/**
* Put a long value out to the specified BB position in big-endian format.
*
* @param buf the byte buffer
* @param offset position in the buffer
* @param val long to write out
* @return incremented offset
*/
public static int putLong(ByteBuffer buf, int offset, long val) {
if (littleEndian) {
val = Long.reverseBytes(val);
}
if (buf.isDirect()) {
theUnsafe.putLong(((DirectBuffer) buf).address() + offset, val);
} else {
theUnsafe.putLong(buf.array(), BYTE_ARRAY_BASE_OFFSET + buf.arrayOffset() + offset, val);
}
return offset + Bytes.SIZEOF_LONG;
}
/**
* Writes all the remaining bytes of the {@code src} byte buffer to this buffer's current
* position, and increases both buffers' position by the number of bytes copied.
*
* @param src the source byte buffer.
* @return {@code this}
* @throws BufferOverflowException if {@code src.remaining()} is greater than this buffer's {@code
* remaining()}.
* @throws IllegalArgumentException if {@code src} is this buffer.
* @throws ReadOnlyBufferException if no changes may be made to the contents of this buffer.
*/
public ByteBuffer put(ByteBuffer src) {
if (isReadOnly()) {
throw new ReadOnlyBufferException();
}
if (src == this) {
throw new IllegalArgumentException("src == this");
}
int srcByteCount = src.remaining();
if (srcByteCount > remaining()) {
throw new BufferOverflowException();
}
Object srcObject = src.isDirect() ? src : NioUtils.unsafeArray(src);
int srcOffset = src.position();
if (!src.isDirect()) {
srcOffset += NioUtils.unsafeArrayOffset(src);
}
ByteBuffer dst = this;
Object dstObject = dst.isDirect() ? dst : NioUtils.unsafeArray(dst);
int dstOffset = dst.position();
if (!dst.isDirect()) {
dstOffset += NioUtils.unsafeArrayOffset(dst);
}
Memory.memmove(dstObject, dstOffset, srcObject, srcOffset, srcByteCount);
src.position(src.limit());
dst.position(dst.position() + srcByteCount);
return this;
}
/**
* Creates a new direct buffer by wrapping the specified initial buffer.
*
* @param maxCapacity the maximum capacity of the underlying direct buffer
*/
protected UnpooledDirectByteBuf(
ByteBufAllocator alloc, ByteBuffer initialBuffer, int maxCapacity) {
super(maxCapacity);
if (alloc == null) {
throw new NullPointerException("alloc");
}
if (initialBuffer == null) {
throw new NullPointerException("initialBuffer");
}
if (!initialBuffer.isDirect()) {
throw new IllegalArgumentException("initialBuffer is not a direct buffer.");
}
if (initialBuffer.isReadOnly()) {
throw new IllegalArgumentException("initialBuffer is a read-only buffer.");
}
int initialCapacity = initialBuffer.remaining();
if (initialCapacity > maxCapacity) {
throw new IllegalArgumentException(
String.format("initialCapacity(%d) > maxCapacity(%d)", initialCapacity, maxCapacity));
}
this.alloc = alloc;
doNotFree = true;
setByteBuffer(initialBuffer.slice().order(ByteOrder.BIG_ENDIAN));
writerIndex(initialCapacity);
leak = leakDetector.open(this);
}
/**
* invokes the clean method on the ByteBuffer's cleaner
*
* @param buffer ByteBuffer
* @return boolean true on success
*/
private static boolean clean(final java.nio.ByteBuffer buffer) {
if (buffer == null || !buffer.isDirect()) return false;
Boolean b =
(Boolean)
AccessController.doPrivileged(
new PrivilegedAction<Boolean>() {
public Boolean run() {
Boolean success = Boolean.FALSE;
try {
Method getCleanerMethod =
buffer.getClass().getMethod("cleaner", (Class<?>[]) null);
getCleanerMethod.setAccessible(true);
Object cleaner = getCleanerMethod.invoke(buffer, (Object[]) null);
Method clean = cleaner.getClass().getMethod("clean", (Class<?>[]) null);
clean.invoke(cleaner, (Object[]) null);
success = Boolean.TRUE;
} catch (Exception e) {
// This really is a show stopper on windows
// e.printStackTrace();
}
return success;
}
});
return b.booleanValue();
}
private void free(ByteBuffer oldBuf) {
if ((oldBuf == null)
|| ((maxCachedBufferSize != 0) && (oldBuf.capacity() > maxCachedBufferSize))
|| oldBuf.isReadOnly()
|| isDerived()
|| (Thread.currentThread() != ownerThread)) {
return;
}
// Add to the cache.
