1 /* 2 * Copyright 2008-2009, Stephan Aßmus <superstippi@gmx.de> 3 * All rights reserved. Distributed under the terms of the MIT License. 4 */ 5 #ifndef _SEMAPHORE_LOCKER_H 6 #define _SEMAPHORE_LOCKER_H 7 8 9 #include "AutoLocker.h" 10 11 12 class SemaphoreLocking { 13 public: 14 inline bool Lock(sem_id* lockable) 15 { 16 return acquire_sem(*lockable) == B_OK; 17 } 18 19 inline void Unlock(sem_id* lockable) 20 { 21 release_sem(*lockable); 22 } 23 }; 24 25 26 class SemaphoreLocker : public AutoLocker<sem_id, SemaphoreLocking> { 27 public: 28 inline SemaphoreLocker(sem_id semaphore, bool alreadyLocked = false, 29 bool lockIfNotLocked = true) 30 : 31 AutoLocker<sem_id, SemaphoreLocking>(), 32 fSem(semaphore) 33 { 34 SetTo(&fSem, alreadyLocked, lockIfNotLocked); 35 } 36 37 private: 38 sem_id fSem; 39 }; 40 41 #endif // _SEMAPHORE_LOCKER_H 42