102 lines
2.6 KiB
D
Executable File
102 lines
2.6 KiB
D
Executable File
#!/usr/sbin/dtrace -Zs
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/*
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* js_calldist.d - measure JavaScript elapsed times for types of operation.
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* Written for the JavaScript DTrace provider.
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*
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* $Id: js_calldist.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $
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*
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* This traces JavaScript activity from all browsers running on the system with
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* JavaScript provider support.
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*
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* USAGE: js_calldist.d # hit Ctrl-C to end
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*
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* FIELDS:
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* 1 Filename of the JavaScript program
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* 2 Type of call (func/obj-new)
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* 3 Name of call
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*
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* Filename and function names are printed if available.
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*
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* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
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*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at Docs/cddl1.txt
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* CDDL HEADER END
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*
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* 09-Sep-2007 Brendan Gregg Created this.
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*/
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#pragma D option quiet
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dtrace:::BEGIN
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{
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printf("Tracing... Hit Ctrl-C to end.\n");
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}
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javascript*:::function-entry
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{
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self->depth++;
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self->exclude[self->depth] = 0;
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self->function[self->depth] = timestamp;
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}
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javascript*:::function-return
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/self->function[self->depth]/
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{
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this->elapsed_incl = timestamp - self->function[self->depth];
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this->elapsed_excl = this->elapsed_incl - self->exclude[self->depth];
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self->function[self->depth] = 0;
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self->exclude[self->depth] = 0;
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this->file = basename(copyinstr(arg0));
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this->name = copyinstr(arg2);
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@types_incl[this->file, "func", this->name] =
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quantize(this->elapsed_incl / 1000);
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@types_excl[this->file, "func", this->name] =
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quantize(this->elapsed_excl / 1000);
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self->depth--;
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self->exclude[self->depth] += this->elapsed_incl;
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}
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javascript*:::object-create-start
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{
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self->object = timestamp;
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}
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javascript*:::object-create-done
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/self->object/
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{
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this->elapsed = timestamp - self->object;
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self->object = 0;
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this->file = basename(copyinstr(arg0));
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this->name = copyinstr(arg1);
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@types[this->file, "obj-new", this->name] =
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quantize(this->elapsed / 1000);
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self->exclude[self->depth] += this->elapsed;
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}
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dtrace:::END
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{
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printf("\nElapsed times (us),\n");
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printa(" %s, %s, %s %@d\n", @types);
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printf("\nExclusive function elapsed times (us),\n");
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printa(" %s, %s, %s %@d\n", @types_excl);
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printf("\nInclusive function elapsed times (us),\n");
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printa(" %s, %s, %s %@d\n", @types_incl);
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}
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