lib/monkey/mk_server/mk_http_thread.c')
-rw-r--r--src/fluent-bit/lib/monkey/mk_server/mk_http_thread.c290
1 files changed, 290 insertions, 0 deletions
diff --git a/src/fluent-bit/lib/monkey/mk_server/mk_http_thread.c b/src/fluent-bit/lib/monkey/mk_server/mk_http_thread.c
new file mode 100644
index 000000000..d3c606f3a
--- /dev/null
+++ b/src/fluent-bit/lib/monkey/mk_server/mk_http_thread.c
@@ -0,0 +1,290 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/* Monkey HTTP Server
+ * ==================
+ * Copyright 2001-2016 Monkey Software LLC <eduardo@monkey.io>
+ *
+ * Licensed 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 <monkey/mk_info.h>
+#include <monkey/mk_plugin.h>
+#include <monkey/mk_thread.h>
+#include <monkey/mk_net.h>
+#include <monkey/mk_vhost.h>
+#include <monkey/mk_http_thread.h>
+
+#include <stdlib.h>
+
+/*
+ * libco do not support parameters in the entrypoint function due to the
+ * complexity of implementation in terms of architecture and compiler, but
+ * it provide a workaround using a global structure as a middle entry-point
+ * that achieve the same stuff.
+ */
+struct mk_http_libco_params {
+ int type;
+ struct mk_vhost_handler *handler;
+ struct mk_http_session *session;
+ struct mk_http_request *request;
+ int n_params;
+ struct mk_list *params;
+ struct mk_thread *th;
+};
+
+pthread_once_t mk_http_thread_initialize_tls_once_flag = PTHREAD_ONCE_INIT;
+
+MK_TLS_DEFINE(struct mk_http_libco_params, mk_http_thread_libco_params);
+MK_TLS_DEFINE(struct mk_thread, mk_thread);
+
+/* This function could return NULL if the process runs out of memory, in that
+ * case failure is imminent.
+ */
+static inline struct mk_http_libco_params *thread_get_libco_params()
+{
+ struct mk_http_libco_params *libco_params;
+
+ libco_params = MK_TLS_GET(mk_http_thread_libco_params);
+
+ if (libco_params == NULL) {
+ libco_params = mk_mem_alloc_z(sizeof(struct mk_http_libco_params));
+
+ if (libco_params == NULL) {
+ mk_err("libco thread params could not be allocated.");
+ }
+
+ MK_TLS_SET(mk_http_thread_libco_params, libco_params);
+ }
+
+ return libco_params;
+}
+
+static void mk_http_thread_initialize_tls_once()
+{
+ MK_TLS_INIT(mk_http_thread_libco_params);
+ MK_TLS_INIT(mk_thread);
+}
+
+void mk_http_thread_initialize_tls()
+{
+ pthread_once(&mk_http_thread_initialize_tls_once_flag,
+ mk_http_thread_initialize_tls_once);
+}
+
+static inline void thread_cb_init_vars()
+{
+ struct mk_http_libco_params *libco_params;
+ struct mk_vhost_handler *handler;
+ struct mk_http_session *session;
+ struct mk_http_request *request;
+ int close;
+ int type;
+ struct mk_http_thread *mth;
+ struct mk_thread *th;
+
+ libco_params = thread_get_libco_params();
+
+ type = libco_params->type;
+ handler = libco_params->handler;
+ session = libco_params->session;
+ request = libco_params->request;
+ th = libco_params->th;
+
+ /*
+ * Until this point the th->callee already set the variables, so we
+ * wait until the core wanted to resume so we really trigger the
+ * output callback.
+ */
+ co_switch(th->caller);
+
+ if (type == MK_HTTP_THREAD_LIB) {
+ /* Invoke the handler callback */
+ handler->cb(request, handler->data);
+
+ /*
+ * Once the callback finished, we need to sanitize the connection
+ * so other further requests can be processed.
+ */
+ int ret;
+ struct mk_sched_worker *sched;
+ struct mk_channel *channel;
+
+ channel = request->session->channel;
+ sched = mk_sched_get_thread_conf();
+
+ MK_EVENT_NEW(channel->event);
+ ret = mk_event_add(sched->loop,
+ channel->fd,
+ MK_EVENT_CONNECTION,
+ MK_EVENT_READ, channel->event);
+ if (ret == -1) {
+ //return -1;
+ }
+
+ /* Save temporal session */
+ mth = request->thread;
+
+ /*
+ * Finalize request internally, if ret == -1 means we should
+ * ask to shutdown the connection.
