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8236661: launcher test PatchSystemModules.java start failing frequently after JDK-8234049

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Reviewed-by: alanb, mchung
This commit is contained in:
Brian Burkhalter 2020-01-14 11:06:03 -08:00
parent 03cd98e15b
commit 79ec4004d7
1 changed files with 7 additions and 3 deletions
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10
src/java.base/share/classes/sun/nio/ch/FileChannelImpl.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2020, 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
@ -49,6 +49,7 @@ import jdk.internal.access.JavaNioAccess;
import jdk.internal.access.SharedSecrets;
import jdk.internal.misc.ExtendedMapMode;
import jdk.internal.misc.Unsafe;
import jdk.internal.misc.VM;
import jdk.internal.ref.Cleaner;
import jdk.internal.ref.CleanerFactory;
@ -1116,8 +1117,11 @@ public class FileChannelImpl
}
private boolean isSync(MapMode mode) {
return mode == ExtendedMapMode.READ_ONLY_SYNC ||
mode == ExtendedMapMode.READ_WRITE_SYNC;
// Do not want to initialize ExtendedMapMode until
// after the module system has been initialized
return !VM.isModuleSystemInited() ? false :
(mode == ExtendedMapMode.READ_ONLY_SYNC ||
mode == ExtendedMapMode.READ_WRITE_SYNC);
}
private int toProt(MapMode mode) {