#!/usr/sbin/dtrace -Zs
/*
* php_flow.d - snoop PHP execution showing function flow.
* Written for the PHP DTrace provider.
*
* $Id: php_flow.d 53 2007-09-24 04:58:38Z brendan $
*
* This traces PHP activity from all PHP programs on the system
* running with PHP provider support.
*
* USAGE: php_flow.d # hit Ctrl-C to end
*
* This watches PHP function entries and returns, and indents child
* function calls.
*
* FIELDS:
* C CPU-id
* TIME(us) Time since boot, us
* FILE Filename that this function belongs to
* FUNC Function name
*
* LEGEND:
* -> function entry
* <- function return
*
* 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 %-16s %-16s -- %s\n", "C", "TIME(us)", "FILE", "FUNC");
}
php*:::function-entry
/arg0/
{
printf("%3d %-16d %-16s %*s-> %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg1)), self->depth * 2, "", copyinstr(arg0));
self->depth++;
}
php*:::function-return
/arg0/
{
self->depth -= self->depth > 0 ? 1 : 0;
printf("%3d %-16d %-16s %*s<- %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg1)), self->depth * 2, "", copyinstr(arg0));
}