[newlib-cygwin] Fix condition in select which results in busy loop.

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=83834110a0279c228c5c7e232a5d7ce01dd04d3e

commit 83834110a0279c228c5c7e232a5d7ce01dd04d3e
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Mon Jun 6 16:18:53 2016 +0200

    Fix condition in select which results in busy loop.
    
    The check for current timestamp > start timestamp has an unwelcome
    side effect:  The loop is not left as long as the current timestamp
    hasn't been incremented.  This leads to busy loops of about one tick
    (10 to 16 ms per MSDN).
    
    This fixes https://cygwin.com/ml/cygwin/2016-05/msg00327.html
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/select.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc
index c63eaef..69391d8 100644
--- a/winsup/cygwin/select.cc
+++ b/winsup/cygwin/select.cc
@@ -211,7 +211,7 @@ select (int maxfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
 	{
 	  select_printf ("recalculating us");
 	  LONGLONG now = gtod.usecs ();
-	  if (now > (start_time + us))
+	  if (now >= (start_time + us))
 	    {
 	      select_printf ("timed out after verification");
 	      /* Set descriptor bits to zero per POSIX. */