зеркало из https://github.com/mono/ikvm-fork.git
Prepare for forking.
This commit is contained in:
Родитель
2ea8c376c4
Коммит
049db0ce5b
|
@ -0,0 +1,161 @@
|
|||
/*
|
||||
* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation. Oracle designates this
|
||||
* particular file as subject to the "Classpath" exception as provided
|
||||
* by Oracle in the LICENSE file that accompanied this code.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
||||
* or visit www.oracle.com if you need additional information or have any
|
||||
* questions.
|
||||
*/
|
||||
|
||||
package sun.nio.ch;
|
||||
|
||||
import java.io.*;
|
||||
import sun.misc.SharedSecrets;
|
||||
import sun.misc.JavaIOFileDescriptorAccess;
|
||||
|
||||
class FileDispatcherImpl extends FileDispatcher
|
||||
{
|
||||
static {
|
||||
Util.load();
|
||||
}
|
||||
|
||||
/**
|
||||
* Indicates if the dispatcher should first advance the file position
|
||||
* to the end of file when writing.
|
||||
*/
|
||||
private final boolean append;
|
||||
|
||||
FileDispatcherImpl(boolean append) {
|
||||
this.append = append;
|
||||
}
|
||||
|
||||
FileDispatcherImpl() {
|
||||
this(false);
|
||||
}
|
||||
|
||||
int read(FileDescriptor fd, long address, int len)
|
||||
throws IOException
|
||||
{
|
||||
return read0(fd, address, len);
|
||||
}
|
||||
|
||||
int pread(FileDescriptor fd, long address, int len,
|
||||
long position, Object lock) throws IOException
|
||||
{
|
||||
synchronized(lock) {
|
||||
return pread0(fd, address, len, position);
|
||||
}
|
||||
}
|
||||
|
||||
long readv(FileDescriptor fd, long address, int len) throws IOException {
|
||||
return readv0(fd, address, len);
|
||||
}
|
||||
|
||||
int write(FileDescriptor fd, long address, int len) throws IOException {
|
||||
return write0(fd, address, len, append);
|
||||
}
|
||||
|
||||
int pwrite(FileDescriptor fd, long address, int len,
|
||||
long position, Object lock) throws IOException
|
||||
{
|
||||
synchronized(lock) {
|
||||
return pwrite0(fd, address, len, position);
|
||||
}
|
||||
}
|
||||
|
||||
long writev(FileDescriptor fd, long address, int len) throws IOException {
|
||||
return writev0(fd, address, len, append);
|
||||
}
|
||||
|
||||
int force(FileDescriptor fd, boolean metaData) throws IOException {
|
||||
return force0(fd, metaData);
|
||||
}
|
||||
|
||||
int truncate(FileDescriptor fd, long size) throws IOException {
|
||||
return truncate0(fd, size);
|
||||
}
|
||||
|
||||
long size(FileDescriptor fd) throws IOException {
|
||||
return size0(fd);
|
||||
}
|
||||
|
||||
int lock(FileDescriptor fd, boolean blocking, long pos, long size,
|
||||
boolean shared) throws IOException
|
||||
{
|
||||
return lock0(fd, blocking, pos, size, shared);
|
||||
}
|
||||
|
||||
void release(FileDescriptor fd, long pos, long size) throws IOException {
|
||||
release0(fd, pos, size);
|
||||
}
|
||||
|
||||
void close(FileDescriptor fd) throws IOException {
|
||||
close0(fd);
|
||||
}
|
||||
|
||||
FileDescriptor duplicateForMapping(FileDescriptor fd) throws IOException {
|
||||
// on Windows we need to keep a handle to the file
|
||||
JavaIOFileDescriptorAccess fdAccess =
|
||||
SharedSecrets.getJavaIOFileDescriptorAccess();
|
||||
FileDescriptor result = new FileDescriptor();
|
||||
long handle = duplicateHandle(fdAccess.getHandle(fd));
|
||||
fdAccess.setHandle(result, handle);
|
||||
return result;
|
||||
}
|
||||
|
||||
//-- Native methods
|
||||
|
||||
static native int read0(FileDescriptor fd, long address, int len)
|
||||
throws IOException;
|
||||
|
||||
static native int pread0(FileDescriptor fd, long address, int len,
|
||||