Queue<CachedBuffer> pool;
if (oldBuf.isDirect()) {
pool = directBuffers.get().get(oldBuf.capacity());
} else {
pool = heapBuffers.get().get(oldBuf.capacity());
}
if (pool == null) {
return;
}
// Restrict the size of the pool to prevent OOM.
if ((maxPoolSize == 0) || (pool.size() < maxPoolSize)) {
pool.offer(new CachedBuffer(oldBuf));
}
}
protected long buildResponseByteBufferBuf(ByteBuffer b, long r, final long preChain) {
if (b == null) {
return 0;
}
if (!b.hasRemaining()) {
return -NGX_HTTP_NO_CONTENT;
}
long chain = preChain;
if (b.isDirect()) {
chain =
ngx_http_clojure_mem_build_temp_chain(
r, preChain, null, ((DirectBuffer) b).address() + b.position(), b.remaining());
} else {
chain =
ngx_http_clojure_mem_build_temp_chain(
r, preChain, b.array(), BYTE_ARRAY_OFFSET, b.remaining());
}
b.position(b.limit());
return chain;
}
/**
* Returns the byte at the given offset
*
* @param buf the buffer to read
* @param offset the offset at which the byte has to be read
* @return the byte at the given offset
*/
public static byte toByte(ByteBuffer buf, int offset) {
if (buf.isDirect()) {
return theUnsafe.getByte(((DirectBuffer) buf).address() + offset);
} else {
return theUnsafe.getByte(buf.array(), BYTE_ARRAY_BASE_OFFSET + buf.arrayOffset() + offset);
}
}
/**
* read from a file channel into a byte buffer, starting at a certain position.
*
* @param channel channel to read from
* @param channelPosition position to read from
* @param dest destination {@link java.nio.ByteBuffer} to put data in
* @return total bytes read or -1 if an attempt was made to read past EOF. The method always tries
* to read all the bytes that will fit in the destination byte buffer.
*/
public static int readFromFileChannel(FileChannel channel, long channelPosition, ByteBuffer dest)
throws IOException {
if (dest.isDirect() || (dest.remaining() < READ_CHUNK_SIZE)) {
return readSingleChunk(channel, channelPosition, dest);
} else {
int bytesRead = 0;
int bytesToRead = dest.remaining();
// duplicate the buffer in order to be able to change the limit
ByteBuffer tmpBuffer = dest.duplicate();
try {
while (dest.hasRemaining()) {
tmpBuffer.limit(Math.min(dest.limit(), tmpBuffer.position() + READ_CHUNK_SIZE));
int read = readSingleChunk(channel, channelPosition, tmpBuffer);
if (read < 0) {
return read;
}
bytesRead += read;
channelPosition += read;
dest.position(tmpBuffer.position());
}
} finally {
// make sure we update byteBuffer to indicate how far we came..
dest.position(tmpBuffer.position());
}
assert bytesRead == bytesToRead
: "failed to read an entire buffer but also didn't get an EOF (read ["
+ bytesRead
+ "] needed ["
+ bytesToRead
+ "]";
return bytesRead;
}
}
/*
* MIME type is cached so that Locator doesn't need to talk to the server,
* it can just get the type and buffer and be done
*/
public CacheReference registerURICache(URI sourceURI, ByteBuffer data, String mimeType) {
if (Logger.canLog(Logger.DEBUG)) {
Logger.logMsg(
Logger.DEBUG,
"New cache entry: URI " + sourceURI + ", buffer " + data + ", MIME type " + mimeType);
}
// ensure the given ByteBuffer is a direct buffer, required for native access
if (!data.isDirect()) {
data.rewind();
ByteBuffer newData = ByteBuffer.allocateDirect(data.capacity());
newData.put(data);
data = newData;
}
CacheReference ref = new CacheReference(data, mimeType);
synchronized (uriCache) {
uriCache.put(sourceURI, new WeakReference(ref));
}
// Now register sourceURI with the disposer so we can remove it
// from uriCache when our cache entry gets collected
MediaDisposer.addResourceDisposer(ref, sourceURI, cacheDisposer);
return ref;
}
/**
* Creates a new buffer which wraps the specified NIO buffer's current slice. A modification on
* the specified buffer's content will be visible to the returned buffer.
