1 #ifndef ALIFLATESDEVENT_H
2 #define ALIFLATESDEVENT_H
4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice *
6 * Primary Authors : Sergey Gorbunov, Jochen Thaeder, Chiara Zampolli */
9 * See implementation file for documentation
13 #include "AliFlatESDTrack.h"
14 #include "AliFlatESDV0.h"
17 struct AliFlatESDVertex;
21 class AliFlatESDEvent {
23 // --------------------------------------------------------------------------------
24 // -- Constructor / Destructors
26 AliFlatESDEvent(AliESDEvent *esd);
27 AliFlatESDEvent(AliESDEvent *esd, Bool_t useESDFriends);
30 // --------------------------------------------------------------------------------
31 // -- Fill / Set methods
34 Int_t Fill( const AliESDEvent *esd, const Bool_t useESDFriends = kTRUE, const Bool_t fillV0s=kTRUE );
36 void FillPrimaryVertices( const AliESDVertex *vertexSPD,
37 const AliESDVertex *vertexTracks );
40 AliFlatESDTrack *GetNextTrackPointer(){ return reinterpret_cast<AliFlatESDTrack*>(fContent + fSize); }
42 void StoreLastTrack(){
44 fSize+= GetNextTrackPointer()->GetSize();
48 AliFlatESDV0 *GetNextV0Pointer(){ return reinterpret_cast<AliFlatESDV0*>(fContent + fSize); }
52 fSize+= sizeof(AliFlatESDV0);
55 // --------------------------------------------------------------------------------
58 AliFlatESDVertex* GetPrimaryVertexSPD(){
59 return (fPrimaryVertexMask & 0x1) ? reinterpret_cast<AliFlatESDVertex*>(fContent) : NULL;
62 AliFlatESDVertex* GetPrimaryVertexTracks() {
63 return (fPrimaryVertexMask & 0x2) ? reinterpret_cast<AliFlatESDVertex*>(fContent + CountBits(fPrimaryVertexMask, 0x1)) : NULL;
66 Int_t GetNumberOfV0s() {return fNV0s;}
68 Int_t GetNumberOfTracks() {return fNTracks;}
70 AliFlatESDTrack *GetTracks() {return reinterpret_cast<AliFlatESDTrack*>(fContent + fTracksPointer);}
72 // --------------------------------------------------------------------------------
74 static ULong64_t EstimateSize(AliESDEvent*esd, Bool_t useESDFriends = kTRUE, Bool_t fillV0s=kTRUE);
75 ULong64_t GetSize() {return fContent - reinterpret_cast<Byte_t*>(this) + fSize;}
78 AliFlatESDEvent(const AliFlatESDEvent&);
79 AliFlatESDEvent& operator=(const AliFlatESDEvent&);
81 void FillPrimaryVertex(const AliESDVertex *v, Byte_t flag);
82 Int_t FillNextTrack( const AliESDtrack* esdTrack, AliESDfriendTrack* friendTrack);
83 Int_t FillNextV0( const AliESDV0 *v0);
84 UInt_t CountBits(Byte_t field, UInt_t mask);
86 // --------------------------------------------------------------------------------
87 // -- Fixed size member objects
88 // -> Try to align in memory
90 Byte_t fPrimaryVertexMask; // Bit mask specfifying which primary vertices are present
91 Int_t fNTracks; // Number of tracks in vector
92 ULong64_t fTracksPointer; // position of the first track in fContent
93 Int_t fNV0s; // Number of v0's
94 ULong64_t fV0Pointer; // position of the first V0 in fContent
97 ULong64_t fSize; // Size of this object
99 // --------------------------------------------------------------------------------
100 // -- Variable Size Object
101 Byte_t fContent[1]; // Variale size object, which contains all data