tor-android/external/badvpn_dns/base/BMutex.h

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2015-01-25 11:08:34 +00:00
/**
* @file BMutex.h
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef BADVPN_BMUTEX_H
#define BADVPN_BMUTEX_H
#if !defined(BADVPN_THREAD_SAFE) || (BADVPN_THREAD_SAFE != 0 && BADVPN_THREAD_SAFE != 1)
#error BADVPN_THREAD_SAFE is not defined or incorrect
#endif
#if BADVPN_THREAD_SAFE
#include <pthread.h>
#endif
#include <misc/debug.h>
#include <base/DebugObject.h>
typedef struct {
#if BADVPN_THREAD_SAFE
pthread_mutex_t pthread_mutex;
#endif
DebugObject d_obj;
} BMutex;
static int BMutex_Init (BMutex *o) WARN_UNUSED;
static void BMutex_Free (BMutex *o);
static void BMutex_Lock (BMutex *o);
static void BMutex_Unlock (BMutex *o);
static int BMutex_Init (BMutex *o)
{
#if BADVPN_THREAD_SAFE
if (pthread_mutex_init(&o->pthread_mutex, NULL) != 0) {
return 0;
}
#endif
DebugObject_Init(&o->d_obj);
return 1;
}
static void BMutex_Free (BMutex *o)
{
DebugObject_Free(&o->d_obj);
#if BADVPN_THREAD_SAFE
int res = pthread_mutex_destroy(&o->pthread_mutex);
B_USE(res)
ASSERT(res == 0)
#endif
}
static void BMutex_Lock (BMutex *o)
{
DebugObject_Access(&o->d_obj);
#if BADVPN_THREAD_SAFE
int res = pthread_mutex_lock(&o->pthread_mutex);
B_USE(res)
ASSERT(res == 0)
#endif
}
static void BMutex_Unlock (BMutex *o)
{
DebugObject_Access(&o->d_obj);
#if BADVPN_THREAD_SAFE
int res = pthread_mutex_unlock(&o->pthread_mutex);
B_USE(res)
ASSERT(res == 0)
#endif
}
#endif