[PATCH 0 of 4] Add support for dtrace compatible sdt probes on GNU/Linux

[Mark Wielaard]

On Sun, 2012-07-22 at 08:10 +1000, David Holmes wrote:
> On 21/07/2012 7:08 PM, Mark Wielaard wrote:
> > On Sat, Jul 21, 2012 at 05:48:21PM +1000, David Holmes wrote:
> >> I'd love to see webrevs for these patches.
> >
> > Patches as webrevs here: http://icedtea.classpath.org/~mjw/webrev/7170638/
> 
> Thanks. Unfortunately it didn't help with patch 1 as I can't mentally 
> expand all those nested macros (in original or new). :(

It just follows the pattern from the rest of jni.h. That patch is really
just a cleanup to make things more consistent. From my explanation:

        The first patch is just a consistency cleanup patch. The JNI Set
        and
        SetStatic Field methods used HS_DTRACE_PROBE_CDECL_N and HS_DTRACE_PROBE_N
        directly instead of just using DTRACE_PROBE[N] like all other JNI methods.
        This doesn't matter for the Solaris macros, but on GNU/Linux the macros
        don't use direct function declarations (which is introduced in the second
        patch).

Back in May Keith said:

        Ok, might be that it's fine.  I don't remember if there was a
        reason that SetStatic was different from the other JNI calls,
        but it certainly could just have been an omission in refactoring
        or something.  We just need to make sure that it still works
        (solaris-dtrace-wise).  It's certainly better this way!
        
So if at least this patch can now finally be applied we are making at
least some progress.

Thanks,

Mark