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2004-01-23 Michael Koch <konqueror@gmx.de>

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* java/io/FileDescriptor.java
	(in, out, err): Added javadoc.
	(static): Merged loading code.
	(fd, position): Moved around.

From-SVN: r76411
This commit is contained in:
Michael Koch 2004-01-23 12:29:05 +00:00 committed by Michael Koch
parent 58cc478949
commit 8fac50e006
2 changed files with 51 additions and 13 deletions
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7
libjava/ChangeLog
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@ -1,3 +1,10 @@
2004-01-23 Michael Koch <konqueror@gmx.de>
* java/io/FileDescriptor.java
(in, out, err): Added javadoc.
(static): Merged loading code.
(fd, position): Moved around.
2004-01-23 Michael Koch <konqueror@gmx.de>
* gnu/java/awt/doc-files/BitwiseXORComposite-1.png:

57
libjava/java/io/FileDescriptor.java
View File

@ -39,26 +39,51 @@ exception statement from your version. */
package java.io;
import gnu.classpath.Configuration;
/**
* This class represents an opaque file handle as a Java class. It should
* be used only to pass to other methods that expect an object of this
* type. No system specific information can be obtained from this object.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Tom Tromey (tromey@cygnus.com)
* @date September 24, 1998
*/
public final class FileDescriptor
{
/**
* A <code>FileDescriptor</code> representing the system standard input
* stream. This will usually be accessed through the
* <code>System.in</code>variable.
*/
public static final FileDescriptor in = null;
/**
* A <code>FileDescriptor</code> representing the system standard output
* stream. This will usually be accessed through the
* <code>System.out</code>variable.
*/
public static final FileDescriptor out = null;
/**
* A <code>FileDescriptor</code> representing the system standard error
* stream. This will usually be accessed through the
* <code>System.err</code>variable.
*/
public static final FileDescriptor err = null;
private static native void init();
static
{
init();
}
{
if (Configuration.INIT_LOAD_LIBRARY)
{
System.loadLibrary("javaio");
}
init();
}
public native void sync () throws SyncFailedException;
public native boolean valid ();
@ -77,9 +102,22 @@ public final class FileDescriptor
static final int SYNC = 16;
static final int DSYNC = 32;
/**
* This is the actual native file descriptor value
*/
// System's notion of file descriptor. It might seem redundant to
// initialize this given that it is reassigned in the constructors.
// However, this is necessary because if open() throws an exception
// we want to make sure this has the value -1. This is the most
// efficient way to accomplish that.
private int fd = -1;
// This constructor is specified to create an invalid descriptor.
public FileDescriptor ()
private long position = 0;
/**
* This method is used to initialize an invalid FileDescriptor object.
*/
public FileDescriptor()
{
}
@ -124,12 +162,5 @@ public final class FileDescriptor
fd = desc;
}
// System's notion of file descriptor. It might seem redundant to
// initialize this given that it is reassigned in the constructors.
// However, this is necessary because if open() throws an exception
// we want to make sure this has the value -1. This is the most
// efficient way to accomplish that.
private int fd = -1;
private long position = 0;
}