126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
/**
|
|
* Orthanc - A Lightweight, RESTful DICOM Store
|
|
* Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
|
|
* Department, University Hospital of Liege, Belgium
|
|
* Copyright (C) 2017-2023 Osimis S.A., Belgium
|
|
* Copyright (C) 2024-2025 Orthanc Team SRL, Belgium
|
|
* Copyright (C) 2021-2025 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
|
|
*
|
|
* This program is free software: you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public License
|
|
* as published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this program. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
**/
|
|
|
|
|
|
#pragma once
|
|
|
|
#include "../Cache/MemoryStringCache.h"
|
|
|
|
#include "../Compatibility.h" // For ORTHANC_OVERRIDE
|
|
|
|
#include <boost/thread/mutex.hpp>
|
|
#include <map>
|
|
|
|
namespace Orthanc
|
|
{
|
|
/**
|
|
* Note: this class is thread safe
|
|
**/
|
|
class ORTHANC_PUBLIC StorageCache : public boost::noncopyable
|
|
{
|
|
public:
|
|
|
|
// The StorageCache is only accessible through this accessor.
|
|
// It will make sure that only one user will fill load data and fill
|
|
// the cache if multiple users try to access the same item at the same time.
|
|
// This scenario happens a lot when multiple workers from a viewer access
|
|
// the same file.
|
|
class Accessor : public MemoryStringCache::Accessor
|
|
{
|
|
StorageCache& storageCache_;
|
|
public:
|
|
explicit Accessor(StorageCache& cache);
|
|
|
|
void Add(const std::string& uuid,
|
|
FileContentType contentType,
|
|
const std::string& value);
|
|
|
|
void AddStartRange(const std::string& uuid,
|
|
FileContentType contentType,
|
|
const std::string& value);
|
|
|
|
void Add(const std::string& uuid,
|
|
FileContentType contentType,
|
|
const void* buffer,
|
|
size_t size);
|
|
|
|
bool Fetch(std::string& value,
|
|
const std::string& uuid,
|
|
FileContentType contentType);
|
|
|
|
bool FetchStartRange(std::string& value,
|
|
const std::string& uuid,
|
|
FileContentType contentType,
|
|
uint64_t end /* exclusive */);
|
|
|
|
bool FetchTranscodedInstance(std::string& value,
|
|
const std::string& uuid,
|
|
DicomTransferSyntax targetSyntax);
|
|
|
|
void AddTranscodedInstance(const std::string& uuid,
|
|
DicomTransferSyntax targetSyntax,
|
|
const void* buffer,
|
|
size_t size);
|
|
};
|
|
|
|
private:
|
|
MemoryStringCache cache_;
|
|
std::set<DicomTransferSyntax> subKeysTransferSyntax_;
|
|
boost::mutex subKeysMutex_;
|
|
|
|
public:
|
|
void SetMaximumSize(size_t size);
|
|
|
|
void Invalidate(const std::string& uuid,
|
|
FileContentType contentType);
|
|
|
|
size_t GetCurrentSize() const;
|
|
|
|
size_t GetNumberOfItems() const;
|
|
|
|
private:
|
|
void Add(const std::string& uuid,
|
|
FileContentType contentType,
|
|
const std::string& value);
|
|
|
|
void AddStartRange(const std::string& uuid,
|
|
FileContentType contentType,
|
|
const std::string& value);
|
|
|
|
void Add(const std::string& uuid,
|
|
FileContentType contentType,
|
|
const void* buffer,
|
|
size_t size);
|
|
|
|
bool Fetch(std::string& value,
|
|
const std::string& uuid,
|
|
FileContentType contentType);
|
|
|
|
bool FetchStartRange(std::string& value,
|
|
const std::string& uuid,
|
|
FileContentType contentType,
|
|
uint64_t end /* exclusive */);
|
|
|
|
};
|
|
}
|