Ok, I've looked at the iSCSI_provider.d and except for the translator code I
don't see anything obvious. In order to simplify things I've created a small
program that exhibits the same issue.
The compilation and failing dtrace execution follows:
% cc -c debug.c
% dtrace -G -32 -s usdt.d debug.o
% cc -o main main.c usdt.o debug.o
% dtrace -c main -n 'mpi__test$target::: { printf("%d",args[0]->bar)}'
dtrace: invalid probe specifier mpi__test$target::: {
printf("%d",args[0]->bar)}: in action list: failed to resolve translated type
for args[0]
The code is as follows:
-----main.c------
void main() {
dprintf();
}
-----debug.c-----
#include <sys/sdt.h>
void
dprintf()
{
struct foo {
int bar;
int baz;
} me;
me.bar = 1;
me.baz = 2;
DTRACE_PROBE1(mpi__test, DEBUG_MESSAGE, &me);
}
-----usdt.d-----
typedef struct foo {
int bar;
int baz;
} foo_t;
provider mpi__test {
probe DEBUG_MESSAGE(foo_t *);
};
thanks,
--td
> You can certainly access typed arguments from USDT
> probes. Can you send
> the full script? If you're using the conninfo_t you
> may want to take a look
> at what I did in the iSCSI target provider and some
> scripts that Brendan
> Gregg wrote that use the provider.
>
> Adam
>
> On Wed, Sep 05, 2007 at 12:16:50PM -0700, Terry
> Dontje wrote:
> > Is trying to access a typed argument from a USDT
> probe allowed?
> > I have a script that does "printf("%s\n",
> copyinstr(args[0]->ci_protocol);" and I get the error
> message of "dtrace: failed to compile script
> mpiconn.d: line 12: failed to resolve translated type
> for args[0]"?
> >
> > --td
> >
> >
> > --
> > This message posted from opensolaris.org
> > _______________________________________________
> > dtrace-discuss mailing list
> > [email protected]
>
> --
> Adam Leventhal, FishWorks
> http://blogs.sun.com/ahl
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