jdk.nio.channels.ScatteringByteChannel
A channel that can read bytes into a sequence of buffers.
A scattering read operation reads, in a single invocation, a sequence of bytes into one or more of a given sequence of buffers. Scattering reads are often useful when implementing network protocols or file formats that, for example, group data into segments consisting of one or more fixed-length headers followed by a variable-length body. Similar gathering write operations are defined in the GatheringByteChannel interface.
A channel that can read bytes into a sequence of buffers. A scattering read operation reads, in a single invocation, a sequence of bytes into one or more of a given sequence of buffers. Scattering reads are often useful when implementing network protocols or file formats that, for example, group data into segments consisting of one or more fixed-length headers followed by a variable-length body. Similar gathering write operations are defined in the GatheringByteChannel interface.
readclj
(read this dsts)(read this dsts offset length)Reads a sequence of bytes from this channel into a subsequence of the given buffers.
An invocation of this method attempts to read up to r bytes from this channel, where r is the total number of bytes remaining the specified subsequence of the given buffer array, that is,
dsts[offset].remaining() dsts[offset+1].remaining() ... dsts[offset+length-1].remaining()
at the moment that this method is invoked.
Suppose that a byte sequence of length n is read, where 0 <= n <= r. Up to the first dsts[offset].remaining() bytes of this sequence are transferred into buffer dsts[offset], up to the next dsts[offset+1].remaining() bytes are transferred into buffer dsts[offset+1], and so forth, until the entire byte sequence is transferred into the given buffers. As many bytes as possible are transferred into each buffer, hence the final position of each updated buffer, except the last updated buffer, is guaranteed to be equal to that buffer's limit.
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.
dsts - The buffers into which bytes are to be transferred - java.nio.ByteBuffer[]
offset - The offset within the buffer array of the first buffer into which bytes are to be transferred; must be non-negative and no larger than dsts.length - int
length - The maximum number of buffers to be accessed; must be non-negative and no larger than dsts.length - offset - int
returns: The number of bytes read, possibly zero,
or -1 if the channel has reached end-of-stream - long
throws: java.lang.IndexOutOfBoundsException - If the preconditions on the offset and length parameters do not hold
Reads a sequence of bytes from this channel into a subsequence of the
given buffers.
An invocation of this method attempts to read up to r bytes
from this channel, where r is the total number of bytes remaining
the specified subsequence of the given buffer array, that is,
dsts[offset].remaining()
dsts[offset+1].remaining()
... dsts[offset+length-1].remaining()
at the moment that this method is invoked.
Suppose that a byte sequence of length n is read, where
0 <= n <= r.
Up to the first dsts[offset].remaining() bytes of this sequence
are transferred into buffer dsts[offset], up to the next
dsts[offset+1].remaining() bytes are transferred into buffer
dsts[offset+1], and so forth, until the entire byte sequence
is transferred into the given buffers. As many bytes as possible are
transferred into each buffer, hence the final position of each updated
buffer, except the last updated buffer, is guaranteed to be equal to
that buffer's limit.
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.
dsts - The buffers into which bytes are to be transferred - `java.nio.ByteBuffer[]`
offset - The offset within the buffer array of the first buffer into which bytes are to be transferred; must be non-negative and no larger than dsts.length - `int`
length - The maximum number of buffers to be accessed; must be non-negative and no larger than dsts.length - offset - `int`
returns: The number of bytes read, possibly zero,
or -1 if the channel has reached end-of-stream - `long`
throws: java.lang.IndexOutOfBoundsException - If the preconditions on the offset and length parameters do not holdcljdoc is a website building & hosting documentation for Clojure/Script libraries
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