Is it possible to resurrect sa-jdi?

[Egor Ushakov]

Hi Alan,

this is not yet released in IDEA, so no usage for now.
However it looks much better than the usual thread dump, so if it could 
be used easily (and we're trying to achieve that) it could easily 
replace the thread dump action for processes in IDEA.

On 05-Sep-18 13:47, Alan Bateman wrote:
> On 05/09/2018 11:25, Egor Ushakov wrote:
>> Hi,
>>
>> suddenly at Jetbrains we realized that sa pid attach may be useful. 
>> Unfortunately sun.jvm.hotspot.jdi* was removed in jdk 9.
>> We would like to resurrect sa-jdi in our jdk fork. As I can see the 
>> agent is still there, so it should be feasible.
>> Do you see any issues with that? Should we go in that direction or is 
>> it a dead end?
>>
> There were discussions here in 2016 (and I think further back) about 
> SA-JDI and whether it was actually used. I don't recall anyone 
> responding or objecting at the time, probably because most developers 
> would never attach a java debugger to a core file or hung VM. Have you 
> seen significant usage from IntelliJ users? Are these users diagnosing 
> VM crashes or other JDK bugs?
>
> As regards creating your own JDI connectors and transport then it 
> should be feasible but it would rely on an undocumented and 
> non-exported API. You would need to compile and run with --add-exports 
> option to export the packages to whatever module contains the 
> connectors for example.
>
> -Alan
>

-- 
Egor Ushakov
Software Developer
JetBrains
http://www.jetbrains.com
The Drive to Develop