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author | Michael Koch <konqueror@gmx.de> | 2004-01-23 12:29:05 +0000 |
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committer | Michael Koch <mkoch@gcc.gnu.org> | 2004-01-23 12:29:05 +0000 |
commit | 8fac50e006cada9c19b2099bc39e8f2578bf42da (patch) | |
tree | 5753c333517b9c1597130269afde3b5a8152cf62 /libjava | |
parent | 58cc47894986d201a9f1a40710d903309be7d066 (diff) | |
download | gcc-8fac50e006cada9c19b2099bc39e8f2578bf42da.zip gcc-8fac50e006cada9c19b2099bc39e8f2578bf42da.tar.gz gcc-8fac50e006cada9c19b2099bc39e8f2578bf42da.tar.bz2 |
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.
From-SVN: r76411
Diffstat (limited to 'libjava')
-rw-r--r-- | libjava/ChangeLog | 7 | ||||
-rw-r--r-- | libjava/java/io/FileDescriptor.java | 57 |
2 files changed, 51 insertions, 13 deletions
diff --git a/libjava/ChangeLog b/libjava/ChangeLog index cdede41..fe374fd 100644 --- a/libjava/ChangeLog +++ b/libjava/ChangeLog @@ -1,5 +1,12 @@ 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: New file. diff --git a/libjava/java/io/FileDescriptor.java b/libjava/java/io/FileDescriptor.java index 52626e3..c7fd6ed 100644 --- a/libjava/java/io/FileDescriptor.java +++ b/libjava/java/io/FileDescriptor.java @@ -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; + + private long position = 0; - // This constructor is specified to create an invalid descriptor. - public FileDescriptor () + /** + * 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; } |