1 #!/usr/sbin/dtrace -Zs 2 /* 3 * tcl_flowtime.d - snoop Tcl execution showing procedure flow and delta times. 4 * Written for the Tcl DTrace provider. 5 * 6 * $Id: tcl_flowtime.d,v 1.1.1.1 2015/09/30 22:01:09 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_flowtime.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 * PID Process ID 19 * TIME(us) Time since boot, us 20 * DELTA(us) Elapsed time from previous line to this line 21 * CALL Tcl command or procedure name 22 * 23 * LEGEND: 24 * -> procedure entry 25 * <- procedure return 26 * > command entry 27 * < command return 28 * 29 * WARNING: Watch the first column carefully, it prints the CPU-id. If it 30 * changes, then it is very likely that the output has been shuffled. 31 * 32 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 33 * 34 * CDDL HEADER START 35 * 36 * The contents of this file are subject to the terms of the 37 * Common Development and Distribution License, Version 1.0 only 38 * (the "License"). You may not use this file except in compliance 39 * with the License. 40 * 41 * You can obtain a copy of the license at Docs/cddl1.txt 42 * or http://www.opensolaris.org/os/licensing. 43 * See the License for the specific language governing permissions 44 * and limitations under the License. 45 * 46 * CDDL HEADER END 47 * 48 * 09-Sep-2007 Brendan Gregg Created this. 49 */ 50 51 #pragma D option quiet 52 #pragma D option switchrate=10 53 54 self int depth; 55 56 dtrace:::BEGIN 57 { 58 printf("%3s %6s %-16s %9s -- %s\n", "C", "PID", "TIME(us)", 59 "DELTA(us)", "CALL"); 60 } 61 62 tcl*:::proc-entry, 63 tcl*:::proc-return, 64 tcl*:::cmd-entry, 65 tcl*:::cmd-return 66 /self->last == 0/ 67 { 68 self->last = timestamp; 69 } 70 71 tcl*:::proc-entry 72 { 73 this->delta = (timestamp - self->last) / 1000; 74 printf("%3d %6d %-16d %9d %*s-> %s\n", cpu, pid, timestamp / 1000, 75 this->delta, self->depth * 2, "", copyinstr(arg0)); 76 self->depth++; 77 self->last = timestamp; 78 } 79 80 tcl*:::proc-return 81 { 82 this->delta = (timestamp - self->last) / 1000; 83 self->depth -= self->depth > 0 ? 1 : 0; 84 printf("%3d %6d %-16d %9d %*s<- %s\n", cpu, pid, timestamp / 1000, 85 this->delta, self->depth * 2, "", copyinstr(arg0)); 86 self->last = timestamp; 87 } 88 89 tcl*:::cmd-entry 90 { 91 this->delta = (timestamp - self->last) / 1000; 92 printf("%3d %6d %-16d %9d %*s > %s\n", cpu, pid, timestamp / 1000, 93 this->delta, self->depth * 2, "", copyinstr(arg0)); 94 self->depth++; 95 self->last = timestamp; 96 } 97 98 tcl*:::cmd-return 99 { 100 this->delta = (timestamp - self->last) / 1000; 101 self->depth -= self->depth > 0 ? 1 : 0; 102 printf("%3d %6d %-16d %9d %*s < %s\n", cpu, pid, timestamp / 1000, 103 this->delta, self->depth * 2, "", copyinstr(arg0)); 104 self->last = timestamp; 105 } 106