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ConcurrentMergeScheduler.h
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1 // Copyright (c) 2009-2014 Alan Wright. All rights reserved.
3 // Distributable under the terms of either the Apache License (Version 2.0)
4 // or the GNU Lesser General Public License.
6 
7 #ifndef CONCURRENTMERGESCHEDULER_H
8 #define CONCURRENTMERGESCHEDULER_H
9 
10 #include "MergeScheduler.h"
11 
12 namespace Lucene {
13 
20 public:
22  virtual ~ConcurrentMergeScheduler();
23 
25 
26 protected:
27  int32_t mergeThreadPriority;
28 
29  SetMergeThread mergeThreads;
30 
32  int32_t maxThreadCount;
33 
35 
36  bool closed;
38 
40 
42  static bool anyExceptions;
43 
44 public:
45  virtual void initialize();
46 
50  virtual void setMaxThreadCount(int32_t count);
51 
53  virtual int32_t getMaxThreadCount();
54 
57  virtual int32_t getMergeThreadPriority();
58 
60  virtual void setMergeThreadPriority(int32_t pri);
61 
62  virtual void close();
63 
64  virtual void sync();
65 
66  virtual void merge(const IndexWriterPtr& writer);
67 
69  static bool anyUnhandledExceptions();
70  static void clearUnhandledExceptions();
71 
73  void setSuppressExceptions();
74  void clearSuppressExceptions();
75 
77  static void setTestMode();
78 
79 protected:
80  virtual bool verbose();
81  virtual void message(const String& message);
82  virtual void initMergeThreadPriority();
83  virtual int32_t mergeThreadCount();
84 
86  virtual void doMerge(const OneMergePtr& merge);
87 
88  virtual MergeThreadPtr getMergeThread(const IndexWriterPtr& writer, const OneMergePtr& merge);
89 
91  virtual void handleMergeException(const LuceneException& exc);
92 
93  virtual void addMyself();
94 
95  friend class MergeThread;
96 };
97 
98 }
99 
100 #endif
boost::shared_ptr< OneMerge > OneMergePtr
Definition: LuceneTypes.h:192
boost::shared_ptr< MergeThread > MergeThreadPtr
Definition: LuceneTypes.h:177
boost::shared_ptr< IndexWriter > IndexWriterPtr
Definition: LuceneTypes.h:160
IndexWriterWeakPtr _writer
Definition: ConcurrentMergeScheduler.h:37
bool closed
Definition: ConcurrentMergeScheduler.h:36
boost::weak_ptr< IndexWriter > IndexWriterWeakPtr
Definition: LuceneTypes.h:160
SetMergeThread mergeThreads
Definition: ConcurrentMergeScheduler.h:29
int32_t maxThreadCount
Max number of threads allowed to be merging at once.
Definition: ConcurrentMergeScheduler.h:32
bool suppressExceptions
Definition: ConcurrentMergeScheduler.h:41
boost::shared_ptr< Directory > DirectoryPtr
Definition: LuceneTypes.h:489
#define LUCENE_CLASS(Name)
Definition: LuceneObject.h:24
Definition: AbstractAllTermDocs.h:12
Lucene exception container.
Definition: LuceneException.h:15
A MergeScheduler that runs each merge using a separate thread, up until a maximum number of threads (...
Definition: ConcurrentMergeScheduler.h:19
static Collection< ConcurrentMergeSchedulerPtr > allInstances
Definition: ConcurrentMergeScheduler.h:39
DirectoryPtr dir
Definition: ConcurrentMergeScheduler.h:34
static bool anyExceptions
Definition: ConcurrentMergeScheduler.h:42
IndexWriter uses an instance implementing this interface to execute the merges selected by a MergePol...
Definition: MergeScheduler.h:16

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