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#!/usr/sbin/dtrace -Zs
/*
* sh_flowtime.d - snoop Bourne shell execution with flow and delta times.
* Written for the sh DTrace provider.
*
* $Id: sh_flowtime.d 45 2007-09-17 08:54:56Z brendan $
*
* This traces shell activity from all Bourne shells on the system that are
* running with sh provider support.
*
* USAGE: sh_flowtime.d # hit Ctrl-C to end
*
* This watches shell function entries and returns, and indents child
* function calls. Shell builtins are also printed.
*
* FIELDS:
* C CPU-id
* TIME(us) Time since boot, us
* FILE Filename that this function belongs to
* NAME Shell function or builtin name
*
* LEGEND:
* -> function entry
* <- function return
* > builtin
* | external command
*
* DELTAs:
* -> previous line to the start of this function
* <- previous line to the end of this function
* > previous line to the end of this builtin
* | previous line to the end of this command
*
* See sh_flowinfo.d for more verbose and more straightforward delta times.
*
* 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;
self uint64_t last;
dtrace:::BEGIN
{
printf("%3s %-16s %-16s %9s -- %s\n", "C", "TIME(us)", "FILE",
"DELTA(us)", "NAME");
}
sh*:::function-entry,
sh*:::function-return,
sh*:::builtin-return,
sh*:::command-return
/self->last == 0/
{
self->last = timestamp;
}
sh*:::function-entry
{
this->elapsed = (timestamp - self->last) / 1000;
printf("%3d %-16d %-16s %9d %*s-> %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg0)), this->elapsed, self->depth * 2, "",
copyinstr(arg1));
self->depth++;
self->last = timestamp;
}
sh*:::function-return
{
this->elapsed = (timestamp - self->last) / 1000;
self->depth -= self->depth > 0 ? 1 : 0;
printf("%3d %-16d %-16s %9d %*s<- %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg0)), this->elapsed, self->depth * 2, "",
copyinstr(arg1));
self->last = timestamp;
}
sh*:::builtin-return
{
this->elapsed = (timestamp - self->last) / 1000;
printf("%3d %-16d %-16s %9d %*s> %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg0)), this->elapsed, self->depth * 2, "",
copyinstr(arg1));
self->last = timestamp;
}
sh*:::command-return
{
this->elapsed = (timestamp - self->last) / 1000;
printf("%3d %-16d %-16s %9d %*s| %s\n", cpu, timestamp / 1000,
basename(copyinstr(arg0)), this->elapsed, self->depth * 2, "",
copyinstr(arg1));
self->last = timestamp;
}
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