diff options
author | jfrijters <jfrijters> | 2011-08-18 15:30:53 +0400 |
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committer | jfrijters <jfrijters> | 2011-08-18 15:30:53 +0400 |
commit | 049db0ce5b02f51e5bfe13aeb5873cf67163a2c4 (patch) | |
tree | 72b2c5fea5f7cd325bff6afb1d8abdd8d321a4c6 /openjdk/sun/nio/ch/FileDispatcherImpl.java | |
parent | 2ea8c376c4c0584f7cad9f5c4f441503714f9eb3 (diff) |
Prepare for forking.
Diffstat (limited to 'openjdk/sun/nio/ch/FileDispatcherImpl.java')
-rw-r--r-- | openjdk/sun/nio/ch/FileDispatcherImpl.java | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/openjdk/sun/nio/ch/FileDispatcherImpl.java b/openjdk/sun/nio/ch/FileDispatcherImpl.java new file mode 100644 index 00000000..276c6199 --- /dev/null +++ b/openjdk/sun/nio/ch/FileDispatcherImpl.java @@ -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; +} |