TreeMod/src/Selector.cc

// $Id: Selector.cc,v 1.8 2008/12/04 14:13:44 loizides Exp $

#include "MitAna/TreeMod/interface/Selector.h"
#include "MitAna/DataTree/interface/Names.h"
#include "MitAna/TreeMod/interface/OutputMod.h"
#include <TProcessID.h>
#include <TFile.h>
#include <TTree.h>

using namespace mithep;

ClassImp(mithep::Selector)

//--------------------------------------------------------------------------------------------------
Selector::Selector() :
  fDoRunInfo(kTRUE),
  fEvtHdrName(Names::gkEvtHeaderBrn),
  fRunTreeName(Names::gkRunTreeName),
  fRunInfoName(Names::gkRunInfoBrn),
  fAllEvtHdrBrn(Names::gkAllEvtHeaderBrn),
  fLATreeName(Names::gkLATreeName),
  fLAHdrName(Names::gkLAHeaderBrn),
  fAllEvtTreeName(Names::gkAllEvtTreeName),
  fRunTree(0),
  fEventHeader(0),
  fRunInfo(0),
  fLATree(0),
  fLAHeader(0),
  fCurRunNum(UInt_t(-1))
{
  // Constructor.

  fOutputMods.SetOwner(kFALSE);
}

//--------------------------------------------------------------------------------------------------
Selector::~Selector()
{
  // Destructor.

  fRunTree = 0;
  fEventHeader = 0;
  fRunInfo = 0;
  fLATree = 0;
  fLAHeader = 0;
  fCurRunNum = UInt_t(-1);
}

//--------------------------------------------------------------------------------------------------
Bool_t Selector::BeginRun()
{
  // Determines whether we are at beginning of a new run.

  if (!fDoRunInfo) 
    return kFALSE;

  LoadBranch(fEvtHdrName);
  if (!fEventHeader) 
    return kFALSE;

  if (ConsistentRunNum())
    return kFALSE;

  UpdateRunInfo();
  return ValidRunNum();
}

//--------------------------------------------------------------------------------------------------
Bool_t Selector::EndRun()
{
  // Determines whether we are at the end of a run. Also, do treat special case of output module 
  // here so that in any case it can process the event.

  if (IsAModAborted() || IsEventAborted()) { // deal with output module if needed: Do this here,
    TIter it(fOutputMods.MakeIterator());    // avoids having to copy/rewrite large parts of
    OutputMod *o = 0;                        // TAMSelector::Process and interaction with TAModule
    while ((o=static_cast<OutputMod*>(it.Next())) != 0)
      o->ProcessAll();
  }

  if (!fDoRunInfo) 
    return kFALSE;

  if (!ValidRunNum())
    return kFALSE;

  // determine if run will end
  if (fCurEvt+1==fTree->GetTree()->GetEntries())
    return kTRUE; // we are at last entry in current file

  fLAHeader=0;
  Int_t ret = fLATree->GetEvent(fCurEvt);
  if (ret<0 || fLAHeader==0) {
    Error("EndRun", "Could not get entry lookahead entry for next event,"
                    " assuming end of run %ld reached!", fCurRunNum);
    return kTRUE;
  }

  return (fLAHeader->RunNum()!=fCurRunNum);
}

//--------------------------------------------------------------------------------------------------
Bool_t Selector::Notify()
{
  // The Notify() function is called when a new file is opened. 
  // Here, we check for a new run info tree. 

  if (!GetCurrentFile()) 
    return kTRUE;

  if (fDoRunInfo) 
    UpdateRunInfoTree();

  //needed to force caching to occur for all files  
  fTree->GetTree()->SetCacheSize(fTree->GetCacheSize());
    
  return TAMSelector::Notify();
}

//--------------------------------------------------------------------------------------------------
void Selector::SearchOutputMods(const TAModule *mod)
{
  // Search for output module among list of modules.

  if (!mod)
    return;

  const OutputMod *o = dynamic_cast<const OutputMod*>(mod);
  if (o)
    fOutputMods.Add(const_cast<OutputMod*>(o));

  const TList *tasks = mod->GetSubModules();
  if (!tasks) 
    return;

  TIter it(tasks->MakeIterator());
  TObject *ob = 0;
  while ((ob=it.Next()) != 0) {
    TAModule *nmod = dynamic_cast<TAModule*>(ob);
    if (nmod) 
      SearchOutputMods(nmod);
  }
}

//--------------------------------------------------------------------------------------------------
void Selector::SlaveBegin(TTree *tree)
{
  // The SlaveBegin() function is called after the Begin() function and can be used to setup
  // analysis on the slaves. Here, we request the event header branch.

  if (fDoRunInfo) {
    ReqBranch(fEvtHdrName, fEventHeader);
  }

  SearchOutputMods(GetTopModule());

  TAMSelector::SlaveBegin(tree);
}

//--------------------------------------------------------------------------------------------------
void Selector::UpdateRunInfo() 
{
  // Update the run info to be consistent with the information from the event header.

  fRunInfo   = 0;

  if (!fRunTree) 
    return;

  Int_t ret = fRunTree->GetEvent(fEventHeader->RunEntry());
  if (ret<0 || fRunInfo==0) {
    Error("UpdateRunInfo", "Error updating run info for run %ld, entry %ld, return value %d", 
          fEventHeader->RunNum(), fEventHeader->RunEntry(), ret);
    return;
  }

  fCurRunNum = fEventHeader->RunNum();
  if (!ValidRunInfo()) {
    Error("UpdateRunInfo", "Error updating run info, run values do not match %d %d", 
          fCurRunNum, fRunInfo->RunNum());
    return;
  }
}

//--------------------------------------------------------------------------------------------------
void Selector::UpdateRunInfoTree() 
{
  // Get the run info tree from current file and set our branches.

