1 #!/usr/sbin/dtrace -Zs 2 /* 3 * rb_malloc.d - Ruby operations and libc malloc statistics. 4 * Written for the Ruby DTrace provider. 5 * 6 * $Id: rb_malloc.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ 7 * 8 * WARNING: This script is not 100% accurate; This prints libc malloc() byte 9 * distributions by "recent" Ruby operation, which we hope will be usually 10 * relevant. This is an experimental script that may be improved over time. 11 * 12 * USAGE: rb_malloc.d { -p PID | -c cmd } # hit Ctrl-C to end 13 * 14 * FIELDS: 15 * 1 Filename of the Ruby program 16 * 2 Type of operation (method/objnew/startup) 17 * 3 Name of operation 18 * 19 * Filename and method 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 self string filename; 43 44 dtrace:::BEGIN 45 { 46 printf("Tracing... Hit Ctrl-C to end.\n"); 47 } 48 49 ruby$target:::function-entry 50 { 51 self->file = basename(copyinstr(arg2)); 52 self->type = "method"; 53 self->name = strjoin(strjoin(copyinstr(arg0), "::"), copyinstr(arg1)); 54 } 55 56 ruby$target:::object-create-start 57 { 58 self->file = basename(copyinstr(arg1)); 59 self->type = "objnew"; 60 self->name = copyinstr(arg0); 61 } 62 63 pid$target:libc:malloc:entry 64 /self->file != NULL/ 65 { 66 @mallocs[self->file, self->type, self->name] = quantize(arg0); 67 } 68 69 pid$target:libc:malloc:entry 70 /self->file == NULL/ 71 { 72 @mallocs["ruby", "startup", "-"] = quantize(arg0); 73 } 74 75 76 dtrace:::END 77 { 78 printf("Ruby malloc byte distributions by recent Ruby operation,\n"); 79 printa(" %s, %s, %s %@d\n", @mallocs); 80 } 81