[dtrace-discuss] compile error in jdk1.6 sample scripts

[Chip Bennett]

Steven,

There is no actual exit system call.  "exit" is a library subroutine 
that eventually calls "rexit" which is actually the name of the system 
call, according to the switch table.

As far as why the canned scripts are not working, I noticed the D script 
preambles specify the -Z option which allows for probe descriptions that 
don't match any probes.  However, in your E-mail, you invoke the scripts 
with the dtrace command, not using -Z.  If you had made the D scripts 
executables, and run them directly from the command line, the -Z option 
in the script preamble would have prevented the lack of a match for 
probe description "syscall::exit:entry" from causing the script to fail.

Chip

Steven Reynolds wrote:
> I am running the sample scripts included in java 1.6, and I am seeing errors. For example:
>
> #  dtrace -s class_loading_stat.d -p 7341
> dtrace: failed to compile script class_loading_stat.d: line 156: probe description syscall::exit:entry does not match any probes
> # dtrace -s gc_time_stat.d -p 7341
> dtrace: failed to compile script gc_time_stat.d: line 202: probe description syscall::exit:entry does not match any probes
>
> Other sample scripts are showing errors too.
>
> Lines 155 to 160 from class_loading_stat.d look like this:
>
> syscall::rexit:entry,
> syscall::exit:entry
> /pid == $target/
> {
>    exit(0);
> }
>
> If I remove line 156, the script seems to run OK.  Is this expected behavior? In other words, is "syscall::exit:entry" valid for some solaris versions?
>
> The details for my system are:
> # uname -a
> SunOS unknown 5.11 snv_52 i86pc i386 i86pc
> # java -version
> java version "1.6.0-rc"
> Java(TM) SE Runtime Environment (build 1.6.0-rc-b100)
> Java HotSpot(TM) Client VM (build 1.6.0-rc-b100, mixed mode, sharing)
>
> The sample scripts are located in 
>
> ${JAVA_HOME}/sample/dtrace/hotspot
>
> thanks
> Steven
>  
>  
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