1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
3 * mono-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_MUTEX_H__
11 #define __MONO_MUTEX_H__
25 /* Vanilla MinGW is missing some defs, loan them from MinGW-w64. */
26 #if defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR
28 #if (_WIN32_WINNT >= 0x0600)
29 /* Fixme: Opaque structs */
30 typedef PVOID RTL_CONDITION_VARIABLE;
31 typedef PVOID RTL_SRWLOCK;
33 #ifndef _RTL_RUN_ONCE_DEF
34 #define _RTL_RUN_ONCE_DEF 1
35 typedef PVOID RTL_RUN_ONCE, *PRTL_RUN_ONCE;
36 typedef DWORD (WINAPI *PRTL_RUN_ONCE_INIT_FN)(PRTL_RUN_ONCE, PVOID, PVOID *);
37 #define RTL_RUN_ONCE_INIT 0
38 #define RTL_RUN_ONCE_CHECK_ONLY 1UL
39 #define RTL_RUN_ONCE_ASYNC 2UL
40 #define RTL_RUN_ONCE_INIT_FAILED 4UL
41 #define RTL_RUN_ONCE_CTX_RESERVED_BITS 2
43 #define RTL_SRWLOCK_INIT 0
44 #define RTL_CONDITION_VARIABLE_INIT 0
45 #define RTL_CONDITION_VARIABLE_LOCKMODE_SHARED 1
47 #define CONDITION_VARIABLE_INIT RTL_CONDITION_VARIABLE_INIT
48 #define CONDITION_VARIABLE_LOCKMODE_SHARED RTL_CONDITION_VARIABLE_LOCKMODE_SHARED
49 #define SRWLOCK_INIT RTL_SRWLOCK_INIT
52 #if (_WIN32_WINNT >= 0x0600)
53 /*Condition Variables http://msdn.microsoft.com/en-us/library/ms682052%28VS.85%29.aspx*/
54 typedef RTL_CONDITION_VARIABLE CONDITION_VARIABLE, *PCONDITION_VARIABLE;
55 typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
57 WINBASEAPI VOID WINAPI InitializeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
58 WINBASEAPI WINBOOL WINAPI SleepConditionVariableCS(PCONDITION_VARIABLE ConditionVariable, PCRITICAL_SECTION CriticalSection, DWORD dwMilliseconds);
59 WINBASEAPI WINBOOL WINAPI SleepConditionVariableSRW(PCONDITION_VARIABLE ConditionVariable, PSRWLOCK SRWLock, DWORD dwMilliseconds, ULONG Flags);
60 WINBASEAPI VOID WINAPI WakeAllConditionVariable(PCONDITION_VARIABLE ConditionVariable);
61 WINBASEAPI VOID WINAPI WakeConditionVariable(PCONDITION_VARIABLE ConditionVariable);
63 /*Slim Reader/Writer (SRW) Locks http://msdn.microsoft.com/en-us/library/aa904937%28VS.85%29.aspx*/
64 WINBASEAPI VOID WINAPI AcquireSRWLockExclusive(PSRWLOCK SRWLock);
65 WINBASEAPI VOID WINAPI AcquireSRWLockShared(PSRWLOCK SRWLock);
66 WINBASEAPI VOID WINAPI InitializeSRWLock(PSRWLOCK SRWLock);
67 WINBASEAPI VOID WINAPI ReleaseSRWLockExclusive(PSRWLOCK SRWLock);
68 WINBASEAPI VOID WINAPI ReleaseSRWLockShared(PSRWLOCK SRWLock);
70 WINBASEAPI BOOLEAN TryAcquireSRWLockExclusive(PSRWLOCK SRWLock);
71 WINBASEAPI BOOLEAN TryAcquireSRWLockShared(PSRWLOCK SRWLock);
73 /*One-Time Initialization http://msdn.microsoft.com/en-us/library/aa363808(VS.85).aspx*/
74 #define INIT_ONCE_ASYNC 0x00000002UL
75 #define INIT_ONCE_INIT_FAILED 0x00000004UL
77 typedef PRTL_RUN_ONCE PINIT_ONCE;
78 typedef PRTL_RUN_ONCE LPINIT_ONCE;
79 typedef WINBOOL CALLBACK (*PINIT_ONCE_FN) (PINIT_ONCE InitOnce, PVOID Parameter, PVOID *Context);
81 WINBASEAPI WINBOOL WINAPI InitOnceBeginInitialize(LPINIT_ONCE lpInitOnce, DWORD dwFlags, PBOOL fPending, LPVOID *lpContext);
82 WINBASEAPI WINBOOL WINAPI InitOnceComplete(LPINIT_ONCE lpInitOnce, DWORD dwFlags, LPVOID lpContext);
83 WINBASEAPI WINBOOL WINAPI InitOnceExecuteOnce(PINIT_ONCE InitOnce, PINIT_ONCE_FN InitFn, PVOID Parameter, LPVOID *Context);
