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annotate OrthancFramework/Sources/DicomParsing/ParsedDicomCache.h @ 4456:3e4f7b7840f0

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new class: ParsedDicomCache()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 19 Jan 2021 16:11:23 +0100
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children 789676a8c96a
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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 "../Cache/MemoryObjectCache.h"
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26 #include "ParsedDicomFile.h"
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27
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28 namespace Orthanc
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29 {
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30 class ParsedDicomCache : public boost::noncopyable
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31 {
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32 private:
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33 class Item;
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34
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35 boost::mutex mutex_;
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36 size_t cacheSize_;
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37 std::unique_ptr<MemoryObjectCache> cache_;
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38 std::unique_ptr<ParsedDicomFile> largeDicom_;
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39 std::string largeId_;
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40 size_t largeSize_;
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41
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42 public:
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43 explicit ParsedDicomCache(size_t size);
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44
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45 size_t GetCurrentSize(); // For unit tests only
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46
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47 void Invalidate(const std::string& id);
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48
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49 void Acquire(const std::string& id,
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50 ParsedDicomFile* dicom, // Takes ownership
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51 size_t fileSize);
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52
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53 class Accessor : public boost::noncopyable
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54 {
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55 private:
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56 boost::mutex::scoped_lock lock_;
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57 std::string id_;
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58 ParsedDicomFile* file_;
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59 size_t fileSize_;
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60
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61 std::unique_ptr<MemoryObjectCache::Accessor> accessor_;
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62
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63 public:
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64 Accessor(ParsedDicomCache& that,
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65 const std::string& id);
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66
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67 bool IsValid() const
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68 {
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69 return file_ != NULL;
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70 }
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71
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72 ParsedDicomFile& GetDicom() const;
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73
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74 size_t GetFileSize() const;
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75 };
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76 };
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77 }