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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file server/mpm_fdqueue.h
* @brief fd queue declarations
*
* @addtogroup APACHE_MPM_EVENT
* @{
*/
#ifndef MPM_FDQUEUE_H
#define MPM_FDQUEUE_H
#include <apr.h>
/* This code is not AP_DECLARE()ed/exported, and used by MPMs event/worker
* only (for now), not worth thinking about w/o threads either...
*/
#if APR_HAS_THREADS
#include "ap_mpm.h"
#include <apr_ring.h>
#include <apr_pools.h>
#include <apr_thread_mutex.h>
#include <apr_thread_cond.h>
#include <apr_network_io.h>
struct fd_queue_info_t; /* opaque */
struct fd_queue_elem_t; /* opaque */
typedef struct fd_queue_info_t fd_queue_info_t;
typedef struct fd_queue_elem_t fd_queue_elem_t;
AP_DECLARE(apr_status_t) ap_queue_info_create(fd_queue_info_t **queue_info,
apr_pool_t *pool, int max_idlers,
int max_recycled_pools);
AP_DECLARE(apr_status_t) ap_queue_info_set_idle(fd_queue_info_t *queue_info,
apr_pool_t *pool_to_recycle);
AP_DECLARE(apr_status_t) ap_queue_info_try_get_idler(fd_queue_info_t *queue_info);
AP_DECLARE(apr_status_t) ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
int *had_to_block);
AP_DECLARE(apr_uint32_t) ap_queue_info_num_idlers(fd_queue_info_t *queue_info);
AP_DECLARE(apr_status_t) ap_queue_info_term(fd_queue_info_t *queue_info);
AP_DECLARE(void) ap_queue_info_pop_pool(fd_queue_info_t *queue_info,
apr_pool_t **recycled_pool);
AP_DECLARE(void) ap_queue_info_push_pool(fd_queue_info_t *queue_info,
apr_pool_t *pool_to_recycle);
AP_DECLARE(void) ap_queue_info_free_idle_pools(fd_queue_info_t *queue_info);
struct timer_event_t
{
APR_RING_ENTRY(timer_event_t) link;
apr_time_t when;
ap_mpm_callback_fn_t *cbfunc;
void *baton;
int canceled;
apr_array_header_t *pfds;
};
typedef struct timer_event_t timer_event_t;
struct fd_queue_t
{
APR_RING_HEAD(timers_t, timer_event_t) timers;
fd_queue_elem_t *data;
unsigned int nelts;
unsigned int bounds;
unsigned int in;
unsigned int out;
apr_thread_mutex_t *one_big_mutex;
apr_thread_cond_t *not_empty;
volatile int terminated;
};
typedef struct fd_queue_t fd_queue_t;
AP_DECLARE(apr_status_t) ap_queue_create(fd_queue_t **pqueue,
int capacity, apr_pool_t *p);
AP_DECLARE(apr_status_t) ap_queue_push_socket(fd_queue_t *queue,
apr_socket_t *sd, void *sd_baton,
apr_pool_t *p);
AP_DECLARE(apr_status_t) ap_queue_push_timer(fd_queue_t *queue,
timer_event_t *te);
AP_DECLARE(apr_status_t) ap_queue_pop_something(fd_queue_t *queue,
apr_socket_t **sd, void **sd_baton,
apr_pool_t **p, timer_event_t **te);
#define ap_queue_pop_socket(q_, s_, p_) \
ap_queue_pop_something((q_), (s_), NULL, (p_), NULL)
AP_DECLARE(apr_status_t) ap_queue_interrupt_all(fd_queue_t *queue);
AP_DECLARE(apr_status_t) ap_queue_interrupt_one(fd_queue_t *queue);
AP_DECLARE(apr_status_t) ap_queue_term(fd_queue_t *queue);
#endif /* APR_HAS_THREADS */
#endif /* MPM_FDQUEUE_H */
/** @} */
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