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/*
* Implementation of the Microsoft Installer (msi.dll)
*
* Copyright 2002-2004 Mike McCormack for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <assert.h>
#include "debug.h"
#include "libmsi.h"
#include "msipriv.h"
void *alloc_msiobject(unsigned size, msihandledestructor destroy )
{
LibmsiObject *info;
info = msi_alloc_zero( size );
if( info )
{
info->magic = 0xC007C0DE;
info->refcount = 1;
info->destructor = destroy;
}
return info;
}
void msiobj_addref( LibmsiObject *info )
{
if( !info )
return;
assert(info->magic == 0xC007C0DE);
__sync_add_and_fetch(&info->refcount, 1);
}
int msiobj_release( LibmsiObject *obj )
{
int ret;
if( !obj )
return -1;
assert(obj->magic == 0xC007C0DE);
ret = __sync_sub_and_fetch( &obj->refcount, 1 );
if( ret==0 )
{
if( obj->destructor )
obj->destructor( obj );
obj->magic = 0xDEADB0D7;
msi_free( obj );
TRACE("object %p destroyed\n", obj);
}
return ret;
}
/***********************************************************
* libmsi_unref [MSI.@]
*/
LibmsiResult libmsi_unref(void *obj)
{
TRACE("%x\n",obj);
if( obj )
msiobj_release( obj );
return LIBMSI_RESULT_SUCCESS;
}
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