RE: GC and Time Stamp

The JVMPI is a wholly different story from JPDA. I looked at using it
once and determined that it was simply way too much work. Not only would
I have to write the front-end (like jswat), I would also have to write
the native library that interfaces with the JVM, and devise the
communication protocol between the two. I don't have that kind of time.

n


On Fri, 2002-06-28 at 07:42, Wasler, David wrote:
> Hi All:
> 
> I'm still on my quest to add a time stamp to GC
> I came across this went reviewing jvmpi doc.
> Can I use jswat to catch NotifyEvent from the JVM?
> 
> http://java.sun.com/j2se/1.3/docs/guide/jvmpi/jvmpi.html#event_notification
> 
> 
> The VM sends an event by calling NotifyEvent with a JVMPI_Event data
> structure as the argument. The following events are supported: 
> method enter and exit 
> object alloc, move, and free 
> heap arena create and delete 
> GC start and finish 
> JNI global reference alloc and free 
> JNI weak global reference alloc and free 
> compiled method load and unload 
> thread start and end 
> class file data ready for instrumentation 
> class load and unload 
> contended Java monitor wait to enter , entered, and exit 
> contended raw monitor wait to enter, entered, and exit 
> Java monitor wait and waited 
> monitor dump 
> heap dump 
> object dump 
> request to dump or reset profiling data 
> Java virtual machine initialization and shutdown