105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
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/**
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* Copyright (c) 2016 Tino Reichardt
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* You can contact the author at:
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* - zstdmt source repository: https://github.com/mcmilk/zstdmt
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*/
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#ifndef THREADING_H_938743
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#define THREADING_H_938743
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#if defined (__cplusplus)
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extern "C" {
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#endif
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#if defined(ZSTD_MULTITHREAD) && defined(_WIN32)
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/**
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* Windows minimalist Pthread Wrapper, based on :
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* http://www.cse.wustl.edu/~schmidt/win32-cv-1.html
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*/
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#ifdef WINVER
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# undef WINVER
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#endif
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#define WINVER 0x0600
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#ifdef _WIN32_WINNT
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# undef _WIN32_WINNT
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#endif
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#define _WIN32_WINNT 0x0600
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#ifndef WIN32_LEAN_AND_MEAN
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# define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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/* mutex */
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#define pthread_mutex_t CRITICAL_SECTION
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#define pthread_mutex_init(a,b) (InitializeCriticalSection((a)), 0)
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#define pthread_mutex_destroy(a) DeleteCriticalSection((a))
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#define pthread_mutex_lock(a) EnterCriticalSection((a))
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#define pthread_mutex_unlock(a) LeaveCriticalSection((a))
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/* condition variable */
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#define pthread_cond_t CONDITION_VARIABLE
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#define pthread_cond_init(a, b) (InitializeConditionVariable((a)), 0)
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#define pthread_cond_destroy(a) /* No delete */
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#define pthread_cond_wait(a, b) SleepConditionVariableCS((a), (b), INFINITE)
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#define pthread_cond_signal(a) WakeConditionVariable((a))
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#define pthread_cond_broadcast(a) WakeAllConditionVariable((a))
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/* pthread_create() and pthread_join() */
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typedef struct {
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HANDLE handle;
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void* (*start_routine)(void*);
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void* arg;
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} pthread_t;
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int pthread_create(pthread_t* thread, const void* unused,
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void* (*start_routine) (void*), void* arg);
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#define pthread_join(a, b) _pthread_join(&(a), (b))
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int _pthread_join(pthread_t* thread, void** value_ptr);
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/**
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* add here more wrappers as required
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*/
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#elif defined(ZSTD_MULTITHREAD) /* posix assumed ; need a better detection method */
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/* === POSIX Systems === */
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# include <pthread.h>
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#else /* ZSTD_MULTITHREAD not defined */
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/* No multithreading support */
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#define pthread_mutex_t int /* #define rather than typedef, because sometimes pthread support is implicit, resulting in duplicated symbols */
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#define pthread_mutex_init(a,b) ((void)a, 0)
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#define pthread_mutex_destroy(a)
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#define pthread_mutex_lock(a)
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#define pthread_mutex_unlock(a)
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#define pthread_cond_t int
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#define pthread_cond_init(a,b) ((void)a, 0)
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#define pthread_cond_destroy(a)
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#define pthread_cond_wait(a,b)
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#define pthread_cond_signal(a)
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#define pthread_cond_broadcast(a)
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/* do not use pthread_t */
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#endif /* ZSTD_MULTITHREAD */
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#if defined (__cplusplus)
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}
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#endif
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#endif /* THREADING_H_938743 */
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