RFR for JDK-7027502: Test failures in demo/jvmti/hprof testcases, need to be othervm
Tristan Yan
tristan.yan at oracle.com
Tue Jan 7 08:16:00 UTC 2014
Thank you, David
I fixed copyright and change back sleep.
println was intended to be left in. This test was failed with timeout,
printf could help us to detect the value of total_turns_taken and
expected_turns_taken.
Please review it again
http://cr.openjdk.java.net/~tyan/JDK-7027502/webrev.01/
Regards
Tristan
On 01/07/2014 03:10 PM, David Holmes wrote:
> Hi Tristan,
>
> On 7/01/2014 4:43 PM, Tristan Yan wrote:
>> Hi All
>> Please help to review the code change for JDK-7027502.
>>
>> http://cr.openjdk.java.net/~tyan/JDK-7027502/
>>
>> Description:
>> This test was failed in JPRT test but recently we test with same
>> binaries run, it doesn't fail any more. The intention for this code
>> change is bringing this test back to normal test and make this test
>> robust and more informative. Change includes
>> 1. Remove this test from ProblemList.
>> 2. Change static member total_turns_taken into a local variable.
>>
>> Please let me know your comment on this.
>
> 2 * Copyright (c) 2004,2014 Oracle and/or its affiliates. All
> rights reserved.
>
> Correct copyright format should have a space before 2014 and a comma
> after:
>
> * Copyright (c) 2004, 2014, Oracle and/or its affiliates. All rights
> reserved.
>
> ---
>
> Was this println intended to be left in?
>
> 114 System.out.println("total_turns_taken =" +
> total_turns_taken +
> 115 ";expected_turns_taken =" +
> expected_turns_taken);
> 116 if ( total_turns_taken.get() ==
> expected_turns_taken ) {
>
>
> You only want to read total_turns_taken once otherwise you may see
> misleading print outs.
>
> ---
>
> 119 /* Create some monitor contention by sleeping with
> lock */
> 120 if ( default_contention_sleep > 0 ) {
> 121 System.out.println("Context sleeping, to
> create contention");
> 122 try {
> 123 turn.wait((long) default_contention_sleep);
> 124 } catch (InterruptedException ignore) { }
> 125 }
>
> By changing the Thread.sleep to turn.wait you no longer introduce any
> contention as the wait() will release the monitor.
>
> David
>
>> Thank you.
>> Tristan
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