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 #ifndef MONO_INFINITE_WAIT
37 #define MONO_INFINITE_WAIT ((guint32) 0xFFFFFFFF)
41 #if !defined(HOST_WIN32)
43 typedef pthread_mutex_t mono_mutex_t;
44 typedef pthread_cond_t mono_cond_t;
47 mono_os_mutex_init (mono_mutex_t *mutex)
49 return pthread_mutex_init (mutex, NULL);
53 mono_os_mutex_init_recursive (mono_mutex_t *mutex)
56 pthread_mutexattr_t attr;
58 pthread_mutexattr_init (&attr);
59 pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
60 res = pthread_mutex_init (mutex, &attr);
61 pthread_mutexattr_destroy (&attr);
67 mono_os_mutex_destroy (mono_mutex_t *mutex)
69 return pthread_mutex_destroy (mutex);
73 mono_os_mutex_lock (mono_mutex_t *mutex)
77 res = pthread_mutex_lock (mutex);
78 g_assert (res != EINVAL);
84 mono_os_mutex_trylock (mono_mutex_t *mutex)
86 return pthread_mutex_trylock (mutex);
90 mono_os_mutex_unlock (mono_mutex_t *mutex)
92 return pthread_mutex_unlock (mutex);
96 mono_os_cond_init (mono_cond_t *cond)
98 return pthread_cond_init (cond, NULL);
102 mono_os_cond_destroy (mono_cond_t *cond)
104 return pthread_cond_destroy (cond);
108 mono_os_cond_wait (mono_cond_t *cond, mono_mutex_t *mutex)
112 res = pthread_cond_wait (cond, mutex);
113 g_assert (res != EINVAL);
119 mono_os_cond_timedwait (mono_cond_t *cond, mono_mutex_t *mutex, guint32 timeout_ms)
126 if (timeout_ms == MONO_INFINITE_WAIT)
127 return mono_os_cond_wait (cond, mutex);
129 /* ms = 10^-3, us = 10^-6, ns = 10^-9 */
131 gettimeofday (&tv, NULL);
132 tv.tv_sec += timeout_ms / 1000;
133 usecs = tv.tv_usec + ((timeout_ms % 1000) * 1000);
134 if (usecs >= 1000000) {
138 ts.tv_sec = tv.tv_sec;
139 ts.tv_nsec = usecs * 1000;
141 res = pthread_cond_timedwait (cond, mutex, &ts);
142 g_assert (res != EINVAL);
148 mono_os_cond_signal (mono_cond_t *cond)
150 return pthread_cond_signal (cond);
154 mono_os_cond_broadcast (mono_cond_t *cond)
156 return pthread_cond_broadcast (cond);
161 /* Vanilla MinGW is missing some defs, load them from MinGW-w64. */
162 #if defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR && (_WIN32_WINNT >= 0x0600)
164 /* Fixme: Opaque structs */
165 typedef PVOID RTL_CONDITION_VARIABLE;
166 typedef PVOID RTL_SRWLOCK;
168 #ifndef _RTL_RUN_ONCE_DEF
169 #define _RTL_RUN_ONCE_DEF 1
170 typedef PVOID RTL_RUN_ONCE, *PRTL_RUN_ONCE;
171 typedef DWORD (WINAPI *PRTL_RUN_ONCE_INIT_FN)(PRTL_RUN_ONCE, PVOID, PVOID *);
172 #define RTL_RUN_ONCE_INIT 0
173 #define RTL_RUN_ONCE_CHECK_ONLY 1UL
174 #define RTL_RUN_ONCE_ASYNC 2UL
175 #define RTL_RUN_ONCE_INIT_FAILED 4UL
176 #define RTL_RUN_ONCE_CTX_RESERVED_BITS 2
177 #endif /* _RTL_RUN_ONCE_DEF */
178 #define RTL_SRWLOCK_INIT 0
179 #define RTL_CONDITION_VARIABLE_INIT 0
180 #define RTL_CONDITION_VARIABLE_LOCKMODE_SHARED 1
182 #define CONDITION_VARIABLE_INIT RTL_CONDITION_VARIABLE_INIT
183 #define CONDITION_VARIABLE_LOCKMODE_SHARED RTL_CONDITION_VARIABLE_LOCKMODE_SHARED
184 #define SRWLOCK_INIT RTL_SRWLOCK_INIT
186 /*Condition Variables http://msdn.microsoft.com/en-us/library/ms682052%28VS.85%29.aspx*/
187 typedef RTL_CONDITION_VARIABLE CONDITION_VARIABLE, *PCONDITION_VARIABLE;
188 typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
190 WINBASEAPI VOID WINAPI InitializeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
191 WINBASEAPI WINBOOL WINAPI SleepConditionVariableCS(PCONDITION_VARIABLE ConditionVariable, PCRITICAL_SECTION CriticalSection, DWORD dwMilliseconds);
