winemac: Add support for "query" events which wait for synchronous responses.

dlls/winemac.drv/cocoa_app.h

@@ -32,6 +32,10 @@
 
 @interface WineApplication : NSApplication <NSApplicationDelegate>
 {
+    CFRunLoopSourceRef requestSource;
+    NSMutableArray* requests;
+    dispatch_queue_t requestsManipQueue;
+
     NSMutableArray* eventQueues;
     NSLock*         eventQueuesLock;
 
@@ -83,6 +87,8 @@
 
     - (void) windowGotFocus:(WineWindow*)window;
 
+    - (BOOL) waitUntilQueryDone:(int*)done timeout:(NSDate*)timeout;
+
     - (void) keyboardSelectionDidChange;
 
     - (void) flipRect:(NSRect*)rect;
@@ -93,7 +99,6 @@
 
 @end
 
-void OnMainThread(dispatch_block_t block);
 void OnMainThreadAsync(dispatch_block_t block);
 
 void LogError(const char* func, NSString* format, ...);

dlls/winemac.drv/cocoa_app.m

@@ -26,6 +26,9 @@
 #import "cocoa_window.h"
 
 
+static NSString* const WineAppWaitQueryResponseMode = @"WineAppWaitQueryResponseMode";
+
+
 int macdrv_err_on;
 
 
@@ -56,6 +59,8 @@ int macdrv_err_on;
 @property (copy, nonatomic) NSArray* cursorFrames;
 @property (retain, nonatomic) NSTimer* cursorTimer;
 
+    static void PerformRequest(void *info);
+
 @end
 
 
@@ -70,6 +75,20 @@ int macdrv_err_on;
         self = [super init];
         if (self != nil)
         {
+            CFRunLoopSourceContext context = { 0 };
+            context.perform = PerformRequest;
+            requestSource = CFRunLoopSourceCreate(NULL, 0, &context);
+            if (!requestSource)
+            {
+                [self release];
+                return nil;
+            }
+            CFRunLoopAddSource(CFRunLoopGetMain(), requestSource, kCFRunLoopCommonModes);
+            CFRunLoopAddSource(CFRunLoopGetMain(), requestSource, (CFStringRef)WineAppWaitQueryResponseMode);
+
+            requests =  [[NSMutableArray alloc] init];
+            requestsManipQueue = dispatch_queue_create("org.winehq.WineAppRequestManipQueue", NULL);
+
             eventQueues = [[NSMutableArray alloc] init];
             eventQueuesLock = [[NSLock alloc] init];
 
@@ -80,8 +99,8 @@ int macdrv_err_on;
 
             warpRecords = [[NSMutableArray alloc] init];
 
-            if (!eventQueues || !eventQueuesLock || !keyWindows || !orderedWineWindows ||
-                !originalDisplayModes || !warpRecords)
+            if (!requests || !requestsManipQueue || !eventQueues || !eventQueuesLock ||
+                !keyWindows || !orderedWineWindows || !originalDisplayModes || !warpRecords)
             {
                 [self release];
                 return nil;
@@ -100,6 +119,13 @@ int macdrv_err_on;
         [keyWindows release];
         [eventQueues release];
         [eventQueuesLock release];
+        if (requestsManipQueue) dispatch_release(requestsManipQueue);
+        [requests release];
+        if (requestSource)
+        {
+            CFRunLoopSourceInvalidate(requestSource);
+            CFRelease(requestSource);
+        }
         [super dealloc];
     }
 
@@ -146,6 +172,18 @@ int macdrv_err_on;
         }
     }
 
+    - (BOOL) waitUntilQueryDone:(int*)done timeout:(NSDate*)timeout
+    {
+        PerformRequest(NULL);
+
+        do
+        {
+            [[NSRunLoop currentRunLoop] runMode:WineAppWaitQueryResponseMode beforeDate:timeout];
+        } while (!*done && [timeout timeIntervalSinceNow] >= 0);
+
+        return *done;
+    }
+
     - (BOOL) registerEventQueue:(WineEventQueue*)queue
     {
         [eventQueuesLock lock];
@@ -1102,16 +1140,36 @@ int macdrv_err_on;
         }];
     }
 
