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Diffstat (limited to '')
-rw-r--r-- | include/arch/unix/apr_arch_proc_mutex.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/include/arch/unix/apr_arch_proc_mutex.h b/include/arch/unix/apr_arch_proc_mutex.h new file mode 100644 index 0000000..cfa0049 --- /dev/null +++ b/include/arch/unix/apr_arch_proc_mutex.h @@ -0,0 +1,121 @@ +/* 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 */ + |