#!/usr/sbin/dtrace -Zs
/*
* pl_flowinfo.d - snoop Perl subroutine flow with info using DTrace.
* Written for the Perl DTrace provider.
*
* $Id: pl_flowinfo.d 41 2007-09-17 02:20:10Z brendan $
*
* This traces activity from all Perl programs on the system that are
* running with Perl provider support.
*
* USAGE: pl_flowinfo.d # hit Ctrl-C to end
*
* FIELDS:
* C CPU-id
* PID Process ID
* DELTA(us) Elapsed time from previous line to this line
* FILE Filename of the Perl program
* LINE Line number of filename
* TYPE Type of call (sub)
* SUB Perl subroutine
*
* LEGEND:
* -> subroutine entry
* <- subroutine return
*
* Filename and subroutine names are printed if available.
*
* WARNING: Watch the first column carefully, it prints the CPU-id. If it
* changes, then it is very likely that the output has been shuffled.
*
* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at Docs/cddl1.txt
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* CDDL HEADER END
*
* 09-Sep-2007 Brendan Gregg Created this.
*/
#pragma D option quiet
#pragma D option switchrate=10
self int depth;
dtrace:::BEGIN
{
printf("%s %6s %10s %16s:%-4s %-8s -- %s\n", "C", "PID", "DELTA(us)",
"FILE", "LINE", "TYPE", "SUB");
}
perl*:::sub-entry,
perl*:::sub-return
/self->last == 0/
{
self->last = timestamp;
}
perl*:::sub-entry
{
this->delta = (timestamp - self->last) / 1000;
printf("%d %6d %10d %16s:%-4d %-8s %*s-> %s\n", cpu, pid, this->delta,
basename(copyinstr(arg1)), arg2, "sub", self->depth * 2, "",
copyinstr(arg0));
self->depth++;
self->last = timestamp;
}
perl*:::sub-return
{
this->delta = (timestamp - self->last) / 1000;
self->depth -= self->depth > 0 ? 1 : 0;
printf("%d %6d %10d %16s:%-4d %-8s %*s<- %s\n", cpu, pid, this->delta,
basename(copyinstr(arg1)), arg2, "sub", self->depth * 2, "",
copyinstr(arg0));
self->last = timestamp;
}