jdk/src/jdk.jvmstat/share/classes/sun/jvmstat/perfdata/monitor/v1_0/PerfDataBufferPrologue.java
--- a/jdk/src/jdk.jvmstat/share/classes/sun/jvmstat/perfdata/monitor/v1_0/PerfDataBufferPrologue.java Fri Feb 03 09:28:13 2017 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,209 +0,0 @@
-/*
- * Copyright (c) 2004, 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.jvmstat.perfdata.monitor.v1_0;
-
-import sun.jvmstat.monitor.*;
-import sun.jvmstat.perfdata.monitor.*;
-import java.nio.*;
-
-/**
- * Class representing the 1.0 version of the HotSpot PerfData instrumentation
- * buffer header.
- * <p>
- * The PerfDataBufferPrologue2_0 class supports parsing of the version
- * specific portions of the PerfDataPrologue C structure:
- * <pre>
- * typedef struct {
- * ... // handled by superclass
- * jint used; // number of PerfData memory bytes used
- * jint overflow; // number of bytes of overflow
- * jlong mod_time_stamp; // time stamp of the last structural modification
- * } PerfDataPrologue
- * </pre>
- *
- * @author Brian Doherty
- * @since 1.5
- */
-public class PerfDataBufferPrologue extends AbstractPerfDataBufferPrologue {
-
- private static final int SUPPORTED_MAJOR_VERSION = 1;
- private static final int SUPPORTED_MINOR_VERSION = 0;
-
- /*
- * the following constants must match the field offsets and sizes
- * in the PerfDataPrologue structure in perfMemory.hpp
- */
- final static int PERFDATA_PROLOG_USED_OFFSET=8;
- final static int PERFDATA_PROLOG_USED_SIZE=4; // sizeof(int)
- final static int PERFDATA_PROLOG_OVERFLOW_OFFSET=12;
- final static int PERFDATA_PROLOG_OVERFLOW_SIZE=4; // sizeof(int)
- final static int PERFDATA_PROLOG_MODTIMESTAMP_OFFSET=16;
- final static int PERFDATA_PROLOG_MODTIMESTAMP_SIZE=8; // sizeof(long)
- final static int PERFDATA_PROLOG_SIZE=24; // sizeof(struct PerfDataProlog)
-
- // counter names for prologue psuedo counters
- final static String PERFDATA_BUFFER_SIZE_NAME = "sun.perfdata.size";
- final static String PERFDATA_BUFFER_USED_NAME = "sun.perfdata.used";
- final static String PERFDATA_OVERFLOW_NAME = "sun.perfdata.overflow";
- final static String PERFDATA_MODTIMESTAMP_NAME = "sun.perfdata.timestamp";
-
- /**
- * Create an instance of PerfDataBufferPrologue from the given
- * ByteBuffer object.
- *
- * @param byteBuffer the buffer containing the binary header data
- */
- public PerfDataBufferPrologue(ByteBuffer byteBuffer)
- throws MonitorException {
- super(byteBuffer);
- assert ((getMajorVersion() == 1) && (getMinorVersion() == 0));
- }
-
- /**
- * {@inheritDoc}
- */
- public boolean supportsAccessible() {
- return false;
- }
-
- /**
- * {@inheritDoc}
- */
- public boolean isAccessible() {
- return true;
- }
-
- /**
- * Get the utilization of the instrumentation memory buffer.
- *
- * @return int - the utilization of the buffer
- */
- public int getUsed() {
- byteBuffer.position(PERFDATA_PROLOG_USED_OFFSET);
- return byteBuffer.getInt();
- }
-
- /**
- * Get the size of the instrumentation memory buffer.
- *
- * @return int - the size of the buffer
- */
- public int getBufferSize() {
- return byteBuffer.capacity();
- }
-
- /**
- * Get the buffer overflow amount. This value is non-zero if the
- * HotSpot JVM has overflowed the instrumentation memory buffer.
- * The target JVM can be restarted with -XX:PerfDataMemSize=X to
- * create a larger memory buffer.
- *
- * @return int - the size of the buffer
- */
- public int getOverflow() {
- byteBuffer.position(PERFDATA_PROLOG_OVERFLOW_OFFSET);
- return byteBuffer.getInt();
- }
-
- /**
- * Get the time of last modification for the instrumentation
- * memory buffer. This method returns the time, as ticks since the
- * start of the target JVM, of the last structural modification to
- * the instrumentation buffer. Structural modifications correspond to
- * the addition or deletion of instrumentation objects. Updates to
- * counter values are not structural modifications.
- */
- public long getModificationTimeStamp() {
- byteBuffer.position(PERFDATA_PROLOG_MODTIMESTAMP_OFFSET);
- return byteBuffer.getLong();
- }
-
- /**
- * {@inheritDoc}
- */
- public int getSize() {
- return PERFDATA_PROLOG_SIZE; // sizeof(struct PerfDataProlog)
- }
-
- /**
- * Return an IntBuffer that accesses the used value. This is used
- * to create a Monitor object for this value.
- *
- * @return IntBuffer - a ByteBuffer that accesses the used value
- * in the instrumentation buffer header.
- * @see #getUsed()
- */
- public IntBuffer usedBuffer() {
- byteBuffer.position(PERFDATA_PROLOG_USED_OFFSET);
- IntBuffer ib = byteBuffer.asIntBuffer();
- ib.limit(1);
- return ib;
- }
-
- /**
- * Return an IntBuffer that accesses the size value. This is used
- * to create a Monitor object for this value.
- *
- * @return IntBuffer - a ByteBuffer that accesses the size value
- * in the instrumentation buffer header.
- * @see #getBufferSize()
- */
- public IntBuffer sizeBuffer() {
- IntBuffer ib = IntBuffer.allocate(1);
- ib.put(byteBuffer.capacity());
- return ib;
- }
-
- /**
- * Return an IntBuffer that accesses the overflow value. This is used
- * to create a Monitor object for this value.
- *
- * @return IntBuffer - a ByteBuffer that accesses the overflow value
- * in the instrumentation buffer header.
- * @see #getOverflow()
- */
- public IntBuffer overflowBuffer() {
- byteBuffer.position(PERFDATA_PROLOG_OVERFLOW_OFFSET);
- IntBuffer ib = byteBuffer.asIntBuffer();
- ib.limit(1);
- return ib;
- }
-
- /**
- * Return an LongBuffer that accesses the modification timestamp value.
- * This is used* to create a Monitor object for this value.
- *
- * @return LongBuffer - a ByteBuffer that accesses the modification time
- * stamp value in the instrumentation buffer header.
- * @see #getModificationTimeStamp()
- */
- public LongBuffer modificationTimeStampBuffer() {
- byteBuffer.position(PERFDATA_PROLOG_MODTIMESTAMP_OFFSET);
- LongBuffer lb = byteBuffer.asLongBuffer();
- lb.limit(1);
- return lb;
- }
-}