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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
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*
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*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common
* Development and Distribution License("CDDL") (collectively, the
* "License"). You may not use this file except in compliance with the
* License. You can obtain a copy of the License at
* http://www.netbeans.org/cddl-gplv2.html
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* However, if you add GPL Version 2 code and therefore, elected the GPL
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package org.netbeans.lib.profiler.heap;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
/**
* @author Tomas Hurka
*/
abstract class AbstractLongMap {
//~ Inner Classes ------------------------------------------------------------------------------------------------------------
abstract class Entry {
}
//~ Instance fields ----------------------------------------------------------------------------------------------------------
private final int VALUE_SIZE;
final int ENTRY_SIZE;
private File tempFile;
long fileSize;
private long keys;
final int KEY_SIZE;
final int ID_SIZE;
final int FOFFSET_SIZE;
Data dumpBuffer;
//~ Constructors -------------------------------------------------------------------------------------------------------------
AbstractLongMap(int size,int idSize,int foffsetSize,int valueSize) throws FileNotFoundException, IOException {
assert idSize == 4 || idSize == 8;
assert foffsetSize == 4 || foffsetSize == 8;
keys = (size * 4L) / 3L;
ID_SIZE = idSize;
FOFFSET_SIZE = foffsetSize;
KEY_SIZE = ID_SIZE;
VALUE_SIZE = valueSize;
ENTRY_SIZE = KEY_SIZE + VALUE_SIZE;
fileSize = keys * ENTRY_SIZE;
tempFile = File.createTempFile("NBProfiler", ".map"); // NOI18N
RandomAccessFile file = new RandomAccessFile(tempFile, "rw"); // NOI18N
if (Boolean.getBoolean("org.netbeans.lib.profiler.heap.zerofile")) { // NOI18N
byte[] zeros = new byte[512*1024];
while(file.length() Integer.MAX_VALUE) {
dumpBuffer = new LongMemoryMappedData(file, length);
} else {
dumpBuffer = new MemoryMappedData(file, length);
}
} catch (IOException ex) {
if (ex.getCause() instanceof OutOfMemoryError) {
dumpBuffer = new FileData(file, length);
} else {
throw ex;
}
}
}
long getID(long index) {
if (ID_SIZE == 4) {
return ((long)dumpBuffer.getInt(index)) & 0xFFFFFFFFL;
}
return dumpBuffer.getLong(index);
}
void putID(long index,long key) {
if (ID_SIZE == 4) {
dumpBuffer.putInt(index,(int)key);
} else {
dumpBuffer.putLong(index,key);
}
}
long getFoffset(long index) {
if (FOFFSET_SIZE == 4) {
return dumpBuffer.getInt(index);
}
return dumpBuffer.getLong(index);
}
void putFoffset(long index,long key) {
if (FOFFSET_SIZE == 4) {
dumpBuffer.putInt(index,(int)key);
} else {
dumpBuffer.putLong(index,key);
}
}
private long getIndex(long key) {
long hash = key & 0x7FFFFFFFFFFFFFFFL;
return (hash % keys) * ENTRY_SIZE;
}
private long getNextIndex(long index) {
index += ENTRY_SIZE;
if (index >= fileSize) {
index = 0;
}
return index;
}
private static boolean isLinux() {
String osName = System.getProperty("os.name"); // NOI18N
return osName.endsWith("Linux"); // NOI18N
}
abstract Entry createEntry(long index);
abstract Entry createEntry(long index,long value);
interface Data {
//~ Methods --------------------------------------------------------------------------------------------------------------
byte getByte(long index);
int getInt(long index);
long getLong(long index);
void putByte(long index, byte data);
void putInt(long index, int data);
void putLong(long index, long data);
}
private class FileData implements Data {
//~ Instance fields ------------------------------------------------------------------------------------------------------
RandomAccessFile file;
byte[] buf;
boolean bufferModified;
long offset;
final static int BUFFER_SIZE = 128;
//~ Constructors ---------------------------------------------------------------------------------------------------------
FileData(RandomAccessFile f, long length) throws IOException {
file = f;
buf = new byte[ENTRY_SIZE*BUFFER_SIZE];
}
//~ Methods --------------------------------------------------------------------------------------------------------------
public synchronized byte getByte(long index) {
int i = loadBufferIfNeeded(index);
return buf[i];
}
public synchronized int getInt(long index) {
int i = loadBufferIfNeeded(index);
int ch1 = ((int) buf[i++]) & 0xFF;
int ch2 = ((int) buf[i++]) & 0xFF;
int ch3 = ((int) buf[i++]) & 0xFF;
int ch4 = ((int) buf[i]) & 0xFF;
return ((ch1 << 24) + (ch2 << 16) + (ch3 << 8) + (ch4 << 0));
}
public synchronized long getLong(long index) {
int i = loadBufferIfNeeded(index);
return (((long)buf[i++] << 56) +
((long)(buf[i++] & 255) << 48) +
((long)(buf[i++] & 255) << 40) +
((long)(buf[i++] & 255) << 32) +
((long)(buf[i++] & 255) << 24) +
((buf[i++] & 255) << 16) +
((buf[i++] & 255) << 8) +
((buf[i++] & 255) << 0));
}
public synchronized void putByte(long index, byte data) {
int i = loadBufferIfNeeded(index);
buf[i] = data;
bufferModified = true;
}
public synchronized void putInt(long index, int data) {
int i = loadBufferIfNeeded(index);
buf[i++] = (byte) (data >>> 24);
buf[i++] = (byte) (data >>> 16);
buf[i++] = (byte) (data >>> 8);
buf[i++] = (byte) (data >>> 0);
bufferModified = true;
}
public synchronized void putLong(long index, long data) {
int i = loadBufferIfNeeded(index);
buf[i++] = (byte) (data >>> 56);
buf[i++] = (byte) (data >>> 48);
buf[i++] = (byte) (data >>> 40);
buf[i++] = (byte) (data >>> 32);
buf[i++] = (byte) (data >>> 24);
buf[i++] = (byte) (data >>> 16);
buf[i++] = (byte) (data >>> 8);
buf[i++] = (byte) (data >>> 0);
bufferModified = true;
}
private int loadBufferIfNeeded(long index) {
int i = (int) (index % (ENTRY_SIZE * BUFFER_SIZE));
long newOffset = index - i;
if (offset != newOffset) {
try {
if (bufferModified) {
file.seek(offset);
file.write(buf,0,getBufferSize(offset));
bufferModified = false;
}
file.seek(newOffset);
file.readFully(buf,0,getBufferSize(newOffset));
} catch (IOException ex) {
ex.printStackTrace();
}
offset = newOffset;
}
return i;
}
private int getBufferSize(long off) {
int size = buf.length;
if (fileSize-off> BUFFER_SIZE_BITS);
}
private int getBufferOffset(long index) {
return (int) (index & BUFFER_SIZE_MASK);
}
}
}
