> Now the `JvmtiVTMSTransitionDisabler` mechanism supports disabling VTMS
> transitions for all virtual threads only. It should also support disabling
> transitions for any specific virtual thread as well. This will improve
> scalability of the JVMTI functions operating on target virtual threads
On Tue, 20 Dec 2022 10:57:44 GMT, Jesper Wilhelmsson
wrote:
> Forwardport JDK 20 -> JDK 21
This pull request has now been integrated.
Changeset: c5a4a7a6
Author:Jesper Wilhelmsson
URL:
https://git.openjdk.org/jdk/commit/c5a4a7a679ec76cb08a999a198e5c73e9cd9d2f0
Stats: 2286 lines
> Forwardport JDK 20 -> JDK 21
Jesper Wilhelmsson has updated the pull request with a new target base due to a
merge or a rebase. The pull request now contains 107 commits:
- Merge remote-tracking branch 'jdk20/master' into Merge_jdk20
- 8298865: Excessive memory allocation in CipherOutputStre
Forwardport JDK 20 -> JDK 21
-
Commit messages:
- Merge remote-tracking branch 'jdk20/master' into Merge_jdk20
- 8298784: JFR: Test chunk integrity
- 8298215: gc/g1/TestVerifyGCType.java failed with "Missing expected
verification pattern Verifying After GC for: Pause Young (Prepar
On Tue, 20 Dec 2022 04:49:46 GMT, David Holmes wrote:
>> This update just follows the common pattern which was introduced about two
>> years ago. At the moment I do not remember the exact reason. This code needs
>> to wait for the counter to become zero and to use `ThreadBlockInVM` which
>> ca
On Tue, 20 Dec 2022 04:37:32 GMT, David Holmes wrote:
>> The JvmtiVTMSTransitionDisabler has to be a no-op for a non-virtual thread.
>> It is to avoid different branches where it is possible for virtual and
>> non-virtual cases and use this in `jvmtiEnv.cpp`:
>> ` JvmtiVTMSTransitionDisabler d
On Tue, 20 Dec 2022 04:50:49 GMT, David Holmes wrote:
>> Serguei Spitsyn has updated the pull request incrementally with one
>> additional commit since the last revision:
>>
>> review comments are addressed
>
> src/hotspot/share/prims/jvmtiThreadState.hpp line 88:
>
>> 86:
>> 87: bool _is
On Tue, 20 Dec 2022 04:51:52 GMT, David Holmes wrote:
>> Each of these two functions is called just once with the lock held.
>> I feel that asserting this would be an overkill but I can add it if you
>> still think it is important.
>> I've added assert for negative count.
>
> asserts would be go
