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Diffstat (limited to 'rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c')
-rw-r--r--rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c317
1 files changed, 0 insertions, 317 deletions
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c
deleted file mode 100644
index 17a819bf..00000000
--- a/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c
+++ /dev/null
@@ -1,317 +0,0 @@
-/* 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 "fdqueue.h"
-
-struct fd_queue_info_t {
- int idlers;
- apr_thread_mutex_t *idlers_mutex;
- apr_thread_cond_t *wait_for_idler;
- int terminated;
- int max_idlers;
- apr_pool_t **recycled_pools;
- int num_recycled;
-};
-
-static apr_status_t queue_info_cleanup(void *data_)
-{
- fd_queue_info_t *qi = data_;
- int i;
- apr_thread_cond_destroy(qi->wait_for_idler);
- apr_thread_mutex_destroy(qi->idlers_mutex);
- for (i = 0; i < qi->num_recycled; i++) {
- apr_pool_destroy(qi->recycled_pools[i]);
- }
- return APR_SUCCESS;
-}
-
-apr_status_t ap_queue_info_create(fd_queue_info_t **queue_info,
- apr_pool_t *pool, int max_idlers)
-{
- apr_status_t rv;
- fd_queue_info_t *qi;
-
- qi = apr_palloc(pool, sizeof(*qi));
- memset(qi, 0, sizeof(*qi));
-
- rv = apr_thread_mutex_create(&qi->idlers_mutex, APR_THREAD_MUTEX_DEFAULT,
- pool);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- rv = apr_thread_cond_create(&qi->wait_for_idler, pool);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- qi->recycled_pools = (apr_pool_t **)apr_palloc(pool, max_idlers *
- sizeof(apr_pool_t *));
- qi->num_recycled = 0;
- qi->max_idlers = max_idlers;
- apr_pool_cleanup_register(pool, qi, queue_info_cleanup,
- apr_pool_cleanup_null);
-
- *queue_info = qi;
-
- return APR_SUCCESS;
-}
-
-apr_status_t ap_queue_info_set_idle(fd_queue_info_t *queue_info,
- apr_pool_t *pool_to_recycle)
-{
- apr_status_t rv;
- rv = apr_thread_mutex_lock(queue_info->idlers_mutex);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- AP_DEBUG_ASSERT(queue_info->idlers >= 0);
- AP_DEBUG_ASSERT(queue_info->num_recycled < queue_info->max_idlers);
- if (pool_to_recycle) {
- queue_info->recycled_pools[queue_info->num_recycled++] =
- pool_to_recycle;
- }
- if (queue_info->idlers++ == 0) {
- /* Only signal if we had no idlers before. */
- apr_thread_cond_signal(queue_info->wait_for_idler);
- }
- rv = apr_thread_mutex_unlock(queue_info->idlers_mutex);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- return APR_SUCCESS;
-}
-
-apr_status_t ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
- apr_pool_t **recycled_pool)
-{
- apr_status_t rv;
- *recycled_pool = NULL;
- rv = apr_thread_mutex_lock(queue_info->idlers_mutex);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- AP_DEBUG_ASSERT(queue_info->idlers >= 0);
- while ((queue_info->idlers == 0) && (!queue_info->terminated)) {
- rv = apr_thread_cond_wait(queue_info->wait_for_idler,
- queue_info->idlers_mutex);
- if (rv != APR_SUCCESS) {
- apr_status_t rv2;
- rv2 = apr_thread_mutex_unlock(queue_info->idlers_mutex);
- if (rv2 != APR_SUCCESS) {
- return rv2;
- }
- return rv;
- }
- }
- queue_info->idlers--; /* Oh, and idler? Let's take 'em! */
- if (queue_info->num_recycled) {
- *recycled_pool =
- queue_info->recycled_pools[--queue_info->num_recycled];
- }
- rv = apr_thread_mutex_unlock(queue_info->idlers_mutex);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- else if (queue_info->terminated) {
- return APR_EOF;
- }
- else {
- return APR_SUCCESS;
- }
-}
-
-apr_status_t ap_queue_info_term(fd_queue_info_t *queue_info)
-{
- apr_status_t rv;
- rv = apr_thread_mutex_lock(queue_info->idlers_mutex);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- queue_info->terminated = 1;
- apr_thread_cond_broadcast(queue_info->wait_for_idler);
- rv = apr_thread_mutex_unlock(queue_info->idlers_mutex);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- return APR_SUCCESS;
-}
-
-/**
- * Detects when the fd_queue_t is full. This utility function is expected
- * to be called from within critical sections, and is not threadsafe.
- */
-#define ap_queue_full(queue) ((queue)->nelts == (queue)->bounds)
-
-/**
- * Detects when the fd_queue_t is empty. This utility function is expected
- * to be called from within critical sections, and is not threadsafe.
