SlsRequestQueue.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */
 
#pragma once
 
#include "SlsRequestPriorityClass.hxx"
#include <cache/SlsCacheContext.hxx>
#include <osl/mutex.hxx>
#include <svx/sdrpageuser.hxx>
 
#include <memory>
 
namespace sd::slidesorter::cache
{
class RequestQueue : public sdr::PageUser
{
public:
    explicit RequestQueue(SharedCacheContext pCacheContext);
    virtual ~RequestQueue();
 
    void AddRequest(CacheKey aKey, RequestPriorityClass eRequestClass);
 
#if OSL_DEBUG_LEVEL >= 2
    bool
#else
    void
#endif
    RemoveRequest(CacheKey aKey);
 
    void ChangeClass(CacheKey aKey, RequestPriorityClass eNewRequestClass);
 
    CacheKey GetFront();
 
    // For debugging.
    RequestPriorityClass GetFrontPriorityClass();
 
    void PopFront();
 
    bool IsEmpty();
 
    void Clear();
 
    ::osl::Mutex& GetMutex() { return maMutex; }
 
    virtual void PageInDestruction(const SdrPage& rPage) override;
 
private:
    ::osl::Mutex maMutex;
    class Container;
    std::unique_ptr<Container> mpRequestQueue;
    SharedCacheContext mpCacheContext;
 
    int mnMinimumPriority;
    int mnMaximumPriority;
};
 
} // end of namespace ::sd::slidesorter::cache
 
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