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)
10 #ifndef __MONO_OS_MUTEX_H__
11 #define __MONO_OS_MUTEX_H__
20 #if !defined(HOST_WIN32)
28 #ifdef HAVE_SYS_TIME_H
34 #if !defined(HOST_WIN32)
36 typedef pthread_mutex_t mono_mutex_t;
37 typedef pthread_cond_t mono_cond_t;
40 mono_os_mutex_init (mono_mutex_t *mutex)
42 return pthread_mutex_init (mutex, NULL);
46 mono_os_mutex_init_recursive (mono_mutex_t *mutex)
49 pthread_mutexattr_t attr;
51 pthread_mutexattr_init (&attr);
52 pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
53 res = pthread_mutex_init (mutex, &attr);
54 pthread_mutexattr_destroy (&attr);
60 mono_os_mutex_destroy (mono_mutex_t *mutex)
62 return pthread_mutex_destroy (mutex);
66 mono_os_mutex_lock (mono_mutex_t *mutex)
70 res = pthread_mutex_lock (mutex);
71 g_assert (res != EINVAL);
77 mono_os_mutex_trylock (mono_mutex_t *mutex)
79 return pthread_mutex_trylock (mutex);
83 mono_os_mutex_unlock (mono_mutex_t *mutex)
85 return pthread_mutex_unlock (mutex);
89 mono_os_cond_init (mono_cond_t *cond)
91 return pthread_cond_init (cond, NULL);
95 mono_os_cond_destroy (mono_cond_t *cond)
97 return pthread_cond_destroy (cond);
101 mono_os_cond_wait (mono_cond_t *cond, mono_mutex_t *mutex)
105 res = pthread_cond_wait (cond, mutex);
106 g_assert (res != EINVAL);
112 mono_os_cond_timedwait (mono_cond_t *cond, mono_mutex_t *mutex, guint32 timeout_ms)
119 if (timeout_ms == (guint32) 0xFFFFFFFF)
120 return mono_os_cond_wait (cond, mutex);
122 /* ms = 10^-3, us = 10^-6, ns = 10^-9 */
124 gettimeofday (&tv, NULL);
125 tv.tv_sec += timeout_ms / 1000;
126 usecs = tv.tv_usec + ((timeout_ms % 1000) * 1000);
127 if (usecs >= 1000000) {
131 ts.tv_sec = tv.tv_sec;
132 ts.tv_nsec = usecs * 1000;
134 res = pthread_cond_timedwait (cond, mutex, &ts);
135 g_assert (res != EINVAL);
141 mono_os_cond_signal (mono_cond_t *cond)
143 return pthread_cond_signal (cond);
147 mono_os_cond_broadcast (mono_cond_t *cond)
149 return pthread_cond_broadcast (cond);
154 /* Vanilla MinGW is missing some defs, load them from MinGW-w64. */
155 #if defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR && (_WIN32_WINNT >= 0x0600)
157 /* Fixme: Opaque structs */
158 typedef PVOID RTL_CONDITION_VARIABLE;
159 typedef PVOID RTL_SRWLOCK;
161 #ifndef _RTL_RUN_ONCE_DEF
162 #define _RTL_RUN_ONCE_DEF 1
163 typedef PVOID RTL_RUN_ONCE, *PRTL_RUN_ONCE;
164 typedef DWORD (WINAPI *PRTL_RUN_ONCE_INIT_FN)(PRTL_RUN_ONCE, PVOID, PVOID *);
165 #define RTL_RUN_ONCE_INIT 0
166 #define RTL_RUN_ONCE_CHECK_ONLY 1UL
167 #define RTL_RUN_ONCE_ASYNC 2UL
168 #define RTL_RUN_ONCE_INIT_FAILED 4UL
169 #define RTL_RUN_ONCE_CTX_RESERVED_BITS 2
170 #endif /* _RTL_RUN_ONCE_DEF */
171 #define RTL_SRWLOCK_INIT 0
172 #define RTL_CONDITION_VARIABLE_INIT 0
173 #define RTL_CONDITION_VARIABLE_LOCKMODE_SHARED 1
175 #define CONDITION_VARIABLE_INIT RTL_CONDITION_VARIABLE_INIT
176 #define CONDITION_VARIABLE_LOCKMODE_SHARED RTL_CONDITION_VARIABLE_LOCKMODE_SHARED
177 #define SRWLOCK_INIT RTL_SRWLOCK_INIT
179 /*Condition Variables http://msdn.microsoft.com/en-us/library/ms682052%28VS.85%29.aspx*/
180 typedef RTL_CONDITION_VARIABLE CONDITION_VARIABLE, *PCONDITION_VARIABLE;
181 typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
