modules/core/src/read_write_mutex.cpp

   1 /*
   2  * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  *    Licensed under the Apache License, Version 2.0 (the "License");
   5  *    you may not use this file except in compliance with the License.
   6  *    You may obtain a copy of the License at
   7  *
   8  *        http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *    Unless required by applicable law or agreed to in writing, software
  11  *    distributed under the License is distributed on an "AS IS" BASIS,
  12  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *    See the License for the specific language governing permissions and
  14  *    limitations under the License.
  15  */
  16 /*
  17  * @file        read_write_mutex.cpp
  18  * @author      Przemyslaw Dobrowolski (p.dobrowolsk@samsung.com)
  19  * @version     1.0
  20  * @brief       This file is the implementation file of read write mutex
  21  */
  22 #include <dpl/read_write_mutex.h>
  23 #include <dpl/assert.h>
  24
  25 namespace DPL
  26 {
  27 ReadWriteMutex::ReadWriteMutex()
  28 {
  29     if (pthread_rwlock_init(&m_rwlock, NULL) != 0)
  30         Throw(Exception::CreateFailed);
  31 }
  32
  33 ReadWriteMutex::~ReadWriteMutex()
  34 {
  35     if (pthread_rwlock_destroy(&m_rwlock) != 0)
  36         Throw(Exception::DestroyFailed);
  37 }
  38
  39 void ReadWriteMutex::ReadLock() const
  40 {
  41     if (pthread_rwlock_rdlock(&m_rwlock) != 0)
  42         Throw(Exception::ReadLockFailed);
  43 }
  44
  45 void ReadWriteMutex::WriteLock() const
  46 {
  47     if (pthread_rwlock_wrlock(&m_rwlock) != 0)
  48         Throw(Exception::WriteLockFailed);
  49 }
  50
  51 void ReadWriteMutex::Unlock() const
  52 {
  53     if (pthread_rwlock_unlock(&m_rwlock) != 0)
  54         Throw(Exception::UnlockFailed);
  55 }
  56
  57 ReadWriteMutex::ScopedReadLock::ScopedReadLock(ReadWriteMutex *mutex)
  58     : m_mutex(mutex)
  59 {
  60     Assert(mutex != NULL);
  61     m_mutex->ReadLock();
  62 }
  63
  64 ReadWriteMutex::ScopedReadLock::~ScopedReadLock()
  65 {
  66     m_mutex->Unlock();
  67 }
  68
  69 ReadWriteMutex::ScopedWriteLock::ScopedWriteLock(ReadWriteMutex *mutex)
  70     : m_mutex(mutex)
  71 {
  72     Assert(mutex != NULL);
  73     m_mutex->WriteLock();
  74 }
  75
  76 ReadWriteMutex::ScopedWriteLock::~ScopedWriteLock()
  77 {
  78     m_mutex->Unlock();
  79 }
  80 } // namespace DPL