+ if( config_GetInt( p_this, "high-priority" ) )
+ {
+ if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
+ || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
+ {
+ msg_Dbg( p_this, "raised process priority" );
+ }
+ else
+ {
+ msg_Dbg( p_this, "could not raise process priority" );
+ }
+ }
+
+ if( config_GetInt( p_this, "one-instance" ) )
+ {
+ HANDLE hmutex;
+
+ msg_Info( p_this, "one instance mode ENABLED");
+
+ /* Use a named mutex to check if another instance is already running */
+ if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
+ {
+ /* Failed for some reason. Just ignore the option and go on as
+ * normal. */
+ msg_Err( p_this, "one instance mode DISABLED "
+ "(mutex couldn't be created)" );
+ return;
+ }
+
+ if( GetLastError() != ERROR_ALREADY_EXISTS )
+ {
+ /* We are the 1st instance. */
+ vlc_object_t *p_helper =
+ (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
+
+ /* Run the helper thread */
+ if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
+ VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
+ {
+ msg_Err( p_this, "one instance mode DISABLED "
+ "(IPC helper thread couldn't be created)" );
+
+ }
+
+ /* Initialization done.
+ * Release the mutex to unblock other instances */
+ ReleaseMutex( hmutex );
+ }
+ else
+ {
+ /* Another instance is running */
+
+ HWND ipcwindow;
+
+ /* Wait until the 1st instance is initialized */
+ WaitForSingleObject( hmutex, INFINITE );
+
+ /* Locate the window created by the IPC helper thread of the
+ * 1st instance */
+ if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
+ {
+ msg_Err( p_this, "one instance mode DISABLED "
+ "(couldn't find 1st instance of program)" );
+ ReleaseMutex( hmutex );
+ return;
+ }
+
+ /* We assume that the remaining parameters are filenames
+ * and their input options */
+ if( *pi_argc - 1 >= optind )
+ {
+ COPYDATASTRUCT wm_data;
+ int i_opt, i_data;
+ char *p_data;
+
+ i_data = sizeof(int);
+ for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
+ {
+ i_data += sizeof(int);
+ i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
+ }
+
+ p_data = (char *)malloc( i_data );
+ *((int *)&p_data[0]) = *pi_argc - optind;
+ i_data = sizeof(int);
+ for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
+ {
+ int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
+ *((int *)&p_data[i_data]) = i_len;
+ i_data += sizeof(int);
+ memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
+ i_data += i_len;
+ }
+
+ /* Send our playlist items to the 1st instance */
+ wm_data.dwData = 0;
+ wm_data.cbData = i_data;
+ wm_data.lpData = p_data;
+ SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
+ }
+
+ /* Initialization done.
+ * Release the mutex to unblock other instances */
+ ReleaseMutex( hmutex );
+
+ /* Bye bye */
+ system_End( p_this );
+ exit( 0 );
+ }
+ }
+
+#endif
+}
+
+static void IPCHelperThread( vlc_object_t *p_this )
+{
+ HWND ipcwindow;
+ MSG message;
+
+ ipcwindow =
+ CreateWindow( _T("STATIC"), /* name of window class */
+ _T("VLC ipc ") _T(VERSION), /* window title bar text */
+ 0, /* window style */
+ 0, /* default X coordinate */
+ 0, /* default Y coordinate */
+ 0, /* window width */
+ 0, /* window height */
+ NULL, /* no parent window */
+ NULL, /* no menu in this window */
+ GetModuleHandle(NULL), /* handle of this program instance */
+ NULL ); /* sent to WM_CREATE */
+
+ SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
+ SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
+
+ /* Signal the creation of the thread and events queue */
+ vlc_thread_ready( p_this );
+
+ while( GetMessage( &message, NULL, 0, 0 ) )