io.protostuff.runtime.UnsafeAccessor Maven / Gradle / Ivy
//========================================================================
//Copyright 2016 David Yu
//------------------------------------------------------------------------
//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 io.protostuff.runtime;
import static io.protostuff.runtime.RuntimeUnsafeFieldFactory.us;
/**
* Read/write from/to fields using sun.misc.Unsafe
*
* @author David Yu
* @created Oct 11, 2016
*/
public final class UnsafeAccessor extends Accessor
{
static final Accessor.Factory FACTORY = new Factory()
{
public Accessor create(java.lang.reflect.Field f)
{
return new UnsafeAccessor(f);
}
};
public final long offset;
public UnsafeAccessor(java.lang.reflect.Field f)
{
super(f);
offset = us.objectFieldOffset(f);
}
@Override
public void set(Object owner, Object value)
{
us.putObject(owner, offset, value);
}
@SuppressWarnings("unchecked")
@Override
public T get(Object owner)
{
return (T)us.getObject(owner, offset);
}
}