org.voovan.tools.TUnsafe Maven / Gradle / Ivy
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package org.voovan.tools;
import sun.misc.Unsafe;
import java.lang.reflect.Field;
import java.util.concurrent.ConcurrentHashMap;
/**
* 类文字命名
*
* @author helyho
*
* Voovan Framework.
* WebSite: https://github.com/helyho/Voovan
* Licence: Apache v2 License
*/
public class TUnsafe {
private static Unsafe unsafe;
private static ConcurrentHashMap OFFSET_MAP = new ConcurrentHashMap();
static {
try {
Field field = Unsafe.class.getDeclaredField("theUnsafe");
field.setAccessible(true);
unsafe = (Unsafe) field.get(null);
} catch (Exception e) {
e.printStackTrace();
}
}
public static Unsafe getUnsafe() {
return unsafe;
}
public static Long getFieldOffset(Field field){
Long offset = OFFSET_MAP.get(field);
if(offset==null){
offset = unsafe.objectFieldOffset(field);
OFFSET_MAP.put(field, offset);
}
return offset;
}
public static T allocateInstance(Class clazz) throws InstantiationException {
return (T) TUnsafe.unsafe.allocateInstance(clazz);
}
public static void putObject(Object obj, Field field, Object value){
unsafe.putObject(obj, getFieldOffset(field), value);
}
public static void putByte(Object obj, Field field, byte value){
unsafe.putByte(obj, getFieldOffset(field), value);
}
public static void putIntger(Object obj, Field field, int value){
unsafe.putInt(obj, getFieldOffset(field), value);
}
public static void putShort(Object obj, Field field, short value){
unsafe.putShort(obj, getFieldOffset(field), value);
}
public static void putBoolean(Object obj, Field field, boolean value){
unsafe.putBoolean(obj, getFieldOffset(field), value);
}
public static void putLong(Object obj, Field field, long value){
unsafe.putLong(obj, getFieldOffset(field), value);
}
public static void putFloat(Object obj, Field field, float value){
unsafe.putFloat(obj, getFieldOffset(field), value);
}
public static void putDouble(Object obj, Field field, double value){
unsafe.putDouble(obj, getFieldOffset(field), value);
}
public static void putChar(Object obj, Field field, char value){
unsafe.putChar(obj, getFieldOffset(field), value);
}
public static T getObject(Object obj, Field field){
return (T)unsafe.getObject(obj, getFieldOffset(field));
}
public static byte getByte(Object obj, Field field){
return unsafe.getByte(obj, getFieldOffset(field));
}
public static int getIntger(Object obj, Field field){
return unsafe.getInt(obj, getFieldOffset(field));
}
public static short getShort(Object obj, Field field){
return unsafe.getShort(obj, getFieldOffset(field));
}
public static boolean getBoolean(Object obj, Field field){
return unsafe.getBoolean(obj, getFieldOffset(field));
}
public static long getLong(Object obj, Field field){
return unsafe.getLong(obj, getFieldOffset(field));
}
public static float getFloat(Object obj, Field field){
return unsafe.getFloat(obj, getFieldOffset(field));
}
public static double getDouble(Object obj, Field field){
return unsafe.getDouble(obj, getFieldOffset(field));
}
public static char getChar(Object obj, Field field){
return unsafe.getChar(obj, getFieldOffset(field));
}
}