2 * Copyright (c) 2016 Tino Reichardt
5 * You can contact the author at:
6 * - zstdmt source repository: https://github.com/mcmilk/zstdmt
8 * This source code is licensed under both the BSD-style license (found in the
9 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
10 * in the COPYING file in the root directory of this source tree).
11 * You may select, at your option, one of the above-listed licenses.
14 #ifndef THREADING_H_938743
15 #define THREADING_H_938743
19 #if defined (__cplusplus)
23 #if defined(ZSTD_MULTITHREAD) && defined(_WIN32)
26 * Windows minimalist Pthread Wrapper
36 #define _WIN32_WINNT 0x0600
38 #ifndef WIN32_LEAN_AND_MEAN
39 # define WIN32_LEAN_AND_MEAN
42 #undef ERROR /* reported already defined on VS 2015 (Rich Geldreich) */
45 #define ERROR(name) ZSTD_ERROR(name)
49 #define ZSTD_pthread_mutex_t CRITICAL_SECTION
50 #define ZSTD_pthread_mutex_init(a, b) ((void)(b), InitializeCriticalSection((a)), 0)
51 #define ZSTD_pthread_mutex_destroy(a) DeleteCriticalSection((a))
52 #define ZSTD_pthread_mutex_lock(a) EnterCriticalSection((a))
53 #define ZSTD_pthread_mutex_unlock(a) LeaveCriticalSection((a))
55 /* condition variable */
56 #define ZSTD_pthread_cond_t CONDITION_VARIABLE
57 #define ZSTD_pthread_cond_init(a, b) ((void)(b), InitializeConditionVariable((a)), 0)
58 #define ZSTD_pthread_cond_destroy(a) ((void)(a))
59 #define ZSTD_pthread_cond_wait(a, b) SleepConditionVariableCS((a), (b), INFINITE)
60 #define ZSTD_pthread_cond_signal(a) WakeConditionVariable((a))
61 #define ZSTD_pthread_cond_broadcast(a) WakeAllConditionVariable((a))
63 /* ZSTD_pthread_create() and ZSTD_pthread_join() */
64 typedef HANDLE ZSTD_pthread_t;
66 int ZSTD_pthread_create(ZSTD_pthread_t* thread, const void* unused,
67 void* (*start_routine) (void*), void* arg);
69 int ZSTD_pthread_join(ZSTD_pthread_t thread);
72 * add here more wrappers as required
76 #elif defined(ZSTD_MULTITHREAD) /* posix assumed ; need a better detection method */
77 /* === 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) pthread_join((a),NULL)
99 #else /* DEBUGLEVEL >= 1 */
101 /* Debug implementation of threading.
102 * In this implementation we use pointers for mutexes and condition variables.
103 * This way, if we forget to init/destroy them the program will crash or ASAN
107 #define ZSTD_pthread_mutex_t pthread_mutex_t*
108 int ZSTD_pthread_mutex_init(ZSTD_pthread_mutex_t* mutex, pthread_mutexattr_t const* attr);
109 int ZSTD_pthread_mutex_destroy(ZSTD_pthread_mutex_t* mutex);
110 #define ZSTD_pthread_mutex_lock(a) pthread_mutex_lock(*(a))
111 #define ZSTD_pthread_mutex_unlock(a) pthread_mutex_unlock(*(a))
113 #define ZSTD_pthread_cond_t pthread_cond_t*
114 int ZSTD_pthread_cond_init(ZSTD_pthread_cond_t* cond, pthread_condattr_t const* attr);
115 int ZSTD_pthread_cond_destroy(ZSTD_pthread_cond_t* cond);
116 #define ZSTD_pthread_cond_wait(a, b) pthread_cond_wait(*(a), *(b))
117 #define ZSTD_pthread_cond_signal(a) pthread_cond_signal(*(a))
118 #define ZSTD_pthread_cond_broadcast(a) pthread_cond_broadcast(*(a))
120 #define ZSTD_pthread_t pthread_t
121 #define ZSTD_pthread_create(a, b, c, d) pthread_create((a), (b), (c), (d))
122 #define ZSTD_pthread_join(a) pthread_join((a),NULL)
126 #else /* ZSTD_MULTITHREAD not defined */
127 /* No multithreading support */
129 typedef int ZSTD_pthread_mutex_t;
130 #define ZSTD_pthread_mutex_init(a, b) ((void)(a), (void)(b), 0)
131 #define ZSTD_pthread_mutex_destroy(a) ((void)(a))
132 #define ZSTD_pthread_mutex_lock(a) ((void)(a))
133 #define ZSTD_pthread_mutex_unlock(a) ((void)(a))
135 typedef int ZSTD_pthread_cond_t;
136 #define ZSTD_pthread_cond_init(a, b) ((void)(a), (void)(b), 0)
137 #define ZSTD_pthread_cond_destroy(a) ((void)(a))
138 #define ZSTD_pthread_cond_wait(a, b) ((void)(a), (void)(b))
139 #define ZSTD_pthread_cond_signal(a) ((void)(a))
140 #define ZSTD_pthread_cond_broadcast(a) ((void)(a))
142 /* do not use ZSTD_pthread_t */
144 #endif /* ZSTD_MULTITHREAD */
146 #if defined (__cplusplus)
150 #endif /* THREADING_H_938743 */