+ */
+ ret = mk_http_request_end(session, session->server);
+ if (ret == -1) {
+ close = MK_TRUE;
+ }
+ else {
+ close = MK_FALSE;
+ }
+ mk_http_thread_purge(mth, close);
+
+ /* Return control to caller */
+ mk_thread_yield(th);
+ }
+ else if (type == MK_HTTP_THREAD_PLUGIN) {
+ /* FIXME: call plugin handler callback with params */
+ }
+}
+
+static inline void thread_params_set(struct mk_thread *th,
+ int type,
+ struct mk_vhost_handler *handler,
+ struct mk_http_session *session,
+ struct mk_http_request *request,
+ int n_params,
+ struct mk_list *params)
+{
+ struct mk_http_libco_params *libco_params;
+
+ libco_params = thread_get_libco_params();
+
+ /* Callback parameters in order */
+ libco_params->type = type;
+ libco_params->handler = handler;
+ libco_params->session = session;
+ libco_params->request = request;
+ libco_params->n_params = n_params;
+ libco_params->params = params;
+ libco_params->th = th;
+
+ co_switch(th->callee);
+}
+
+struct mk_http_thread *mk_http_thread_create(int type,
+ struct mk_vhost_handler *handler,
+ struct mk_http_session *session,
+ struct mk_http_request *request,
+ int n_params,
+ struct mk_list *params)
+{
+ size_t stack_size;
+ struct mk_thread *th = NULL;
+ struct mk_http_thread *mth;
+ struct mk_sched_worker *sched;
+
+ sched = mk_sched_get_thread_conf();
+ if (!sched) {
+ return NULL;
+ }
+
+ th = mk_thread_new(sizeof(struct mk_http_thread), NULL);
+ if (!th) {
+ return NULL;
+ }
+
+ mth = (struct mk_http_thread *) MK_THREAD_DATA(th);
+ if (!mth) {
+ return NULL;
+ }
+
+ mth->session = session;
+ mth->request = request;
+ mth->parent = th;
+ mth->close = MK_FALSE;
+ request->thread = mth;
+ mk_list_add(&mth->_head, &sched->threads);
+
+ th->caller = co_active();
+ th->callee = co_create(MK_THREAD_STACK_SIZE,
+ thread_cb_init_vars, &stack_size);
+
+#ifdef MK_HAVE_VALGRIND
+ th->valgrind_stack_id = VALGRIND_STACK_REGISTER(th->callee,
+ ((char *)th->callee) + stack_size);
+#endif
+
+ /* Workaround for makecontext() */
+ thread_params_set(th, type, handler, session, request, n_params, params);
+
+ return mth;
+}
+
+/*
+ * Move a http thread context from sched->thread to sched->threads_purge list.
+ * On this way the scheduler will release or reasign the resource later.
+ */
+int mk_http_thread_purge(struct mk_http_thread *mth, int close)
+{
+ struct mk_sched_worker *sched;
+
+ sched = mk_sched_get_thread_conf();
+ if (!sched) {
+ return -1;
+ }
+
+ mth->close = close;
+ mk_list_del(&mth->_head);
+ mk_list_add(&mth->_head, &sched->threads_purge);
+
+ return 0;
+}
+
+int mk_http_thread_destroy(struct mk_http_thread *mth)
+{
+ struct mk_thread *th;
+
+ /* Unlink from scheduler thread list */
+ mk_list_del(&mth->_head);
+
+ /* release original memory context */
+ th = mth->parent;
+ mth->session->channel->event->type = MK_EVENT_CONNECTION;
+ mk_thread_destroy(th);
+
+ return 0;
+}
+
+int mk_http_thread_event(struct mk_event *event)
+{
+ struct mk_sched_conn *conn = (struct mk_sched_conn *) event;
+
+ /*
+ struct mk_thread *th;
+ struct mk_http_thread *mth;
+
+ th = conn->channel.thread;
+ mth = (struct mk_http_thread *) MK_THREAD_DATA(th);
+ */
+
+ mk_thread_resume(conn->channel.thread);
+ return 0;
+}
+
+/*
+ * Start the co-routine: invoke coroutine callback and start processing
+ * data flush requests.
+ */
+int mk_http_thread_start(struct mk_http_thread *mth)
+{
+ mk_http_thread_resume(mth);
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-31 07:12:11 +0000