Version: 7.8.0
LocalTraceBufferPool.hxx
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1 // Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
2 //
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
5 //
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
10 //
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
15 //
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 //
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
21 //
22 
23 // Author : Paul RASCLE (EDF)
24 // Module : KERNEL
25 // $Header$
26 //
27 #ifndef _LOCALTRACEBUFFERPOOL_HXX_
28 #define _LOCALTRACEBUFFERPOOL_HXX_
29 
30 #include "SALOME_LocalTrace.hxx"
31 
32 #define TRACE_BUFFER_SIZE 512 // number of entries in circular buffer
33  // must be power of 2
34 #define MAX_TRACE_LENGTH 1024 // messages are truncated at this size
35 
36 #include <pthread.h>
37 #include <semaphore.h>
38 #include "BaseTraceCollector.hxx"
39 #include "BasicsGenericDestructor.hxx"
40 
41 #define ABORT_MESS 1 // for traceType field in struct LocalTrace_TraceInfo
42 #define NORMAL_MESS 0
43 
44 struct SALOMELOCALTRACE_EXPORT LocalTrace_TraceInfo
45 {
46  char trace[MAX_TRACE_LENGTH];
47  pthread_t threadId;
48  int traceType; // normal or abort
49  int position; // to check sequence
50 };
51 
52 class SALOMELOCALTRACE_EXPORT LocalTraceBufferPool : public PROTECTED_DELETE
53 {
54  public:
55  static LocalTraceBufferPool* instance();
56  int insert(int traceType, const char* msg);
57  int retrieve(LocalTrace_TraceInfo& aTrace);
58  unsigned long toCollect();
59 
60  protected:
61  LocalTraceBufferPool();
62  virtual ~LocalTraceBufferPool();
63  unsigned long lockedIncrement(unsigned long& pos);
64 
65  private:
66  static LocalTraceBufferPool* _singleton;
67  static pthread_mutex_t _singletonMutex;
68  static BaseTraceCollector *_myThreadTrace;
69 
70  LocalTrace_TraceInfo _myBuffer[TRACE_BUFFER_SIZE];
71  sem_t _freeBufferSemaphore; // to wait until there is a free buffer
72  sem_t _fullBufferSemaphore; // to wait until there is a buffer to print
73  pthread_mutex_t _incrementMutex; // to lock position variables for increment
74  unsigned long _position;
75  unsigned long _insertPos;
76  unsigned long _retrievePos;
77 };
78 
79 #endif