86 #endif /* defined __MINGW32__ && !defined __MINGW64_VERSION_MAJOR */
87 #endif /* HOST_WIN32 */
94 pthread_mutex_t mutex;
98 #define MONO_ONCE_INIT { PTHREAD_MUTEX_INITIALIZER, FALSE }
100 int mono_once (mono_once_t *once, void (*once_init) (void));
102 typedef pthread_mutex_t mono_mutex_t;
103 typedef pthread_cond_t mono_cond_t;
105 #define mono_mutex_init(mutex) pthread_mutex_init (mutex, NULL)
106 #define mono_mutex_lock(mutex) pthread_mutex_lock (mutex)
107 #define mono_mutex_trylock(mutex) pthread_mutex_trylock (mutex)
108 #define mono_mutex_timedlock(mutex,timeout) pthread_mutex_timedlock (mutex, timeout)
109 #define mono_mutex_unlock(mutex) pthread_mutex_unlock (mutex)
110 #define mono_mutex_destroy(mutex) pthread_mutex_destroy (mutex)
112 #define mono_cond_init(cond,attr) pthread_cond_init (cond,attr)
113 #define mono_cond_wait(cond,mutex) pthread_cond_wait (cond, mutex)
114 #define mono_cond_timedwait(cond,mutex,timeout) pthread_cond_timedwait (cond, mutex, timeout)
115 #define mono_cond_signal(cond) pthread_cond_signal (cond)
116 #define mono_cond_broadcast(cond) pthread_cond_broadcast (cond)
117 #define mono_cond_destroy(cond)
120 * This should be used instead of mono_cond_timedwait, since that function is not implemented on windows.
122 int mono_cond_timedwait_ms (mono_cond_t *cond, mono_mutex_t *mutex, int timeout_ms);
124 /* This is a function so it can be passed to pthread_cleanup_push -
125 * that is a macro and giving it a macro as a parameter breaks.
128 static inline int mono_mutex_unlock_in_cleanup (mono_mutex_t *mutex)
130 return(mono_mutex_unlock (mutex));
133 /* Returns zero on success. */
135 mono_mutex_init_recursive (mono_mutex_t *mutex)
138 pthread_mutexattr_t attr;
140 pthread_mutexattr_init (&attr);
141 pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
142 res = pthread_mutex_init (mutex, &attr);
143 pthread_mutexattr_destroy (&attr);
150 typedef CRITICAL_SECTION mono_mutex_t;
151 typedef CONDITION_VARIABLE mono_cond_t;
153 #define mono_mutex_init(mutex) (InitializeCriticalSection((mutex)), 0)
154 #define mono_mutex_init_recursive(mutex) (InitializeCriticalSection((mutex)), 0)
155 #define mono_mutex_lock(mutex) EnterCriticalSection((mutex))
156 #define mono_mutex_trylock(mutex) (!TryEnterCriticalSection((mutex)))
157 #define mono_mutex_unlock(mutex) LeaveCriticalSection((mutex))
158 #define mono_mutex_destroy(mutex) DeleteCriticalSection((mutex))
161 mono_cond_init (mono_cond_t *cond, int attr)
163 InitializeConditionVariable (cond);
168 mono_cond_wait (mono_cond_t *cond, mono_mutex_t *mutex)
170 return SleepConditionVariableCS (cond, mutex, INFINITE) ? 0 : 1;
174 mono_cond_timedwait (mono_cond_t *cond, mono_mutex_t *mutex, struct timespec *timeout)
177 g_assert_not_reached ();
182 mono_cond_signal (mono_cond_t *cond)
184 WakeConditionVariable (cond);
189 mono_cond_broadcast (mono_cond_t *cond)
191 WakeAllConditionVariable (cond);
196 mono_cond_destroy (mono_cond_t *cond)
202 mono_cond_timedwait_ms (mono_cond_t *cond, mono_mutex_t *mutex, int timeout_ms)
204 return SleepConditionVariableCS (cond, mutex, timeout_ms) ? 0 : 1;
209 int mono_mutex_init_suspend_safe (mono_mutex_t *mutex);
213 #endif /* __MONO_MUTEX_H__ */