1 /* 2 * Copyright (c) 2007-2017, Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included 12 * in all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 //! 23 //! \file cm_csync.h 24 //! \brief Contains CSync and CLock definitions 25 //! 26 27 #ifndef MEDIADRIVER_LINUX_COMMON_CM_CMCSYNC_H_ 28 #define MEDIADRIVER_LINUX_COMMON_CM_CMCSYNC_H_ 29 30 #include "cm_debug.h" 31 32 namespace CMRT_UMD 33 { 34 class CSync 35 { 36 public: CSync()37 CSync() 38 { 39 int32_t ret = 0; 40 ret = pthread_mutex_init(&m_criticalSection, nullptr); 41 if (ret != 0) 42 { 43 CM_ASSERTMESSAGE("Error: Failed in pthread_mutex_init."); 44 } 45 } 46 ~CSync()47 ~CSync() 48 { 49 int32_t ret = 0 ; 50 ret = pthread_mutex_destroy(&m_criticalSection); 51 if (ret != 0) 52 { 53 CM_ASSERTMESSAGE("Error: Failed in pthread_mutex_destroy."); 54 } 55 } 56 Acquire()57 void Acquire() 58 { 59 int32_t ret = 0; 60 ret = pthread_mutex_lock(&m_criticalSection); 61 if (ret != 0) 62 { 63 CM_ASSERTMESSAGE("Error: Failed in pthread_mutex_lock."); 64 } 65 } 66 Release()67 void Release() 68 { 69 int32_t ret = 0; 70 ret = pthread_mutex_unlock(&m_criticalSection); 71 if (ret != 0) 72 { 73 CM_ASSERTMESSAGE("Error: Failed in pthread_mutex_unlock."); 74 } 75 } 76 77 private: 78 pthread_mutex_t m_criticalSection; 79 }; 80 81 class CLock 82 { 83 public: CLock(CSync & refSync)84 CLock(CSync &refSync) : m_refSync(refSync) { Lock(); } ~CLock()85 ~CLock() { Unlock(); } 86 87 private: 88 CSync &m_refSync; // Synchronization object 89 90 CLock(const CLock &refcSource); 91 CLock &operator=(const CLock &refcSource); Lock()92 void Lock() { m_refSync.Acquire(); } Unlock()93 void Unlock() { m_refSync.Release(); } 94 }; 95 }; //namespace CMRT_UMD 96 97 #endif // #ifndef MEDIADRIVER_LINUX_COMMON_CM_CMCSYNC_H_ 98