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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.
*/
#ifndef PROC_MUTEX_H
#define PROC_MUTEX_H
#include "apr.h"
#include "apr_private.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "apr_proc_mutex.h"
#include "apr_pools.h"
#include "apr_portable.h"
#include "apr_file_io.h"
#include "apr_arch_file_io.h"
#include "apr_time.h"
/* System headers required by Locks library */
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if APR_HAVE_STDIO_H
#include <stdio.h>
#endif
#if APR_HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_SYS_IPC_H
#include <sys/ipc.h>
#endif
#ifdef HAVE_SYS_SEM_H
#include <sys/sem.h>
#endif
#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
#endif
#if APR_HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h>
#endif
#if APR_HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#if APR_HAVE_PTHREAD_H
#include <pthread.h>
#endif
/* End System Headers */
struct apr_proc_mutex_unix_lock_methods_t {
unsigned int flags;
apr_status_t (*create)(apr_proc_mutex_t *, const char *);
apr_status_t (*acquire)(apr_proc_mutex_t *);
apr_status_t (*tryacquire)(apr_proc_mutex_t *);
apr_status_t (*timedacquire)(apr_proc_mutex_t *, apr_interval_time_t);
apr_status_t (*release)(apr_proc_mutex_t *);
apr_status_t (*cleanup)(void *);
apr_status_t (*child_init)(apr_proc_mutex_t **, apr_pool_t *, const char *);
apr_status_t (*perms_set)(apr_proc_mutex_t *, apr_fileperms_t, apr_uid_t, apr_gid_t);
apr_lockmech_e mech;
const char *name;
};
typedef struct apr_proc_mutex_unix_lock_methods_t apr_proc_mutex_unix_lock_methods_t;
/* bit values for flags field in apr_unix_lock_methods_t */
#define APR_PROCESS_LOCK_MECH_IS_GLOBAL 1
#if !APR_HAVE_UNION_SEMUN && defined(APR_HAS_SYSVSEM_SERIALIZE)
union semun {
int val;
struct semid_ds *buf;
unsigned short *array;
};
#endif
struct apr_proc_mutex_t {
apr_pool_t *pool;
const apr_proc_mutex_unix_lock_methods_t *meth;
int curr_locked;
char *fname;
apr_os_proc_mutex_t os; /* Native mutex holder. */
#if APR_HAS_FCNTL_SERIALIZE || APR_HAS_FLOCK_SERIALIZE
apr_file_t *interproc; /* For apr_file_ calls on native fd. */
int interproc_closing; /* whether the native fd is opened/closed with
* 'interproc' or apr_os_file_put()ed (hence
* needing an an explicit close for consistency
* with other methods).
*/
#endif
#if APR_HAS_PROC_PTHREAD_SERIALIZE
int pthread_refcounting; /* Whether the native mutex is refcounted or
* apr_os_proc_mutex_put()ed, which makes
* refcounting impossible/undesirable.
*/
#endif
};
void apr_proc_mutex_unix_setup_lock(void);
#endif /* PROC_MUTEX_H */
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