192 WINBASEAPI WINBOOL WINAPI SleepConditionVariableSRW(PCONDITION_VARIABLE ConditionVariable, PSRWLOCK SRWLock, DWORD dwMilliseconds, ULONG Flags);
193 WINBASEAPI VOID WINAPI WakeAllConditionVariable(PCONDITION_VARIABLE ConditionVariable);
194 WINBASEAPI VOID WINAPI WakeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
196 /*Slim Reader/Writer (SRW) Locks http://msdn.microsoft.com/en-us/library/aa904937%28VS.85%29.aspx*/
197 WINBASEAPI VOID WINAPI AcquireSRWLockExclusive(PSRWLOCK SRWLock);
198 WINBASEAPI VOID WINAPI AcquireSRWLockShared(PSRWLOCK SRWLock);
199 WINBASEAPI VOID WINAPI InitializeSRWLock(PSRWLOCK SRWLock);
200 WINBASEAPI VOID WINAPI ReleaseSRWLockExclusive(PSRWLOCK SRWLock);
201 WINBASEAPI VOID WINAPI ReleaseSRWLockShared(PSRWLOCK SRWLock);
203 WINBASEAPI BOOLEAN TryAcquireSRWLockExclusive(PSRWLOCK SRWLock);
204 WINBASEAPI BOOLEAN TryAcquireSRWLockShared(PSRWLOCK SRWLock);
206 /*One-Time Initialization http://msdn.microsoft.com/en-us/library/aa363808(VS.85).aspx*/
207 #define INIT_ONCE_ASYNC 0x00000002UL
208 #define INIT_ONCE_INIT_FAILED 0x00000004UL
210 typedef PRTL_RUN_ONCE PINIT_ONCE;
211 typedef PRTL_RUN_ONCE LPINIT_ONCE;
212 typedef WINBOOL CALLBACK (*PINIT_ONCE_FN) (PINIT_ONCE InitOnce, PVOID Parameter, PVOID *Context);
214 WINBASEAPI WINBOOL WINAPI InitOnceBeginInitialize(LPINIT_ONCE lpInitOnce, DWORD dwFlags, PBOOL fPending, LPVOID *lpContext);
215 WINBASEAPI WINBOOL WINAPI InitOnceComplete(LPINIT_ONCE lpInitOnce, DWORD dwFlags, LPVOID lpContext);
216 WINBASEAPI WINBOOL WINAPI InitOnceExecuteOnce(PINIT_ONCE InitOnce, PINIT_ONCE_FN InitFn, PVOID Parameter, LPVOID *Context);
218 /* https://msdn.microsoft.com/en-us/library/windows/desktop/ms683477(v=vs.85).aspx */
219 WINBASEAPI BOOL WINAPI InitializeCriticalSectionEx(LPCRITICAL_SECTION lpCriticalSection, DWORD dwSpinCount, DWORD Flags);
221 #define CRITICAL_SECTION_NO_DEBUG_INFO 0x01000000
223 #endif /* defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR && (_WIN32_WINNT >= 0x0600) */
225 typedef CRITICAL_SECTION mono_mutex_t;
226 typedef CONDITION_VARIABLE mono_cond_t;
229 mono_os_mutex_init (mono_mutex_t *mutex)
231 InitializeCriticalSectionEx (mutex, 0, CRITICAL_SECTION_NO_DEBUG_INFO);
236 mono_os_mutex_init_recursive (mono_mutex_t *mutex)
238 InitializeCriticalSectionEx (mutex, 0, CRITICAL_SECTION_NO_DEBUG_INFO);
243 mono_os_mutex_destroy (mono_mutex_t *mutex)
245 DeleteCriticalSection (mutex);
250 mono_os_mutex_lock (mono_mutex_t *mutex)
252 EnterCriticalSection (mutex);
257 mono_os_mutex_trylock (mono_mutex_t *mutex)
259 return TryEnterCriticalSection (mutex) != 0 ? 0 : 1;
263 mono_os_mutex_unlock (mono_mutex_t *mutex)
265 LeaveCriticalSection (mutex);
270 mono_os_cond_init (mono_cond_t *cond)
272 InitializeConditionVariable (cond);
277 mono_os_cond_destroy (mono_cond_t *cond)
279 /* Beauty of win32 API: do not destroy it */
284 mono_os_cond_wait (mono_cond_t *cond, mono_mutex_t *mutex)
286 return SleepConditionVariableCS (cond, mutex, INFINITE) ? 0 : 1;
290 mono_os_cond_timedwait (mono_cond_t *cond, mono_mutex_t *mutex, guint32 timeout_ms)
292 return SleepConditionVariableCS (cond, mutex, timeout_ms) ? 0 : 1;
296 mono_os_cond_signal (mono_cond_t *cond)
298 WakeConditionVariable (cond);
303 mono_os_cond_broadcast (mono_cond_t *cond)
305 WakeAllConditionVariable (cond);
313 #endif /* __MONO_OS_MUTEX_H__ */