*/
public static ByteBuf wrappedBuffer(ByteBuffer buffer) {
if (!buffer.hasRemaining()) {
return EMPTY_BUFFER;
}
if (buffer.hasArray()) {
return wrappedBuffer(
buffer.array(), buffer.arrayOffset() + buffer.position(), buffer.remaining())
.order(buffer.order());
} else if (PlatformDependent.hasUnsafe()) {
if (buffer.isReadOnly()) {
if (buffer.isDirect()) {
return new ReadOnlyUnsafeDirectByteBuf(ALLOC, buffer);
} else {
return new ReadOnlyByteBufferBuf(ALLOC, buffer);
}
} else {
return new UnpooledUnsafeDirectByteBuf(ALLOC, buffer, buffer.remaining());
}
} else {
if (buffer.isReadOnly()) {
return new ReadOnlyByteBufferBuf(ALLOC, buffer);
} else {
return new UnpooledDirectByteBuf(ALLOC, buffer, buffer.remaining());
}
}
}
public static FMOD_RESULT Memory_Initialize(
ByteBuffer poolmem,
int poollen,
FMOD_MEMORY_ALLOCCALLBACK useralloc,
FMOD_MEMORY_REALLOCCALLBACK userrealloc,
FMOD_MEMORY_FREECALLBACK userfree,
int memtypeflags) {
if (poolmem != null && !poolmem.isDirect()) {
throw new NonDirectBufferException();
}
if (useralloc != null && userrealloc != null && userfree != null) {
CallbackManager.addCallback(25, useralloc, 0);
CallbackManager.addCallback(27, userrealloc, 0);
CallbackManager.addCallback(26, userfree, 0);
} else {
useralloc = null;
userrealloc = null;
userfree = null;
}
int javaResult =
FmodExJNI.FmodEx_Memory_Initialize(
poolmem,
BufferUtils.getPositionInBytes(poolmem),
poollen,
useralloc == null ? false : true,
userrealloc == null ? false : true,
userfree == null ? false : true,
memtypeflags);
return FMOD_RESULT.get(javaResult);
}
/**
* Offset, rowStride, and pixelStride are given in bytes. Height and width are given in pixels.
*/
private void writeByteBuffer(
int width,
int height,
ByteBuffer pixels,
OutputStream dngOutput,
int pixelStride,
int rowStride,
long offset)
throws IOException {
if (width <= 0 || height <= 0) {
throw new IllegalArgumentException(
"Image with invalid width, height: (" + width + "," + height + ") passed to write");
}
long capacity = pixels.capacity();
long totalSize = rowStride * height + offset;
if (capacity < totalSize) {
throw new IllegalArgumentException(
"Image size " + capacity + " is too small (must be larger than " + totalSize + ")");
}
int minRowStride = pixelStride * width;
if (minRowStride > rowStride) {
throw new IllegalArgumentException(
"Invalid image pixel stride, row byte width "
+ minRowStride
+ " is too large, expecting "
+ rowStride);
}
pixels.clear(); // Reset mark and limit
nativeWriteImage(
dngOutput, width, height, pixels, rowStride, pixelStride, offset, pixels.isDirect());
pixels.clear();
}
/**
* Continues a multiple-part encryption or decryption operation. The data is encrypted or
* decrypted, depending on how this cipher was initialized.
*
* <p>All <code>input.remaining()</code> bytes starting at <code>input.position()</code> are
* processed. The result is stored in the output buffer.
*
* <p>Upon return, the input buffer's position will be equal to its limit; its limit will not have
* changed. The output buffer's position will have advanced by n, when n is the value returned by
* this method; the output buffer's limit will not have changed.
*
* <p>If <code>output.remaining()</code> bytes are insufficient to hold the result, a <code>
* ShortBufferException</code> is thrown.
*
* @param input the input ByteBuffer
* @param output the output ByteBuffer
* @return int number of bytes stored in <code>output</code>
* @throws ShortBufferException if there is insufficient space in the output buffer
*/
public int update(ByteBuffer input, ByteBuffer output) throws ShortBufferException {
checkState();
Preconditions.checkArgument(
input.isDirect() && output.isDirect(), "Direct buffers are required.");
int len =
update(
context,
input,
input.position(),
input.remaining(),
output,
output.position(),
output.remaining());
input.position(input.limit());
output.position(output.position() + len);
return len;
}
/**
* Put a byte value out to the specified BB position in big-endian format.
