1N/A#!/usr/sbin/dtrace -Zs
1N/A/*
1N/A * j_calls.d - count Java calls (method/...) using DTrace.
1N/A * Written for the Java hotspot DTrace provider.
1N/A *
1N/A * $Id: j_calls.d 19 2007-09-12 07:47:59Z brendan $
1N/A *
1N/A * This traces activity from all Java processes on the system with hotspot
1N/A * provider support (1.6.0). Method calls and object allocation are only
1N/A * visible when using the flag "+ExtendedDTraceProbes". eg,
1N/A * java -XX:+ExtendedDTraceProbes classfile
1N/A *
1N/A * USAGE: j_calls.d # hit Ctrl-C to end
1N/A *
1N/A * FIELDS:
1N/A * PID Process ID
1N/A * TYPE Type of call (see below)
1N/A * NAME Name of call
1N/A * COUNT Number of calls during sample
1N/A *
1N/A * TYPEs:
1N/A * cload class load
1N/A * method method call
1N/A * mcompile method compile
1N/A * mload compiled method load
1N/A * oalloc object alloc
1N/A * thread thread start
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*:::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/Ahotspot*:::object-alloc
1N/A{
1N/A this->class = (char *)copyin(arg1, arg2 + 1);
1N/A this->class[arg2] = '\0';
1N/A @calls[pid, "oalloc", stringof(this->class)] = count();
1N/A}
1N/A
1N/Ahotspot*:::class-loaded
1N/A{
1N/A this->class = (char *)copyin(arg0, arg1 + 1);
1N/A this->class[arg1] = '\0';
1N/A @calls[pid, "cload", stringof(this->class)] = count();
1N/A}
1N/A
1N/Ahotspot*:::thread-start
1N/A{
1N/A this->thread = (char *)copyin(arg0, arg1 + 1);
1N/A this->thread[arg1] = '\0';
1N/A @calls[pid, "thread", stringof(this->thread)] = count();
1N/A}
1N/A
1N/Ahotspot*:::method-compile-begin
1N/A{
1N/A this->class = (char *)copyin(arg0, arg1 + 1);
1N/A this->class[arg1] = '\0';
1N/A this->method = (char *)copyin(arg2, arg3 + 1);
1N/A this->method[arg3] = '\0';
1N/A this->name = strjoin(strjoin(stringof(this->class), "."),
1N/A stringof(this->method));
1N/A @calls[pid, "mcompile", this->name] = count();
1N/A}
1N/A
1N/Ahotspot*:::compiled-method-load
1N/A{
1N/A this->class = (char *)copyin(arg0, arg1 + 1);
1N/A this->class[arg1] = '\0';
1N/A this->method = (char *)copyin(arg2, arg3 + 1);
1N/A this->method[arg3] = '\0';
1N/A this->name = strjoin(strjoin(stringof(this->class), "."),
1N/A stringof(this->method));
1N/A @calls[pid, "mload", this->name] = count();
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}