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8362501: Update test/hotspot/jtreg/applications/jcstress/README #26369

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13 changes: 9 additions & 4 deletions test/hotspot/jtreg/applications/jcstress/README
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@@ -1,4 +1,4 @@
Copyright (c) 2017, 2022, Oracle and/or its affiliates. All rights reserved.
Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

This code is free software; you can redistribute it and/or modify it
Expand All @@ -24,10 +24,15 @@ The tests located under this directory run tests from the Java Concurrency
Stress test suite[1] (a.k.a. jcstress). This suite aims to verify the
correctness of concurrency support in the JDK.

All the tests are run through the test driver class -- JcstressRunner, which
downloads the specified build of org.openjdk.jcstress:jcstress-tests-all,
All the tests are run through the test driver class -- JcstressRunner,
spawns a new JVM to run one jcstress test and checks that it finishes
successfully.
successfully. Before you start these tests, you should get the specified
build of org.openjdk.jcstress:jcstress-tests-all. The quickest way to
get the specified build is to download the prebuilt JAR from
[here](https://builds.shipilev.net/jcstress/).
You should specific the JAR location with jtreg option such as
-javaoption:-Djdk.test.lib.artifacts.jcstress-tests-all=
jcstress-tests-all-20241217-2035.jar when start jcstress tests in jtreg.

When the used version of org.openjdk.jcstress:jcstress-tests-all needs to be
changed, one should make corresponding changes to the artifact description in
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