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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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 <sal/types.h>
#include <rtl/strbuf.hxx>
#include <vcl/timer.hxx>
#include <memory>
#include <mutex>
#include <chrono>
#include <o3tl/sorted_vector.hxx>
namespace vcl::graphic
{
class VCL_DLLPUBLIC MemoryManaged
{
private:
sal_Int64 mnCurrentSizeBytes = 0;
bool mbIsRegistered = false;
protected:
// Copy
MemoryManaged(MemoryManaged const& rMemoryManaged)
: mbIsRegistered(rMemoryManaged.mbIsRegistered)
{
// if the original is registered we need to register as well
if (mbIsRegistered)
registerIntoManager();
}
// Move
MemoryManaged(MemoryManaged&& rMemoryManaged)
: mbIsRegistered(rMemoryManaged.mbIsRegistered)
{
// if the original is registered we need to register as well
if (mbIsRegistered)
registerIntoManager();
}
MemoryManaged(bool bRegister)
{
if (bRegister)
registerIntoManager();
}
virtual ~MemoryManaged() { unregisterFromManager(); }
void updateCurrentSizeInBytes(sal_Int64 nNewSize)
{
if (mbIsRegistered)
{
auto& rManager = vcl::graphic::MemoryManager::get();
rManager.changeExisting(this, nNewSize);
}
else
{
mnCurrentSizeBytes = nNewSize;
}
}
void changeExisting(sal_Int64 nNewSize)
{
if (mbIsRegistered)
{
auto& rManager = vcl::graphic::MemoryManager::get();
rManager.changeExisting(this, nNewSize);
}
else
{
mnCurrentSizeBytes = nNewSize;
}
}
void swappedIn(sal_Int64 nNewSize)
{
if (mbIsRegistered)
{
auto& rManager = vcl::graphic::MemoryManager::get();
rManager.swappedIn(this, nNewSize);
}
else
{
mnCurrentSizeBytes = nNewSize;
}
}
void swappedOut(sal_Int64 nNewSize)
{
if (mbIsRegistered)
{
auto& rManager = vcl::graphic::MemoryManager::get();
rManager.swappedOut(this, nNewSize);
}
else
{
mnCurrentSizeBytes = nNewSize;
}
}
public:
sal_Int64 getCurrentSizeInBytes() const { return mnCurrentSizeBytes; }
void setCurrentSizeInBytes(sal_Int64 nSize) { mnCurrentSizeBytes = nSize; }
protected:
void registerIntoManager()
{
if (!mbIsRegistered)
{
auto& rManager = vcl::graphic::MemoryManager::get();
rManager.registerObject(this);
mbIsRegistered = true;
}
}
void unregisterFromManager()
{
if (mbIsRegistered)
{
auto& rManager = vcl::graphic::MemoryManager::get();
rManager.unregisterObject(this);
mbIsRegistered = false;
}
}
public:
virtual bool canReduceMemory() const = 0;
virtual bool reduceMemory() = 0;
virtual std::chrono::high_resolution_clock::time_point getLastUsed() const = 0;
virtual void dumpState(rtl::OStringBuffer& rState) = 0;
};
} // end namespace vcl::graphic
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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