1235368Sgnn#!/usr/sbin/dtrace -Zs 2235368Sgnn/* 3235368Sgnn * rb_malloc.d - Ruby operations and libc malloc statistics. 4235368Sgnn * Written for the Ruby DTrace provider. 5235368Sgnn * 6235368Sgnn * $Id: rb_malloc.d 20 2007-09-12 09:28:22Z brendan $ 7235368Sgnn * 8235368Sgnn * WARNING: This script is not 100% accurate; This prints libc malloc() byte 9235368Sgnn * distributions by "recent" Ruby operation, which we hope will be usually 10235368Sgnn * relevant. This is an experimental script that may be improved over time. 11235368Sgnn * 12235368Sgnn * USAGE: rb_malloc.d { -p PID | -c cmd } # hit Ctrl-C to end 13235368Sgnn * 14235368Sgnn * FIELDS: 15235368Sgnn * 1 Filename of the Ruby program 16235368Sgnn * 2 Type of operation (method/objnew/startup) 17235368Sgnn * 3 Name of operation 18235368Sgnn * 19235368Sgnn * Filename and method names are printed if available. 20235368Sgnn * 21235368Sgnn * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 22235368Sgnn * 23235368Sgnn * CDDL HEADER START 24235368Sgnn * 25235368Sgnn * The contents of this file are subject to the terms of the 26235368Sgnn * Common Development and Distribution License, Version 1.0 only 27235368Sgnn * (the "License"). You may not use this file except in compliance 28235368Sgnn * with the License. 29235368Sgnn * 30235368Sgnn * You can obtain a copy of the license at Docs/cddl1.txt 31235368Sgnn * or http://www.opensolaris.org/os/licensing. 32235368Sgnn * See the License for the specific language governing permissions 33235368Sgnn * and limitations under the License. 34235368Sgnn * 35235368Sgnn * CDDL HEADER END 36235368Sgnn * 37235368Sgnn * 09-Sep-2007 Brendan Gregg Created this. 38235368Sgnn */ 39235368Sgnn 40235368Sgnn#pragma D option quiet 41235368Sgnn 42235368Sgnnself string filename; 43235368Sgnn 44235368Sgnndtrace:::BEGIN 45235368Sgnn{ 46235368Sgnn printf("Tracing... Hit Ctrl-C to end.\n"); 47235368Sgnn} 48235368Sgnn 49235368Sgnnruby$target:::function-entry 50235368Sgnn{ 51235368Sgnn self->file = basename(copyinstr(arg2)); 52235368Sgnn self->type = "method"; 53235368Sgnn self->name = strjoin(strjoin(copyinstr(arg0), "::"), copyinstr(arg1)); 54235368Sgnn} 55235368Sgnn 56235368Sgnnruby$target:::object-create-start 57235368Sgnn{ 58235368Sgnn self->file = basename(copyinstr(arg1)); 59235368Sgnn self->type = "objnew"; 60235368Sgnn self->name = copyinstr(arg0); 61235368Sgnn} 62235368Sgnn 63235368Sgnnpid$target:libc:malloc:entry 64235368Sgnn/self->file != NULL/ 65235368Sgnn{ 66235368Sgnn @mallocs[self->file, self->type, self->name] = quantize(arg0); 67235368Sgnn} 68235368Sgnn 69235368Sgnnpid$target:libc:malloc:entry 70235368Sgnn/self->file == NULL/ 71235368Sgnn{ 72235368Sgnn @mallocs["ruby", "startup", "-"] = quantize(arg0); 73235368Sgnn} 74235368Sgnn 75235368Sgnn 76235368Sgnndtrace:::END 77235368Sgnn{ 78235368Sgnn printf("Ruby malloc byte distributions by recent Ruby operation,\n"); 79235368Sgnn printa(" %s, %s, %s %@d\n", @mallocs); 80235368Sgnn} 81