1 /*

     2 * Copyright (c) 2008 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 "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:  ScopedLocks

    15 *

    16 */

    17 

    18 #ifndef SCOPEDLOCKS_H

    19 #define SCOPEDLOCKS_H

    20 

    21 #include <pthread.h>

    22 

    23 #include "logger.h"

    24 

    25 namespace java

    26 {

    27 namespace util

    28 {

    29 

    30 class ScopedMutex

    31 {

    32 public:

    33     ScopedMutex()

    34     {

    35         pthread_mutexattr_t mutex_attr;

    36         pthread_mutexattr_init(&mutex_attr);

    37         pthread_mutexattr_settype(&mutex_attr, PTHREAD_MUTEX_RECURSIVE);

    38         pthread_mutex_init(&mMutex, &mutex_attr);

    39         pthread_mutexattr_destroy(&mutex_attr);

    40     }

    41     ~ScopedMutex()

    42     {

    43         pthread_mutex_destroy(&mMutex);

    44     }

    45     int lock()

    46     {

    47         return pthread_mutex_lock(&mMutex);

    48     }

    49     int unlock()

    50     {

    51         return pthread_mutex_unlock(&mMutex);

    52     }

    53 

    54 private:

    55     pthread_mutex_t mMutex;

    56 };

    57 

    58 class ScopedLock

    59 {

    60 public:

    61     ScopedLock(ScopedMutex& aMutex):mMutex(aMutex)

    62     {

    63         int status = mMutex.lock();

    64         if (0 != status)

    65         {

    66             ELOG1(EUtils, "ScopedLock().mutex.lock() failed with %d", status);

    67         }

    68     }

    69     ~ScopedLock()

    70     {

    71         int status = mMutex.unlock();

    72         if (0 != status)

    73         {

    74             ELOG1(EUtils, "ScopedLock().mutex.unlock() failed with %d", status);

    75         }

    76     }

    77 private:

    78     ScopedMutex& mMutex;

    79 };

    80 

    81 } //end namespace util

    82 } //end namespace java

    83 

    84 #endif // SCOPEDLOCKS_H

    85