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win32u: Introduce reference counting to struct adapter.
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b197bd3bf8
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75e62eb720
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@ -217,6 +217,7 @@ struct display_device
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struct adapter
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{
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LONG refcount;
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struct list entry;
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struct display_device dev;
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unsigned int id;
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@ -425,6 +426,21 @@ static void release_display_device_init_mutex( HANDLE mutex )
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NtClose( mutex );
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}
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static struct adapter *adapter_acquire( struct adapter *adapter )
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{
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InterlockedIncrement( &adapter->refcount );
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return adapter;
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}
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static void adapter_release( struct adapter *adapter )
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{
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if (!InterlockedDecrement( &adapter->refcount ))
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{
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free( adapter->modes );
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free( adapter );
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}
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}
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static BOOL write_adapter_mode( HKEY adapter_key, DWORD index, const DEVMODEW *mode )
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{
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WCHAR bufferW[MAX_PATH];
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@ -1450,6 +1466,7 @@ static void clear_display_devices(void)
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while (!list_empty( &monitors ))
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{
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monitor = LIST_ENTRY( list_head( &monitors ), struct monitor, entry );
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adapter_release( monitor->adapter );
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list_remove( &monitor->entry );
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free( monitor );
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}
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@ -1458,8 +1475,7 @@ static void clear_display_devices(void)
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{
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adapter = LIST_ENTRY( list_head( &adapters ), struct adapter, entry );
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list_remove( &adapter->entry );
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free( adapter->modes );
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free( adapter );
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adapter_release( adapter );
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}
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}
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@ -1493,12 +1509,12 @@ static BOOL update_display_cache_from_registry(void)
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for (adapter_id = 0;; adapter_id++)
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{
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if (!(adapter = calloc( 1, sizeof(*adapter) ))) break;
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adapter->refcount = 1;
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adapter->id = adapter_id;
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if (!read_display_adapter_settings( adapter_id, adapter ))
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{
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free( adapter->modes );
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free( adapter );
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adapter_release( adapter );
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break;
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}
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@ -1506,15 +1522,15 @@ static BOOL update_display_cache_from_registry(void)
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for (monitor_id = 0;; monitor_id++)
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{
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if (!(monitor = calloc( 1, sizeof(*monitor) ))) break;
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monitor->id = monitor_id;
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monitor->adapter = adapter;
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if (!read_monitor_settings( adapter, monitor_id, monitor ))
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{
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free( monitor );
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break;
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}
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monitor->id = monitor_id;
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monitor->adapter = adapter_acquire( adapter );
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LIST_FOR_EACH_ENTRY(monitor2, &monitors, struct monitor, entry)
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{
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if (EqualRect(&monitor2->rc_monitor, &monitor->rc_monitor))
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@ -1957,16 +1973,19 @@ LONG WINAPI NtUserGetDisplayConfigBufferSizes( UINT32 flags, UINT32 *num_path_in
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return ERROR_SUCCESS;
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}
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/* Find and acquire the adapter matching name, or primary adapter if name is NULL.
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* If not NULL, the returned adapter needs to be released with adapter_release.
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*/
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static struct adapter *find_adapter( UNICODE_STRING *name )
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{
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struct adapter *adapter;
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LIST_FOR_EACH_ENTRY(adapter, &adapters, struct adapter, entry)
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{
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if (!name || !name->Length) return adapter; /* use primary adapter */
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if (!name || !name->Length) return adapter_acquire( adapter ); /* use primary adapter */
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if (!wcsnicmp( name->Buffer, adapter->dev.device_name, name->Length / sizeof(WCHAR) ) &&
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!adapter->dev.device_name[name->Length / sizeof(WCHAR)])
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return adapter;
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return adapter_acquire( adapter );
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}
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return NULL;
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}
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@ -2010,6 +2029,7 @@ NTSTATUS WINAPI NtUserEnumDisplayDevices( UNICODE_STRING *device, DWORD index,
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break;
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}
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}
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adapter_release( adapter );
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}
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if (found)
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@ -2472,6 +2492,7 @@ LONG WINAPI NtUserChangeDisplaySettings( UNICODE_STRING *devname, DEVMODEW *devm
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if (!adapter || !modes)
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{
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WARN( "Invalid device name %s.\n", debugstr_us(devname) );
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if (adapter) adapter_release( adapter );
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return DISP_CHANGE_BADPARAM;
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}
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@ -2480,6 +2501,7 @@ LONG WINAPI NtUserChangeDisplaySettings( UNICODE_STRING *devname, DEVMODEW *devm
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else if (flags & (CDS_TEST | CDS_NORESET)) ret = DISP_CHANGE_SUCCESSFUL;
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else ret = apply_display_settings( device_name, &full_mode, hwnd, flags, lparam );
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free( modes );
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adapter_release( adapter );
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if (ret) ERR( "Changing %s display settings returned %d.\n", debugstr_us(devname), ret );
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return ret;
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@ -2519,6 +2541,7 @@ BOOL WINAPI NtUserEnumDisplaySettings( UNICODE_STRING *device, DWORD index, DEVM
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if (index == ENUM_REGISTRY_SETTINGS) ret = read_registry_settings( adapter_path, devmode );
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else if (index != ENUM_CURRENT_SETTINGS) ret = user_driver->pEnumDisplaySettingsEx( device_name, index, devmode, flags );
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else ret = user_driver->pGetCurrentDisplaySettings( device_name, devmode );
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adapter_release( adapter );
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if (!ret) WARN( "Failed to query %s display settings.\n", debugstr_w(device_name) );
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else TRACE( "position %dx%d, resolution %ux%u, frequency %u, depth %u, orientation %#x.\n",
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