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 <stddef.h>
  23 #include <dpl/read_write_mutex.h>
  24 #include <dpl/assert.h>
  25
  26 namespace DPL
  27 {
  28 ReadWriteMutex::ReadWriteMutex()
  29 {
  30     if (pthread_rwlock_init(&m_rwlock, NULL) != 0)
  31         Throw(Exception::CreateFailed);
  32 }
  33
  34 ReadWriteMutex::~ReadWriteMutex()
  35 {
  36     if (pthread_rwlock_destroy(&m_rwlock) != 0)
  37         Throw(Exception::DestroyFailed);
  38 }
  39
  40 void ReadWriteMutex::ReadLock() const
  41 {
  42     if (pthread_rwlock_rdlock(&m_rwlock) != 0)
  43         Throw(Exception::ReadLockFailed);
  44 }
  45
  46 void ReadWriteMutex::WriteLock() const
  47 {
  48     if (pthread_rwlock_wrlock(&m_rwlock) != 0)
  49         Throw(Exception::WriteLockFailed);
  50 }
  51
  52 void ReadWriteMutex::Unlock() const
  53 {
  54     if (pthread_rwlock_unlock(&m_rwlock) != 0)
  55         Throw(Exception::UnlockFailed);
  56 }
  57
  58 ReadWriteMutex::ScopedReadLock::ScopedReadLock(ReadWriteMutex *mutex)
  59     : m_mutex(mutex)
  60 {
  61     Assert(mutex != NULL);
  62     m_mutex->ReadLock();
  63 }
  64
  65 ReadWriteMutex::ScopedReadLock::~ScopedReadLock()
  66 {
  67     m_mutex->Unlock();
  68 }
  69
  70 ReadWriteMutex::ScopedWriteLock::ScopedWriteLock(ReadWriteMutex *mutex)
  71     : m_mutex(mutex)
  72 {
  73     Assert(mutex != NULL);
  74     m_mutex->WriteLock();
  75 }
  76
  77 ReadWriteMutex::ScopedWriteLock::~ScopedWriteLock()
  78 {
  79     m_mutex->Unlock();
  80 }
  81 } // namespace DPL