ReentrantReadWriteLock.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.
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#ifndef _DECAF_UTIL_CONCURRENT_LOCKS_REENTRANTREADWRITELOCK_H_
#define _DECAF_UTIL_CONCURRENT_LOCKS_REENTRANTREADWRITELOCK_H_

#include <decaf/util/Config.h>

#include <decaf/lang/Thread.h>
#include <decaf/util/Collection.h>
#include <decaf/util/concurrent/locks/ReadWriteLock.h>

namespace decaf {
namespace util {
namespace concurrent {
namespace locks {

    class ReentrantReadWriteLockImpl;

    class DECAF_API ReentrantReadWriteLock : public ReadWriteLock {
    private:

        ReentrantReadWriteLockImpl* impl;

    private:

        ReentrantReadWriteLock(const ReentrantReadWriteLock&);
        ReentrantReadWriteLock& operator=(const ReentrantReadWriteLock&);

    public:

        ReentrantReadWriteLock();

        ReentrantReadWriteLock(bool fair);

        virtual ~ReentrantReadWriteLock();

    public:

        virtual decaf::util::concurrent::locks::Lock& readLock();

        virtual decaf::util::concurrent::locks::Lock& writeLock();

        bool isFair() const;

        int getReadLockCount() const;

        bool isWriteLocked() const;

        bool isWriteLockedByCurrentThread() const;

        int getWriteHoldCount() const;

        int getReadHoldCount() const;

        bool hasWaiters(Condition* condition) const;

        int getWaitQueueLength(Condition* condition) const;

        std::string toString() const;

        bool hasQueuedThreads() const;

        bool hasQueuedThread(decaf::lang::Thread* thread) const;

        int getQueueLength() const;

    protected:

        decaf::util::Collection<decaf::lang::Thread*>* getWaitingThreads(Condition* condition) const;

        decaf::util::Collection<decaf::lang::Thread*>* getQueuedThreads() const;

        decaf::util::Collection<decaf::lang::Thread*>* getQueuedWriterThreads() const;

        decaf::util::Collection<decaf::lang::Thread*>* getQueuedReaderThreads() const;

        decaf::lang::Thread* getOwner() const;

    };

}}}}

#endif /* _DECAF_UTIL_CONCURRENT_LOCKS_REENTRANTREADWRITELOCK_H_ */