1N/A#!/usr/sbin/dtrace -Zs
1N/A/*
1N/A * j_objnew.d - report Java object allocation using DTrace.
1N/A * Written for the Java hotspot DTrace provider.
1N/A *
1N/A * $Id: j_objnew.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) and the flag "+ExtendedDTraceProbes". eg,
1N/A * java -XX:+ExtendedDTraceProbes classfile
1N/A *
1N/A * USAGE: j_objnew.d # hit Ctrl-C to end
1N/A *
1N/A * FIELDS:
1N/A * PID Process ID
1N/A * OBJS Number of objects created
1N/A * CLASS.METHOD Java class and method name
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*:::object-alloc
1N/A{
1N/A this->class = (char *)copyin(arg1, arg2 + 1);
1N/A this->class[arg2] = '\0';
1N/A @objs[pid, stringof(this->class)] = count();
1N/A @dist[pid, stringof(this->class)] = quantize(arg3);
1N/A}
1N/A
1N/Adtrace:::END
1N/A{
1N/A printf("Java object allocation byte distributions by pid and class,\n");
1N/A printa(@dist);
1N/A
1N/A printf("Java object allocation count by pid and class,\n\n");
1N/A printf(" %6s %8s %s\n", "PID", "OBJS", "CLASS");
1N/A printa(" %6d %8@d %s\n", @objs);
1N/A}