common/JackMutex.h

   1 /*
   2  Copyright (C) 2006 Grame
   3
   4  This library is free software; you can redistribute it and/or
   5  modify it under the terms of the GNU Lesser General Public
   6  License as published by the Free Software Foundation; either
   7  version 2.1 of the License, or (at your option) any later version.
   8
   9  This library is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  Lesser General Public License for more details.
  13
  14  You should have received a copy of the GNU Lesser General Public
  15  License along with this library; if not, write to the Free Software
  16  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17
  18  Grame Research Laboratory, 9 rue du Garet, 69001 Lyon - France
  19  grame@grame.fr
  20 */
  21
  22 #ifndef __JackMutex__
  23 #define __JackMutex__
  24
  25 #include <assert.h>
  26 #include "JackError.h"
  27 #include "JackPlatformPlug.h"
  28
  29
  30 namespace Jack
  31 {
  32 /*!
  33 \brief Base class for "lockable" objects.
  34 */
  35
  36 class JackLockAble
  37 {
  38
  39     protected:
  40
  41         JackMutex fMutex;
  42
  43         JackLockAble(const char* name = NULL)
  44             :fMutex(name)
  45         {}
  46         ~JackLockAble()
  47         {}
  48
  49     public:
  50
  51         bool Lock()
  52         {
  53             return fMutex.Lock();
  54         }
  55
  56         bool Trylock()
  57         {
  58             return fMutex.Trylock();
  59         }
  60
  61         bool Unlock()
  62         {
  63             return fMutex.Unlock();
  64         }
  65
  66 };
  67
  68 class JackLock
  69 {
  70     private:
  71
  72         JackLockAble* fObj;
  73
  74     public:
  75
  76         JackLock(JackLockAble* obj): fObj(obj)
  77         {
  78             fObj->Lock();
  79         }
  80
  81         JackLock(const JackLockAble* obj): fObj((JackLockAble*)obj)
  82         {
  83             fObj->Lock();
  84         }
  85
  86         ~JackLock()
  87         {
  88             fObj->Unlock();
  89         }
  90 };
  91
  92
  93 } // namespace
  94
  95 #endif