#!/usr/sbin/dtrace -Zs /* * rb_flowtime.d - snoop Ruby function (method) flow using DTrace. * Written for the Ruby DTrace provider. * * $Id: rb_flowtime.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ * * This traces activity from all Ruby programs on the system that are * running with Ruby provider support. * * USAGE: rb_flowtime.d # hit Ctrl-C to end * * FIELDS: * C CPU-id * TIME(us) Time since boot, us * FILE Filename that this method belongs to * DELTA(us) Elapsed time from previous line to this line * CLASS::METHOD Ruby class and method name * * LEGEND: * -> method entry * <- method return * * Filename and method names are printed if available. * * WARNING: Watch the first column carefully, it prints the CPU-id. If it * changes, then it is very likely that the output has been shuffled. * * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. * * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at Docs/cddl1.txt * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * CDDL HEADER END * * 09-Sep-2007 Brendan Gregg Created this. */ #pragma D option quiet #pragma D option switchrate=10 self int depth; dtrace:::BEGIN { printf("%3s %-16s %-16s %9s -- %s\n", "C", "TIME(us)", "FILE", "DELTA(us)", "CLASS::METHOD"); } ruby*:::function-entry, ruby*:::function-return /self->last == 0/ { self->last = timestamp; } ruby*:::function-entry { this->delta = (timestamp - self->last) / 1000; printf("%3d %-16d %-16s %9d %*s-> %s::%s\n", cpu, timestamp / 1000, basename(copyinstr(arg2)), this->delta, self->depth * 2, "", copyinstr(arg0), copyinstr(arg1)); self->depth++; self->last = timestamp; } ruby*:::function-return { this->delta = (timestamp - self->last) / 1000; self->depth -= self->depth > 0 ? 1 : 0; printf("%3d %-16d %-16s %9d %*s<- %s::%s\n", cpu, timestamp / 1000, basename(copyinstr(arg2)), this->delta, self->depth * 2, "", copyinstr(arg0), copyinstr(arg1)); self->last = timestamp; }