[External] : Re: bug: breakpoints in in an anonymous class method executed on a virtual thread callstack are skipped

[Chris Plummer]

I'll need thorough step-by-step instructions for Vlad's test case, 
including installation of all needed components.

Can you at least verify if you are still seeing the following, and if so 
can you send me the output that includes the line number in threadControl.c?

 > JDWP exit error AGENT_ERROR_INVALID_THREAD(203): missing entry in
 > running thread table
 > [src/jdk.jdwp.agent/share/native/libjdwp/threadControl.c:1109]

thanks,

Chris

On 9/18/23 4:50 PM, Ben Berman wrote:
> Thanks for replying to this. I am not sophisticated enough to answer 
> these questions. Since this bug is real, the best thing would be if 
> someone who is more sophisticated tries the reproduction that is 
> simpler and shared by Vlad here: 
> https://youtrack.jetbrains.com/issue/IDEA-324002/IntelliJ-debugger-doesnt-break-nor-does-Eclipse-in-a-virtual-threads-project-inside-anonymous-class-methods-reproduction#focus=Comments-27-7821461.0-0 
> <https://urldefense.com/v3/__https://youtrack.jetbrains.com/issue/IDEA-324002/IntelliJ-debugger-doesnt-break-nor-does-Eclipse-in-a-virtual-threads-project-inside-anonymous-class-methods-reproduction*focus=Comments-27-7821461.0-0__;Iw!!ACWV5N9M2RV99hQ!JMtWDF29MAzj0ca7Bz1ZM1-F2-PbLDIsjzRCv0Fonmp9-ytTR5QAIKPtP1jK8etz8-IMCRjuMdAzMGXEP07X0OgkDqdYcA$> 
> . It reproduces in:
>
> openjdk version "21" 2023-09-19
> OpenJDK Runtime Environment (build 21+35-2513)
> OpenJDK 64-Bit Server VM (build 21+35-2513, mixed mode, sharing)
>
> on Windows.
>
> On Mon, Jul 10, 2023 at 6:52 PM Chris Plummer 
> <chris.plummer at oracle.com> wrote:
>
>     One other thing to add. When you see a "JDWP exit error" like you
>     mentioned, that should result in the debuggee exiting. I'm not
>     sure how
>     you are seeing the println() also being executed, unless the "JDWP
>     exit
>     error" is happening afterwards, such as when the debuggee exits on
>     its
>     own, and the debug agent is shutting down.
>
>     Chris
>
>     On 7/10/23 3:27 PM, Chris Plummer wrote:
>     > Hi Ben,
>     >
>     > The first time I read this I didn't notice the link you provided to
>     > the jetbrains issue you filed. I see about halfway down the page
>     you
>     > show the following exception:
>     >
>     > JDWP exit error AGENT_ERROR_INVALID_THREAD(203): missing entry in
>     > running thread table
>     > [src/jdk.jdwp.agent/share/native/libjdwp/threadControl.c:1109]
>     >
>     > As is pointed out later in this issue page, this looks like
>     > JDK-8305209 <https://bugs.openjdk.org/browse/JDK-8305209>, which
>     was
>     > fixed a few months ago. You were ask to try a recent version of JDK
>     > 21, and you replied back that it still reproduced, but the error
>     you
>     > show later indicates that it is still happening at line 1109. It
>     > should be line 1116 if you are using a fixed version. Just
>     wanted to
>     > double check that line 1116 is the line number you are seeing the
>     > error at when you use JDK 21.
>     >
>     > Also, when this error happens, it should cause the debuggee to exit
>     > with a core file and hs_err file. Are either of these present? The
>     > hs_err file would be very useful since it will contain a stack
>     trace
>     > at the point of the error.
>     >
>     > thanks,
>     >
>     > Chris
>     >
>     > On 6/29/23 2:23 PM, Ben Berman wrote:
>     >> Investigating an issue in both IntelliJ and Eclipse debuggers
>     led to
>     >> this bug: I can't break inside an anonymous class method of the
>     form
>     >>
>     >> ```
>     >> new Object() {
>     >>   void test() {
>     >>     System.out.println("breakpoint here does not work");
>     >>   }
>     >> }.test();
>     >> ```
>     >>
>     >> due to a buggy interaction between JDWP and virtual threads. The
>     >> console statement in the example above does indeed print, i.e.
>     it is
>     >> executed.
>     >>
>     >> What would the next steps be to help with investigating and
>     resolving
>     >> this issue?
>     >>
>     >>
>     https://youtrack.jetbrains.com/issue/IDEA-324002/IntelliJ-debugger-doesnt-break-nor-does-Eclipse-in-a-virtual-threads-project-inside-anonymous-class-methods-reproduction?clearDraft=true&description=%0A%0AIU-231.9161.38,%20JRE%2017.0.7%2B10-b829.16x64%20JetBrains%20s.r.o
>     <https://urldefense.com/v3/__https://youtrack.jetbrains.com/issue/IDEA-324002/IntelliJ-debugger-doesnt-break-nor-does-Eclipse-in-a-virtual-threads-project-inside-anonymous-class-methods-reproduction?clearDraft=true&description=*0A*0AIU-231.9161.38,*20JRE*2017.0.7*2B10-b829.16x64*20JetBrains*20s.r.o__;JSUlJSUlJQ!!ACWV5N9M2RV99hQ!JMtWDF29MAzj0ca7Bz1ZM1-F2-PbLDIsjzRCv0Fonmp9-ytTR5QAIKPtP1jK8etz8-IMCRjuMdAzMGXEP07X0Oh4JstG1A$>
>
>     >>
>     <https://youtrack.jetbrains.com/issue/IDEA-324002/IntelliJ-debugger-doesnt-break-nor-does-Eclipse-in-a-virtual-threads-project-inside-anonymous-class-methods-reproduction?clearDraft=true&description=%0A%0AIU-231.9161.38,%20JRE%2017.0.7%2B10-b829.16x64%20JetBrains%20s.r.o
>     <https://urldefense.com/v3/__https://youtrack.jetbrains.com/issue/IDEA-324002/IntelliJ-debugger-doesnt-break-nor-does-Eclipse-in-a-virtual-threads-project-inside-anonymous-class-methods-reproduction?clearDraft=true&description=*0A*0AIU-231.9161.38,*20JRE*2017.0.7*2B10-b829.16x64*20JetBrains*20s.r.o__;JSUlJSUlJQ!!ACWV5N9M2RV99hQ!JMtWDF29MAzj0ca7Bz1ZM1-F2-PbLDIsjzRCv0Fonmp9-ytTR5QAIKPtP1jK8etz8-IMCRjuMdAzMGXEP07X0Oh4JstG1A$>>.,%20OS%20Mac%20OS%20X(aarch64)%20v13.4,%20screens%203456.0x2234.0;%20Retina
>
>     >>
>
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