OpenJDK 27 · jdk.jfr.internal.ChunksChannel · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private ReadableByteChannel	channel
private final Iterator<RepositoryChunk>	chunks
private RepositoryChunk	current

Access	Constructor and Description
public	ChunksChannel(List<RepositoryChunk> chunks)

Method Summary

Modifier and Type	Method and Description
public void	close() Implements java.nio.channels.Channel.close. Closes this channel.
public boolean	isOpen() Implements java.nio.channels.Channel.isOpen. Tells whether or not this channel is open.
private boolean	nextChannel()
private boolean	nextChunk()
public int	read(ByteBuffer dst) Implements java.nio.channels.ReadableByteChannel.read. Reads a sequence of bytes from this channel into the given buffer.
public long	transferTo(FileChannel out)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

channel	back to summary
private ReadableByteChannel channel

chunks	back to summary
private final Iterator<RepositoryChunk> chunks

current	back to summary
private RepositoryChunk current

ChunksChannel	back to summary
public ChunksChannel(List<RepositoryChunk> chunks) throws IOException

Method Detail

close back to summary

close	back to summary
public void close() throws IOException Implements java.nio.channels.Channel.close. Doc from java.nio.channels.Channel.close. Closes this channel. After a channel is closed, any further attempt to invoke I/O operations upon it will cause a `ClosedChannelException` to be thrown. If this channel is already closed then invoking this method has no effect. This method may be invoked at any time. If some other thread has already invoked it, however, then another invocation will block until the first invocation is complete, after which it will return without effect. Annotations @Override Exceptions IOException: If an I/O error occurs

public void close() throws IOException

Implements java.nio.channels.Channel.close.

Doc from java.nio.channels.Channel.close.

Closes this channel.

After a channel is closed, any further attempt to invoke I/O operations upon it will cause a ClosedChannelException to be thrown.

If this channel is already closed then invoking this method has no effect.

This method may be invoked at any time. If some other thread has already invoked it, however, then another invocation will block until the first invocation is complete, after which it will return without effect.

Annotations

@Override

Exceptions

IOException:: If an I/O error occurs

isOpen	back to summary
public boolean isOpen() Implements java.nio.channels.Channel.isOpen. Doc from java.nio.channels.Channel.isOpen. Tells whether or not this channel is open. Annotations @Override

isOpen

back to summary

public boolean isOpen()

Implements java.nio.channels.Channel.isOpen.

Doc from java.nio.channels.Channel.isOpen.

Tells whether or not this channel is open.

Annotations

@Override

nextChannel	back to summary
private boolean nextChannel() throws IOException

nextChunk	back to summary
private boolean nextChunk()

read back to summary

read	back to summary
public int read(ByteBuffer dst) throws IOException Implements java.nio.channels.ReadableByteChannel.read. Doc from java.nio.channels.ReadableByteChannel.read. Reads a sequence of bytes from this channel into the given buffer. An attempt is made to read up to r bytes from the channel, where r is the number of bytes remaining in the buffer, that is, `dst.remaining()`, at the moment this method is invoked. Suppose that a byte sequence of length n is read, where `0` `<=` n `<=` r. This byte sequence will be transferred into the buffer so that the first byte in the sequence is at index p and the last byte is at index p `+` n `-` `1`, where p is the buffer's position at the moment this method is invoked. Upon return the buffer's position will be equal to p `+` n; its limit will not have changed. A read operation might not fill the buffer, and in fact it might not read any bytes at all. Whether or not it does so depends upon the nature and state of the channel. A socket channel in non-blocking mode, for example, cannot read any more bytes than are immediately available from the socket's input buffer; similarly, a file channel cannot read any more bytes than remain in the file. It is guaranteed, however, that if a channel is in blocking mode and there is at least one byte remaining in the buffer then this method will block until at least one byte is read. This method may be invoked at any time. If another thread has already initiated a read operation upon this channel, however, then an invocation of this method will block until the first operation is complete. Annotations @Override Exceptions IOException: If some other I/O error occurs

public int read(ByteBuffer dst) throws IOException

Implements java.nio.channels.ReadableByteChannel.read.

Doc from java.nio.channels.ReadableByteChannel.read.

Reads a sequence of bytes from this channel into the given buffer.

An attempt is made to read up to r bytes from the channel, where r is the number of bytes remaining in the buffer, that is, dst.remaining(), at the moment this method is invoked.

Suppose that a byte sequence of length n is read, where 0 <= n <= r. This byte sequence will be transferred into the buffer so that the first byte in the sequence is at index p and the last byte is at index p + n - 1, where p is the buffer's position at the moment this method is invoked. Upon return the buffer's position will be equal to p + n; its limit will not have changed.

A read operation might not fill the buffer, and in fact it might not read any bytes at all. Whether or not it does so depends upon the nature and state of the channel. A socket channel in non-blocking mode, for example, cannot read any more bytes than are immediately available from the socket's input buffer; similarly, a file channel cannot read any more bytes than remain in the file. It is guaranteed, however, that if a channel is in blocking mode and there is at least one byte remaining in the buffer then this method will block until at least one byte is read.

This method may be invoked at any time. If another thread has already initiated a read operation upon this channel, however, then an invocation of this method will block until the first operation is complete.

Annotations

@Override

Exceptions

IOException:: If some other I/O error occurs

transferTo	back to summary
public long transferTo(FileChannel out) throws IOException

pack-priv final Class ChunksChannel

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail