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/*
 * Copyright 2016 Carlos Ballesteros Velasco
 *
 * Licensed under the Apache License, Version 2.0 (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
 *
 * 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 sun.misc;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

public final class Unsafe {
    public static final int INVALID_FIELD_OFFSET = -1;
    public static final int ARRAY_BOOLEAN_BASE_OFFSET = 0;
    public static final int ARRAY_BYTE_BASE_OFFSET = 0;
    public static final int ARRAY_SHORT_BASE_OFFSET = 0;
    public static final int ARRAY_CHAR_BASE_OFFSET = 0;
    public static final int ARRAY_INT_BASE_OFFSET = 0;
    public static final int ARRAY_LONG_BASE_OFFSET = 0;
    public static final int ARRAY_FLOAT_BASE_OFFSET = 0;
    public static final int ARRAY_DOUBLE_BASE_OFFSET = 0;
    public static final int ARRAY_OBJECT_BASE_OFFSET = 0;
    public static final int ARRAY_BOOLEAN_INDEX_SCALE = 0;
    public static final int ARRAY_BYTE_INDEX_SCALE = 0;
    public static final int ARRAY_SHORT_INDEX_SCALE = 0;
    public static final int ARRAY_CHAR_INDEX_SCALE = 0;
    public static final int ARRAY_INT_INDEX_SCALE = 0;
    public static final int ARRAY_LONG_INDEX_SCALE = 0;
    public static final int ARRAY_FLOAT_INDEX_SCALE = 0;
    public static final int ARRAY_DOUBLE_INDEX_SCALE = 0;
    public static final int ARRAY_OBJECT_INDEX_SCALE = 0;
    public static final int ADDRESS_SIZE = 0;

    private Unsafe() {
    }

    private static Unsafe theUnsafe;

    public static Unsafe getUnsafe() {
        if (theUnsafe == null) theUnsafe = new Unsafe();
        return theUnsafe;
    }

    public native int getInt(Object var1, long var2);

    public native void putInt(Object var1, long var2, int var4);

    public native Object getObject(Object var1, long var2);

    public native void putObject(Object var1, long var2, Object var4);

    public native boolean getBoolean(Object var1, long var2);

    public native void putBoolean(Object var1, long var2, boolean var4);

    public native byte getByte(Object var1, long var2);

    public native void putByte(Object var1, long var2, byte var4);

    public native short getShort(Object var1, long var2);

    public native void putShort(Object var1, long var2, short var4);

    public native char getChar(Object var1, long var2);

    public native void putChar(Object var1, long var2, char var4);

    public native long getLong(Object var1, long var2);

    public native void putLong(Object var1, long var2, long var4);

    public native float getFloat(Object var1, long var2);

    public native void putFloat(Object var1, long var2, float var4);

    public native double getDouble(Object var1, long var2);

    public native void putDouble(Object var1, long var2, double var4);

    native public int getInt(Object var1, int var2);

    native public void putInt(Object var1, int var2, int var3);

    native public Object getObject(Object var1, int var2);

    native public void putObject(Object var1, int var2, Object var3);

    native public boolean getBoolean(Object var1, int var2);

    native public void putBoolean(Object var1, int var2, boolean var3);

    native public byte getByte(Object var1, int var2);

    native public void putByte(Object var1, int var2, byte var3);

    native public short getShort(Object var1, int var2);

    native public void putShort(Object var1, int var2, short var3);

    native public char getChar(Object var1, int var2);

    native public void putChar(Object var1, int var2, char var3);

    native public long getLong(Object var1, int var2);

    native public void putLong(Object var1, int var2, long var3);

    native public float getFloat(Object var1, int var2);

    native public void putFloat(Object var1, int var2, float var3);

    native public double getDouble(Object var1, int var2);

    native public void putDouble(Object var1, int var2, double var3);

    public native byte getByte(long var1);

    public native void putByte(long var1, byte var3);

    public native short getShort(long var1);

    public native void putShort(long var1, short var3);

    public native char getChar(long var1);

    public native void putChar(long var1, char var3);

    public native int getInt(long var1);

    public native void putInt(long var1, int var3);

    public native long getLong(long var1);

    public native void putLong(long var1, long var3);

    public native float getFloat(long var1);

    public native void putFloat(long var1, float var3);

    public native double getDouble(long var1);

    public native void putDouble(long var1, double var3);

    public native long getAddress(long var1);

    public native void putAddress(long var1, long var3);

    public native long allocateMemory(long var1);

    public native long reallocateMemory(long var1, long var3);

    public native void setMemory(Object var1, long var2, long var4, byte var6);

    native public void setMemory(long var1, long var3, byte var5);

    public native void copyMemory(Object var1, long var2, Object var4, long var5, long var7);

    native public void copyMemory(long var1, long var3, long var5);

    public native void freeMemory(long var1);

    native public int fieldOffset(Field var1);

    native public Object staticFieldBase(Class var1);

    public native long staticFieldOffset(Field var1);

    public native long objectFieldOffset(Field var1);

    public native Object staticFieldBase(Field var1);

    public native boolean shouldBeInitialized(Class var1);

    public native void ensureClassInitialized(Class var1);

    public native int arrayBaseOffset(Class var1);

    public native int arrayIndexScale(Class var1);

    public native int addressSize();

    public native int pageSize();