-@end
-
 /***********************************************************************
- *              OnMainThread
+ *              PerformRequest
  *
- * Run a block on the main thread synchronously.
+ * Run-loop-source perform callback.  Pull request blocks from the
+ * array of queued requests and invoke them.
  */
-void OnMainThread(dispatch_block_t block)
+static void PerformRequest(void *info)
 {
-    dispatch_sync(dispatch_get_main_queue(), block);
+    WineApplication* app = (WineApplication*)NSApp;
+
+    for (;;)
+    {
+        __block dispatch_block_t block;
+
+        dispatch_sync(app->requestsManipQueue, ^{
+            if ([app->requests count])
+            {
+                block = (dispatch_block_t)[[app->requests objectAtIndex:0] retain];
+                [app->requests removeObjectAtIndex:0];
+            }
+            else
+                block = nil;
+        });
+
+        if (!block)
+            break;
+
+        block();
+        [block release];
+    }
 }
 
 /***********************************************************************
@@ -1121,9 +1179,19 @@ void OnMainThread(dispatch_block_t block)
  */
 void OnMainThreadAsync(dispatch_block_t block)
 {
-    dispatch_async(dispatch_get_main_queue(), block);
+    WineApplication* app = (WineApplication*)NSApp;
+
+    block = [block copy];
+    dispatch_sync(app->requestsManipQueue, ^{
+        [app->requests addObject:block];
+    });
+    [block release];
+    CFRunLoopSourceSignal(app->requestSource);
+    CFRunLoopWakeUp(CFRunLoopGetMain());
 }
 
+@end
+
 /***********************************************************************
  *              LogError
  */

dlls/winemac.drv/cocoa_clipboard.m

@@ -20,6 +20,7 @@
 
 #include "macdrv_cocoa.h"
 #import "cocoa_app.h"
+#import "cocoa_event.h"
 
 
 static int owned_change_count = -1;

dlls/winemac.drv/cocoa_event.h

@@ -28,9 +28,16 @@
     NSLock*         eventsLock;
 
     int             fds[2]; /* Pipe signaling when there are events queued. */
+    int             kq; /* kqueue for waiting in OnMainThread(). */
+
+    macdrv_event_handler event_handler;
 }
 
     - (void) postEvent:(const macdrv_event*)inEvent;
     - (void) discardEventsMatchingMask:(macdrv_event_mask)mask forWindow:(NSWindow*)window;
 
+    - (BOOL) query:(macdrv_query*)query timeout:(NSTimeInterval)timeout;
+
 @end
+
+void OnMainThread(dispatch_block_t block);

dlls/winemac.drv/cocoa_event.m

@@ -29,6 +29,9 @@
 #import "cocoa_window.h"
 
 
+static NSString* const WineEventQueueThreadDictionaryKey = @"WineEventQueueThreadDictionaryKey";
+
+
 @interface MacDrvEvent : NSObject
 {
 @public
@@ -58,11 +61,24 @@
 
     - (id) init
     {
+        [self doesNotRecognizeSelector:_cmd];
+        [self release];
+        return nil;
+    }
+
+    - (id) initWithEventHandler:(macdrv_event_handler)handler
+    {
+        NSParameterAssert(handler != nil);
+
         self = [super init];
         if (self != nil)
         {
-            fds[0] = fds[1] = -1;
+            struct kevent kev;
+            int rc;
+
+            fds[0] = fds[1] = kq = -1;
 
+            event_handler = handler;
             events = [[NSMutableArray alloc] init];
             eventsLock = [[NSLock alloc] init];
 
@@ -81,6 +97,24 @@
                 [self release];
                 return nil;
             }
+
+            kq = kqueue();
+            if (kq < 0)
+            {
+                [self release];
+                return nil;
+            }
+
+            EV_SET(&kev, fds[0], EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, 0);
+            do
+            {
+                rc = kevent(kq, &kev, 1, NULL, 0, NULL);
+            } while (rc == -1 && errno == EINTR);
+            if (rc == -1)
+            {
+                [self release];
+                return nil;
+            }
         }
         return self;
     }
@@ -90,6 +124,7 @@
         [events release];
         [eventsLock release];
 