*
* @param buf the byte buffer
* @param offset position in the buffer
* @param b byte to write out
* @return incremented offset
*/
public static int putByte(ByteBuffer buf, int offset, byte b) {
if (buf.isDirect()) {
theUnsafe.putByte(((DirectBuffer) buf).address() + offset, b);
} else {
theUnsafe.putByte(buf.array(), BYTE_ARRAY_BASE_OFFSET + buf.arrayOffset() + offset, b);
}
return offset + 1;
}
public static final void checkBuffer(final ByteBuffer buffer) {
if (buffer == null) {
throw new IllegalArgumentException("buffer == null");
}
if (!buffer.isDirect()) {
throw new IllegalArgumentException("must use DirectByteBuffer");
}
}
/**
* Finishes a multiple-part operation. The data is encrypted or decrypted, depending on how this
* cipher was initialized.
*
* <p>The result is stored in the output buffer. Upon return, the output buffer's position will
* have advanced by n, where n is the value returned by this method; the output buffer's limit
* will not have changed.
*
* <p>If <code>output.remaining()</code> bytes are insufficient to hold the result, a <code>
* ShortBufferException</code> is thrown.
*
* <p>Upon finishing, this method resets this cipher object to the state it was in when previously
* initialized. That is, the object is available to encrypt or decrypt more data.
*
* <p>If any exception is thrown, this cipher object need to be reset before it can be used again.
*
* @param output the output ByteBuffer
* @return int number of bytes stored in <code>output</code>
* @throws ShortBufferException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
public int doFinal(ByteBuffer output)
throws ShortBufferException, IllegalBlockSizeException, BadPaddingException {
checkState();
Preconditions.checkArgument(output.isDirect(), "Direct buffer is required.");
int len = doFinal(context, output, output.position(), output.remaining());
output.position(output.position() + len);
return len;
}
private void readDirect(ByteBuffer buf) throws IOException {
if (!buf.isDirect()) {
throw new IllegalArgumentException("need direct buffer");
}
final int pos = buf.position();
final int sz = read(kfsAccess.getCPtr(), kfsFd, buf, pos, buf.limit());
kfsAccess.kfs_retToIOException(sz);
buf.position(pos + sz);
}
/**
* Force to unmap direct buffer if the buffer is no longer used. It is unsafe operation and
* currently a walk-around to avoid huge memory occupation caused by memory map.
*
* @param buffer the byte buffer to be unmapped
*/
public static void cleanDirectBuffer(ByteBuffer buffer) {
if (buffer == null) {
return;
}
if (buffer.isDirect()) {
Cleaner cleaner = ((DirectBuffer) buffer).cleaner();
cleaner.clean();
}
}
/**
* Copies specified number of bytes from given offset of {@code src} buffer into the {@code dest}
* buffer.
*
* @param src
* @param srcOffset
* @param dest
* @param destOffset
* @param length
*/
public static void copy(
ByteBuffer src, int srcOffset, ByteBuffer dest, int destOffset, int length) {
long srcAddress, destAddress;
Object srcBase = null, destBase = null;
if (src.isDirect()) {
srcAddress = srcOffset + ((DirectBuffer) src).address();
} else {
srcAddress = srcOffset + src.arrayOffset() + BYTE_ARRAY_BASE_OFFSET;
srcBase = src.array();
}
if (dest.isDirect()) {
destAddress = destOffset + ((DirectBuffer) dest).address();
} else {
destAddress = destOffset + BYTE_ARRAY_BASE_OFFSET + dest.arrayOffset();
destBase = dest.array();
}
unsafeCopy(srcBase, srcAddress, destBase, destAddress, length);
}
public static void clean(ByteBuffer buffer) {
if (buffer == null) return;
if ((CLEAN_SUPPORTED) && (buffer.isDirect()))
try {
Object cleaner = directBufferCleaner.invoke(buffer, new Object[0]);
directBufferCleanerClean.invoke(cleaner, new Object[0]);
} catch (Exception localException) {
}
}
public void putBuffer(ByteBuffer buf) {
if (buf.isDirect()) {
buf.clear(); // 초기화 시켜준다.
