Integrated: 8268857: Merge VM_PrintJNI and VM_PrintThreads and remove the unused field 'is_deadlock' of DeadlockCycle

[Denghui Dong]

On Wed, 16 Jun 2021 03:33:14 GMT, Denghui Dong <ddong at openjdk.org> wrote:

> Hi,
> 
> Could I have a review of this change that merges three vm operations(VM_PrintThreads, VM_PrintJNI, VM_FindDeadlocks) in thread_dump and signal_thread_entry.
> 
> `jstack` is a very common command, even in the production environment.
> 
> In addition to reduce the cost of entering safepoint, I think this patch also could ensure the consistency of the results of VM_PrintThreads and VM_FindDeadlocks.

This pull request has now been integrated.

Changeset: 1f0ea7c3
Author:    Denghui Dong <ddong at openjdk.org>
Committer: Yi Yang <yyang at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/1f0ea7c3d62221405de982ba484c0ee985fa9d7b
Stats:     51 lines in 8 files changed: 5 ins; 33 del; 13 mod

8268857: Merge VM_PrintJNI and VM_PrintThreads and remove the unused field 'is_deadlock' of DeadlockCycle

Reviewed-by: dholmes

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PR: https://git.openjdk.java.net/jdk/pull/4504