diff options
Diffstat (limited to 'libjava/java/nio/channels/FileChannelImpl.java')
| -rw-r--r-- | libjava/java/nio/channels/FileChannelImpl.java | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/libjava/java/nio/channels/FileChannelImpl.java b/libjava/java/nio/channels/FileChannelImpl.java index 89ac11ad514..ea2526e7002 100644 --- a/libjava/java/nio/channels/FileChannelImpl.java +++ b/libjava/java/nio/channels/FileChannelImpl.java @@ -38,6 +38,9 @@ exception statement from your version. */ package java.nio.channels; +import gnu.classpath.Configuration; +import gnu.gcj.RawData; +import gnu.java.nio.FileLockImpl; import java.io.EOFException; import java.io.FileDescriptor; import java.io.FileInputStream; @@ -47,8 +50,6 @@ import java.io.RandomAccessFile; import java.nio.ByteBuffer; import java.nio.MappedByteBuffer; import java.nio.MappedByteBufferImpl; -import gnu.classpath.Configuration; -import gnu.gcj.RawData; /** * This file is not user visible ! @@ -354,8 +355,22 @@ public class FileChannelImpl extends FileChannel file_obj instanceof FileInputStream) throw new NonWritableChannelException (); - throw new Error ("Not implemented"); + boolean completed = false; + + try + { + begin(); + lockImpl(position, size, shared); + completed = true; + return new FileLockImpl(fd, this, position, size, shared); + } + finally + { + end(completed); + } } + + private native void lockImpl(long position, long size, boolean shared); public FileLock tryLock (long position, long size, boolean shared) throws IOException @@ -367,9 +382,27 @@ public class FileChannelImpl extends FileChannel if (!isOpen ()) throw new ClosedChannelException (); - throw new Error ("Not implemented"); + if (! tryLockImpl(position, size, shared)) + return null; + + boolean completed = false; + + try + { + boolean lockable = tryLockImpl(position, size, shared); + completed = true; + return (lockable + ? new FileLockImpl(fd, this, position, size, shared) + : null); + } + finally + { + end(completed); + } } + private native boolean tryLockImpl(long position, long size, boolean shared); + public long position () throws IOException { |