synchronized (queue) {
queue.add(buf);
queue.notifyAll();
}
}
}
@Override
@ForceInline
public void write(long offsetInRDO, @NotNull ByteBuffer bytes, int offset, int length) {
if (bytes.isDirect()) {
memory.copyMemory(((DirectBuffer) bytes).address(), address + translate(offsetInRDO), length);
} else {
memory.copyMemory(bytes.array(), offset, address + translate(offsetInRDO), length);
}
}
public ProgressHandler(
SWIGTYPE_p_direct_buffer pointer, ByteBuffer buffer, int stepsPerCallback) {
myStepsPerCallback = stepsPerCallback;
assert buffer.isDirect();
assert buffer.capacity() == 16 : buffer.capacity();
myPointer = pointer;
myBuffer = buffer;
myLongs = buffer.order(ByteOrder.nativeOrder()).asLongBuffer();
assert myLongs.capacity() == 2;
}
private void expand(int expandSize) {
snapshot();
ByteBuffer newBuff =
(buffer.isDirect()
? ByteBuffer.allocateDirect(buffer.capacity() + expandSize)
: ByteBuffer.allocate(buffer.capacity() + expandSize));
buffer.flip();
newBuff.put(buffer);
buffer = newBuff;
reset();
}
public ChannelBuffer getBuffer(ByteBuffer nioBuffer) {
if (!nioBuffer.isReadOnly() && nioBuffer.isDirect()) {
return ChannelBuffers.wrappedBuffer(nioBuffer);
}
ChannelBuffer buf = getBuffer(nioBuffer.order(), nioBuffer.remaining());
int pos = nioBuffer.position();
buf.writeBytes(nioBuffer);
nioBuffer.position(pos);
return buf;
}
public void send(ByteBuffer buf) throws Exception {
if (buf == null) return;
int offset = buf.hasArray() ? buf.arrayOffset() + buf.position() : buf.position(),
len = buf.remaining();
if (!buf.isDirect()) send(buf.array(), offset, len);
else { // by default use a copy; but of course implementers of Receiver can override this
byte[] tmp = new byte[len];
buf.get(tmp, 0, len);
send(tmp, 0, len); // will get copied again if send-queues are enabled
}
}
/** {@inheritDoc} */
@Override
public void setBuffer(ByteBuffer buf) {
assert buf != null;
if (this.buf != buf) {
this.buf = buf;
heapArr = buf.isDirect() ? null : buf.array();
baseOff = buf.isDirect() ? ((DirectBuffer) buf).address() : BYTE_ARR_OFF;
}
}
public AsyncWrite(ByteBuffer buffer, boolean complete) {
_buffer = buffer;
_len = buffer.remaining();
// Use a slice buffer for large indirect to avoid JVM pooling large direct buffers
if (_buffer.isDirect() || _len < getBufferSize()) _slice = null;
else {
_slice = _buffer.duplicate();
_buffer.position(_buffer.limit());
}
_complete = complete;
}
/**
* Put an int value out to the specified ByteBuffer offset in big-endian format.
*
* @param buf the ByteBuffer to write to
* @param offset offset in the ByteBuffer
* @param val int to write out
* @return incremented offset
*/
public static int putInt(ByteBuffer buf, int offset, int val) {
if (littleEndian) {
val = Integer.reverseBytes(val);
}
if (buf.isDirect()) {
theUnsafe.putInt(((DirectBuffer) buf).address() + offset, val);
} else {
theUnsafe.putInt(buf.array(), offset + buf.arrayOffset() + BYTE_ARRAY_BASE_OFFSET, val);
}
return offset + Bytes.SIZEOF_INT;
}
/**
* Put a short value out to the specified BB position in big-endian format.
*
* @param buf the byte buffer
* @param offset position in the buffer
* @param val short to write out
* @return incremented offset
*/
public static int putShort(ByteBuffer buf, int offset, short val) {
if (littleEndian) {
val = Short.reverseBytes(val);
}
if (buf.isDirect()) {
theUnsafe.putShort(((DirectBuffer) buf).address() + offset, val);
} else {
theUnsafe.putShort(buf.array(), BYTE_ARRAY_BASE_OFFSET + buf.arrayOffset() + offset, val);
}
return offset + Bytes.SIZEOF_SHORT;
}