1 #!/usr/sbin/dtrace -Zs 2 /* 3 * tcl_procflow.d - snoop Tcl execution showing procedure flow using DTrace. 4 * Written for the Tcl DTrace provider. 5 * 6 * $Id: tcl_procflow.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ 7 * 8 * This traces activity from all Tcl processes on the system with DTrace 9 * provider support (tcl8.4.16). 10 * 11 * USAGE: tcl_procflow.d # hit Ctrl-C to end 12 * 13 * This watches Tcl method entries and returns, and indents child 14 * method calls. 15 * 16 * FIELDS: 17 * C CPU-id 18 * TIME(us) Time since boot, us 19 * PID Process ID 20 * PROCEDURE Tcl procedure name 21 * 22 * LEGEND: 23 * -> proc entry 24 * <- proc return 25 * 26 * WARNING: Watch the first column carefully, it prints the CPU-id. If it 27 * changes, then it is very likely that the output has been shuffled. 28 * 29 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 30 * 31 * CDDL HEADER START 32 * 33 * The contents of this file are subject to the terms of the 34 * Common Development and Distribution License, Version 1.0 only 35 * (the "License"). You may not use this file except in compliance 36 * with the License. 37 * 38 * You can obtain a copy of the license at Docs/cddl1.txt 39 * or http://www.opensolaris.org/os/licensing. 40 * See the License for the specific language governing permissions 41 * and limitations under the License. 42 * 43 * CDDL HEADER END 44 * 45 * 09-Sep-2007 Brendan Gregg Created this. 46 */ 47 48 #pragma D option quiet 49 #pragma D option switchrate=10 50 51 self int depth; 52 53 dtrace:::BEGIN 54 { 55 printf("%3s %6s %-16s -- %s\n", "C", "PID", "TIME(us)", "PROCEDURE"); 56 } 57 58 tcl*:::proc-entry 59 { 60 printf("%3d %6d %-16d %*s-> %s\n", cpu, pid, timestamp / 1000, 61 self->depth * 2, "", copyinstr(arg0)); 62 self->depth++; 63 } 64 65 tcl*:::proc-return 66 { 67 self->depth -= self->depth > 0 ? 1 : 0; 68 printf("%3d %6d %-16d %*s<- %s\n", cpu, pid, timestamp / 1000, 69 self->depth * 2, "", copyinstr(arg0)); 70 } 71