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/*
* Copyright (c) 2019, 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 jdk.nio.mapmode;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.FileChannel.MapMode;
/**
* JDK-specific map modes.
*
* @since 14
* @see java.nio.channels.FileChannel#map
*/
public class ExtendedMapMode {
private ExtendedMapMode() { }
/**
* File mapping mode for a read-only mapping of a file backed by
* non-volatile RAM.
*
* <p> The {@linkplain FileChannel#map map} method throws
* {@linkplain UnsupportedOperationException} when this map mode
* is used on an implementation that does not support it.
*
* @implNote On Linux, the {@code MAP_SYNC} and {@code
* MAP_SHARED_VALIDATE} flags are specified to {@code mmap} when
* mapping the file into memory.
*/
public static final MapMode READ_ONLY_SYNC = jdk.internal.misc.ExtendedMapMode.READ_ONLY_SYNC;
/**
* File mapping mode for a read-write mapping of a file backed by
* non-volatile RAM. {@linkplain MappedByteBuffer#force force}
* operations on a buffer created with this mode will be performed
* using cache line writeback rather than proceeding via a file
* device flush.
*
* <p> The {@linkplain FileChannel#map map} method throws
* {@linkplain UnsupportedOperationException} when this map mode
* is used on an implementation that does not support it.
*
* @implNote On Linux, the {@code MAP_SYNC} and {@code
* MAP_SHARED_VALIDATE} flags are specified to {@code mmap} when
* mapping the file into memory.
*/
public static final MapMode READ_WRITE_SYNC = jdk.internal.misc.ExtendedMapMode.READ_WRITE_SYNC;
}
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