--- a/jdk/src/java.base/share/classes/sun/misc/PerfCounter.java Thu Jan 14 12:03:24 2016 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,191 +0,0 @@
-/*
- * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.misc;
-
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-import java.nio.LongBuffer;
-import java.security.AccessController;
-
-/**
- * Performance counter support for internal JRE classes.
- * This class defines a fixed list of counters for the platform
- * to use as an interim solution until RFE# 6209222 is implemented.
- * The perf counters will be created in the jvmstat perf buffer
- * that the HotSpot VM creates. The default size is 32K and thus
- * the number of counters is bounded. You can alter the size
- * with {@code -XX:PerfDataMemorySize=<bytes>} option. If there is
- * insufficient memory in the jvmstat perf buffer, the C heap memory
- * will be used and thus the application will continue to run if
- * the counters added exceeds the buffer size but the counters
- * will be missing.
- *
- * See HotSpot jvmstat implementation for certain circumstances
- * that the jvmstat perf buffer is not supported.
- *
- */
-public class PerfCounter {
- private static final Perf perf =
- AccessController.doPrivileged(new Perf.GetPerfAction());
-
- // Must match values defined in hotspot/src/share/vm/runtime/perfdata.hpp
- private static final int V_Constant = 1;
- private static final int V_Monotonic = 2;
- private static final int V_Variable = 3;
- private static final int U_None = 1;
-
- private final String name;
- private final LongBuffer lb;
-
- private PerfCounter(String name, int type) {
- this.name = name;
- ByteBuffer bb = perf.createLong(name, type, U_None, 0L);
- bb.order(ByteOrder.nativeOrder());
- this.lb = bb.asLongBuffer();
- }
-
- static PerfCounter newPerfCounter(String name) {
- return new PerfCounter(name, V_Variable);
- }
-
- static PerfCounter newConstantPerfCounter(String name) {
- PerfCounter c = new PerfCounter(name, V_Constant);
- return c;
- }
-
- /**
- * Returns the current value of the perf counter.
- */
- public synchronized long get() {
- return lb.get(0);
- }
-
- /**
- * Sets the value of the perf counter to the given newValue.
- */
- public synchronized void set(long newValue) {
- lb.put(0, newValue);
- }
-
- /**
- * Adds the given value to the perf counter.
- */
- public synchronized void add(long value) {
- long res = get() + value;
- lb.put(0, res);
- }
-
- /**
- * Increments the perf counter with 1.
- */
- public void increment() {
- add(1);
- }
-
- /**
- * Adds the given interval to the perf counter.
- */
- public void addTime(long interval) {
- add(interval);
- }
-
- /**
- * Adds the elapsed time from the given start time (ns) to the perf counter.
- */
- public void addElapsedTimeFrom(long startTime) {
- add(System.nanoTime() - startTime);
- }
-
- @Override
- public String toString() {
- return name + " = " + get();
- }
-
- static class CoreCounters {
- static final PerfCounter pdt = newPerfCounter("sun.classloader.parentDelegationTime");
- static final PerfCounter lc = newPerfCounter("sun.classloader.findClasses");
- static final PerfCounter lct = newPerfCounter("sun.classloader.findClassTime");
- static final PerfCounter rcbt = newPerfCounter("sun.urlClassLoader.readClassBytesTime");
- static final PerfCounter zfc = newPerfCounter("sun.zip.zipFiles");
- static final PerfCounter zfot = newPerfCounter("sun.zip.zipFile.openTime");
- }
-
- static class WindowsClientCounters {
- static final PerfCounter d3dAvailable = newConstantPerfCounter("sun.java2d.d3d.available");
- }
-
- /**
- * Number of findClass calls
- */
- public static PerfCounter getFindClasses() {
- return CoreCounters.lc;
- }
-
- /**
- * Time (ns) spent in finding classes that includes
- * lookup and read class bytes and defineClass
- */
- public static PerfCounter getFindClassTime() {
- return CoreCounters.lct;
- }
-
- /**
- * Time (ns) spent in finding classes
- */
- public static PerfCounter getReadClassBytesTime() {
- return CoreCounters.rcbt;
- }
-
- /**
- * Time (ns) spent in the parent delegation to
- * the parent of the defining class loader
- */
- public static PerfCounter getParentDelegationTime() {
- return CoreCounters.pdt;
- }
-
- /**
- * Number of zip files opened.
- */
- public static PerfCounter getZipFileCount() {
- return CoreCounters.zfc;
- }
-
- /**
- * Time (ns) spent in opening the zip files that
- * includes building the entries hash table
- */
- public static PerfCounter getZipFileOpenTime() {
- return CoreCounters.zfot;
- }
-
- /**
- * D3D graphic pipeline available
- */
- public static PerfCounter getD3DAvailable() {
- return WindowsClientCounters.d3dAvailable;
- }
-}