RFR: 8264663: Update test SuspendWithCurrentThread.java to verify that suspend doesn't exit until resumed
Leonid Mesnik
lmesnik at openjdk.java.net
Sat Apr 24 01:59:28 UTC 2021
On Fri, 23 Apr 2021 21:07:56 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:
> Test test/hotspot/jtreg/serviceability/jvmti/SuspendWithCurrentThread/SuspendWithCurrentThread.java
> doesn't check that thread stops in SuspendThreadList(...).
>
> Actually, before https://bugs.openjdk.java.net/browse/JDK-8257831 the thread didn't suspend itself but only get a request to be suspended. So it continued to execute and stopped a little bit later.
>
> Such behavior is a violation of spec which says " If the calling thread is specified in the request_list array, this function will not return until some other thread resumes it."
>
> While the bug is fixed it is still useful to verify correct behavior. If the fix is backported without JDK-8257831 test should start failing.
Dan, Serguei. Thank you for review. I've verified that test build and passed on linux/win/mac x64 and linux-aarch64.
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PR: https://git.openjdk.java.net/jdk/pull/3665
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