2 * Implementation of the Microsoft Installer (msi.dll)
4 * Copyright 2002-2004 Mike McCormack for CodeWeavers
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include "wine/debug.h"
32 WINE_DEFAULT_DEBUG_CHANNEL(msi);
34 static CRITICAL_SECTION MSI_handle_cs;
35 static CRITICAL_SECTION_DEBUG MSI_handle_cs_debug =
38 { &MSI_handle_cs_debug.ProcessLocksList,
39 &MSI_handle_cs_debug.ProcessLocksList },
40 0, 0, { 0, (DWORD)(__FILE__ ": MSI_handle_cs") }
42 static CRITICAL_SECTION MSI_handle_cs = { &MSI_handle_cs_debug, -1, 0, 0, 0, 0 };
44 static CRITICAL_SECTION MSI_object_cs;
45 static CRITICAL_SECTION_DEBUG MSI_object_cs_debug =
48 { &MSI_object_cs_debug.ProcessLocksList,
49 &MSI_object_cs_debug.ProcessLocksList },
50 0, 0, { 0, (DWORD)(__FILE__ ": MSI_object_cs") }
52 static CRITICAL_SECTION MSI_object_cs = { &MSI_object_cs_debug, -1, 0, 0, 0, 0 };
54 typedef struct msi_handle_info_t
60 static msi_handle_info msihandletable[MSIMAXHANDLES];
62 MSIHANDLE alloc_msihandle( MSIOBJECTHDR *obj )
67 EnterCriticalSection( &MSI_handle_cs );
70 for(i=0; i<MSIMAXHANDLES; i++)
71 if( !msihandletable[i].obj )
73 if( (i>=MSIMAXHANDLES) || msihandletable[i].obj )
77 msihandletable[i].obj = obj;
78 msihandletable[i].dwThreadId = GetCurrentThreadId();
79 ret = (MSIHANDLE) (i+1);
81 TRACE("%p -> %ld\n", obj, ret );
83 LeaveCriticalSection( &MSI_handle_cs );
87 void *msihandle2msiinfo(MSIHANDLE handle, UINT type)
89 MSIOBJECTHDR *ret = NULL;
91 EnterCriticalSection( &MSI_handle_cs );
95 if( handle>=MSIMAXHANDLES )
97 if( !msihandletable[handle].obj )
99 if( msihandletable[handle].obj->magic != MSIHANDLE_MAGIC )
101 if( type && (msihandletable[handle].obj->type != type) )
103 ret = msihandletable[handle].obj;
104 msiobj_addref( ret );
107 LeaveCriticalSection( &MSI_handle_cs );
112 MSIHANDLE msiobj_findhandle( MSIOBJECTHDR *hdr )
119 EnterCriticalSection( &MSI_handle_cs );
120 for(i=0; (i<MSIMAXHANDLES) && !ret; i++)
121 if( msihandletable[i].obj == hdr )
123 LeaveCriticalSection( &MSI_handle_cs );
125 TRACE("%p -> %ld\n", hdr, ret);
127 msiobj_addref( hdr );
131 void *alloc_msiobject(UINT type, UINT size, msihandledestructor destroy )
135 info = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size );
138 info->magic = MSIHANDLE_MAGIC;
141 info->destructor = destroy;
147 void msiobj_addref( MSIOBJECTHDR *info )
154 if( info->magic != MSIHANDLE_MAGIC )
156 ERR("Invalid handle!\n");
160 InterlockedIncrement(&info->refcount);
163 void msiobj_lock( MSIOBJECTHDR *info )
165 EnterCriticalSection( &MSI_object_cs );
168 void msiobj_unlock( MSIOBJECTHDR *info )
170 LeaveCriticalSection( &MSI_object_cs );
173 int msiobj_release( MSIOBJECTHDR *info )
182 if( info->magic != MSIHANDLE_MAGIC )
184 ERR("Invalid handle!\n");
188 ret = InterlockedDecrement( &info->refcount );
191 if( info->destructor )
192 info->destructor( info );
193 HeapFree( GetProcessHeap(), 0, info );
194 TRACE("object %p destroyed\n", info);
200 /***********************************************************
201 * MsiCloseHandle [MSI.@]
203 UINT WINAPI MsiCloseHandle(MSIHANDLE handle)
206 UINT ret = ERROR_INVALID_HANDLE;
208 TRACE("%lx\n",handle);
210 EnterCriticalSection( &MSI_handle_cs );
212 info = msihandle2msiinfo(handle, 0);
216 if( info->magic != MSIHANDLE_MAGIC )
218 ERR("Invalid handle!\n");
222 msiobj_release( info );
223 msihandletable[handle-1].obj = NULL;
226 TRACE("handle %lx Destroyed\n", handle);
228 LeaveCriticalSection( &MSI_handle_cs );
230 msiobj_release( info );
235 /***********************************************************
236 * MsiCloseAllHandles [MSI.@]
238 * Closes all handles owned by the current thread
241 * The number of handles closed
243 UINT WINAPI MsiCloseAllHandles(void)
249 for(i=0; i<MSIMAXHANDLES; i++)
251 if(msihandletable[i].dwThreadId == GetCurrentThreadId())
253 MsiCloseHandle( i+1 );