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1 //-*- Mode: C++ -*-
2 // ************************************************************************
3 // This file is property of and copyright by the ALICE HLT Project        *
4 // ALICE Experiment at CERN, All rights reserved.                         *
5 // See cxx source for full Copyright notice                               *
6 //                                                                        *
7 //*************************************************************************
8
9 #ifndef ALIHLTTPCCANEIGHBOURSFINDER_H
10 #define ALIHLTTPCCANEIGHBOURSFINDER_H
11
12
13 #include "AliHLTTPCCADef.h"
14 #include "AliHLTTPCCARow.h"
15 #include "AliHLTTPCCAGPUConfig.h"
16 MEM_CLASS_PRE() class AliHLTTPCCATracker;
17
18 /**
19  * @class AliHLTTPCCANeighboursFinder
20  *
21  */
22 class AliHLTTPCCANeighboursFinder
23 {
24   public:
25     MEM_CLASS_PRE() class AliHLTTPCCASharedMemory
26     {
27         friend class AliHLTTPCCANeighboursFinder;
28       public:
29 #if !defined(HLTCA_GPUCODE)
30         AliHLTTPCCASharedMemory()
31             : fNHits( 0 ), fUpNHits( 0 ), fDnNHits( 0 ), fUpDx( 0 ), fDnDx( 0 ), fUpTx( 0 ), fDnTx( 0 ), fIRow( 0 ), fIRowUp( 0 ), fIRowDn( 0 ), fNRows( 0 ), fRow(), fRowUp(), fRowDown() {}
32
33         AliHLTTPCCASharedMemory( const AliHLTTPCCASharedMemory& /*dummy*/ )
34             : fNHits( 0 ), fUpNHits( 0 ), fDnNHits( 0 ), fUpDx( 0 ), fDnDx( 0 ), fUpTx( 0 ), fDnTx( 0 ), fIRow( 0 ), fIRowUp( 0 ), fIRowDn( 0 ), fNRows( 0 ), fRow(), fRowUp(), fRowDown() {}
35         AliHLTTPCCASharedMemory& operator=( const AliHLTTPCCASharedMemory& /*dummy*/ ) { return *this; }
36 #endif //!HLTCA_GPUCODE
37
38       protected:
39         int fNHits; // n hits
40         int fUpNHits; // n hits in the next row
41         int fDnNHits; // n hits in the prev row
42         float fUpDx; // x distance to the next row
43         float fDnDx; // x distance to the previous row
44         float fUpTx; // normalized x distance to the next row
45         float fDnTx; // normalized x distance to the previous row
46         int fIRow; // row number
47         int fIRowUp; // next row number
48         int fIRowDn;// previous row number
49         int fNRows; // number of rows
50 #if ALIHLTTPCCANEIGHBOURS_FINDER_MAX_NNEIGHUP > 0
51         float2 fA[HLTCA_GPU_THREAD_COUNT_FINDER][ALIHLTTPCCANEIGHBOURS_FINDER_MAX_NNEIGHUP]; // temp memory
52         unsigned short fB[HLTCA_GPU_THREAD_COUNT_FINDER][ALIHLTTPCCANEIGHBOURS_FINDER_MAX_NNEIGHUP]; // temp memory
53 #endif //ALIHLTTPCCANEIGHBOURS_FINDER_MAX_NNEIGHUP > 0
54                 MEM_LG(AliHLTTPCCARow) fRow, fRowUp, fRowDown;
55     };
56
57     GPUd() static int NThreadSyncPoints() { return 2; }
58
59     GPUd() static void Thread( int nBlocks, int nThreads, int iBlock, int iThread, int iSync,
60                                MEM_LOCAL(GPUsharedref() AliHLTTPCCASharedMemory) &smem, MEM_CONSTANT(GPUconstant() AliHLTTPCCATracker) &tracker );
61
62 };
63
64
65 #endif //ALIHLTTPCCANEIGHBOURSFINDER_H