1N/A#!/usr/sbin/dtrace -Zs
1N/A/*
1N/A * j_syscolors.d - trace Java method flow plus syscalls, in color.
1N/A * Written for the Java hotspot DTrace provider.
1N/A *
1N/A * $Id: j_syscolors.d 58 2007-10-01 13:36:29Z brendan $
1N/A *
1N/A * This traces Java methods if the hotspot provider exists (1.6.0) and
1N/A * the flag "+ExtendedDTraceProbes" is used. eg,
1N/A * java -XX:+ExtendedDTraceProbes classfile
1N/A *
1N/A * USAGE: j_syscolors.d { -p PID | -c cmd } # hit Ctrl-C to end
1N/A *
1N/A * This watches Java method entries and returns, and indents child
1N/A * method calls.
1N/A *
1N/A * FIELDS:
1N/A * C CPU-id
1N/A * PID Process ID
1N/A * TID Thread ID
1N/A * DELTA(us) Elapsed time from previous line to this line
1N/A * TYPE Type of call (func/syscall)
1N/A * NAME Java method or syscall name
1N/A *
1N/A * If the flow appears to jump, check the TID column - the JVM may have
1N/A * switched to another thread.
1N/A *
1N/A * WARNING: Watch the first column carefully, it prints the CPU-id. If it
1N/A * changes, then it is very likely that the output has been shuffled.
1N/A * Changes in TID will appear to shuffle output, as we change from one thread
1N/A * depth to the next. See Docs/Notes/ALLjavaflow.txt for additional notes.
1N/A *
1N/A * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
1N/A *
1N/A * CDDL HEADER START
1N/A *
1N/A * The contents of this file are subject to the terms of the
1N/A * Common Development and Distribution License, Version 1.0 only
1N/A * (the "License"). You may not use this file except in compliance
1N/A * with the License.
1N/A *
1N/A * You can obtain a copy of the license at Docs/cddl1.txt
1N/A * or http://www.opensolaris.org/os/licensing.
1N/A * See the License for the specific language governing permissions
1N/A * and limitations under the License.
1N/A *
1N/A * CDDL HEADER END
1N/A *
1N/A * 09-Sep-2007 Brendan Gregg Created this.
1N/A */
1N/A
1N/A/* increasing bufsize can reduce drops */
1N/A#pragma D option bufsize=32m
1N/A#pragma D option quiet
1N/A#pragma D option switchrate=10
1N/A
1N/Aself int depth[int];
1N/A
1N/Adtrace:::BEGIN
1N/A{
1N/A color_java = "\033[2;35m"; /* violet, faint */
1N/A color_line = "\033[1;35m"; /* violet, bold */
1N/A color_syscall = "\033[2;32m"; /* green, faint */
1N/A color_off = "\033[0m"; /* default */
1N/A
1N/A printf("%3s %6s/%-5s %9s %-8s -- %s\n", "C", "PID", "TID", "DELTA(us)",
1N/A "TYPE", "NAME");
1N/A}
1N/A
1N/Ahotspot$target:::method-entry,
1N/Ahotspot$target:::method-return,
1N/Asyscall:::entry,
1N/Asyscall:::return
1N/A/self->last == 0 && pid == $target/
1N/A{
1N/A self->last = timestamp;
1N/A}
1N/A
1N/Ahotspot$target:::method-entry
1N/A{
1N/A this->delta = (timestamp - self->last) / 1000;
1N/A this->class = (char *)copyin(arg1, arg2 + 1);
1N/A this->class[arg2] = '\0';
1N/A this->method = (char *)copyin(arg3, arg4 + 1);
1N/A this->method[arg4] = '\0';
1N/A
1N/A printf("%s%3d %6d/%-5d %9d %-8s %*s-> %s.%s%s\n", color_java, cpu,
1N/A pid, tid, this->delta, "method", self->depth[arg0] * 2, "",
1N/A stringof(this->class), stringof(this->method), color_off);
1N/A self->depth[arg0]++;
1N/A self->depthlast = self->depth[arg0];
1N/A self->last = timestamp;
1N/A}
1N/A
1N/Ahotspot$target:::method-return
1N/A{
1N/A this->delta = (timestamp - self->last) / 1000;
1N/A this->class = (char *)copyin(arg1, arg2 + 1);
1N/A this->class[arg2] = '\0';
1N/A this->method = (char *)copyin(arg3, arg4 + 1);
1N/A this->method[arg4] = '\0';
1N/A
1N/A self->depth[arg0] -= self->depth[arg0] > 0 ? 1 : 0;
1N/A printf("%s%3d %6d/%-5d %9d %-8s %*s<- %s.%s%s\n", color_java, cpu,
1N/A pid, tid, this->delta, "method", self->depth[arg0] * 2, "",
1N/A stringof(this->class), stringof(this->method), color_off);
1N/A self->depthlast = self->depth[arg0];
1N/A self->last = timestamp;
1N/A}
1N/A
1N/Asyscall:::entry
1N/A/pid == $target/
1N/A{
1N/A this->delta = (timestamp - self->last) / 1000;
1N/A printf("%s%3d %6d/%-5d %9d %-8s %*s-> %s%s\n", color_syscall,
1N/A cpu, pid, tid, this->delta, "syscall", self->depthlast * 2, "",
1N/A probefunc, color_off);
1N/A self->last = timestamp;
1N/A}
1N/A
1N/Asyscall:::return
1N/A/pid == $target/
1N/A{
1N/A this->delta = (timestamp - self->last) / 1000;
1N/A printf("%s%3d %6d/%-5d %9d %-8s %*s<- %s%s\n", color_syscall,
1N/A cpu, pid, tid, this->delta, "syscall", self->depthlast * 2, "",
1N/A probefunc, color_off);
1N/A self->last = timestamp;
1N/A}
1N/A
1N/Aproc:::exit
1N/A/pid == $target/
1N/A{
1N/A exit(0);
1N/A}