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added mutex to protect reference-counter

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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@766 0778d3d1-df1d-0410-868b-ea421aaaa00d
This commit is contained in:
Tobias Doerffel
2008-03-04 11:28:58 +00:00
parent 974c312a7a
commit 74bc575ad1
1 changed files with 12 additions and 4 deletions
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16
include/shared_object.h
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@@ -2,6 +2,7 @@
* shared_object.h - class sharedObject for use among other objects
*
* Copyright (c) 2006-2007 Javier Serrano Polo <jasp00/at/users.sourceforge.net>
* Copyright (c) 2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
*
@@ -27,28 +28,34 @@
#define _SHARED_OBJECT_H
#include <QtCore/QMutex>
class sharedObject
{
public:
sharedObject( void ) :
m_reference_count( 1 )
m_referenceCount( 1 ),
m_lock()
{
}
template<class T>
static T * ref( T * _object )
{
_object->m_lock.lock();
// TODO: Use QShared
++_object->m_reference_count;
++_object->m_referenceCount;
_object->m_lock.unlock();
return( _object );
}
template<class T>
static void unref( T * _object )
{
bool delete_object = --_object->m_reference_count == 0;
_object->m_lock.lock();
bool delete_object = --_object->m_referenceCount <= 0;
_object->m_lock.unlock();
if ( delete_object )
{
delete _object;
@@ -57,7 +64,8 @@ public:
private:
unsigned m_reference_count;
int m_referenceCount;
QMutex m_lock;
} ;