I have a code that has several probes with the same probename. When I define
the probe to use a translator and then try to match for all the occurances of
the probename in a D script I get the following error:
dtrace: invalid probe specifier mpi__test$target:::RECV_REQ_ACT_EV { printf("%d
%d", args[0]->bar, args[0]->baz); }: in action list: args[ ] may not be
referenced because probe description mpi__test9055:::RECV_REQ_ACT_EV matches an
unstable set of probes
However if I specify the function the probe exists in things work fine. Like
so,
dtrace -c main -n 'mpi__test$target::recv_1:RECV_REQ_ACT_EV { printf("%d %d",
args[0]->bar, args[0]->baz); }'
dtrace: description 'mpi__test$target::recv_1:RECV_REQ_ACT_EV ' matched 1 probe
dtrace: pid 9057 has exited
CPU ID FUNCTION:NAME
0 43963 recv_1:RECV_REQ_ACT_EV 1 2
My question is there a way that if these two probes with the same probename can
be defined such that the failing case would work? The reason I want to do this
is in the case of MPI the probenames are Events and the certain events can be
triggered in multiple places in the code. I'd also would like to avoid
requiring D script writers to have to explicitly state which functions the
probenames occur because I could see this possibly changing with time.
A simple example of what I am doing follows:
----main.c----
void main() {
recv_1();
recv_2();
}
----recv.c----
#include <sys/sdt.h>
void
recv_1()
{
struct foo {
int bar;
int baz;
} me;
me.bar = 1;
me.baz = 2;
DTRACE_PROBE1(mpi__test, RECV_REQ_ACT_EV, &me);
}
void
recv_2()
{
struct foo {
int bar;
int baz;
} me;
me.bar = 3;
me.baz = 4;
DTRACE_PROBE1(mpi__test, RECV_REQ_ACT_EV, &me);
}
----mpi_provider.d----
typedef struct infoo_t {
int dummy;
} infoo_t;
typedef struct outfoo {
int dummy;
} outfoo_t;
translator outfoo_t <infoo_t *P> {
dummy = P->dummy;
};
provider mpi__test {
probe RECV_REQ_ACT_EV (infoo_t *i) : (outfoo_t *i);
};
----mpi.d----
typedef struct infoo_t {
int bar;
int baz;
} infoo_t;
typedef struct outfoo {
int bar;
int baz;
} outfoo_t;
#pragma D binding "1.5" translator
translator outfoo_t <infoo_t *P> {
bar = *(int *)copyin((uintptr_t)&P->bar, sizeof (int));
baz = *(int *)copyin((uintptr_t)&P->baz, sizeof (int));
};
thanks,
--td
--
This message posted from opensolaris.org
_______________________________________________
dtrace-discuss mailing list
[email protected]
