JDK 11 java.base.jmod - Base Module
JDK 11 java.base.jmod is the JMOD file for JDK 11 Base module.
JDK 11 Base module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\java.base.jmod.
JDK 11 Base module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.
JDK 11 Base module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\java.base.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ java/nio/DirectByteBuffer.java
/*
* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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// -- This file was mechanically generated: Do not edit! -- //
package java.nio;
import java.io.FileDescriptor;
import java.lang.ref.Reference;
import jdk.internal.misc.VM;
import jdk.internal.ref.Cleaner;
import sun.nio.ch.DirectBuffer;
class DirectByteBuffer
extends MappedByteBuffer
implements DirectBuffer
{
// Cached array base offset
private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset(byte[].class);
// Cached unaligned-access capability
protected static final boolean UNALIGNED = Bits.unaligned();
// Base address, used in all indexing calculations
// NOTE: moved up to Buffer.java for speed in JNI GetDirectBufferAddress
// protected long address;
// An object attached to this buffer. If this buffer is a view of another
// buffer then we use this field to keep a reference to that buffer to
// ensure that its memory isn't freed before we are done with it.
private final Object att;
public Object attachment() {
return att;
}
private static class Deallocator
implements Runnable
{
private long address;
private long size;
private int capacity;
private Deallocator(long address, long size, int capacity) {
assert (address != 0);
this.address = address;
this.size = size;
this.capacity = capacity;
}
public void run() {
if (address == 0) {
// Paranoia
return;
}
UNSAFE.freeMemory(address);
address = 0;
Bits.unreserveMemory(size, capacity);
}
}
private final Cleaner cleaner;
public Cleaner cleaner() { return cleaner; }
// Primary constructor
//
DirectByteBuffer(int cap) { // package-private
super(-1, 0, cap, cap);
boolean pa = VM.isDirectMemoryPageAligned();
int ps = Bits.pageSize();
long size = Math.max(1L, (long)cap + (pa ? ps : 0));
Bits.reserveMemory(size, cap);
long base = 0;
try {
base = UNSAFE.allocateMemory(size);
} catch (OutOfMemoryError x) {
Bits.unreserveMemory(size, cap);
throw x;
}
UNSAFE.setMemory(base, size, (byte) 0);
if (pa && (base % ps != 0)) {
// Round up to page boundary
address = base + ps - (base & (ps - 1));
} else {
address = base;
}
cleaner = Cleaner.create(this, new Deallocator(base, size, cap));
att = null;
}
// Invoked to construct a direct ByteBuffer referring to the block of
// memory. A given arbitrary object may also be attached to the buffer.
//
DirectByteBuffer(long addr, int cap, Object ob) {
super(-1, 0, cap, cap);
address = addr;
cleaner = null;
att = ob;
}
// Invoked only by JNI: NewDirectByteBuffer(void*, long)
//
private DirectByteBuffer(long addr, int cap) {
super(-1, 0, cap, cap);
address = addr;
cleaner = null;
att = null;
}
// For memory-mapped buffers -- invoked by FileChannelImpl via reflection
//
protected DirectByteBuffer(int cap, long addr,
FileDescriptor fd,
Runnable unmapper)
{
super(-1, 0, cap, cap, fd);
address = addr;
cleaner = Cleaner.create(this, unmapper);
att = null;
}
// For duplicates and slices
//
DirectByteBuffer(DirectBuffer db, // package-private
int mark, int pos, int lim, int cap,
int off)
{
super(mark, pos, lim, cap);
address = db.address() + off;
cleaner = null;
att = db;
}
@Override
Object base() {
return null;
}
public ByteBuffer slice() {
int pos = this.position();
int lim = this.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
int off = (pos << 0);
assert (off >= 0);
return new DirectByteBuffer(this, -1, 0, rem, rem, off);
}
public ByteBuffer slice(int pos, int lim) {
assert (pos >= 0);
assert (pos <= lim);
int rem = lim - pos;