    //public native Class defineClass(String var1, byte[] var2, int var3, int var4, ClassLoader var5, ProtectionDomain var6);

    public native Class defineAnonymousClass(Class var1, byte[] var2, Object[] var3);

    public native Object allocateInstance(Class var1) throws InstantiationException;

    public native void monitorEnter(Object var1);

    public native void monitorExit(Object var1);

    public native boolean tryMonitorEnter(Object var1);

    public native void throwException(Throwable var1);

    public final native boolean compareAndSwapObject(Object var1, long var2, Object var4, Object var5);

    public final native boolean compareAndSwapInt(Object var1, long var2, int var4, int var5);

    public final native boolean compareAndSwapLong(Object var1, long var2, long var4, long var6);

    public native Object getObjectVolatile(Object var1, long var2);

    public native void putObjectVolatile(Object var1, long var2, Object var4);

    public native int getIntVolatile(Object var1, long var2);

    public native void putIntVolatile(Object var1, long var2, int var4);

    public native boolean getBooleanVolatile(Object var1, long var2);

    public native void putBooleanVolatile(Object var1, long var2, boolean var4);

    public native byte getByteVolatile(Object var1, long var2);

    public native void putByteVolatile(Object var1, long var2, byte var4);

    public native short getShortVolatile(Object var1, long var2);

    public native void putShortVolatile(Object var1, long var2, short var4);

    public native char getCharVolatile(Object var1, long var2);

    public native void putCharVolatile(Object var1, long var2, char var4);

    public native long getLongVolatile(Object var1, long var2);

    public native void putLongVolatile(Object var1, long var2, long var4);

    public native float getFloatVolatile(Object var1, long var2);

    public native void putFloatVolatile(Object var1, long var2, float var4);

    public native double getDoubleVolatile(Object var1, long var2);

    public native void putDoubleVolatile(Object var1, long var2, double var4);

    public native void putOrderedObject(Object var1, long var2, Object var4);

    public native void putOrderedInt(Object var1, long var2, int var4);

    public native void putOrderedLong(Object var1, long var2, long var4);

    public native void unpark(Object var1);

    public native void park(boolean var1, long var2);

    public native int getLoadAverage(double[] var1, int var2);

    native public final int getAndAddInt(Object var1, long var2, int var4);

    native public final long getAndAddLong(Object var1, long var2, long var4);

    native public final int getAndSetInt(Object var1, long var2, int var4);

    native public final long getAndSetLong(Object var1, long var2, long var4);

    native public final Object getAndSetObject(Object var1, long var2, Object var4);

    public native void loadFence();

    public native void storeFence();

    public native void fullFence();

    //static {
    //    theUnsafe = new Unsafe();
    //    ARRAY_BOOLEAN_BASE_OFFSET = theUnsafe.arrayBaseOffset(boolean[].class);
    //    ARRAY_BYTE_BASE_OFFSET = theUnsafe.arrayBaseOffset(byte[].class);
    //    ARRAY_SHORT_BASE_OFFSET = theUnsafe.arrayBaseOffset(short[].class);
    //    ARRAY_CHAR_BASE_OFFSET = theUnsafe.arrayBaseOffset(char[].class);
    //    ARRAY_INT_BASE_OFFSET = theUnsafe.arrayBaseOffset(int[].class);
    //    ARRAY_LONG_BASE_OFFSET = theUnsafe.arrayBaseOffset(long[].class);
    //    ARRAY_FLOAT_BASE_OFFSET = theUnsafe.arrayBaseOffset(float[].class);
    //    ARRAY_DOUBLE_BASE_OFFSET = theUnsafe.arrayBaseOffset(double[].class);
    //    ARRAY_OBJECT_BASE_OFFSET = theUnsafe.arrayBaseOffset(Object[].class);
    //    ARRAY_BOOLEAN_INDEX_SCALE = theUnsafe.arrayIndexScale(boolean[].class);
    //    ARRAY_BYTE_INDEX_SCALE = theUnsafe.arrayIndexScale(byte[].class);
    //    ARRAY_SHORT_INDEX_SCALE = theUnsafe.arrayIndexScale(short[].class);
    //    ARRAY_CHAR_INDEX_SCALE = theUnsafe.arrayIndexScale(char[].class);
    //    ARRAY_INT_INDEX_SCALE = theUnsafe.arrayIndexScale(int[].class);
    //    ARRAY_LONG_INDEX_SCALE = theUnsafe.arrayIndexScale(long[].class);
    //    ARRAY_FLOAT_INDEX_SCALE = theUnsafe.arrayIndexScale(float[].class);
    //    ARRAY_DOUBLE_INDEX_SCALE = theUnsafe.arrayIndexScale(double[].class);
    //    ARRAY_OBJECT_INDEX_SCALE = theUnsafe.arrayIndexScale(Object[].class);
    //    ADDRESS_SIZE = theUnsafe.addressSize();
    //}
}