/*
* Copyright (C) 2016 Samuel Audet
*
* Licensed either under the Apache License, Version 2.0, or (at your option)
* under the terms of the GNU General Public License as published by
* the Free Software Foundation (subject to the "Classpath" exception),
* either version 2, or any later version (collectively, the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
* http://www.gnu.org/licenses/
* http://www.gnu.org/software/classpath/license.html
*
* or as provided in the LICENSE.txt file that accompanied this code.
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.bytedeco.javacpp.indexer;
import java.lang.reflect.Field;
import sun.misc.Unsafe;
/**
* The raw memory interface based on {@link Unsafe}.
*
* @author Samuel Audet
*/
class UnsafeRaw extends Raw {
protected static final Unsafe UNSAFE;
static {
Unsafe o;
try {
Class c = Class.forName("sun.misc.Unsafe");
Field f = c.getDeclaredField("theUnsafe");
c.getDeclaredMethod("getByte", long.class);
c.getDeclaredMethod("getShort", long.class);
c.getDeclaredMethod("getInt", long.class);
c.getDeclaredMethod("getLong", long.class);
c.getDeclaredMethod("getFloat", long.class);
c.getDeclaredMethod("getDouble", long.class);
c.getDeclaredMethod("getChar", long.class);
f.setAccessible(true);
o = (Unsafe)f.get(null);
} catch (ClassNotFoundException | IllegalArgumentException | IllegalAccessException
| NoSuchFieldException | NoSuchMethodException | SecurityException ex) {
o = null;
}
UNSAFE = o;
}
static boolean isAvailable() { return UNSAFE != null; }
@Override byte getByte(long address) { return UNSAFE.getByte(address); }
@Override void putByte(long address, byte b) { UNSAFE.putByte(address, b); }
@Override short getShort(long address) { return UNSAFE.getShort(address); }
@Override void putShort(long address, short s) { UNSAFE.putShort(address, s); }
@Override int getInt(long address) { return UNSAFE.getInt(address); }
@Override void putInt(long address, int i) { UNSAFE.putInt(address, i); }
@Override long getLong(long address) { return UNSAFE.getLong(address); }
@Override void putLong(long address, long l) { UNSAFE.putLong(address, l); }
@Override float getFloat(long address) { return UNSAFE.getFloat(address); }
@Override void putFloat(long address, float f) { UNSAFE.putFloat(address, f); }
@Override double getDouble(long address) { return UNSAFE.getDouble(address); }
@Override void putDouble(long address, double d) { UNSAFE.putDouble(address, d); }
@Override char getChar(long address) { return UNSAFE.getChar(address); }
@Override void putChar(long address, char c) { UNSAFE.putChar(address, c); }
}