RFR [7181748] TEST_BUG: java/lang/ThreadGroup/Suspend test fails intermittently (original) (raw)

Chris Hegarty chris.hegarty at oracle.com
Mon Jun 10 15:54:39 UTC 2013

I'm not sure I ever saw this test fail, but it does look like it has issues.

I would much prefer to see a j.u.c.Latch/Phaser used to synchronize across these threads.

-Chris.

On 10/06/2013 13:51, Ivan Gerasimov wrote:

Hello everyone!

The test of ThreadGroup.Suspend() was reported to fail on rare occasions. It can happen on a busy machine that 1 second delay would not be enough for the second thread to start. Then the first thread would suspend only itself and the test would fail. Earlier, another test was updated for similar reasons [1], [2]. The proposed test can still report false positive results if the second thread has had no chance to execute during one second after it had started. To avoid them there must be a way do distinguish suspended threads. WEBREV: http://cr.openjdk.java.net/~igerasim/7181748/webrev.0/ BUG: http://bugs.sun.com/viewbug.do?bugid=7181748

[1] http://bugs.sun.com/viewbug.do?bugid=7084033 [2] http://hg.openjdk.java.net/jdk8/jdk8/jdk/rev/184578f3e8b9 Sincerely yours, Ivan Gerasimov <https://jbs.oracle.com/bugs/browse/JDK-7084033>

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