CODEWITHSUNDEEP
javasdkjvmout-of-memory
wFateem
wFateem

Reputation: 346

Generating a Java thread dump on an event/exception

I worked mainly with the IBM SDK so there is a specific JVM argument you can use in order to enable dumps (heap, thread, system core) on specific events or exceptions (java.lang.OutOfMemoryError, SIGTERM, etc...)

I want to be able to do the same thing using the Oracle JDK. I only see the argument: -XX:+HeapDumpOnOutOfMemoryError which will only generate a heap dump for the specific exception java.lang.OutOfMemoryError.

Basically I do not have access to the code, so I want to be able to have the JVM generate both a heap dump and a Java thread dump for analysis (java.lang.OutOfMemoryError is one of many other events).

Upvotes: 0

Views: 1845

Answers (1)

apangin
apangin

Reputation: 98610

JVM Tool Interface is a standard way to implement such tools.

JVMTI Agents can set up callbacks for a variety of events.

Here are some examples how to handle exceptions events and how to dump heap before VM exit.

Upvotes: 3

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