Integrated: 8333236: Test java/foreign/TestAccessModes.java is timing out after passing
Maurizio Cimadamore
mcimadamore at openjdk.org
Fri May 31 17:56:07 UTC 2024
On Thu, 30 May 2024 16:15:22 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:
> This PR restores a var handle cache in `Utils::makeSegmentViewVarHandle`. The cache was moved to `ValueLayouts::varHandle` as part of [pull/19251](https://git.openjdk.org/jdk/pull/19251), on the basis that we want to optimize the common case like:
>
>
> ValueLayout layout = ...
> layout.varHandle().get(...)
>
>
> And that caching more complex var handles didn't seem to add value, given that, for these var handles, the logic in `LayoutPath` needs to adapt the returned var handle anyways.
>
> But, `TestAccessModes` revealed a different picture - w/o any cache in `Utils` the test end up allocating 8963 var handle instances (instead of just 4), in each of the 4 runs the test includes. While this is admittedly a stress test, it seems nice to restore the level of sharing we had before [pull/19251](https://git.openjdk.org/jdk/pull/19251).
This pull request has now been integrated.
Changeset: e99f6a65
Author: Maurizio Cimadamore <mcimadamore at openjdk.org>
URL: https://git.openjdk.org/jdk/commit/e99f6a65a8307e6b31a08a677914dfd20d46687f
Stats: 27 lines in 2 files changed: 24 ins; 0 del; 3 mod
8333236: Test java/foreign/TestAccessModes.java is timing out after passing
Reviewed-by: jvernee
-------------
PR: https://git.openjdk.org/jdk/pull/19485
More information about the core-libs-dev
mailing list