  // first erase previous entries
  fRunTree   = 0;
  fRunInfo   = 0;
  fCurRunNum = UInt_t(-1);
  fLATree    = 0;
  fLAHeader  = 0;

  // get current file and retrieve trees
  TFile *f = GetCurrentFile();
  if (!f) {
    Error("UpdateRunInfoTree", "Ptr to current file is null");
    return;
  }

  // run info tree
  fRunTree = dynamic_cast<TTree*>(f->Get(fRunTreeName));
  if (!fRunTree) {
    Fatal("UpdateRunInfoTree", "Can not find run info tree with name %s", fRunTreeName.Data());
  }

  // set branches 
  if (fRunTree->GetBranch(fRunInfoName)) {
    fRunTree->SetBranchAddress(fRunInfoName, &fRunInfo);
  } else {
    Fatal("UpdateRunInfoTree", "Can not find run info branch with name %s", fRunInfoName.Data());
  }

  // look-ahead tree
  fLATree = dynamic_cast<TTree*>(f->Get(fLATreeName));
  if (!fLATree) {
    Fatal("UpdateRunInfoTree", "Can not find look-ahead tree with name %s", fLATreeName.Data());
  }

  // set branches 
  if (fLATree->GetBranch(fLAHdrName)) {
    fLATree->SetBranchAddress(fLAHdrName, &fLAHeader);
  } else {
    Fatal("UpdateRunInfoTree", "Can not find look-ahead branch with name %s", fLAHdrName.Data());
  }
}
Revision:	1.9
Committed:	Fri Dec 12 16:57:42 2008 UTC (16 years, 4 months ago) by bendavid
Content type:	text/plain
Branch:	MAIN
CVS Tags:	Mit_006b, Mit_006a
Changes since 1.8:	+4 -1 lines
Log Message:	Added read caching for the events tree, enabled by default set to 128mb
#	User	Rev	Content
1	bendavid	1.9	// $Id: Selector.cc,v 1.8 2008/12/04 14:13:44 loizides Exp $
2	loizides	1.1
3			#include "MitAna/TreeMod/interface/Selector.h"
4	loizides	1.2	#include "MitAna/DataTree/interface/Names.h"
5	loizides	1.6	#include "MitAna/TreeMod/interface/OutputMod.h"
6	loizides	1.2	#include <TProcessID.h>
7			#include <TFile.h>
8			#include <TTree.h>
9
10	loizides	1.1	using namespace mithep;
11
12			ClassImp(mithep::Selector)
13
14	loizides	1.4	//--------------------------------------------------------------------------------------------------
15	loizides	1.2	Selector::Selector() :
16			fDoRunInfo(kTRUE),
17	loizides	1.5	fEvtHdrName(Names::gkEvtHeaderBrn),
18			fRunTreeName(Names::gkRunTreeName),
19			fRunInfoName(Names::gkRunInfoBrn),
20	loizides	1.6	fAllEvtHdrBrn(Names::gkAllEvtHeaderBrn),
21	loizides	1.5	fLATreeName(Names::gkLATreeName),
22			fLAHdrName(Names::gkLAHeaderBrn),
23	loizides	1.6	fAllEvtTreeName(Names::gkAllEvtTreeName),
24	loizides	1.2	fRunTree(0),
25			fEventHeader(0),
26			fRunInfo(0),
27			fLATree(0),
28	loizides	1.3	fLAHeader(0),
29			fCurRunNum(UInt_t(-1))
30	loizides	1.1	{
31	loizides	1.5	// Constructor.
32	loizides	1.7
33			fOutputMods.SetOwner(kFALSE);
34	loizides	1.1	}
35
36	loizides	1.4	//--------------------------------------------------------------------------------------------------
37	loizides	1.1	Selector::~Selector()
38			{
39	loizides	1.5	// Destructor.
40
41			fRunTree = 0;
42			fEventHeader = 0;
43			fRunInfo = 0;
44			fLATree = 0;
45			fLAHeader = 0;
46			fCurRunNum = UInt_t(-1);
47	loizides	1.1	}
48	loizides	1.2
49	loizides	1.4	//--------------------------------------------------------------------------------------------------
50	loizides	1.2	Bool_t Selector::BeginRun()
51			{
52			// Determines whether we are at beginning of a new run.
53
54			if (!fDoRunInfo)
55			return kFALSE;
56
57	loizides	1.5	LoadBranch(fEvtHdrName);
58	loizides	1.2	if (!fEventHeader)
59			return kFALSE;
60
61			if (ConsistentRunNum())
62			return kFALSE;
63
64			UpdateRunInfo();
65			return ValidRunNum();
66			}
67
68	loizides	1.4	//--------------------------------------------------------------------------------------------------
69	loizides	1.2	Bool_t Selector::EndRun()
70			{
71	loizides	1.6	// Determines whether we are at the end of a run. Also, do treat special case of output module
72	loizides	1.7	// here so that in any case it can process the event.
73
74			if (IsAModAborted() \|\| IsEventAborted()) { // deal with output module if needed: Do this here,
