[Phpfreechat-svn] SF.net SVN: phpfreechat: [1083] branches/pfc-comet/misc/flock-tests/ readwrite2.php

[<gpi...@us...>]

Revision: 1083
          http://phpfreechat.svn.sourceforge.net/phpfreechat/?rev=1083&view=rev
Author:   gpinzone
Date:     2007-08-04 10:33:26 -0700 (Sat, 04 Aug 2007)

Log Message:
-----------
Implemented (2^n - 1) * delay exponential back-off for flock failure.

Modified Paths:
--------------
    branches/pfc-comet/misc/flock-tests/readwrite2.php

Modified: branches/pfc-comet/misc/flock-tests/readwrite2.php
===================================================================
--- branches/pfc-comet/misc/flock-tests/readwrite2.php	2007-08-04 12:57:44 UTC (rev 1082)
+++ branches/pfc-comet/misc/flock-tests/readwrite2.php	2007-08-04 17:33:26 UTC (rev 1083)
@@ -31,7 +31,8 @@
           break;
         }
         // If flock is working properly, this will never be reached
-        usleep(rand(1000,5000));  // TODO: implement exponential backoff
+        $delay = (pow (2, ($i+1)) - 1) * rand(0,5000);  // Exponential backoff
+        usleep($delay);  
       }
       fclose($fh);
     }


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