jmx-dev Review: JDK-7158614, JMXStartStopTest.sh failing intermittently

[shanliang]

Webrev:
    http://cr.openjdk.java.net/~sjiang/JDK-7158614/webrev.00/

shanliang wrote:
> Hi,
>
> The test failed because 2 problems happened on a slow machine:
>
> 1) the function _get_pid() did not get right pid because the pid was 
> showed too late
> or
> 2) the file JMXStartStop.lck was showed too late too
>
> The fix is to add a waiting (max 20 seconds) in the function 
> _app_start() to make sure that the pid and JMXStartStop.lck are both 
> well created. This waiting is not entered in a normal and not too 
> charged machine.
>
> I modified too the class JMXStartStopDoSomething, it will wake up 
> every 500ms to check running timeout, instead of 1ms, 1ms is not 
> reasonable short.
>
> I tested 1) by not running JMXStartStopDoSomething in the function 
> _app_start()
> I tested 2) by add one second sleep before creating JMXStartStop.lck 
> file in the class JMXStartStopDoSomething.
>
> best regards,
>
> Shanliang