1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
3 * mono-os-mutex.h: Portability wrappers around POSIX Mutexes
5 * Authors: Jeffrey Stedfast <fejj@ximian.com>
7 * Copyright 2002 Ximian, Inc. (www.ximian.com)
9 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
12 #ifndef __MONO_OS_MUTEX_H__
13 #define __MONO_OS_MUTEX_H__
22 #if !defined(HOST_WIN32)
30 #ifdef HAVE_SYS_TIME_H
36 #if !defined(HOST_WIN32)
38 typedef pthread_mutex_t mono_mutex_t;
39 typedef pthread_cond_t mono_cond_t;
42 mono_os_mutex_init (mono_mutex_t *mutex)
44 return pthread_mutex_init (mutex, NULL);
48 mono_os_mutex_init_recursive (mono_mutex_t *mutex)
51 pthread_mutexattr_t attr;
53 pthread_mutexattr_init (&attr);
54 pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
55 res = pthread_mutex_init (mutex, &attr);
56 pthread_mutexattr_destroy (&attr);
62 mono_os_mutex_destroy (mono_mutex_t *mutex)
64 return pthread_mutex_destroy (mutex);
68 mono_os_mutex_lock (mono_mutex_t *mutex)
72 res = pthread_mutex_lock (mutex);
73 g_assert (res != EINVAL);
79 mono_os_mutex_trylock (mono_mutex_t *mutex)
81 return pthread_mutex_trylock (mutex);
85 mono_os_mutex_unlock (mono_mutex_t *mutex)
87 return pthread_mutex_unlock (mutex);
91 mono_os_cond_init (mono_cond_t *cond)
93 return pthread_cond_init (cond, NULL);
97 mono_os_cond_destroy (mono_cond_t *cond)
99 return pthread_cond_destroy (cond);
103 mono_os_cond_wait (mono_cond_t *cond, mono_mutex_t *mutex)
107 res = pthread_cond_wait (cond, mutex);
108 g_assert (res != EINVAL);
114 mono_os_cond_timedwait (mono_cond_t *cond, mono_mutex_t *mutex, guint32 timeout_ms)
121 if (timeout_ms == (guint32) 0xFFFFFFFF)
122 return mono_os_cond_wait (cond, mutex);
124 /* ms = 10^-3, us = 10^-6, ns = 10^-9 */
126 gettimeofday (&tv, NULL);
127 tv.tv_sec += timeout_ms / 1000;
128 usecs = tv.tv_usec + ((timeout_ms % 1000) * 1000);
129 if (usecs >= 1000000) {
133 ts.tv_sec = tv.tv_sec;
134 ts.tv_nsec = usecs * 1000;
136 res = pthread_cond_timedwait (cond, mutex, &ts);
137 g_assert (res != EINVAL);
143 mono_os_cond_signal (mono_cond_t *cond)
145 return pthread_cond_signal (cond);
149 mono_os_cond_broadcast (mono_cond_t *cond)
151 return pthread_cond_broadcast (cond);
156 /* Vanilla MinGW is missing some defs, load them from MinGW-w64. */
157 #if defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR && (_WIN32_WINNT >= 0x0600)
159 /* Fixme: Opaque structs */
160 typedef PVOID RTL_CONDITION_VARIABLE;
161 typedef PVOID RTL_SRWLOCK;
163 #ifndef _RTL_RUN_ONCE_DEF
164 #define _RTL_RUN_ONCE_DEF 1
165 typedef PVOID RTL_RUN_ONCE, *PRTL_RUN_ONCE;
166 typedef DWORD (WINAPI *PRTL_RUN_ONCE_INIT_FN)(PRTL_RUN_ONCE, PVOID, PVOID *);
167 #define RTL_RUN_ONCE_INIT 0
168 #define RTL_RUN_ONCE_CHECK_ONLY 1UL
169 #define RTL_RUN_ONCE_ASYNC 2UL
170 #define RTL_RUN_ONCE_INIT_FAILED 4UL
171 #define RTL_RUN_ONCE_CTX_RESERVED_BITS 2
172 #endif /* _RTL_RUN_ONCE_DEF */
173 #define RTL_SRWLOCK_INIT 0
174 #define RTL_CONDITION_VARIABLE_INIT 0
175 #define RTL_CONDITION_VARIABLE_LOCKMODE_SHARED 1
177 #define CONDITION_VARIABLE_INIT RTL_CONDITION_VARIABLE_INIT
178 #define CONDITION_VARIABLE_LOCKMODE_SHARED RTL_CONDITION_VARIABLE_LOCKMODE_SHARED
179 #define SRWLOCK_INIT RTL_SRWLOCK_INIT
181 /*Condition Variables http://msdn.microsoft.com/en-us/library/ms682052%28VS.85%29.aspx*/
182 typedef RTL_CONDITION_VARIABLE CONDITION_VARIABLE, *PCONDITION_VARIABLE;
