1 2 /* 3 * Copyright 2006 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #ifndef SkThread_DEFINED 11 #define SkThread_DEFINED 12 13 #include "SkTypes.h" 14 #include "SkThread_platform.h" 15 16 /****** SkThread_platform needs to define the following... 17 18 int32_t sk_atomic_inc(int32_t*); 19 int32_t sk_atomic_dec(int32_t*); 20 21 class SkMutex { 22 public: 23 SkMutex(); 24 ~SkMutex(); 25 26 void acquire(); 27 void release(); 28 }; 29 30 ****************/ 31 32 class SkAutoMutexAcquire : SkNoncopyable { 33 public: SkAutoMutexAcquire(SkBaseMutex & mutex)34 explicit SkAutoMutexAcquire(SkBaseMutex& mutex) : fMutex(&mutex) 35 { 36 SkASSERT(fMutex != NULL); 37 mutex.acquire(); 38 } 39 /** If the mutex has not been release, release it now. 40 */ ~SkAutoMutexAcquire()41 ~SkAutoMutexAcquire() 42 { 43 if (fMutex) 44 fMutex->release(); 45 } 46 /** If the mutex has not been release, release it now. 47 */ release()48 void release() 49 { 50 if (fMutex) 51 { 52 fMutex->release(); 53 fMutex = NULL; 54 } 55 } 56 57 private: 58 SkBaseMutex* fMutex; 59 }; 60 61 #endif 62