xref: /trunk/main/sal/inc/osl/mutex.h (revision cdf0e10c)
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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir #ifndef _OSL_MUTEX_H_
29*cdf0e10cSrcweir #define _OSL_MUTEX_H_
30*cdf0e10cSrcweir 
31*cdf0e10cSrcweir #include <sal/types.h>
32*cdf0e10cSrcweir 
33*cdf0e10cSrcweir #ifdef __cplusplus
34*cdf0e10cSrcweir extern "C" {
35*cdf0e10cSrcweir #endif
36*cdf0e10cSrcweir 
37*cdf0e10cSrcweir struct _oslMutexImpl;
38*cdf0e10cSrcweir typedef struct _oslMutexImpl * oslMutex;
39*cdf0e10cSrcweir 
40*cdf0e10cSrcweir /** Create a thread-local mutex.
41*cdf0e10cSrcweir 	@return 0 if the mutex could not be created, otherwise a handle to the mutex.
42*cdf0e10cSrcweir */
43*cdf0e10cSrcweir oslMutex SAL_CALL osl_createMutex(void);
44*cdf0e10cSrcweir 
45*cdf0e10cSrcweir /** Release the OS-structures and free mutex data-structure.
46*cdf0e10cSrcweir 	@param Mutex the mutex-handle
47*cdf0e10cSrcweir */
48*cdf0e10cSrcweir void SAL_CALL osl_destroyMutex(oslMutex Mutex);
49*cdf0e10cSrcweir 
50*cdf0e10cSrcweir /** Acquire the mutex, block if already acquired by another thread.
51*cdf0e10cSrcweir 	@param Mutex handle to a created mutex.
52*cdf0e10cSrcweir 	@return False if system-call fails.
53*cdf0e10cSrcweir */
54*cdf0e10cSrcweir sal_Bool SAL_CALL osl_acquireMutex(oslMutex Mutex);
55*cdf0e10cSrcweir 
56*cdf0e10cSrcweir /** Try to acquire the mutex without blocking.
57*cdf0e10cSrcweir 	@param Mutex handle to a created mutex.
58*cdf0e10cSrcweir 	@return False if it could not be acquired.
59*cdf0e10cSrcweir */
60*cdf0e10cSrcweir sal_Bool SAL_CALL osl_tryToAcquireMutex(oslMutex Mutex);
61*cdf0e10cSrcweir 
62*cdf0e10cSrcweir /** Release the mutex.
63*cdf0e10cSrcweir 	@param Mutex handle to a created mutex.
64*cdf0e10cSrcweir 	@return False if system-call fails.
65*cdf0e10cSrcweir */
66*cdf0e10cSrcweir sal_Bool SAL_CALL osl_releaseMutex(oslMutex Mutex);
67*cdf0e10cSrcweir 
68*cdf0e10cSrcweir /** Returns a unique and global mutex.
69*cdf0e10cSrcweir 	@return the global mutex.
70*cdf0e10cSrcweir */
71*cdf0e10cSrcweir oslMutex * SAL_CALL osl_getGlobalMutex(void);
72*cdf0e10cSrcweir 
73*cdf0e10cSrcweir #ifdef __cplusplus
74*cdf0e10cSrcweir }
75*cdf0e10cSrcweir #endif
76*cdf0e10cSrcweir 
77*cdf0e10cSrcweir #endif	/* _OSL_MUTEX_H_ */
78