+        if (kq != -1) close(kq);
         if (fds[0] != -1) close(fds[0]);
         if (fds[1] != -1) close(fds[1]);
 
@@ -217,6 +252,69 @@
         [eventsLock unlock];
     }
 
+    - (BOOL) query:(macdrv_query*)query timeout:(NSTimeInterval)timeout
+    {
+        macdrv_event event;
+        NSDate* timeoutDate = [NSDate dateWithTimeIntervalSinceNow:timeout];
+        BOOL timedout;
+
+        event.type = QUERY_EVENT;
+        event.window = (macdrv_window)[(WineWindow*)query->window retain];
+        event.query_event.query = macdrv_retain_query(query);
+        query->done = FALSE;
+
+        [self postEvent:&event];
+        timedout = ![NSApp waitUntilQueryDone:&query->done timeout:timeoutDate];
+        return !timedout && query->status;
+    }
+
+
+/***********************************************************************
+ *              OnMainThread
+ *
+ * Run a block on the main thread synchronously.
+ */
+void OnMainThread(dispatch_block_t block)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    NSMutableDictionary* threadDict = [[NSThread currentThread] threadDictionary];
+    WineEventQueue* queue = [threadDict objectForKey:WineEventQueueThreadDictionaryKey];
+    __block BOOL finished;
+
+    if (!queue)
+    {
+        /* Fall back to synchronous dispatch without handling query events. */
+        dispatch_sync(dispatch_get_main_queue(), block);
+        [pool release];
+        return;
+    }
+
+    finished = FALSE;
+    OnMainThreadAsync(^{
+        block();
+        finished = TRUE;
+        [queue signalEventAvailable];
+    });
+
+    while (!finished)
+    {
+        MacDrvEvent* macDrvEvent;
+        struct kevent kev;
+
+        while (!finished &&
+               (macDrvEvent = [queue getEventMatchingMask:event_mask_for_type(QUERY_EVENT)]))
+        {
+            queue->event_handler(&macDrvEvent->event);
+            macdrv_cleanup_event(&macDrvEvent->event);
+        }
+
+        if (!finished)
+            kevent(queue->kq, NULL, 0, &kev, 1, NULL);
+    }
+
+    [pool release];
+}
+
 
 /***********************************************************************
  *              macdrv_create_event_queue
@@ -224,15 +322,22 @@
  * Register this thread with the application on the main thread, and set
  * up an event queue on which it can deliver events to this thread.
  */
-macdrv_event_queue macdrv_create_event_queue(void)
+macdrv_event_queue macdrv_create_event_queue(macdrv_event_handler handler)
 {
     NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    NSMutableDictionary* threadDict = [[NSThread currentThread] threadDictionary];
 
-    WineEventQueue* queue = [[WineEventQueue alloc] init];
-    if (queue && ![NSApp registerEventQueue:queue])
+    WineEventQueue* queue = [threadDict objectForKey:WineEventQueueThreadDictionaryKey];
+    if (!queue)
     {
-        [queue release];
-        queue = nil;
+        queue = [[[WineEventQueue alloc] initWithEventHandler:handler] autorelease];
+        if (queue)
+        {
+            if ([NSApp registerEventQueue:queue])
+                [threadDict setObject:queue forKey:WineEventQueueThreadDictionaryKey];
+            else
+                queue = nil;
+        }
     }
 
     [pool release];
@@ -249,9 +354,10 @@ void macdrv_destroy_event_queue(macdrv_event_queue queue)
 {
     NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
     WineEventQueue* q = (WineEventQueue*)queue;
+    NSMutableDictionary* threadDict = [[NSThread currentThread] threadDictionary];
 
     [NSApp unregisterEventQueue:q];
-    [q release];
+    [threadDict removeObjectForKey:WineEventQueueThreadDictionaryKey];
 
