From 46057d71220ea6072d9bce1d3504aca2fe3a86a4 Mon Sep 17 00:00:00 2001
From: Joe Wilm <joe@jwilm.com>
Date: Tue, 9 May 2017 21:30:31 -0700
Subject: [PATCH] Remove unnecessary locking

For X11 interrupt, we can just use the root window which doesn't require
taking a lock to find.
---
 src/platform/linux/x11/mod.rs | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/src/platform/linux/x11/mod.rs b/src/platform/linux/x11/mod.rs
index 2c8ac3f3..9f9f06f3 100644
--- a/src/platform/linux/x11/mod.rs
+++ b/src/platform/linux/x11/mod.rs
@@ -105,22 +105,9 @@ impl EventsLoop {
         self.interrupted.store(true, ::std::sync::atomic::Ordering::Relaxed);
 
         // Push an event on the X event queue so that methods like run_forever will advance.
-
-        // Get a window for the event.
-        //
-        // It should not matter which window is used since the purpose is merely
-        // to advance the event loop.
-        let window = {
-            let windows = self.windows.lock().unwrap();
-            match windows.keys().nth(0) {
-                Some(window_id) => window_id.0,
-                None => return
-            }
-        };
-
         let mut xev = ffi::XClientMessageEvent {
             type_: ffi::ClientMessage,
-            window: window,
+            window: self.root,
             format: 32,
             message_type: 0,
             serial: 0,
@@ -130,7 +117,7 @@ impl EventsLoop {
         };
 
         unsafe {
-            (self.display.xlib.XSendEvent)(self.display.display, window, 0, 0, mem::transmute(&mut xev));
+            (self.display.xlib.XSendEvent)(self.display.display, self.root, 0, 0, mem::transmute(&mut xev));
             (self.display.xlib.XFlush)(self.display.display);
             self.display.check_errors().expect("Failed to call XSendEvent after wakeup");
         }