1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 #include "stdafx.h"

    19 #include "mutex.h"

    20 

    21 Mutex::Mutex()

    22 {

    23 	m_hMutex = NULL;

    24 	m_waitTimeout = 0L;

    25 	m_mutexOpen = FALSE;

    26 }

    27 Mutex::~Mutex()

    28 {

    29 	Close();

    30 }

    31 

    32 BOOL Mutex::Open(CHAR *mutexName, DWORD waitTimeout)

    33 {

    34 #ifdef WIN32

    35 	m_hMutex = ::CreateMutex(NULL, FALSE, mutexName);

    36 #else

    37 #error non Win32

    38 #endif

    39 	if (m_hMutex == NULL) 

    40 		m_mutexOpen = FALSE;

    41 	else

    42 	{

    43 		m_mutexOpen = TRUE;

    44 		m_waitTimeout = waitTimeout;

    45 	}

    46 

    47 	return m_mutexOpen;

    48 }

    49 void Mutex::Close()

    50 {

    51 	if (m_mutexOpen)

    52 	{

    53 #ifdef WIN32

    54 		::ReleaseMutex(m_hMutex);

    55 		::CloseHandle(m_hMutex);

    56 #else

    57 #error non WIN32

    58 #endif

    59 		m_hMutex = NULL;

    60 		m_mutexOpen = FALSE;

    61 	}

    62 }

    63 BOOL Mutex::Wait()

    64 {

    65 #ifdef WIN32

    66 	DWORD dwWaitResult = ::WaitForSingleObject(m_hMutex, m_waitTimeout); 

    67 	if (dwWaitResult == WAIT_OBJECT_0)

    68 	{

    69 		return TRUE;

    70 	}

    71 	return FALSE;

    72 #else

    73 #error non WIN32

    74 #endif

    75 }

    76 BOOL Mutex::Release()

    77 {

    78 	BOOL ret = FALSE;

    79 #ifdef WIN32

    80 	ret = ::ReleaseMutex(m_hMutex);

    81 #else

    82 #error non WIN32

    83 #endif

    84 

    85 	return ret;

    86 }