long position) throws IOException;
|
||||
|
||||
static native long readv0(FileDescriptor fd, long address, int len)
|
||||
throws IOException;
|
||||
|
||||
static native int write0(FileDescriptor fd, long address, int len, boolean append)
|
||||
throws IOException;
|
||||
|
||||
static native int pwrite0(FileDescriptor fd, long address, int len,
|
||||
long position) throws IOException;
|
||||
|
||||
static native long writev0(FileDescriptor fd, long address, int len, boolean append)
|
||||
throws IOException;
|
||||
|
||||
static native int force0(FileDescriptor fd, boolean metaData)
|
||||
throws IOException;
|
||||
|
||||
static native int truncate0(FileDescriptor fd, long size)
|
||||
throws IOException;
|
||||
|
||||
static native long size0(FileDescriptor fd) throws IOException;
|
||||
|
||||
static native int lock0(FileDescriptor fd, boolean blocking, long pos,
|
||||
long size, boolean shared) throws IOException;
|
||||
|
||||
static native void release0(FileDescriptor fd, long pos, long size)
|
||||
throws IOException;
|
||||
|
||||
static native void close0(FileDescriptor fd) throws IOException;
|
||||
|
||||
static native void closeByHandle(long fd) throws IOException;
|
||||
|
||||
static native long duplicateHandle(long fd) throws IOException;
|
||||
}
|
|
@ -0,0 +1,72 @@
|
|||
/*
|
||||
* Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved.
|
||||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation. Oracle designates this
|
||||
* particular file as subject to the "Classpath" exception as provided
|
||||
* by Oracle in the LICENSE file that accompanied this code.
|
||||
*
|
||||
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* version 2 for more details (a copy is included in the LICENSE file that
|
||||
* accompanied this code).
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License version
|
||||
* 2 along with this work; if not, write to the Free Software Foundation,
|
||||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
||||
* or visit www.oracle.com if you need additional information or have any
|
||||
* questions.
|
||||
*/
|
||||
|
||||
package sun.nio.ch;
|
||||
|
||||
import java.io.*;
|
||||
|
||||
/**
|
||||
* Allows different platforms to call different native methods
|
||||
* for read and write operations.
|
||||
*/
|
||||
|
||||
abstract class NativeDispatcher
|
||||
{
|
||||
|
||||
abstract int read(FileDescriptor fd, long address, int len)
|
||||
throws IOException;
|
||||
|
||||
int pread(FileDescriptor fd, long address, int len,
|
||||
long position, Object lock) throws IOException
|
||||
{
|
||||
throw new IOException("Operation Unsupported");
|
||||
}
|
||||
|
||||
abstract long readv(FileDescriptor fd, long address, int len)
|
||||
throws IOException;
|
||||
|
||||
abstract int write(FileDescriptor fd, long address, int len)
|
||||
throws IOException;
|
||||
|
||||
int pwrite(FileDescriptor fd, long address, int len,
|
||||
long position, Object lock) throws IOException
|
||||
{
|
||||
throw new IOException("Operation Unsupported");
|
||||
}
|
||||
|
||||
abstract long writev(FileDescriptor fd, long address, int len)
|
||||
throws IOException;
|
||||
|
||||
abstract void close(FileDescriptor fd) throws IOException;
|
||||
|
||||
// Prepare the given fd for closing by duping it to a known internal fd
|
||||
// that's already closed. This is necessary on some operating systems
|
||||
// (Solaris and Linux) to prevent fd recycling.
|
||||
//
|
||||
void preClose(FileDescriptor fd) throws IOException {
|
||||
// Do nothing by default; this is only needed on Unix
|
||||
}
|
||||
|
||||
}
|
Загрузка…
Ссылка в новой задаче