zstd/lib/common/threading.h

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/**
* Copyright (c) 2016 Tino Reichardt
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* You can contact the author at:
* - zstdmt source repository: https://github.com/mcmilk/zstdmt
*/
#ifndef THREADING_H_938743
#define THREADING_H_938743
#if defined (__cplusplus)
extern "C" {
#endif
#if defined(ZSTD_PTHREAD) && defined(_WIN32)
/**
* Windows minimalist Pthread Wrapper, based on :
* http://www.cse.wustl.edu/~schmidt/win32-cv-1.html
*/
#ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
/* mutex */
#define pthread_mutex_t CRITICAL_SECTION
#define pthread_mutex_init(a,b) InitializeCriticalSection((a))
#define pthread_mutex_destroy(a) DeleteCriticalSection((a))
#define pthread_mutex_lock EnterCriticalSection
#define pthread_mutex_unlock LeaveCriticalSection
/* pthread_create() and pthread_join() */
typedef struct {
HANDLE handle;
void* (*start_routine)(void*);
void*varg;
} pthread_t;
int pthread_create(pthread_t* thread, const void* unused,
void* (*start_routine) (void*), void* arg);
#define pthread_join(a, b) _pthread_join(&(a), (b))
int _pthread_join(pthread_t* thread, void** value_ptr);
/**
* add here more wrappers as required
*/
#elif defined(ZSTD_PTHREAD) /* posix assumed ; need a better detection mathod */
/* === POSIX Systems === */
# include <pthread.h>
#else /* ZSTD_PTHREAD not defined */
/* No multithreading support */
typedef int pthread_mutex_t;
#define pthread_mutex_init(a,b)
#define pthread_mutex_destroy(a)
#define pthread_mutex_lock(a)
#define pthread_mutex_unlock(a)
/* do not use pthread_t */
#endif /* ZSTD_PTHREAD */
#if defined (__cplusplus)
}
#endif
#endif /* THREADING_H_938743 */