8375001: NativeThreadSet get wrong currentNativeThread when using virtual thread

[jia-wei-tang]

Hi, I create an issue in the bug system: https://bugs.openjdk.org/browse/JDK-8375001

NativeThread.currentNativeThread(); should be replaced by NativeThread.current();. Otherwise, when using virtual thread, the program will run into a wrong state.

Now, I just changed the function used in NativeTheadSet.java, but I did not delete the currentNativeThread in src/java.base/unix/classes/sun/nio/ch/NativeThread.java and src/java.base/windows/classes/sun/nio/ch/NativeThread.java . I am wondering if I should delete these functions since they are useless now. I hope to get some advice. Thank you!

Besides, the jtreg testcases which can produce this issue is from JDK-8310902 (with option: -testThreadFactory:Virtual -testThreadFactoryPath:./jtregTestThreadFactory.jar). Do I need to bring the testcase test/jdk/java/nio/channels/FileChannel/CloseDuringTransfer.java here?

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Issue

• JDK-8375001: NativeThreadSet get wrong currentNativeThread when using virtual thread (Bug - P4)

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[jerboaa]

This should probably fixed with a backport of https://bugs.openjdk.org/browse/JDK-8321594 instead.