     [pool release];
 }
@@ -308,6 +414,9 @@ void macdrv_cleanup_event(macdrv_event *event)
         case KEYBOARD_CHANGED:
             CFRelease(event->keyboard_changed.uchr);
             break;
+        case QUERY_EVENT:
+            macdrv_release_query(event->query_event.query);
+            break;
         case WINDOW_GOT_FOCUS:
             [(NSMutableSet*)event->window_got_focus.tried_windows release];
             break;
@@ -318,4 +427,50 @@ void macdrv_cleanup_event(macdrv_event *event)
     [pool release];
 }
 
+/***********************************************************************
+ *              macdrv_create_query
+ */
+macdrv_query* macdrv_create_query(void)
+{
+    macdrv_query *query;
+
+    query = calloc(1, sizeof(*query));
+    query->refs = 1;
+    return query;
+}
+
+/***********************************************************************
+ *              macdrv_retain_query
+ */
+macdrv_query* macdrv_retain_query(macdrv_query *query)
+{
+    OSAtomicIncrement32Barrier(&query->refs);
+    return query;
+}
+
+/***********************************************************************
+ *              macdrv_release_query
+ */
+void macdrv_release_query(macdrv_query *query)
+{
+    if (OSAtomicDecrement32Barrier(&query->refs) <= 0)
+    {
+        [(WineWindow*)query->window release];
+        free(query);
+    }
+}
+
+/***********************************************************************
+ *              macdrv_set_query_done
+ */
+void macdrv_set_query_done(macdrv_query *query)
+{
+    macdrv_retain_query(query);
+
+    OnMainThreadAsync(^{
+        query->done = TRUE;
+        macdrv_release_query(query);
+    });
+}
+
 @end

dlls/winemac.drv/cocoa_opengl.m

@@ -21,7 +21,7 @@
 #import "cocoa_opengl.h"
 
 #include "macdrv_cocoa.h"
-#include "cocoa_app.h"
+#include "cocoa_event.h"
 
 
 @interface WineOpenGLContext ()

dlls/winemac.drv/event.c

@@ -41,6 +41,7 @@ static const char *dbgstr_event(int type)
         "MOUSE_MOVED",
         "MOUSE_MOVED_ABSOLUTE",
         "MOUSE_SCROLL",
+        "QUERY_EVENT",
         "WINDOW_CLOSE_REQUESTED",
         "WINDOW_DID_MINIMIZE",
         "WINDOW_DID_UNMINIMIZE",
@@ -94,11 +95,39 @@ static macdrv_event_mask get_event_mask(DWORD mask)
         event_mask |= event_mask_for_type(WINDOW_LOST_FOCUS);
     }
 
+    if (mask & QS_SENDMESSAGE)
+    {
+        event_mask |= event_mask_for_type(QUERY_EVENT);
+    }
+
     return event_mask;
 }
 
 
 /***********************************************************************
+ *              macdrv_query_event
+ *
+ * Handler for QUERY_EVENT queries.
+ */
+static void macdrv_query_event(HWND hwnd, macdrv_event *event)
+{
+    BOOL success = FALSE;
+    macdrv_query *query = event->query_event.query;
+
+    switch (query->type)
+    {
+        default:
+            FIXME("unrecognized query type %d\n", query->type);
+            break;
+    }
+
+    TRACE("success %d\n", success);
+    query->status = success;
+    macdrv_set_query_done(query);
+}
+
+
+/***********************************************************************
  *              macdrv_handle_event
  */
 void macdrv_handle_event(macdrv_event *event)
@@ -138,6 +167,9 @@ void macdrv_handle_event(macdrv_event *event)
     case MOUSE_SCROLL:
         macdrv_mouse_scroll(hwnd, event);
         break;
+    case QUERY_EVENT:
+        macdrv_query_event(hwnd, event);
+        break;
     case WINDOW_CLOSE_REQUESTED:
         macdrv_window_close_requested(hwnd);
         break;

dlls/winemac.drv/macdrv.h

@@ -138,6 +138,8 @@ extern struct window_surface *create_surface(macdrv_window window, const RECT *r
 extern void set_window_surface(macdrv_window window, struct window_surface *window_surface) DECLSPEC_HIDDEN;
 extern void set_surface_use_alpha(struct window_surface *window_surface, BOOL use_alpha) DECLSPEC_HIDDEN;
 
