Revert "windows: Don't flood windows message queue with gpui messages" (#41803)

Lukas Wirth created 19 hours ago

Reverts zed-industries/zed#41595

Closes #41704

Change summary

crates/gpui/src/platform/windows/dispatcher.rs | 26 +++++--------------
1 file changed, 7 insertions(+), 19 deletions(-)

Detailed changes

crates/gpui/src/platform/windows/dispatcher.rs

@@ -80,27 +80,15 @@ impl PlatformDispatcher for WindowsDispatcher {
     }
 
     fn dispatch_on_main_thread(&self, runnable: Runnable) {
-        let was_empty = self.main_sender.is_empty();
         match self.main_sender.send(runnable) {
             Ok(_) => unsafe {
-                // Only send a `WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD` to the
-                // queue if we have no runnables queued up yet, otherwise we
-                // risk filling the message queue with gpui messages causing us
-                // to starve the message loop of system messages, resulting in a
-                // process hang.
-                //
-                // When the message loop receives a
-                // `WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD` message we drain the
-                // runnable queue entirely.
-                if was_empty {
-                    PostMessageW(
-                        Some(self.platform_window_handle.as_raw()),
-                        WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD,
-                        WPARAM(self.validation_number),
-                        LPARAM(0),
-                    )
-                    .log_err();
-                }
+                PostMessageW(
+                    Some(self.platform_window_handle.as_raw()),
+                    WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD,
+                    WPARAM(self.validation_number),
+                    LPARAM(0),
+                )
+                .log_err();
             },
             Err(runnable) => {
                 // NOTE: Runnable may wrap a Future that is !Send.