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annotate OrthancFramework/Sources/Cache/MemoryStringCache.h @ 4792:434843934307 storage-cache

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Added a StorageCache in the StorageAccessor
author Alain Mazy <am@osimis.io>
date Thu, 30 Sep 2021 12:14:19 +0200
parents d9473bd5ed43
children 7053502fbf97
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #pragma once
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24
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25 #include "MemoryObjectCache.h"
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26
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27 namespace Orthanc
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28 {
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29 /**
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30 * Facade object around "MemoryObjectCache" that caches a dictionary
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31 * of strings, using the "fetch/add" paradigm of memcached.
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32 *
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33 * Note: this class is thread safe
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34 **/
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35 class ORTHANC_PUBLIC MemoryStringCache : public boost::noncopyable
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36 {
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37 private:
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38 class StringValue;
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39
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40 MemoryObjectCache cache_;
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41
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42 public:
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43 size_t GetMaximumSize();
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44
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45 void SetMaximumSize(size_t size);
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46
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47 void Add(const std::string& key,
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48 const std::string& value);
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50 void Add(const std::string& key,
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51 const void* buffer,
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52 size_t size);
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53
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54 void Invalidate(const std::string& key);
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55
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56 bool Fetch(std::string& value,
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57 const std::string& key);
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58 };
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59 }