From b6267d4a8c622f4888f25f164d4af0ec857b1bce Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 24 Apr 2019 13:42:26 +0530
Subject: [PATCH] X11 backend: Get rid of server roundtrip just to wake up the
 event loop

---
 glfw/x11_window.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/glfw/x11_window.c b/glfw/x11_window.c
index bcde9842f..615d5145f 100644
--- a/glfw/x11_window.c
+++ b/glfw/x11_window.c
@@ -1162,12 +1162,6 @@ static void processEvent(XEvent *event)
         return;
     }
 
-    if (event->type == ClientMessage && event->xclient.message_type == _glfw.x11.NULL_ && event->xproperty.window == _glfw.x11.helperWindowHandle)
-    {
-        // empty event generated by _glfwPlatformPostEmptyEvent
-        return;
-    }
-
     if (XFindContext(_glfw.x11.display,
                      event->xany.window,
                      _glfw.x11.context,
@@ -2562,16 +2556,6 @@ void _glfwPlatformWaitEventsTimeout(double timeout)
 
 void _glfwPlatformPostEmptyEvent(void)
 {
-    XEvent event;
-
-    memset(&event, 0, sizeof(event));
-    event.type = ClientMessage;
-    event.xclient.window = _glfw.x11.helperWindowHandle;
-    event.xclient.format = 32; // Data is 32-bit longs
-    event.xclient.message_type = _glfw.x11.NULL_;
-
-    XSendEvent(_glfw.x11.display, _glfw.x11.helperWindowHandle, False, 0, &event);
-    XFlush(_glfw.x11.display);
     while (write(_glfw.x11.eventLoopData.wakeupFds[1], "w", 1) < 0 && errno == EINTR);
 }