2 * Copyright (c) 2016 Tino Reichardt
5 * This source code is licensed under both the BSD-style license (found in the
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7 * in the COPYING file in the root directory of this source tree).
9 * You can contact the author at:
10 * - zstdmt source repository: https://github.com/mcmilk/zstdmt
13 #ifndef THREADING_H_938743
14 #define THREADING_H_938743
16 #if defined (__cplusplus)
20 #if defined(ZSTD_MULTITHREAD) && defined(_WIN32)
23 * Windows minimalist Pthread Wrapper, based on :
24 * http://www.cse.wustl.edu/~schmidt/win32-cv-1.html
34 #define _WIN32_WINNT 0x0600
36 #ifndef WIN32_LEAN_AND_MEAN
37 # define WIN32_LEAN_AND_MEAN
40 #undef ERROR /* reported already defined on VS 2015 (Rich Geldreich) */
43 #define ERROR(name) ZSTD_ERROR(name)
47 #define ZSTD_pthread_mutex_t CRITICAL_SECTION
48 #define ZSTD_pthread_mutex_init(a, b) ((void)(b), InitializeCriticalSection((a)), 0)
49 #define ZSTD_pthread_mutex_destroy(a) DeleteCriticalSection((a))
50 #define ZSTD_pthread_mutex_lock(a) EnterCriticalSection((a))
51 #define ZSTD_pthread_mutex_unlock(a) LeaveCriticalSection((a))
53 /* condition variable */
54 #define ZSTD_pthread_cond_t CONDITION_VARIABLE
55 #define ZSTD_pthread_cond_init(a, b) ((void)(b), InitializeConditionVariable((a)), 0)
56 #define ZSTD_pthread_cond_destroy(a) ((void)(a))
57 #define ZSTD_pthread_cond_wait(a, b) SleepConditionVariableCS((a), (b), INFINITE)
58 #define ZSTD_pthread_cond_signal(a) WakeConditionVariable((a))
59 #define ZSTD_pthread_cond_broadcast(a) WakeAllConditionVariable((a))
61 /* ZSTD_pthread_create() and ZSTD_pthread_join() */
64 void* (*start_routine)(void*);
68 int ZSTD_pthread_create(ZSTD_pthread_t* thread, const void* unused,
69 void* (*start_routine) (void*), void* arg);
71 int ZSTD_pthread_join(ZSTD_pthread_t thread, void** value_ptr);
74 * add here more wrappers as required
78 #elif defined(ZSTD_MULTITHREAD) /* posix assumed ; need a better detection method */
79 /* === POSIX Systems === */
82 #define ZSTD_pthread_mutex_t pthread_mutex_t
83 #define ZSTD_pthread_mutex_init(a, b) pthread_mutex_init((a), (b))
84 #define ZSTD_pthread_mutex_destroy(a) pthread_mutex_destroy((a))
85 #define ZSTD_pthread_mutex_lock(a) pthread_mutex_lock((a))
86 #define ZSTD_pthread_mutex_unlock(a) pthread_mutex_unlock((a))
88 #define ZSTD_pthread_cond_t pthread_cond_t
89 #define ZSTD_pthread_cond_init(a, b) pthread_cond_init((a), (b))
90 #define ZSTD_pthread_cond_destroy(a) pthread_cond_destroy((a))
91 #define ZSTD_pthread_cond_wait(a, b) pthread_cond_wait((a), (b))
92 #define ZSTD_pthread_cond_signal(a) pthread_cond_signal((a))
93 #define ZSTD_pthread_cond_broadcast(a) pthread_cond_broadcast((a))
95 #define ZSTD_pthread_t pthread_t
96 #define ZSTD_pthread_create(a, b, c, d) pthread_create((a), (b), (c), (d))
97 #define ZSTD_pthread_join(a, b) pthread_join((a),(b))
99 #else /* ZSTD_MULTITHREAD not defined */
100 /* No multithreading support */
102 typedef int ZSTD_pthread_mutex_t;
103 #define ZSTD_pthread_mutex_init(a, b) ((void)(a), (void)(b), 0)
104 #define ZSTD_pthread_mutex_destroy(a) ((void)(a))
105 #define ZSTD_pthread_mutex_lock(a) ((void)(a))
106 #define ZSTD_pthread_mutex_unlock(a) ((void)(a))
108 typedef int ZSTD_pthread_cond_t;
109 #define ZSTD_pthread_cond_init(a, b) ((void)(a), (void)(b), 0)
110 #define ZSTD_pthread_cond_destroy(a) ((void)(a))
111 #define ZSTD_pthread_cond_wait(a, b) ((void)(a), (void)(b))
112 #define ZSTD_pthread_cond_signal(a) ((void)(a))
113 #define ZSTD_pthread_cond_broadcast(a) ((void)(a))
115 /* do not use ZSTD_pthread_t */
117 #endif /* ZSTD_MULTITHREAD */
119 #if defined (__cplusplus)
123 #endif /* THREADING_H_938743 */