From 12af94707fe4ab7e55f0e52ed262f6b45aeec5ed Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Mon, 10 Aug 2015 01:53:16 +0200
Subject: [PATCH] Fix cloggage of the pipe communicating with the forked X11
 splash window subprocess

---
 direct/src/plugin/p3dX11SplashWindow.cxx | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/direct/src/plugin/p3dX11SplashWindow.cxx b/direct/src/plugin/p3dX11SplashWindow.cxx
index f1afc5a15b..513458521e 100644
--- a/direct/src/plugin/p3dX11SplashWindow.cxx
+++ b/direct/src/plugin/p3dX11SplashWindow.cxx
@@ -681,10 +681,13 @@ subprocess_run() {
       }
     }
 
-    if (input_ready) {
+    do {
+      // Empty the pipe of whatever is in it.
       receive_command();
-    }
+      input_ready = _pipe_read.has_gdata();
+    } while (input_ready);
 
+    // Sleep a good amount in order not to lock up the system.
     struct timespec req;
     req.tv_sec = 0;
     req.tv_nsec = 50000000;  // 50 ms