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8264032: Improve thread safety of Runtime.version()

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Reviewed-by: shade, alanb
This commit is contained in:
Andrey Turbanov 2021-03-23 13:21:44 +00:00 • committed by Aleksey Shipilev
parent 8c1ab38ee2
commit 233536263e
1 changed files with 6 additions and 4 deletions
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10
src/java.base/share/classes/java/lang/Runtime.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1995, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1995, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019, Azul Systems, Inc. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@ -816,12 +816,14 @@ public class Runtime {
* @since 9
*/
public static Version version() {
if (version == null) {
version = new Version(VersionProps.versionNumbers(),
var v = version;
if (v == null) {
v = new Version(VersionProps.versionNumbers(),
VersionProps.pre(), VersionProps.build(),
VersionProps.optional());
version = v;
}
return version;
return v;
}
/**