Integrated: 8288327: Executable.hasRealParameterData should not be volatile

[Сергей Цыпанов]

On Mon, 13 Jun 2022 18:42:24 GMT, Сергей Цыпанов <duke at openjdk.org> wrote:

> If there are two threads calling `Executable.hasRealParameterData()` under race and the first one writes into volatile `Executable.parameters` field (doing _releasing store_) and the second thread reads non-null value from the same field (doing acquiring read) then it must read exactly the same value written into `hasRealParameterData` within `privateGetParameters()`. The reason for this is that we assign `hasRealParameterData` before  _releasing store_.
> 
> In the opposite case (_acquiring read_ reads null) the second thread writes the value itself and returns it from the method so there is no change in behavior.

This pull request has now been integrated.

Changeset: aa557b9b
Author:    Sergey Tsypanov <sergei.tsypanov at yandex.ru>
Committer: Peter Levart <plevart at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/aa557b9b01571d7614f54d341c5cd8bf36cdacee
Stats:     48 lines in 1 file changed: 13 ins; 19 del; 16 mod

8288327: Executable.hasRealParameterData should not be volatile

Reviewed-by: plevart

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PR: https://git.openjdk.org/jdk/pull/9143