CODEWITHSUNDEEP
javaclassloaderbytecodeinstrumentation
Sanyam Goel
Sanyam Goel

Reputation: 2180

How can this instrumentation be done

I have different Java applications running on my system and want to instrument classes from one of these applications

While trying to do this using dynamically loaded Java agent I found that we can attach it to a jvm instance which requires vm id of that jvm instance when I put a pid of an already running Java application by searching from windows task manager the agent jar does not attach to this process and a error is thrown.

While doing it using ManagementFactory.getRuntimeMXBean() the process id() returned is that of the instance loading the agent.jar. kindly suggest how to access a vmid of a different jvm instance

Upvotes: 3

Views: 123

Answers (1)

Narendra Pathai
Narendra Pathai

Reputation: 41945

You can use scripts for executing the JPS command and extract the information regarding the VM instances being run.

Also the jps command uses MonitoredHost API which has activeVms() method.

Upvotes: 1

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