183 WINBASEAPI VOID WINAPI InitializeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
184 WINBASEAPI WINBOOL WINAPI SleepConditionVariableCS(PCONDITION_VARIABLE ConditionVariable, PCRITICAL_SECTION CriticalSection, DWORD dwMilliseconds);
185 WINBASEAPI WINBOOL WINAPI SleepConditionVariableSRW(PCONDITION_VARIABLE ConditionVariable, PSRWLOCK SRWLock, DWORD dwMilliseconds, ULONG Flags);
186 WINBASEAPI VOID WINAPI WakeAllConditionVariable(PCONDITION_VARIABLE ConditionVariable);
187 WINBASEAPI VOID WINAPI WakeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
189 /*Slim Reader/Writer (SRW) Locks http://msdn.microsoft.com/en-us/library/aa904937%28VS.85%29.aspx*/
190 WINBASEAPI VOID WINAPI AcquireSRWLockExclusive(PSRWLOCK SRWLock);
191 WINBASEAPI VOID WINAPI AcquireSRWLockShared(PSRWLOCK SRWLock);
192 WINBASEAPI VOID WINAPI InitializeSRWLock(PSRWLOCK SRWLock);
193 WINBASEAPI VOID WINAPI ReleaseSRWLockExclusive(PSRWLOCK SRWLock);
194 WINBASEAPI VOID WINAPI ReleaseSRWLockShared(PSRWLOCK SRWLock);
196 WINBASEAPI BOOLEAN TryAcquireSRWLockExclusive(PSRWLOCK SRWLock);
197 WINBASEAPI BOOLEAN TryAcquireSRWLockShared(PSRWLOCK SRWLock);
199 /*One-Time Initialization http://msdn.microsoft.com/en-us/library/aa363808(VS.85).aspx*/
200 #define INIT_ONCE_ASYNC 0x00000002UL
201 #define INIT_ONCE_INIT_FAILED 0x00000004UL
203 typedef PRTL_RUN_ONCE PINIT_ONCE;
204 typedef PRTL_RUN_ONCE LPINIT_ONCE;
205 typedef WINBOOL CALLBACK (*PINIT_ONCE_FN) (PINIT_ONCE InitOnce, PVOID Parameter, PVOID *Context);
207 WINBASEAPI WINBOOL WINAPI InitOnceBeginInitialize(LPINIT_ONCE lpInitOnce, DWORD dwFlags, PBOOL fPending, LPVOID *lpContext);
208 WINBASEAPI WINBOOL WINAPI InitOnceComplete(LPINIT_ONCE lpInitOnce, DWORD dwFlags, LPVOID lpContext);
209 WINBASEAPI WINBOOL WINAPI InitOnceExecuteOnce(PINIT_ONCE InitOnce, PINIT_ONCE_FN InitFn, PVOID Parameter, LPVOID *Context);
211 #endif /* defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR && (_WIN32_WINNT >= 0x0600) */
213 typedef CRITICAL_SECTION mono_mutex_t;
214 typedef CONDITION_VARIABLE mono_cond_t;
217 mono_os_mutex_init (mono_mutex_t *mutex)
219 InitializeCriticalSection (mutex);
224 mono_os_mutex_init_recursive (mono_mutex_t *mutex)
226 InitializeCriticalSection (mutex);
231 mono_os_mutex_destroy (mono_mutex_t *mutex)
233 DeleteCriticalSection (mutex);
238 mono_os_mutex_lock (mono_mutex_t *mutex)
240 EnterCriticalSection (mutex);
245 mono_os_mutex_trylock (mono_mutex_t *mutex)
247 return TryEnterCriticalSection (mutex) != 0 ? 0 : 1;
251 mono_os_mutex_unlock (mono_mutex_t *mutex)
253 LeaveCriticalSection (mutex);
258 mono_os_cond_init (mono_cond_t *cond)
260 InitializeConditionVariable (cond);
265 mono_os_cond_destroy (mono_cond_t *cond)
267 /* Beauty of win32 API: do not destroy it */
272 mono_os_cond_wait (mono_cond_t *cond, mono_mutex_t *mutex)
274 return SleepConditionVariableCS (cond, mutex, INFINITE) ? 0 : 1;
278 mono_os_cond_timedwait (mono_cond_t *cond, mono_mutex_t *mutex, guint32 timeout_ms)
280 return SleepConditionVariableCS (cond, mutex, timeout_ms) ? 0 : 1;
284 mono_os_cond_signal (mono_cond_t *cond)
286 WakeConditionVariable (cond);
291 mono_os_cond_broadcast (mono_cond_t *cond)
293 WakeAllConditionVariable (cond);
301 #endif /* __MONO_OS_MUTEX_H__ */