RFR: 8252921: NMT overwrite memory type for region assert when building dynamic archive [v6]
Zhengyu Gu
zgu at openjdk.java.net
Mon Sep 21 14:19:44 UTC 2020
> 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.
Zhengyu Gu has updated the pull request incrementally with two additional commits since the last revision:
- Fix indents
- Back out thread stack cleaning, to be addressed by JDK-8253429
-------------
Changes:
- all: https://git.openjdk.java.net/jdk/pull/185/files
- new: https://git.openjdk.java.net/jdk/pull/185/files/6b927b54..7aaa383e
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk&pr=185&range=05
- incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=185&range=04-05
Stats: 8 lines in 2 files changed: 0 ins; 7 del; 1 mod
Patch: https://git.openjdk.java.net/jdk/pull/185.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/185/head:pull/185
PR: https://git.openjdk.java.net/jdk/pull/185
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