143 lines
3.4 KiB
C++
143 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <sal/types.h>
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#include <rtl/strbuf.hxx>
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#include <vcl/timer.hxx>
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#include <memory>
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#include <mutex>
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#include <chrono>
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#include <o3tl/sorted_vector.hxx>
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namespace vcl::graphic
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{
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class VCL_DLLPUBLIC MemoryManaged
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{
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private:
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sal_Int64 mnCurrentSizeBytes = 0;
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bool mbIsRegistered = false;
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protected:
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// Copy
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MemoryManaged(MemoryManaged const& rMemoryManaged)
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: mbIsRegistered(rMemoryManaged.mbIsRegistered)
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{
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// if the original is registered we need to register as well
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if (mbIsRegistered)
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registerIntoManager();
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}
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// Move
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MemoryManaged(MemoryManaged&& rMemoryManaged)
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: mbIsRegistered(rMemoryManaged.mbIsRegistered)
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{
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// if the original is registered we need to register as well
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if (mbIsRegistered)
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registerIntoManager();
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}
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MemoryManaged(bool bRegister)
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{
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if (bRegister)
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registerIntoManager();
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}
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virtual ~MemoryManaged() { unregisterFromManager(); }
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void updateCurrentSizeInBytes(sal_Int64 nNewSize)
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{
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if (mbIsRegistered)
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{
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auto& rManager = vcl::graphic::MemoryManager::get();
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rManager.changeExisting(this, nNewSize);
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}
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else
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{
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mnCurrentSizeBytes = nNewSize;
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}
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}
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void changeExisting(sal_Int64 nNewSize)
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{
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if (mbIsRegistered)
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{
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auto& rManager = vcl::graphic::MemoryManager::get();
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rManager.changeExisting(this, nNewSize);
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}
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else
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{
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mnCurrentSizeBytes = nNewSize;
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}
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}
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void swappedIn(sal_Int64 nNewSize)
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{
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if (mbIsRegistered)
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{
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auto& rManager = vcl::graphic::MemoryManager::get();
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rManager.swappedIn(this, nNewSize);
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}
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else
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{
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mnCurrentSizeBytes = nNewSize;
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}
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}
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void swappedOut(sal_Int64 nNewSize)
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{
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if (mbIsRegistered)
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{
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auto& rManager = vcl::graphic::MemoryManager::get();
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rManager.swappedOut(this, nNewSize);
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}
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else
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{
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mnCurrentSizeBytes = nNewSize;
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}
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}
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public:
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sal_Int64 getCurrentSizeInBytes() const { return mnCurrentSizeBytes; }
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void setCurrentSizeInBytes(sal_Int64 nSize) { mnCurrentSizeBytes = nSize; }
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protected:
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void registerIntoManager()
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{
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if (!mbIsRegistered)
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{
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auto& rManager = vcl::graphic::MemoryManager::get();
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rManager.registerObject(this);
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mbIsRegistered = true;
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}
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}
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void unregisterFromManager()
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{
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if (mbIsRegistered)
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{
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auto& rManager = vcl::graphic::MemoryManager::get();
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rManager.unregisterObject(this);
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mbIsRegistered = false;
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}
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}
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public:
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virtual bool canReduceMemory() const = 0;
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virtual bool reduceMemory() = 0;
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virtual std::chrono::high_resolution_clock::time_point getLastUsed() const = 0;
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virtual void dumpState(rtl::OStringBuffer& rState) = 0;
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};
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} // end namespace vcl::graphic
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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