-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathWritableByteChannel.java
More file actions
105 lines (98 loc) · 3.36 KB
/
WritableByteChannel.java
File metadata and controls
105 lines (98 loc) · 3.36 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
/*
* Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
package java.nio.channels;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* A channel that can write bytes.
*
* <p> Only one write operation upon a writable channel may be in progress at
* any given time. If one thread initiates a write operation upon a channel
* then any other thread that attempts to initiate another write operation will
* block until the first operation is complete. Whether or not other kinds of
* I/O operations may proceed concurrently with a write operation depends upon
* the type of the channel. </p>
*
*
* @author Mark Reinhold
* @author JSR-51 Expert Group
* @since 1.4
*/
public interface WritableByteChannel
extends Channel
{
/**
* Writes a sequence of bytes to this channel from the given buffer.
*
* <p> An attempt is made to write up to <i>r</i> bytes to the channel,
* where <i>r</i> is the number of bytes remaining in the buffer, that is,
* <tt>src.remaining()</tt>, at the moment this method is invoked.
*
* <p> Suppose that a byte sequence of length <i>n</i> is written, where
* <tt>0</tt> <tt><=</tt> <i>n</i> <tt><=</tt> <i>r</i>.
* This byte sequence will be transferred from the buffer starting at index
* <i>p</i>, where <i>p</i> is the buffer's position at the moment this
* method is invoked; the index of the last byte written will be
* <i>p</i> <tt>+</tt> <i>n</i> <tt>-</tt> <tt>1</tt>.
* Upon return the buffer's position will be equal to
* <i>p</i> <tt>+</tt> <i>n</i>; its limit will not have changed.
*
* <p> Unless otherwise specified, a write operation will return only after
* writing all of the <i>r</i> requested bytes. Some types of channels,
* depending upon their state, may write only some of the bytes or possibly
* none at all. A socket channel in non-blocking mode, for example, cannot
* write any more bytes than are free in the socket's output buffer.
*
* <p> This method may be invoked at any time. If another thread has
* already initiated a write operation upon this channel, however, then an
* invocation of this method will block until the first operation is
* complete. </p>
*
* @param src
* The buffer from which bytes are to be retrieved
*
* @return The number of bytes written, possibly zero
*
* @throws NonWritableChannelException
* If this channel was not opened for writing
*
* @throws ClosedChannelException
* If this channel is closed
*
* @throws AsynchronousCloseException
* If another thread closes this channel
* while the write operation is in progress
*
* @throws ClosedByInterruptException
* If another thread interrupts the current thread
* while the write operation is in progress, thereby
* closing the channel and setting the current thread's
* interrupt status
*
* @throws IOException
* If some other I/O error occurs
*/
public int write(ByteBuffer src) throws IOException;
}