+extern void macdrv_handle_event(macdrv_event *event) DECLSPEC_HIDDEN;
+
 extern void macdrv_window_close_requested(HWND hwnd) DECLSPEC_HIDDEN;
 extern void macdrv_window_frame_changed(HWND hwnd, CGRect frame) DECLSPEC_HIDDEN;
 extern void macdrv_window_got_focus(HWND hwnd, const macdrv_event *event) DECLSPEC_HIDDEN;

dlls/winemac.drv/macdrv_cocoa.h

@@ -104,6 +104,7 @@ typedef struct macdrv_opaque_event_queue* macdrv_event_queue;
 typedef struct macdrv_opaque_view* macdrv_view;
 typedef struct macdrv_opaque_opengl_context* macdrv_opengl_context;
 struct macdrv_event;
+struct macdrv_query;
 
 struct macdrv_display {
     CGDirectDisplayID displayID;
@@ -145,6 +146,7 @@ enum {
     MOUSE_MOVED,
     MOUSE_MOVED_ABSOLUTE,
     MOUSE_SCROLL,
+    QUERY_EVENT,
     WINDOW_CLOSE_REQUESTED,
     WINDOW_DID_MINIMIZE,
     WINDOW_DID_UNMINIMIZE,
@@ -193,6 +195,9 @@ typedef struct macdrv_event {
             unsigned long   time_ms;
         }                                           mouse_scroll;
         struct {
+            struct macdrv_query *query;
+        }                                           query_event;
+        struct {
             CGRect frame;
         }                                           window_frame_changed;
         struct {
@@ -202,12 +207,26 @@ typedef struct macdrv_event {
     };
 } macdrv_event;
 
+enum {
+    NUM_QUERY_TYPES
+};
+
+typedef struct macdrv_query {
+    int                 refs;
+    int                 type;
+    macdrv_window       window;
+    int                 status;
+    int                 done;
+} macdrv_query;
+
 static inline macdrv_event_mask event_mask_for_type(int type)
 {
     return ((macdrv_event_mask)1 << type);
 }
 
-extern macdrv_event_queue macdrv_create_event_queue(void) DECLSPEC_HIDDEN;
+typedef void (*macdrv_event_handler)(macdrv_event *event);
+
+extern macdrv_event_queue macdrv_create_event_queue(macdrv_event_handler handler) DECLSPEC_HIDDEN;
 extern void macdrv_destroy_event_queue(macdrv_event_queue queue) DECLSPEC_HIDDEN;
 extern int macdrv_get_event_queue_fd(macdrv_event_queue queue) DECLSPEC_HIDDEN;
 
@@ -215,6 +234,11 @@ extern int macdrv_get_event_from_queue(macdrv_event_queue queue,
         macdrv_event_mask mask, macdrv_event *event) DECLSPEC_HIDDEN;
 extern void macdrv_cleanup_event(macdrv_event *event) DECLSPEC_HIDDEN;
 
+extern macdrv_query* macdrv_create_query(void) DECLSPEC_HIDDEN;
+extern macdrv_query* macdrv_retain_query(macdrv_query *query) DECLSPEC_HIDDEN;
+extern void macdrv_release_query(macdrv_query *query) DECLSPEC_HIDDEN;
+extern void macdrv_set_query_done(macdrv_query *query) DECLSPEC_HIDDEN;
+
 
 /* window */
 struct macdrv_window_features {

dlls/winemac.drv/macdrv_main.c

@@ -157,7 +157,7 @@ struct macdrv_thread_data *macdrv_init_thread_data(void)
         ExitProcess(1);
     }
 
-    if (!(data->queue = macdrv_create_event_queue()))
+    if (!(data->queue = macdrv_create_event_queue(macdrv_handle_event)))
     {
         ERR("macdrv: Can't create event queue.\n");
         ExitProcess(1);