From c550e0e27199911820f77bc0b1ed9398b6d1a515 Mon Sep 17 00:00:00 2001
From: stolz <unknown>
Date: Tue, 21 Oct 2003 11:51:15 +0000
Subject: [PATCH] [project @ 2003-10-21 11:51:15 by stolz] Save one fcntl-call
 in setNonBlockingFd when Fd is already non-blocking.

Please merge.
---
 ghc/rts/RtsUtils.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/ghc/rts/RtsUtils.c b/ghc/rts/RtsUtils.c
index 9637db0..6ff4f72 100644
--- a/ghc/rts/RtsUtils.c
+++ b/ghc/rts/RtsUtils.c
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: RtsUtils.c,v 1.35 2003/08/22 22:24:16 sof Exp $
+ * $Id: RtsUtils.c,v 1.36 2003/10/21 11:51:15 stolz Exp $
  *
  * (c) The GHC Team, 1998-2002
  *
@@ -249,7 +249,9 @@ setNonBlockingFd(int fd)
 
   /* clear the non-blocking flag on this file descriptor */
   fd_flags = fcntl(fd, F_GETFL);
-  fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
+  if (!(fd_flags & O_NONBLOCK)) {
+    fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
+  }
 }
 #else
 /* Stub defns -- async / non-blocking IO is not done 
-- 
1.7.10.4