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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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 com.intellij.openapi.util;
import com.intellij.Patches;
import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
/**
* Created by Max Medvedev on 28/03/14
*/
public class SimpleModificationTracker implements ModificationTracker {
static {
// field made public to workaround bug in JDK7 when AtomicIntegerFieldUpdater can't be created for private field, even from within its own class
// fixed in JDK8
assert Patches.JDK_BUG_ID_7103570;
}
public volatile int myCounter;
@Override
public long getModificationCount() {
return myCounter;
}
private static final AtomicIntegerFieldUpdater<SimpleModificationTracker> UPDATER = AtomicIntegerFieldUpdater.newUpdater(SimpleModificationTracker.class, "myCounter");
public void incModificationCount() {
UPDATER.incrementAndGet(this);
}
}
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