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#!/usr/sbin/dtrace -Zs
/*
* js_flowinfo.d - JavaScript function flow with info using DTrace.
* Written for the JavaScript DTrace provider.
*
* $Id: js_flowinfo.d 63 2007-10-04 04:34:38Z brendan $
*
* This traces activity from all browsers on the system that are running
* with JavaScript provider support.
*
* USAGE: js_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 JavScript program
* LINE Line number of filename
* TYPE Type of call (func)
* FUNC Function name
*
* LEGEND:
* -> function entry
* <- function return
*
* Filename and function 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("%3s %6s %10s %16s:%-4s %-8s -- %s\n", "C", "PID", "DELTA(us)",
"FILE", "LINE", "TYPE", "FUNC");
}
javascript*:::function-info,
javascript*:::function-return
/self->last == 0/
{
self->last = timestamp;
}
javascript*:::function-info
{
this->delta = (timestamp - self->last) / 1000;
printf("%3d %6d %10d %16s:%-4d %-8s %*s-> %s\n", cpu, pid,
this->delta, basename(copyinstr(arg4)), arg5, "func",
self->depth * 2, "", copyinstr(arg2));
self->depth++;
self->last = timestamp;
}
javascript*:::function-return
{
this->delta = (timestamp - self->last) / 1000;
self->depth -= self->depth > 0 ? 1 : 0;
printf("%3d %6d %10d %16s:- %-8s %*s<- %s\n", cpu, pid,
this->delta, basename(copyinstr(arg0)), "func", self->depth * 2,
"", copyinstr(arg2));
self->last = timestamp;
}
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