return new DirectByteBuffer(this, -1, 0, rem, rem, pos);
}
public ByteBuffer duplicate() {
return new DirectByteBuffer(this,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
0);
}
public ByteBuffer asReadOnlyBuffer() {
return new DirectByteBufferR(this,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
0);
}
public long address() {
return address;
}
private long ix(int i) {
return address + ((long)i << 0);
}
public byte get() {
try {
return ((UNSAFE.getByte(ix(nextGetIndex()))));
} finally {
Reference.reachabilityFence(this);
}
}
public byte get(int i) {
try {
return ((UNSAFE.getByte(ix(checkIndex(i)))));
} finally {
Reference.reachabilityFence(this);
}
}
public ByteBuffer get(byte[] dst, int offset, int length) {
if (((long)length << 0) > Bits.JNI_COPY_TO_ARRAY_THRESHOLD) {
checkBounds(offset, length, dst.length);
int pos = position();
int lim = limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
if (length > rem)
throw new BufferUnderflowException();
long dstOffset = ARRAY_BASE_OFFSET + ((long)offset << 0);
try {
UNSAFE.copyMemory(null,
ix(pos),
dst,
dstOffset,
(long)length << 0);
} finally {
Reference.reachabilityFence(this);
}
position(pos + length);
} else {
super.get(dst, offset, length);
}
return this;
}
public ByteBuffer put(byte x) {
try {
UNSAFE.putByte(ix(nextPutIndex()), ((x)));
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer put(int i, byte x) {
try {
UNSAFE.putByte(ix(checkIndex(i)), ((x)));
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer put(ByteBuffer src) {
if (src instanceof DirectByteBuffer) {
if (src == this)
throw createSameBufferException();
DirectByteBuffer sb = (DirectByteBuffer)src;
int spos = sb.position();
int slim = sb.limit();
assert (spos <= slim);
int srem = (spos <= slim ? slim - spos : 0);
int pos = position();
int lim = limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
if (srem > rem)
throw new BufferOverflowException();
try {
UNSAFE.copyMemory(sb.ix(spos), ix(pos), (long)srem << 0);
} finally {
Reference.reachabilityFence(sb);
Reference.reachabilityFence(this);
}
sb.position(spos + srem);
position(pos + srem);
} else if (src.hb != null) {
int spos = src.position();
int slim = src.limit();
assert (spos <= slim);
int srem = (spos <= slim ? slim - spos : 0);
put(src.hb, src.offset + spos, srem);
src.position(spos + srem);
} else {
super.put(src);
}
return this;
}
public ByteBuffer put(byte[] src, int offset, int length) {
if (((long)length << 0) > Bits.JNI_COPY_FROM_ARRAY_THRESHOLD) {
checkBounds(offset, length, src.length);
int pos = position();
int lim = limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
if (length > rem)
throw new BufferOverflowException();
long srcOffset = ARRAY_BASE_OFFSET + ((long)offset << 0);
try {
UNSAFE.copyMemory(src,
srcOffset,
null,
ix(pos),
(long)length << 0);
} finally {
Reference.reachabilityFence(this);
}
position(pos + length);
} else {
super.put(src, offset, length);
}
return this;
}
public ByteBuffer compact() {
int pos = position();
int lim = limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
try {
UNSAFE.copyMemory(ix(pos), ix(0), (long)rem << 0);
} finally {
Reference.reachabilityFence(this);
}
position(rem);
limit(capacity());
discardMark();
return this;
}
public boolean isDirect() {
return true;
}
public boolean isReadOnly() {
return false;
}
private char getChar(long a) {
try {
char x = UNSAFE.getCharUnaligned(null, a, bigEndian);
return (x);
} finally {
Reference.reachabilityFence(this);
}
}
public char getChar() {
try {
return getChar(ix(nextGetIndex((1 << 1))));
} finally {
Reference.reachabilityFence(this);
}
}
public char getChar(int i) {
try {
return getChar(ix(checkIndex(i, (1 << 1))));
} finally {
Reference.reachabilityFence(this);
}
}
private ByteBuffer putChar(long a, char x) {
try {
char y = (x);
UNSAFE.putCharUnaligned(null, a, y, bigEndian);
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer putChar(char x) {
