1 #!/usr/sbin/dtrace -Zs 2 /* 3 * js_calls.d - count JavaScript calls using DTrace. 4 * Written for the JavaScript DTrace provider. 5 * 6 * $Id: js_calls.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ 7 * 8 * This traces activity from all browsers on the system that are 9 * running with JavaScript provider support. 10 * 11 * USAGE: js_calls.d # hit Ctrl-C to end 12 * 13 * FIELDS: 14 * FILE Filename of the JavaScript program 15 * TYPE Type of call (func/obj-new/...) 16 * NAME Descriptive name of call 17 * COUNT Number of calls during sample 18 * 19 * Filename and function names are printed if available. 20 * 21 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 22 * 23 * CDDL HEADER START 24 * 25 * The contents of this file are subject to the terms of the 26 * Common Development and Distribution License, Version 1.0 only 27 * (the "License"). You may not use this file except in compliance 28 * with the License. 29 * 30 * You can obtain a copy of the license at Docs/cddl1.txt 31 * or http://www.opensolaris.org/os/licensing. 32 * See the License for the specific language governing permissions 33 * and limitations under the License. 34 * 35 * CDDL HEADER END 36 * 37 * 09-Sep-2007 Brendan Gregg Created this. 38 */ 39 40 #pragma D option quiet 41 42 dtrace:::BEGIN 43 { 44 printf("Tracing... Hit Ctrl-C to end.\n"); 45 } 46 47 javascript*:::function-entry 48 { 49 this->name = copyinstr(arg2); 50 @calls[basename(copyinstr(arg0)), "func", this->name] = count(); 51 } 52 53 javascript*:::execute-start 54 { 55 this->filename = basename(copyinstr(arg0)); 56 @calls[this->filename, "exec", "."] = count(); 57 } 58 59 javascript*:::object-create-start 60 { 61 this->name = copyinstr(arg1); 62 this->filename = basename(copyinstr(arg0)); 63 @calls[this->filename, "obj-new", this->name] = count(); 64 } 65 66 javascript*:::object-finalize 67 { 68 this->name = copyinstr(arg1); 69 @calls["<null>", "obj-free", this->name] = count(); 70 } 71 72 dtrace:::END 73 { 74 printf(" %-24s %-10s %-30s %8s\n", "FILE", "TYPE", "NAME", "CALLS"); 75 printa(" %-24s %-10s %-30s %@8d\n", @calls); 76 } 77