Integrated: 8252921: NMT overwrite memory type for region assert when building dynamic archive

Zhengyu Gu zgu at openjdk.java.net
Tue Sep 22 12:00:45 UTC 2020


On Tue, 15 Sep 2020 14:37:44 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> Thread stack is currently unregistered with NMT in Thread's destructor. Apparently, only Java thread invokes destructor
> before thread exits.  For NonJavaThread, e.g. ConcurrentGCThread, thread may exit while its "Thread" object continues
> alive, therefore, its thread stack is still "alive" from NMT perspective. Once thread exits, the virtual memory for the
> thread stack can be reserved again, that confused NMT.  The solution is to move thread stack unregistration code to
> post_run() method.

This pull request has now been integrated.

Changeset: 8c02bdbf
Author:    Zhengyu Gu <zgu at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/8c02bdbf
Stats:     25 lines in 3 files changed: 13 ins; 11 del; 1 mod

8252921: NMT overwrite memory type for region assert when building dynamic archive

Reviewed-by: minqi, iklam, dholmes

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PR: https://git.openjdk.java.net/jdk/pull/185


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