putChar(ix(nextPutIndex((1 << 1))), x);
return this;
}
public ByteBuffer putChar(int i, char x) {
putChar(ix(checkIndex(i, (1 << 1))), x);
return this;
}
public CharBuffer asCharBuffer() {
int off = this.position();
int lim = this.limit();
assert (off <= lim);
int rem = (off <= lim ? lim - off : 0);
int size = rem >> 1;
if (!UNALIGNED && ((address + off) % (1 << 1) != 0)) {
return (bigEndian
? (CharBuffer)(new ByteBufferAsCharBufferB(this,
-1,
0,
size,
size,
address + off))
: (CharBuffer)(new ByteBufferAsCharBufferL(this,
-1,
0,
size,
size,
address + off)));
} else {
return (nativeByteOrder
? (CharBuffer)(new DirectCharBufferU(this,
-1,
0,
size,
size,
off))
: (CharBuffer)(new DirectCharBufferS(this,
-1,
0,
size,
size,
off)));
}
}
private short getShort(long a) {
try {
short x = UNSAFE.getShortUnaligned(null, a, bigEndian);
return (x);
} finally {
Reference.reachabilityFence(this);
}
}
public short getShort() {
try {
return getShort(ix(nextGetIndex((1 << 1))));
} finally {
Reference.reachabilityFence(this);
}
}
public short getShort(int i) {
try {
return getShort(ix(checkIndex(i, (1 << 1))));
} finally {
Reference.reachabilityFence(this);
}
}
private ByteBuffer putShort(long a, short x) {
try {
short y = (x);
UNSAFE.putShortUnaligned(null, a, y, bigEndian);
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer putShort(short x) {
putShort(ix(nextPutIndex((1 << 1))), x);
return this;
}
public ByteBuffer putShort(int i, short x) {
putShort(ix(checkIndex(i, (1 << 1))), x);
return this;
}
public ShortBuffer asShortBuffer() {
int off = this.position();
int lim = this.limit();
assert (off <= lim);
int rem = (off <= lim ? lim - off : 0);
int size = rem >> 1;
if (!UNALIGNED && ((address + off) % (1 << 1) != 0)) {
return (bigEndian
? (ShortBuffer)(new ByteBufferAsShortBufferB(this,
-1,
0,
size,
size,
address + off))
: (ShortBuffer)(new ByteBufferAsShortBufferL(this,
-1,
0,
size,
size,
address + off)));
} else {
return (nativeByteOrder
? (ShortBuffer)(new DirectShortBufferU(this,
-1,
0,
size,
size,
off))
: (ShortBuffer)(new DirectShortBufferS(this,
-1,
0,
size,
size,
off)));
}
}
private int getInt(long a) {
try {
int x = UNSAFE.getIntUnaligned(null, a, bigEndian);
return (x);
} finally {
Reference.reachabilityFence(this);
}
}
public int getInt() {
try {
return getInt(ix(nextGetIndex((1 << 2))));
} finally {
Reference.reachabilityFence(this);
}
}
public int getInt(int i) {
try {
return getInt(ix(checkIndex(i, (1 << 2))));
} finally {
Reference.reachabilityFence(this);
}
}
private ByteBuffer putInt(long a, int x) {
try {
int y = (x);
UNSAFE.putIntUnaligned(null, a, y, bigEndian);
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer putInt(int x) {
putInt(ix(nextPutIndex((1 << 2))), x);
return this;
}
public ByteBuffer putInt(int i, int x) {
putInt(ix(checkIndex(i, (1 << 2))), x);
return this;
}
public IntBuffer asIntBuffer() {
int off = this.position();
int lim = this.limit();
assert (off <= lim);
int rem = (off <= lim ? lim - off : 0);
int size = rem >> 2;
if (!UNALIGNED && ((address + off) % (1 << 2) != 0)) {
return (bigEndian
? (IntBuffer)(new ByteBufferAsIntBufferB(this,
-1,
0,
size,
size,
address + off))
: (IntBuffer)(new ByteBufferAsIntBufferL(this,
-1,
0,
size,
size,
address + off)));
} else {
return (nativeByteOrder
? (IntBuffer)(new DirectIntBufferU(this,
-1,
0,
size,
size,
off))
: (IntBuffer)(new DirectIntBufferS(this,
-1,
0,
size,
size,
off)));
}
}
private long getLong(long a) {
try {
long x = UNSAFE.getLongUnaligned(null, a, bigEndian);
return (x);
} finally {
Reference.reachabilityFence(this);
}
}
public long getLong() {
try {
return getLong(ix(nextGetIndex((1 << 3))));
} finally {
Reference.reachabilityFence(this);
}
}
public long getLong(int i) {
try {
return getLong(ix(checkIndex(i, (1 << 3))));
} finally {
Reference.reachabilityFence(this);
}
}
private ByteBuffer putLong(long a, long x) {
try {
long y = (x);
UNSAFE.putLongUnaligned(null, a, y, bigEndian);
