/*
* Copyright 2011 the original author or authors.
*
* 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 org.gradle.cache.internal.cacheops;
public class CacheAccessOperationsStack {
private final ThreadLocal<CacheOperationStack> stackForThread = new ThreadLocal<CacheOperationStack>();
public void pushCacheAction() {
CacheOperationStack stack = getOrCreateStack();
stack.pushCacheAction();
}
public void popCacheAction() {
CacheOperationStack stack = stackForThread.get();
if (stack == null) {
throw new IllegalStateException("Operation stack is empty.");
}
stack.popCacheAction();
if (stack.isEmpty()) {
stackForThread.remove();
}
}
public boolean isInCacheAction() {
CacheOperationStack stack = stackForThread.get();
return stack != null && stack.isInCacheAction();
}
private CacheOperationStack getOrCreateStack() {
CacheOperationStack stack = stackForThread.get();
if (stack == null) {
stack = new CacheOperationStack();
stackForThread.set(stack);
}
return stack;
}
}