#!/usr/sbin/dtrace -Zs /* * js_calldist.d - measure JavaScript elapsed times for types of operation. * Written for the JavaScript DTrace provider. * * $Id: js_calldist.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ * * This traces JavaScript activity from all browsers running on the system with * JavaScript provider support. * * USAGE: js_calldist.d # hit Ctrl-C to end * * FIELDS: * 1 Filename of the JavaScript program * 2 Type of call (func/obj-new) * 3 Name of call * * Filename and function names are printed if available. * * 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 dtrace:::BEGIN { printf("Tracing... Hit Ctrl-C to end.\n"); } javascript*:::function-entry { self->depth++; self->exclude[self->depth] = 0; self->function[self->depth] = timestamp; } javascript*:::function-return /self->function[self->depth]/ { this->elapsed_incl = timestamp - self->function[self->depth]; this->elapsed_excl = this->elapsed_incl - self->exclude[self->depth]; self->function[self->depth] = 0; self->exclude[self->depth] = 0; this->file = basename(copyinstr(arg0)); this->name = copyinstr(arg2); @types_incl[this->file, "func", this->name] = quantize(this->elapsed_incl / 1000); @types_excl[this->file, "func", this->name] = quantize(this->elapsed_excl / 1000); self->depth--; self->exclude[self->depth] += this->elapsed_incl; } javascript*:::object-create-start { self->object = timestamp; } javascript*:::object-create-done /self->object/ { this->elapsed = timestamp - self->object; self->object = 0; this->file = basename(copyinstr(arg0)); this->name = copyinstr(arg1); @types[this->file, "obj-new", this->name] = quantize(this->elapsed / 1000); self->exclude[self->depth] += this->elapsed; } dtrace:::END { printf("\nElapsed times (us),\n"); printa(" %s, %s, %s %@d\n", @types); printf("\nExclusive function elapsed times (us),\n"); printa(" %s, %s, %s %@d\n", @types_excl); printf("\nInclusive function elapsed times (us),\n"); printa(" %s, %s, %s %@d\n", @types_incl); }