1N/A#!/usr/sbin/dtrace -Zs
1N/A/*
1N/A * j_syscalls.d - count Java methods and syscalls using DTrace.
1N/A * Written for the Java hotspot DTrace provider.
1N/A *
1N/A * $Id: j_syscalls.d 19 2007-09-12 07:47:59Z 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_syscalls.d { -p PID | -c cmd } # hit Ctrl-C to end
1N/A *
1N/A * FIELDS:
1N/A * PID Process ID
1N/A * TYPE Type of call (method/syscall)
1N/A * NAME Name of call
1N/A * COUNT Number of calls during sample
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#pragma D option quiet
1N/A
1N/Adtrace:::BEGIN
1N/A{
1N/A printf("Tracing... Hit Ctrl-C to end.\n");
1N/A}
1N/A
1N/Ahotspot$target:::method-entry
1N/A{
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 this->name = strjoin(strjoin(stringof(this->class), "."),
1N/A stringof(this->method));
1N/A @calls[pid, "method", this->name] = count();
1N/A}
1N/A
1N/Asyscall:::entry
1N/A/pid == $target/
1N/A{
1N/A @calls[pid, "syscall", probefunc] = count();
1N/A}
1N/A
1N/A
1N/Adtrace:::END
1N/A{
1N/A printf(" %6s %-8s %-52s %8s\n", "PID", "TYPE", "NAME", "COUNT");
1N/A printa(" %6d %-8s %-52s %@8d\n", @calls);
1N/A}