RFR(s): 8205583: Crash in ConcurrentHashTable do_bulk_delete_locked_for

Robbin Ehn robbin.ehn at oracle.com
Tue Jun 26 09:28:24 UTC 2018

Hi, here is the updated version.

Inc: http://cr.openjdk.java.net/~rehn/8205583/v1/inc/webrev/


On 06/25/2018 08:26 PM, Robbin Ehn wrote:
> Hi all, please review.
> Webrev: http://cr.openjdk.java.net/~rehn/8205583/v0/webrev/index.html
> Issue: https://bugs.openjdk.java.net/browse/JDK-8205583
> The problem is that the cancel-able cleaning operation is unaware of rehash.
> The cleaning starts, pauses for a safepoint which does the rehash, destroying
> the old table. When the cleaning continues after the safepoint it will continue
> to do so in the destroyed table.
> The cancelability of the cleaning operation is not needed and just creates
> complicity. In this change-set I remove that functionality, which means a rehash
> will be postponed until the cleaning have finished. (identical as for growing)
> Passed 700 runs of the test that produced the error and tier 1-3.
> Thanks, Robbin

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