183 typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
185 WINBASEAPI VOID WINAPI InitializeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
186 WINBASEAPI WINBOOL WINAPI SleepConditionVariableCS(PCONDITION_VARIABLE ConditionVariable, PCRITICAL_SECTION CriticalSection, DWORD dwMilliseconds);
187 WINBASEAPI WINBOOL WINAPI SleepConditionVariableSRW(PCONDITION_VARIABLE ConditionVariable, PSRWLOCK SRWLock, DWORD dwMilliseconds, ULONG Flags);
188 WINBASEAPI VOID WINAPI WakeAllConditionVariable(PCONDITION_VARIABLE ConditionVariable);
189 WINBASEAPI VOID WINAPI WakeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
191 /*Slim Reader/Writer (SRW) Locks http://msdn.microsoft.com/en-us/library/aa904937%28VS.85%29.aspx*/
192 WINBASEAPI VOID WINAPI AcquireSRWLockExclusive(PSRWLOCK SRWLock);
193 WINBASEAPI VOID WINAPI AcquireSRWLockShared(PSRWLOCK SRWLock);
194 WINBASEAPI VOID WINAPI InitializeSRWLock(PSRWLOCK SRWLock);
195 WINBASEAPI VOID WINAPI ReleaseSRWLockExclusive(PSRWLOCK SRWLock);
196 WINBASEAPI VOID WINAPI ReleaseSRWLockShared(PSRWLOCK SRWLock);
198 WINBASEAPI BOOLEAN TryAcquireSRWLockExclusive(PSRWLOCK SRWLock);
199 WINBASEAPI BOOLEAN TryAcquireSRWLockShared(PSRWLOCK SRWLock);
201 /*One-Time Initialization http://msdn.microsoft.com/en-us/library/aa363808(VS.85).aspx*/
202 #define INIT_ONCE_ASYNC 0x00000002UL
203 #define INIT_ONCE_INIT_FAILED 0x00000004UL
205 typedef PRTL_RUN_ONCE PINIT_ONCE;
206 typedef PRTL_RUN_ONCE LPINIT_ONCE;
207 typedef WINBOOL CALLBACK (*PINIT_ONCE_FN) (PINIT_ONCE InitOnce, PVOID Parameter, PVOID *Context);
209 WINBASEAPI WINBOOL WINAPI InitOnceBeginInitialize(LPINIT_ONCE lpInitOnce, DWORD dwFlags, PBOOL fPending, LPVOID *lpContext);
210 WINBASEAPI WINBOOL WINAPI InitOnceComplete(LPINIT_ONCE lpInitOnce, DWORD dwFlags, LPVOID lpContext);
211 WINBASEAPI WINBOOL WINAPI InitOnceExecuteOnce(PINIT_ONCE InitOnce, PINIT_ONCE_FN InitFn, PVOID Parameter, LPVOID *Context);
213 #endif /* defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR && (_WIN32_WINNT >= 0x0600) */
215 typedef CRITICAL_SECTION mono_mutex_t;
216 typedef CONDITION_VARIABLE mono_cond_t;
219 mono_os_mutex_init (mono_mutex_t *mutex)
221 InitializeCriticalSection (mutex);
226 mono_os_mutex_init_recursive (mono_mutex_t *mutex)
228 InitializeCriticalSection (mutex);
233 mono_os_mutex_destroy (mono_mutex_t *mutex)
235 DeleteCriticalSection (mutex);
240 mono_os_mutex_lock (mono_mutex_t *mutex)
242 EnterCriticalSection (mutex);
247 mono_os_mutex_trylock (mono_mutex_t *mutex)
249 return TryEnterCriticalSection (mutex) != 0 ? 0 : 1;
253 mono_os_mutex_unlock (mono_mutex_t *mutex)
255 LeaveCriticalSection (mutex);
260 mono_os_cond_init (mono_cond_t *cond)
262 InitializeConditionVariable (cond);
267 mono_os_cond_destroy (mono_cond_t *cond)
269 /* Beauty of win32 API: do not destroy it */
274 mono_os_cond_wait (mono_cond_t *cond, mono_mutex_t *mutex)
276 return SleepConditionVariableCS (cond, mutex, INFINITE) ? 0 : 1;
280 mono_os_cond_timedwait (mono_cond_t *cond, mono_mutex_t *mutex, guint32 timeout_ms)
282 return SleepConditionVariableCS (cond, mutex, timeout_ms) ? 0 : 1;
286 mono_os_cond_signal (mono_cond_t *cond)
288 WakeConditionVariable (cond);
293 mono_os_cond_broadcast (mono_cond_t *cond)
295 WakeAllConditionVariable (cond);
303 #endif /* __MONO_OS_MUTEX_H__ */