- */
-#define ap_queue_empty(queue) ((queue)->nelts == 0)
-
-/**
- * Callback routine that is called to destroy this
- * fd_queue_t when its pool is destroyed.
- */
-static apr_status_t ap_queue_destroy(void *data)
-{
- fd_queue_t *queue = data;
-
- /* Ignore errors here, we can't do anything about them anyway.
- * XXX: We should at least try to signal an error here, it is
- * indicative of a programmer error. -aaron */
- apr_thread_cond_destroy(queue->not_empty);
- apr_thread_mutex_destroy(queue->one_big_mutex);
-
- return APR_SUCCESS;
-}
-
-/**
- * Initialize the fd_queue_t.
- */
-apr_status_t ap_queue_init(fd_queue_t *queue, int queue_capacity, apr_pool_t *a)
-{
- int i;
- apr_status_t rv;
-
- if ((rv = apr_thread_mutex_create(&queue->one_big_mutex,
- APR_THREAD_MUTEX_DEFAULT, a)) != APR_SUCCESS) {
- return rv;
- }
- if ((rv = apr_thread_cond_create(&queue->not_empty, a)) != APR_SUCCESS) {
- return rv;
- }
-
- queue->data = apr_palloc(a, queue_capacity * sizeof(fd_queue_elem_t));
- queue->bounds = queue_capacity;
- queue->nelts = 0;
-
- /* Set all the sockets in the queue to NULL */
- for (i = 0; i < queue_capacity; ++i)
- queue->data[i].sd = NULL;
-
- apr_pool_cleanup_register(a, queue, ap_queue_destroy, apr_pool_cleanup_null);
-
- return APR_SUCCESS;
-}
-
-/**
- * Push a new socket onto the queue. Blocks if the queue is full. Once
- * the push operation has completed, it signals other threads waiting
- * in ap_queue_pop() that they may continue consuming sockets.
- */
-apr_status_t ap_queue_push(fd_queue_t *queue, apr_socket_t *sd, apr_pool_t *p)
-{
- fd_queue_elem_t *elem;
- apr_status_t rv;
-
- if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
- return rv;
- }
-
- AP_DEBUG_ASSERT(!queue->terminated);
- AP_DEBUG_ASSERT(!ap_queue_full(queue));
-
- elem = &queue->data[queue->nelts];
- elem->sd = sd;
- elem->p = p;
- queue->nelts++;
-
- apr_thread_cond_signal(queue->not_empty);
-
- if ((rv = apr_thread_mutex_unlock(queue->one_big_mutex)) != APR_SUCCESS) {
- return rv;
- }
-
- return APR_SUCCESS;
-}
-
-/**
- * Retrieves the next available socket from the queue. If there are no
- * sockets available, it will block until one becomes available.
- * Once retrieved, the socket is placed into the address specified by
- * 'sd'.
- */
-apr_status_t ap_queue_pop(fd_queue_t *queue, apr_socket_t **sd, apr_pool_t **p)
-{
- fd_queue_elem_t *elem;
- apr_status_t rv;
-
- if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
- return rv;
- }
-
- /* Keep waiting until we wake up and find that the queue is not empty. */
- if (ap_queue_empty(queue)) {
- if (!queue->terminated) {
- apr_thread_cond_wait(queue->not_empty, queue->one_big_mutex);
- }
- /* If we wake up and it's still empty, then we were interrupted */
- if (ap_queue_empty(queue)) {
- rv = apr_thread_mutex_unlock(queue->one_big_mutex);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- if (queue->terminated) {
- return APR_EOF; /* no more elements ever again */
- }
- else {
- return APR_EINTR;
- }
- }
- }
-
- elem = &queue->data[--queue->nelts];
- *sd = elem->sd;
- *p = elem->p;
-#ifdef AP_DEBUG
- elem->sd = NULL;
- elem->p = NULL;
-#endif /* AP_DEBUG */
-
- rv = apr_thread_mutex_unlock(queue->one_big_mutex);
- return rv;
-}
-
-apr_status_t ap_queue_interrupt_all(fd_queue_t *queue)
-{
- apr_status_t rv;
-
- if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
- return rv;
- }
- apr_thread_cond_broadcast(queue->not_empty);
- if ((rv = apr_thread_mutex_unlock(queue->one_big_mutex)) != APR_SUCCESS) {
- return rv;
- }
- return APR_SUCCESS;
-}
-
-apr_status_t ap_queue_term(fd_queue_t *queue)
-{
- apr_status_t rv;
-
- if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
- return rv;
- }
- /* we must hold one_big_mutex when setting this... otherwise,
- * we could end up setting it and waking everybody up just after a
- * would-be popper checks it but right before they block
- */
- queue->terminated = 1;
- if ((rv = apr_thread_mutex_unlock(queue->one_big_mutex)) != APR_SUCCESS) {
- return rv;
- }
- return ap_queue_interrupt_all(queue);
-}