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer putLong(long x) {
putLong(ix(nextPutIndex((1 << 3))), x);
return this;
}
public ByteBuffer putLong(int i, long x) {
putLong(ix(checkIndex(i, (1 << 3))), x);
return this;
}
public LongBuffer asLongBuffer() {
int off = this.position();
int lim = this.limit();
assert (off <= lim);
int rem = (off <= lim ? lim - off : 0);
int size = rem >> 3;
if (!UNALIGNED && ((address + off) % (1 << 3) != 0)) {
return (bigEndian
? (LongBuffer)(new ByteBufferAsLongBufferB(this,
-1,
0,
size,
size,
address + off))
: (LongBuffer)(new ByteBufferAsLongBufferL(this,
-1,
0,
size,
size,
address + off)));
} else {
return (nativeByteOrder
? (LongBuffer)(new DirectLongBufferU(this,
-1,
0,
size,
size,
off))
: (LongBuffer)(new DirectLongBufferS(this,
-1,
0,
size,
size,
off)));
}
}
private float getFloat(long a) {
try {
int x = UNSAFE.getIntUnaligned(null, a, bigEndian);
return Float.intBitsToFloat(x);
} finally {
Reference.reachabilityFence(this);
}
}
public float getFloat() {
try {
return getFloat(ix(nextGetIndex((1 << 2))));
} finally {
Reference.reachabilityFence(this);
}
}
public float getFloat(int i) {
try {
return getFloat(ix(checkIndex(i, (1 << 2))));
} finally {
Reference.reachabilityFence(this);
}
}
private ByteBuffer putFloat(long a, float x) {
try {
int y = Float.floatToRawIntBits(x);
UNSAFE.putIntUnaligned(null, a, y, bigEndian);
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer putFloat(float x) {
putFloat(ix(nextPutIndex((1 << 2))), x);
return this;
}
public ByteBuffer putFloat(int i, float x) {
putFloat(ix(checkIndex(i, (1 << 2))), x);
return this;
}
public FloatBuffer asFloatBuffer() {
int off = this.position();
int lim = this.limit();
assert (off <= lim);
int rem = (off <= lim ? lim - off : 0);
int size = rem >> 2;
if (!UNALIGNED && ((address + off) % (1 << 2) != 0)) {
return (bigEndian
? (FloatBuffer)(new ByteBufferAsFloatBufferB(this,
-1,
0,
size,
size,
address + off))
: (FloatBuffer)(new ByteBufferAsFloatBufferL(this,
-1,
0,
size,
size,
address + off)));
} else {
return (nativeByteOrder
? (FloatBuffer)(new DirectFloatBufferU(this,
-1,
0,
size,
size,
off))
: (FloatBuffer)(new DirectFloatBufferS(this,
-1,
0,
size,
size,
off)));
}
}
private double getDouble(long a) {
try {
long x = UNSAFE.getLongUnaligned(null, a, bigEndian);
return Double.longBitsToDouble(x);
} finally {
Reference.reachabilityFence(this);
}
}
public double getDouble() {
try {
return getDouble(ix(nextGetIndex((1 << 3))));
} finally {
Reference.reachabilityFence(this);
}
}
public double getDouble(int i) {
try {
return getDouble(ix(checkIndex(i, (1 << 3))));
} finally {
Reference.reachabilityFence(this);
}
}
private ByteBuffer putDouble(long a, double x) {
try {
long y = Double.doubleToRawLongBits(x);
UNSAFE.putLongUnaligned(null, a, y, bigEndian);
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public ByteBuffer putDouble(double x) {
putDouble(ix(nextPutIndex((1 << 3))), x);
return this;
}
public ByteBuffer putDouble(int i, double x) {
putDouble(ix(checkIndex(i, (1 << 3))), x);
return this;
}
public DoubleBuffer asDoubleBuffer() {
int off = this.position();
int lim = this.limit();
assert (off <= lim);
int rem = (off <= lim ? lim - off : 0);
int size = rem >> 3;
if (!UNALIGNED && ((address + off) % (1 << 3) != 0)) {
return (bigEndian
? (DoubleBuffer)(new ByteBufferAsDoubleBufferB(this,
-1,
0,
size,
size,
address + off))
: (DoubleBuffer)(new ByteBufferAsDoubleBufferL(this,
-1,
0,
size,
size,
address + off)));
} else {
return (nativeByteOrder
? (DoubleBuffer)(new DirectDoubleBufferU(this,
-1,
0,
size,
size,
off))
: (DoubleBuffer)(new DirectDoubleBufferS(this,
-1,
0,
size,
size,
off)));
}
}
}
⏎ java/nio/DirectByteBuffer.java
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File name: java.base-11.0.1-src.zip File size: 8740354 bytes Release date: 2018-11-04 Download
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