RFR: 8320515: assert(monitor->object_peek() != nullptr) failed: Owned monitors should not have a dead object [v5]

[Stefan Karlsson]

On Mon, 27 Nov 2023 02:17:27 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Stefan Karlsson has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Split test and use othervm
>
> test/hotspot/jtreg/serviceability/jvmti/GetOwnedMonitorInfo/GetOwnedMonitorInfoTest.java line 78:
> 
>> 76:         final GetOwnedMonitorInfoTest lock = new GetOwnedMonitorInfoTest();
>> 77: 
>> 78:         Thread t1 = threadFactory.newThread(() -> {
> 
> Pre-existing nit: by default virtual threads have no name, so the output in the virtual thread case looks a little odd. Can you add:
> 
> Thread.currentThread().setName("Worker-Thread");
> 
> please.

Sure.

> test/hotspot/jtreg/serviceability/jvmti/GetOwnedMonitorInfo/libGetOwnedMonitorInfoTest.c line 270:
> 
>> 268: Java_GetOwnedMonitorInfoTest_jniMonitorEnter(JNIEnv* env, jclass cls, jobject obj) {
>> 269:     if ((*env)->MonitorEnter(env, obj) != 0) {
>> 270:         fprintf(stderr, "MonitorEnter failed");
> 
> Should this be a fatal error?

I added a call to exit.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16783#discussion_r1405909361
PR Review Comment: https://git.openjdk.org/jdk/pull/16783#discussion_r1405906191