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7ca4655f | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
4c351225 | 16 | /* $Id$ */ |
17 | ||
7ca4655f | 18 | #include <TList.h> |
19 | ||
4c351225 | 20 | #include <AliPWG0depHelper.h> |
21 | ||
22 | #include <AliHeader.h> | |
23 | ||
24 | #include <AliGenEventHeader.h> | |
25 | #include <AliGenPythiaEventHeader.h> | |
26 | #include <AliGenCocktailEventHeader.h> | |
27 | ||
28 | //____________________________________________________________________ | |
29 | ClassImp(AliPWG0depHelper) | |
30 | ||
31 | //____________________________________________________________________ | |
32 | const Int_t AliPWG0depHelper::GetPythiaEventProcessType(AliHeader* aHeader, Bool_t adebug) { | |
33 | // | |
34 | // get the process type of the event. | |
35 | // | |
36 | ||
37 | // can only read pythia headers, either directly or from cocktalil header | |
38 | AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader->GenEventHeader()); | |
39 | ||
40 | if (!pythiaGenHeader) { | |
41 | ||
42 | AliGenCocktailEventHeader* genCocktailHeader = dynamic_cast<AliGenCocktailEventHeader*>(aHeader->GenEventHeader()); | |
43 | if (!genCocktailHeader) { | |
44 | printf("AliPWG0depHelper::GetProcessType : Unknown header type (not Pythia or Cocktail). \n"); | |
45 | return -1; | |
46 | } | |
47 | ||
48 | TList* headerList = genCocktailHeader->GetHeaders(); | |
49 | if (!headerList) { | |
50 | return -1; | |
51 | } | |
52 | ||
53 | for (Int_t i=0; i<headerList->GetEntries(); i++) { | |
54 | pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(headerList->At(i)); | |
55 | if (pythiaGenHeader) | |
56 | break; | |
57 | } | |
58 | ||
59 | if (!pythiaGenHeader) { | |
60 | printf("AliPWG0depHelper::GetProcessType : Could not find Pythia header. \n"); | |
61 | return -1; | |
62 | } | |
63 | } | |
64 | ||
65 | if (adebug) { | |
66 | printf("AliPWG0depHelper::GetProcessType : Pythia process type found: %d \n",pythiaGenHeader->ProcessType()); | |
67 | } | |
68 | ||
69 | return pythiaGenHeader->ProcessType(); | |
70 | } |