Hey Jim,
I don't have any ideas off the top of my head, but you can certainly use DTrace
to figure out what's giving java the order to continue...
Adam
On Aug 13, 2010, at 6:45 AM, Jim Fiori wrote:
> Hi,
>
> I'm using the rexit/stop()/prun() dance to capture process exit in order to
> grab various procfs commands on exit. Works fine for simple program like
> "sleep". But for Java (and other threaded customer apps) it runs one or 2 of
> the p-commands, but the process goes away before I can get all I want:
>
> $ cat exit.d
> #!/usr/sbin/dtrace -qws
>
> syscall::rexit:entry
> /execname == "sleep" || execname == "java"/
> {
> stop();
> system("pargs %d",pid);
> system ("pldd %d",pid);
> system ("pfiles %d",pid);
> system ("pstack %d",pid);
>
> system ("prun %d",pid);
> }
>
> $ ./exit.d&
> [1] 22487
>
> OK, now test a "sleep" exit:
>
> bash-3.00$ sleep 5
> 22488: sleep 5
> argv[0]: sleep
> argv[1]: 5
> 22488: sleep 5
> /lib/libc.so.1
> /usr/lib/locale/en_US.ISO8859-1/en_US.ISO8859-1.so.3
> 22488: sleep 5
> Current rlimit: 256 file descriptors
> 0: S_IFCHR mode:0620 dev:287,0 ino:12582952 uid:5667 gid:7 rdev:24,18
> O_RDWR
> /devices/pseudo/p...@0:18
> 1: S_IFCHR mode:0620 dev:287,0 ino:12582952 uid:5667 gid:7 rdev:24,18
> O_RDWR
> /devices/pseudo/p...@0:18
> 2: S_IFCHR mode:0620 dev:287,0 ino:12582952 uid:5667 gid:7 rdev:24,18
> O_RDWR
> /devices/pseudo/p...@0:18
> 22488: sleep 5
> feea4d18 ecvt (2, 8047290, 8047296, 0, 8047298, 8047306)
>
> Looks like all the p-commands completed. But for java:
>
> 0$ /usr/java/bin/java -version
> java version "1.5.0_20"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_20-b02)
> Java HotSpot(TM) Client VM (build 1.5.0_20-b02, mixed mode, sharing)
> 22513: /usr/java/bin/java -version
> argv[0]: /usr/java/bin/java
> argv[1]: -version
> 22513: /usr/java/bin/java -version
> /lib/libthread.so.1
> /lib/libdl.so.1
> /lib/libc.so.1
> /usr/jdk/instances/jdk1.5.0/jre/lib/i386/client/libjvm.so
> /lib/libsocket.so.1
> /usr/lib/libsched.so.1
> /usr/lib/libCrun.so.1
> /lib/libm.so.1
> /lib/libnsl.so.1
> /lib/libm.so.2
> /lib/libscf.so.1
> /lib/libdoor.so.1
> /lib/libuutil.so.1
> /lib/libgen.so.1
> /lib/libmd.so.1
> /lib/libmp.so.2
> /usr/jdk/instances/jdk1.5.0/jre/lib/i386/native_threads/libhpi.so
> /usr/jdk/instances/jdk1.5.0/jre/lib/i386/libverify.so
> /usr/jdk/instances/jdk1.5.0/jre/lib/i386/libjava.so
> /usr/jdk/instances/jdk1.5.0/jre/lib/i386/libzip.so
> /usr/lib/locale/en_US.ISO8859-1/en_US.ISO8859-1.so.3
> bash-3.00$ pfiles: cannot examine 22513: no such process
> pstack: cannot examine 22513: no such process or core file
> prun: cannot control 22513: no such process
>
>
> Any ideas? Something is telling the process to continue.
>
> Jim
> --
> This message posted from opensolaris.org
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss@opensolaris.org
--
Adam Leventhal, Fishworks http://blogs.sun.com/ahl
_______________________________________________
dtrace-discuss mailing list
dtrace-discuss@opensolaris.org
