Withdrawn: 7902831: Provide a way to isolate tests from general concurrency

[duke]

On Mon, 29 Nov 2021 14:49:52 GMT, Evgeny Nikitin <enikitin at openjdk.org> wrote:

> The PR expands the test isolation possibilities to the whole machine. Possibility to limit exclusiveness to the directory remains.
> There are two options now: "exclusiveAccess.dirs" (a directory list), and "exclusiveAccess.machine" (boolean).
> 
> The solution is based on the ReentrantReadWriteLock, Write lock is held by machine-exclusive executors while read lock is taken for directory-only and fully-concurrent tests. Directory-scoped isolation is achieved by an additional lock.
> 
> Testing: shell-based tests added, run locally.

This pull request has been closed without being integrated.

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PR: https://git.openjdk.org/jtreg/pull/43