[dtrace-discuss] I do not understand. Please advise.

[Paul van den Bogaard]

I have the following script:

proc:::exec-success
/execname == "java"/
{
    stop();
    printf("Restart with prun %d\n", pid);
}

This one stops any java process that I start (and others :-). Runs as expected. I "prun pid" and that stopped java process continues.

Now I add a single line directly after the printf:

    system("./scanit.d -p %d", pid);

scanit.d uses the hotspot probes to dive into this java process just started.  If scanit.d is started from the command line it works as I expect it. However when started through the above mentioned "system(...)" way, an error is raised and the stopped java process is started again!

The message is:

dtrace: failed to compile script ./scanit.d: line 17: args[ ] may not be referenced because probe description hotspot4051:::method-entry matches an unstable set of probes

What am I missing? (and yes I did start the java process with -XX:+ExtendedDTraceProbes)

Thanks
Paul
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