79 lines
2.3 KiB
Java
79 lines
2.3 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2018.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.fml;
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import sun.misc.Unsafe;
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import java.lang.reflect.Field;
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public class UnsafeHacks
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{
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private static final Unsafe UNSAFE;
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static {
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try
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{
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final Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
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theUnsafe.setAccessible(true);
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UNSAFE = (Unsafe)theUnsafe.get(null);
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}
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catch (IllegalAccessException | NoSuchFieldException e)
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{
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throw new RuntimeException("BARF!", e);
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}
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}
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@SuppressWarnings("unchecked")
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public static <T> T newInstance(Class<T> packetClass)
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{
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try
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{
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return (T) UNSAFE.allocateInstance(packetClass);
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}
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catch (InstantiationException e)
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{
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throw new RuntimeException(e);
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}
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}
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@SuppressWarnings("unchecked")
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public static <T> T getField(Field field, Object object) {
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final long l = UNSAFE.objectFieldOffset(field);
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return (T) UNSAFE.getObject(object, l);
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}
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public static void setField(Field data, Object object, Object buffer)
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{
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long offset = UNSAFE.objectFieldOffset(data);
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UNSAFE.putObject(object, offset, buffer);
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}
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public static int getIntField(Field f, Object obj)
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{
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long offset = UNSAFE.objectFieldOffset(f);
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return UNSAFE.getInt(obj, offset);
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}
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public static void setIntField(Field data, Object object, int value)
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{
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long offset = UNSAFE.objectFieldOffset(data);
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UNSAFE.putInt(object, offset, value);
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}
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}
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