include/osl/mutex.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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   9  * This file incorporates work covered by the following license notice:
  10  *
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_OSL_MUTEX_H
  21 #define INCLUDED_OSL_MUTEX_H
  22
  23 #include <sal/config.h>
  24
  25 #include <sal/saldllapi.h>
  26 #include <sal/types.h>
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 struct _oslMutexImpl;
  33 typedef struct _oslMutexImpl * oslMutex;
  34
  35 /** Create a mutex.
  36     @return 0 if the mutex could not be created, otherwise a handle to the mutex.
  37 */
  38 SAL_DLLPUBLIC oslMutex SAL_CALL osl_createMutex(void);
  39
  40 /** Release the OS-structures and free mutex data-structure.
  41     @param Mutex the mutex-handle
  42 */
  43 SAL_DLLPUBLIC void SAL_CALL osl_destroyMutex(oslMutex Mutex);
  44
  45 /** Acquire the mutex, block if already acquired by another thread.
  46     @param Mutex handle to a created mutex.
  47     @retval False if system-call fails.
  48 */
  49 SAL_DLLPUBLIC sal_Bool SAL_CALL osl_acquireMutex(oslMutex Mutex);
  50
  51 /** Try to acquire the mutex without blocking.
  52     @param Mutex handle to a created mutex.
  53     @retval False if it could not be acquired.
  54 */
  55 SAL_DLLPUBLIC sal_Bool SAL_CALL osl_tryToAcquireMutex(oslMutex Mutex);
  56
  57 /** Release the mutex.
  58     @param Mutex handle to a created mutex.
  59     @retval False if system-call fails.
  60 */
  61 SAL_DLLPUBLIC sal_Bool SAL_CALL osl_releaseMutex(oslMutex Mutex);
  62
  63 /** Returns a unique and global mutex.
  64     @return the global mutex.
  65 */
  66 SAL_DLLPUBLIC oslMutex * SAL_CALL osl_getGlobalMutex(void);
  67
  68 #ifdef __cplusplus
  69 }
  70 #endif
  71
  72 #endif // INCLUDED_OSL_MUTEX_H
  73
  74 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */