JDK 17 java.base.jmod - Base Module
JDK 17 java.base.jmod is the JMOD file for JDK 17 Base module.
JDK 17 Base module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\java.base.jmod.
JDK 17 Base module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 Base module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\java.base.
You can click and view the content of each source code file in the list below.
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⏎ java/nio/DirectCharBufferU.java
/*
* Copyright (c) 2000, 2021, 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 java.util.Objects;
import jdk.internal.access.foreign.MemorySegmentProxy;
import jdk.internal.misc.ScopedMemoryAccess.Scope;
import jdk.internal.misc.VM;
import jdk.internal.ref.Cleaner;
import sun.nio.ch.DirectBuffer;
class DirectCharBufferU
extends CharBuffer
implements DirectBuffer
{
// Cached array base offset
private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset(char[].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;
}
public Cleaner cleaner() { return null; }
// For duplicates and slices
//
DirectCharBufferU(DirectBuffer db, // package-private
int mark, int pos, int lim, int cap, int off,
MemorySegmentProxy segment)
{
super(mark, pos, lim, cap,
segment);
address = ((Buffer)db).address + off;
Object attachment = db.attachment();
att = (attachment == null ? db : attachment);
}
@Override
Object base() {
return null;
}
public CharBuffer slice() {
int pos = this.position();
int lim = this.limit();
int rem = (pos <= lim ? lim - pos : 0);
int off = (pos << 1);
assert (off >= 0);
return new DirectCharBufferU(this,
-1,
0,
rem,
rem,
off,
segment);
}
@Override
public CharBuffer slice(int index, int length) {
Objects.checkFromIndexSize(index, length, limit());
return new DirectCharBufferU(this,
-1,
0,
length,
length,
index << 1,
segment);
}
public CharBuffer duplicate() {
return new DirectCharBufferU(this,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
0,
segment);
}
public CharBuffer asReadOnlyBuffer() {
return new DirectCharBufferRU(this,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
0,
segment);
}
public long address() {
Scope scope = scope();
if (scope != null) {
if (scope.ownerThread() == null) {
throw new UnsupportedOperationException("ByteBuffer derived from shared segments not supported");
}
try {
scope.checkValidState();
} catch (Scope.ScopedAccessError e) {
throw new IllegalStateException("This segment is already closed");
}
}
return address;
}
private long ix(int i) {
return address + ((long)i << 1);
}
public char get() {
try {
return ((SCOPED_MEMORY_ACCESS.getChar(scope(), null, ix(nextGetIndex()))));
} finally {
Reference.reachabilityFence(this);
}
}
public char get(int i) {
try {
return ((SCOPED_MEMORY_ACCESS.getChar(scope(), null, ix(checkIndex(i)))));
} finally {
Reference.reachabilityFence(this);
}
}
char getUnchecked(int i) {
try {
return ((SCOPED_MEMORY_ACCESS.getChar(null, null, ix(i))));
} finally {
Reference.reachabilityFence(this);
}
}
public CharBuffer put(char x) {
try {
SCOPED_MEMORY_ACCESS.putChar(scope(), null, ix(nextPutIndex()), ((x)));
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public CharBuffer put(int i, char x) {
try {
SCOPED_MEMORY_ACCESS.putChar(scope(), null, ix(checkIndex(i)), ((x)));
} finally {
Reference.reachabilityFence(this);
}
return this;
}
public CharBuffer compact() {
int pos = position();
int lim = limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
try {
// null is passed as destination Scope to avoid checking scope() twice
SCOPED_MEMORY_ACCESS.copyMemory(scope(), null, null,
ix(pos), null, ix(0), (long)rem << 1);
} finally {
Reference.reachabilityFence(this);
}
position(rem);
limit(capacity());
discardMark();
return this;
}
public boolean isDirect() {
return true;
}
public boolean isReadOnly() {
return false;
}
public String toString(int start, int end) {
Objects.checkFromToIndex(start, end, limit());
try {
int len = end - start;
char[] ca = new char[len];
CharBuffer cb = CharBuffer.wrap(ca);
CharBuffer db = this.duplicate();
db.position(start);
db.limit(end);
cb.put(db);
return new String(ca);
} catch (StringIndexOutOfBoundsException x) {
throw new IndexOutOfBoundsException();
}
}
// --- Methods to support CharSequence ---
public CharBuffer subSequence(int start, int end) {
int pos = position();
int lim = limit();
assert (pos <= lim);
pos = (pos <= lim ? pos : lim);
int len = lim - pos;
Objects.checkFromToIndex(start, end, len);
return new DirectCharBufferU(this,
-1,
pos + start,
pos + end,
capacity(),
offset, segment);
}
public ByteOrder order() {
return ((ByteOrder.nativeOrder() != ByteOrder.BIG_ENDIAN)
? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN);
}
ByteOrder charRegionOrder() {
return order();
}
}
⏎ java/nio/DirectCharBufferU.java
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File name: java.base-17.0.5-src.zip File size: 8883851 bytes Release date: 2022-09-13 Download
2023-09-26, ≈922🔥, 1💬
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