b3a36ca5ee
Accidentally had this all hidden by an #ifndef _WIN32 when I wrote it. Change-Id: I3a6afefe23b799ea7aa0f9a380f5a743673096d0
148 lines
4 KiB
C
148 lines
4 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBS_CUTILS_THREADS_H
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#define _LIBS_CUTILS_THREADS_H
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#include <sys/types.h>
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#if !defined(_WIN32)
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#include <pthread.h>
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#else
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#include <windows.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***********************************************************************/
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/***********************************************************************/
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/***** *****/
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/***** local thread storage *****/
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/***** *****/
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/***********************************************************************/
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/***********************************************************************/
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extern pid_t gettid();
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#if !defined(_WIN32)
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typedef struct {
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pthread_mutex_t lock;
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int has_tls;
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pthread_key_t tls;
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} thread_store_t;
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#define THREAD_STORE_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, 0, 0 }
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#else // !defined(_WIN32)
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typedef struct {
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int lock_init;
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int has_tls;
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DWORD tls;
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CRITICAL_SECTION lock;
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} thread_store_t;
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#define THREAD_STORE_INITIALIZER { 0, 0, 0, {0, 0, 0, 0, 0, 0} }
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#endif // !defined(_WIN32)
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typedef void (*thread_store_destruct_t)(void* value);
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extern void* thread_store_get(thread_store_t* store);
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extern void thread_store_set(thread_store_t* store,
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void* value,
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thread_store_destruct_t destroy);
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/***********************************************************************/
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/***********************************************************************/
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/***** *****/
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/***** mutexes *****/
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/***** *****/
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/***********************************************************************/
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/***********************************************************************/
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#if !defined(_WIN32)
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typedef pthread_mutex_t mutex_t;
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#define MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
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static __inline__ void mutex_lock(mutex_t* lock)
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{
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pthread_mutex_lock(lock);
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}
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static __inline__ void mutex_unlock(mutex_t* lock)
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{
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pthread_mutex_unlock(lock);
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}
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static __inline__ int mutex_init(mutex_t* lock)
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{
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return pthread_mutex_init(lock, NULL);
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}
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static __inline__ void mutex_destroy(mutex_t* lock)
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{
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pthread_mutex_destroy(lock);
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}
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#else // !defined(_WIN32)
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typedef struct {
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int init;
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CRITICAL_SECTION lock[1];
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} mutex_t;
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#define MUTEX_INITIALIZER { 0, {{ NULL, 0, 0, NULL, NULL, 0 }} }
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static __inline__ void mutex_lock(mutex_t* lock)
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{
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if (!lock->init) {
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lock->init = 1;
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InitializeCriticalSection( lock->lock );
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lock->init = 2;
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} else while (lock->init != 2)
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Sleep(10);
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EnterCriticalSection(lock->lock);
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}
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static __inline__ void mutex_unlock(mutex_t* lock)
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{
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LeaveCriticalSection(lock->lock);
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}
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static __inline__ int mutex_init(mutex_t* lock)
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{
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InitializeCriticalSection(lock->lock);
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lock->init = 2;
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return 0;
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}
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static __inline__ void mutex_destroy(mutex_t* lock)
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{
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if (lock->init) {
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lock->init = 0;
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DeleteCriticalSection(lock->lock);
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}
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}
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#endif // !defined(_WIN32)
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIBS_CUTILS_THREADS_H */
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