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Merge "libcutils: remove rather than fix the mutex."

This commit is contained in:
Yi Kong 2018-07-14 21:18:54 +00:00 committed by Gerrit Code Review
parent 2a989cf525 51a2cacbb9
commit 39e7a1c981
1 changed files with 7 additions and 78 deletions
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85
libcutils/include/cutils/threads.h
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@ -29,16 +29,16 @@
extern "C" {
#endif
/***********************************************************************/
/***********************************************************************/
/***** *****/
/***** local thread storage *****/
/***** *****/
/***********************************************************************/
/***********************************************************************/
//
// Deprecated: use android::base::GetThreadId instead, which doesn't truncate on Mac/Windows.
//
extern pid_t gettid();
//
// Deprecated: use `_Thread_local` in C or `thread_local` in C++.
//
#if !defined(_WIN32)
typedef struct {
@ -70,77 +70,6 @@ extern void thread_store_set(thread_store_t* store,
void* value,
thread_store_destruct_t destroy);
/***********************************************************************/
/***********************************************************************/
/***** *****/
/***** mutexes *****/
/***** *****/
/***********************************************************************/
/***********************************************************************/
#if !defined(_WIN32)
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);
}
#else // !defined(_WIN32)
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 // !defined(_WIN32)
#ifdef __cplusplus
}
#endif