Cache.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * 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/.
 */
 
#pragma once
 
#include "AUI/Common/AString.h"
#include "AUI/Common/AMap.h"
#include "AUI/Common/SharedPtr.h"
#include "AUI/Thread/AMutex.h"
 
template<typename T, typename Container, typename K = AString>
class Cache {
private:
   AMap<K, _<T>> mContainer;
   AMutex mSync;
 
protected:
   virtual _<T> load(const K& key) = 0;
 
   virtual bool isShouldBeCached(const K& key, const _<T>& image) {
       return true;
   }
 
public:
 
   static _<T> get(const K& key) {
       Cache& i = Container::inst();
       {
           std::unique_lock lock(i.mSync);
           if (auto i = Container::inst().mContainer.contains(key)) {
               return i->second;
           }
       }
       auto value = i.load(key);
       if (i.isShouldBeCached(key, value)) {
           put(key, value);
       }
       return value;
   }
 
   static void put(const K& key, _<T> value) {
       std::unique_lock lock(Container::inst().mSync);
       Container::inst().mContainer[key] = value;
   }
 
   static void cleanup() {
       std::unique_lock lock(Container::inst().mSync);
       Container::inst().mContainer.clear();
   }
};

© 2025 AUI Framework Contributors. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. All trademarks are property of their respective owners.