server/mpm/worker/fdqueue.h

   1 /* Licensed to the Apache Software Foundation (ASF) under one or more
   2  * contributor license agreements.  See the NOTICE file distributed with
   3  * this work for additional information regarding copyright ownership.
   4  * The ASF licenses this file to You under the Apache License, Version 2.0
   5  * (the "License"); you may not use this file except in compliance with
   6  * the License.  You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /**
  18  * @file  worker/fdqueue.h
  19  * @brief fd queue declarations
  20  *
  21  * @addtogroup APACHE_MPM_WORKER
  22  * @{
  23  */
  24
  25 #ifndef FDQUEUE_H
  26 #define FDQUEUE_H
  27 #include "httpd.h"
  28 #include <stdlib.h>
  29 #if APR_HAVE_UNISTD_H
  30 #include <unistd.h>
  31 #endif
  32 #include <apr_thread_mutex.h>
  33 #include <apr_thread_cond.h>
  34 #include <sys/types.h>
  35 #if APR_HAVE_SYS_SOCKET_H
  36 #include <sys/socket.h>
  37 #endif
  38 #include <apr_errno.h>
  39
  40 typedef struct fd_queue_info_t fd_queue_info_t;
  41
  42 apr_status_t ap_queue_info_create(fd_queue_info_t **queue_info,
  43                                   apr_pool_t *pool, int max_idlers);
  44 apr_status_t ap_queue_info_set_idle(fd_queue_info_t *queue_info,
  45                                     apr_pool_t *pool_to_recycle);
  46 apr_status_t ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
  47                                           apr_pool_t **recycled_pool);
  48 apr_status_t ap_queue_info_term(fd_queue_info_t *queue_info);
  49
  50 struct fd_queue_elem_t {
  51     apr_socket_t      *sd;
  52     apr_pool_t        *p;
  53 };
  54 typedef struct fd_queue_elem_t fd_queue_elem_t;
  55
  56 struct fd_queue_t {
  57     fd_queue_elem_t    *data;
  58     int                 nelts;
  59     int                 bounds;
  60     apr_thread_mutex_t *one_big_mutex;
  61     apr_thread_cond_t  *not_empty;
  62     int                 terminated;
  63 };
  64 typedef struct fd_queue_t fd_queue_t;
  65
  66 apr_status_t ap_queue_init(fd_queue_t *queue, int queue_capacity, apr_pool_t *a);
  67 apr_status_t ap_queue_push(fd_queue_t *queue, apr_socket_t *sd, apr_pool_t *p);
  68 apr_status_t ap_queue_pop(fd_queue_t *queue, apr_socket_t **sd, apr_pool_t **p);
  69 apr_status_t ap_queue_interrupt_all(fd_queue_t *queue);
  70 apr_status_t ap_queue_term(fd_queue_t *queue);
  71
  72 #endif /* FDQUEUE_H */
  73 /** @} */