147 lines
4 KiB
C
147 lines
4 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2007 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed 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 _LIBS_CUTILS_THREADS_H
|
||
|
|
#define _LIBS_CUTILS_THREADS_H
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/***********************************************************************/
|
||
|
|
/***********************************************************************/
|
||
|
|
/***** *****/
|
||
|
|
/***** local thread storage *****/
|
||
|
|
/***** *****/
|
||
|
|
/***********************************************************************/
|
||
|
|
/***********************************************************************/
|
||
|
|
|
||
|
|
#ifdef HAVE_PTHREADS
|
||
|
|
|
||
|
|
#include <pthread.h>
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
pthread_mutex_t lock;
|
||
|
|
int has_tls;
|
||
|
|
pthread_key_t tls;
|
||
|
|
|
||
|
|
} thread_store_t;
|
||
|
|
|
||
|
|
#define THREAD_STORE_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, 0, 0 }
|
||
|
|
|
||
|
|
#elif defined HAVE_WIN32_THREADS
|
||
|
|
|
||
|
|
#include <windows.h>
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
int lock_init;
|
||
|
|
int has_tls;
|
||
|
|
DWORD tls;
|
||
|
|
CRITICAL_SECTION lock;
|
||
|
|
|
||
|
|
} thread_store_t;
|
||
|
|
|
||
|
|
#define THREAD_STORE_INITIALIZER { 0, 0, 0, {0, 0, 0, 0, 0, 0} }
|
||
|
|
|
||
|
|
#else
|
||
|
|
# error "no thread_store_t implementation for your platform !!"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef void (*thread_store_destruct_t)(void* value);
|
||
|
|
|
||
|
|
extern void* thread_store_get(thread_store_t* store);
|
||
|
|
|
||
|
|
extern void thread_store_set(thread_store_t* store,
|
||
|
|
void* value,
|
||
|
|
thread_store_destruct_t destroy);
|
||
|
|
|
||
|
|
/***********************************************************************/
|
||
|
|
/***********************************************************************/
|
||
|
|
/***** *****/
|
||
|
|
/***** mutexes *****/
|
||
|
|
/***** *****/
|
||
|
|
/***********************************************************************/
|
||
|
|
/***********************************************************************/
|
||
|
|
|
||
|
|
#ifdef HAVE_PTHREADS
|
||
|
|
|
||
|
|
typedef pthread_mutex_t mutex_t;
|
||
|
|
|
||
|
|
#define MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
|
||
|
|
|
||
|
|
static __inline__ void mutex_lock(mutex_t* lock)
|
||
|
|
{
|
||
|
|
pthread_mutex_lock(lock);
|
||
|
|
}
|
||
|
|
static __inline__ void mutex_unlock(mutex_t* lock)
|
||
|
|
{
|
||
|
|
pthread_mutex_unlock(lock);
|
||
|
|
}
|
||
|
|
static __inline__ int mutex_init(mutex_t* lock)
|
||
|
|
{
|
||
|
|
return pthread_mutex_init(lock, NULL);
|
||
|
|
}
|
||
|
|
static __inline__ void mutex_destroy(mutex_t* lock)
|
||
|
|
{
|
||
|
|
pthread_mutex_destroy(lock);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_WIN32_THREADS
|
||
|
|
typedef struct {
|
||
|
|
int init;
|
||
|
|
CRITICAL_SECTION lock[1];
|
||
|
|
} mutex_t;
|
||
|
|
|
||
|
|
#define MUTEX_INITIALIZER { 0, {{ NULL, 0, 0, NULL, NULL, 0 }} }
|
||
|
|
|
||
|
|
static __inline__ void mutex_lock(mutex_t* lock)
|
||
|
|
{
|
||
|
|
if (!lock->init) {
|
||
|
|
lock->init = 1;
|
||
|
|
InitializeCriticalSection( lock->lock );
|
||
|
|
lock->init = 2;
|
||
|
|
} else while (lock->init != 2)
|
||
|
|
Sleep(10);
|
||
|
|
|
||
|
|
EnterCriticalSection(lock->lock);
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ void mutex_unlock(mutex_t* lock)
|
||
|
|
{
|
||
|
|
LeaveCriticalSection(lock->lock);
|
||
|
|
}
|
||
|
|
static __inline__ int mutex_init(mutex_t* lock)
|
||
|
|
{
|
||
|
|
InitializeCriticalSection(lock->lock);
|
||
|
|
lock->init = 2;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
static __inline__ void mutex_destroy(mutex_t* lock)
|
||
|
|
{
|
||
|
|
if (lock->init) {
|
||
|
|
lock->init = 0;
|
||
|
|
DeleteCriticalSection(lock->lock);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _LIBS_CUTILS_THREADS_H */
|