src/main/decaf/util/concurrent/atomic/AtomicBoolean.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

#ifndef _DECAF_UTIL_CONCURRENT_ATOMIC_ATOMICBOOLEAN_H_
#define _DECAF_UTIL_CONCURRENT_ATOMIC_ATOMICBOOLEAN_H_

#include <string>
#include <decaf/util/Config.h>

namespace decaf {
namespace util {
namespace concurrent {
namespace atomic {

    class DECAF_API AtomicBoolean {
    private:

        volatile unsigned int value;

    public:

        AtomicBoolean();

        AtomicBoolean( bool initialValue );

        virtual ~AtomicBoolean() {}

        bool get() const {
            return value == 0 ? false : true;
        }

        void set( bool newValue ) {
            this->value = newValue ? 1 : 0;
        }

        bool compareAndSet( bool expect, bool update );

        bool getAndSet( bool newValue );

        std::string toString() const;

    };

}}}}

#endif /*_DECAF_UTIL_CONCURRENT_ATOMIC_ATOMICBOOLEAN_H_*/