RFR (S): 6516521: Doc: should document about the primordial thread attaching to the VM (original) (raw)

Thomas Stüfe thomas.stuefe at gmail.com
Thu Oct 11 08:09:40 UTC 2018

Hi David,

On Thu, Oct 11, 2018 at 11:45 AM David Holmes <david.holmes at oracle.com> wrote:

Although the JNI spec itself is not an open document I see no reason not to get feedback on this simple update. Bug: https://bugs.openjdk.java.net/browse/JDK-6516521 --- Chapter 5: The Invocation API Creating the VM The JNICreateJavaVM() function loads and initializes a Java VM and returns a pointer to the JNI interface pointer. The thread that called JNICreateJavaVM() is considered to be the main thread. --- Proposed additional text: Note: Depending on the operating system, the primordial process thread may be subject to special handling that impacts its ability to function properly as a normal Java thread (such as having a limited stack size and being able to throw StackOverflowError). It is strongly recommended that the primordial thread is not used to load the Java VM, but that a new thread is created just for that purpose.

I agree. Good wording. As mentioned before, on AIX we won't even come up on the primordial thread.

..Thomas

Thanks, David

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