[PATCH 0/3] MR9154: win32u: Check QS_DRIVER bit before calling ProcessEvents.

[Rémi Bernon (＠rbernon)]

Split from https://gitlab.winehq.org/wine/wine/-/merge_requests/9128, adding an XFlush call to make sure requests are being actually written out before we stop calling ProcessEvents for a while.

[PATCH 1/3] winex11: Flush the thread display after processing every event.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/winex11.drv/event.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/winex11.drv/event.c b/dlls/winex11.drv/event.c
index ca261b7bf3b..35a51c00700 100644
--- a/dlls/winex11.drv/event.c
+++ b/dlls/winex11.drv/event.c
@@ -544,7 +544,10 @@ BOOL X11DRV_ProcessEvents( DWORD mask )
     free_event_data( &prev_event );
     XFlush( gdi_display );
     if (count) TRACE( "processed %d events\n", count );
-    return !check_fd_events( ConnectionNumber( data->display ), POLLIN );
+
+    if (check_fd_events( ConnectionNumber( data->display ), POLLIN )) return FALSE;
+    XFlush( data->display ); /* all events have been processed, flush any pending request */
+    return TRUE;
 }

[PATCH 2/3] winex11: Remove some arguably unnecessary XFlush calls.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/winex11.drv/event.c  | 1 -
 dlls/winex11.drv/window.c | 5 -----
 2 files changed, 6 deletions(-)

diff --git a/dlls/winex11.drv/event.c b/dlls/winex11.drv/event.c
index 35a51c00700..9deccc2acfc 100644
--- a/dlls/winex11.drv/event.c
+++ b/dlls/winex11.drv/event.c
@@ -258,7 +258,6 @@ static void xembed_request_focus( Display *display, Window window, DWORD timesta
     xev.xclient.data.l[4] = 0;

XSendEvent(display, window, False, NoEventMask, &xev);
-    XFlush( display );
 }

/***********************************************************************
diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 2e6f13eec53..1e006324a54 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -1333,8 +1333,6 @@ static void window_set_net_wm_state( struct x11drv_win_data *data, UINT new_stat
                         SubstructureRedirectMask | SubstructureNotifyMask, &xev );
         }
     }
-
-    XFlush( data->display );
 }

static void window_set_config( struct x11drv_win_data *data, RECT rect, BOOL above )
@@ -1582,8 +1580,6 @@ static void window_set_wm_state( struct x11drv_win_data *data, UINT new_state, B

/* override redirect windows won't receive WM_STATE property changes */
     if (!data->managed) data->wm_state_serial = 0;
-
-    XFlush( data->display );
 }

static void window_set_managed( struct x11drv_win_data *data, BOOL new_managed )
@@ -1972,7 +1968,6 @@ void set_net_active_window( HWND hwnd, HWND previous )
     TRACE( "requesting _NET_ACTIVE_WINDOW %p/%lx serial %lu\n", hwnd, window, data->net_active_window_serial );
     XSendEvent( data->display, DefaultRootWindow( data->display ), False,
                 SubstructureRedirectMask | SubstructureNotifyMask, &xev );
-    XFlush( data->display );
 }

BOOL window_is_reparenting( HWND hwnd )

[PATCH 3/3] win32u: Check QS_DRIVER bit before calling ProcessEvents.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/win32u/message.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/dlls/win32u/message.c b/dlls/win32u/message.c
index d61263f26e6..9e8f9d54af8 100644
--- a/dlls/win32u/message.c
+++ b/dlls/win32u/message.c
@@ -3179,7 +3179,7 @@ static HANDLE get_server_queue_handle(void)
     return ret;
 }

-static BOOL has_hardware_messages(void)
+static BOOL check_internal_bits( UINT mask )
 {
     struct object_lock lock = OBJECT_LOCK_INIT;
     const queue_shm_t *queue_shm;
@@ -3187,7 +3187,7 @@ static BOOL has_hardware_messages(void)
     UINT status;

while ((status = get_shared_queue( &lock, &queue_shm )) == STATUS_PENDING)
-        signaled = queue_shm->internal_bits & QS_HARDWARE;
+        signaled = queue_shm->internal_bits & mask;
     if (status) return FALSE;

return signaled;
@@ -3195,7 +3195,7 @@ static BOOL has_hardware_messages(void)

BOOL process_driver_events( UINT mask )
 {
-    if (user_driver->pProcessEvents( mask ))
+    if (check_internal_bits( QS_DRIVER ) && user_driver->pProcessEvents( mask ))
     {
         SERVER_START_REQ( set_queue_mask )
         {
@@ -3205,7 +3205,7 @@ BOOL process_driver_events( UINT mask )
         SERVER_END_REQ;
     }

-    return has_hardware_messages();
+    return check_internal_bits( QS_HARDWARE );
 }

void check_for_events( UINT flags )