From: Yeshpal Jain <jainyeshpal@gmail.com>
To: systemtap@sourceware.org
Subject: Run system tap with a user defined function
Date: Sun, 7 Aug 2022 21:39:23 +0530 [thread overview]
Message-ID: <CAH67PmMAQjodRctsCo+V1t83oyNnmJ+AgqpeWsoRVS8DCszSwA@mail.gmail.com> (raw)
I want to run a user defined function inside one of the function probes.
for ex :
#! /usr/bin/env stap
function __read_phase:long(phase:long) %{ /* pure */
struct phase *phase_s = (struct phase *)((long)STAP_ARG_phase);
int phase_st = phase->p_state;
STAP_RETURN(phase_st);
%} /* <-- function body */
function trace_phase(entry_p, extra) {
%( $# > 1 %? if (tid() in trace) %)
printf("%s%s%s %s phase = %d\n",
thread_indent (entry_p),
(entry_p>0?"->":"<-"),
ppfunc (),
extra, __read_phase($fom))
}
probe process("/root/test/.libs/mylib.so").function("*_test_func").call {
trace_phase(1, $$parms) }
i am running stap with -g option,
when i compile i am getting error,
error: dereferencing pointer to incomplete type ‘struct phase’
struct phase is a structure defined in mylibrary,
Is there a way to include custom directory/headers while generating system
tap.
--
Thanks and Regards,
Yeshpal Jain.
next reply other threads:[~2022-08-07 16:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-07 16:09 Yeshpal Jain [this message]
2022-08-08 9:30 ` Bryn M. Reeves
2022-08-09 5:17 ` Yeshpal Jain
2022-08-12 7:16 ` Yeshpal Jain
2022-08-16 17:53 ` Frank Ch. Eigler
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