#!/usr/sbin/dtrace -Zs
/*
* pl_flowtime.d - snoop Perl subroutines with flow and delta times.
* Written for the Perl DTrace provider.
*
* $Id: pl_flowtime.d 41 2007-09-17 02:20:10Z brendan $
*
* This traces shell activity from Perl programs on the system that are
* running with Perl provider support.
*
* USAGE: pl_flowtime.d # hit Ctrl-C to end
*
* This watches Perl subroutine entries and returns, and indents child
* subroutine calls.
*
* FIELDS:
* C CPU-id
* TIME(us) Time since boot, us
* FILE Filename that this subroutine belongs to
* DELTA(us) Elapsed time from previous line to this line
* SUB Perl subroutine name
*
* LEGEND:
* -> method entry
* <- method 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;
self int last;
dtrace:::BEGIN
{
printf("%3s %-16s %-16s %9s -- %s\n", "C", "TIME(us)", "FILE",
"DELTA(us)", "SUB");
}
perl*:::sub-entry,
perl*:::sub-return
/self->last == 0/
{
self->last = timestamp;
}
perl*:::sub-entry
{
this->delta = (timestamp - self->last) / 1000;
printf("%3d %-16d %-16s %9d %*s-> %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg1)), this->delta, 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("%3d %-16d %-16s %9d %*s<- %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg1)), this->delta, self->depth * 2, "",
copyinstr(arg0));
self->last = timestamp;
}