Update bench.out and bench.out.old only upon completion

Write output from the currently running benchmark into a temporary
file and move files around only once the current run is complete.
That way we don't lose data from the last two runs due to an
incomplete run.

1 files changed, 2 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index bb6fc28ac8..78a0fa36d0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2013-04-03  Siddhesh Poyarekar  <siddhesh@redhat.com>
 
+	* Rules (bench): Move bench.out after the run is complete.
+
 	* Rules (bench): Echo currently running benchmark.
 
 	* benchtests/Makefile (bench): Add atan and slowatan.