75			TIter it(fOutputMods.MakeIterator()); // avoids having to copy/rewrite large parts of
76			OutputMod *o = 0; // TAMSelector::Process and interaction with TAModule
77			while ((o=static_cast<OutputMod*>(it.Next())) != 0)
78			o->ProcessAll();
79			}
80	loizides	1.2
81			if (!fDoRunInfo)
82			return kFALSE;
83
84			if (!ValidRunNum())
85			return kFALSE;
86
87			// determine if run will end
88			if (fCurEvt+1==fTree->GetTree()->GetEntries())
89			return kTRUE; // we are at last entry in current file
90
91			fLAHeader=0;
92			Int_t ret = fLATree->GetEvent(fCurEvt);
93			if (ret<0 \|\| fLAHeader==0) {
94			Error("EndRun", "Could not get entry lookahead entry for next event,"
95			" assuming end of run %ld reached!", fCurRunNum);
96			return kTRUE;
97			}
98
99			return (fLAHeader->RunNum()!=fCurRunNum);
100			}
101
102	loizides	1.4	//--------------------------------------------------------------------------------------------------
103	loizides	1.2	Bool_t Selector::Notify()
104			{
105	loizides	1.5	// The Notify() function is called when a new file is opened.
106			// Here, we check for a new run info tree.
107	loizides	1.2
108			if (!GetCurrentFile())
109			return kTRUE;
110
111			if (fDoRunInfo)
112			UpdateRunInfoTree();
113
114	bendavid	1.9	//needed to force caching to occur for all files
115			fTree->GetTree()->SetCacheSize(fTree->GetCacheSize());
116
117	loizides	1.2	return TAMSelector::Notify();
118			}
119
120	loizides	1.4	//--------------------------------------------------------------------------------------------------
121	loizides	1.7	void Selector::SearchOutputMods(const TAModule *mod)
122			{
123			// Search for output module among list of modules.
124
125			if (!mod)
126			return;
127
128			const OutputMod o = dynamic_cast<const OutputMod>(mod);
129			if (o)
130			fOutputMods.Add(const_cast<OutputMod*>(o));
131
132			const TList *tasks = mod->GetSubModules();
133			if (!tasks)
134			return;
135
136			TIter it(tasks->MakeIterator());
137			TObject *ob = 0;
138			while ((ob=it.Next()) != 0) {
139			TAModule nmod = dynamic_cast<TAModule>(ob);
140			if (nmod)
141			SearchOutputMods(nmod);
142			}
143			}
144
145			//--------------------------------------------------------------------------------------------------
146	loizides	1.6	void Selector::SlaveBegin(TTree *tree)
147	loizides	1.2	{
148			// The SlaveBegin() function is called after the Begin() function and can be used to setup
149			// analysis on the slaves. Here, we request the event header branch.
150
151			if (fDoRunInfo) {
152	loizides	1.7	ReqBranch(fEvtHdrName, fEventHeader);
153	loizides	1.2	}
154
155	loizides	1.7	SearchOutputMods(GetTopModule());
156
157	loizides	1.2	TAMSelector::SlaveBegin(tree);
158			}
159
160	loizides	1.4	//--------------------------------------------------------------------------------------------------
161	loizides	1.2	void Selector::UpdateRunInfo()
162			{
163			// Update the run info to be consistent with the information from the event header.
164
165			fRunInfo = 0;
166
167			if (!fRunTree)
168			return;
169
170			Int_t ret = fRunTree->GetEvent(fEventHeader->RunEntry());
171			if (ret<0 \|\| fRunInfo==0) {
172			Error("UpdateRunInfo", "Error updating run info for run %ld, entry %ld, return value %d",
173			fEventHeader->RunNum(), fEventHeader->RunEntry(), ret);
174			return;
175			}
176
177			fCurRunNum = fEventHeader->RunNum();
178			if (!ValidRunInfo()) {
179			Error("UpdateRunInfo", "Error updating run info, run values do not match %d %d",
180			fCurRunNum, fRunInfo->RunNum());
181			return;
182			}
183			}
184
185	loizides	1.4	//--------------------------------------------------------------------------------------------------
186	loizides	1.2	void Selector::UpdateRunInfoTree()
187			{
188			// Get the run info tree from current file and set our branches.
189
190			// first erase previous entries
191			fRunTree = 0;
192			fRunInfo = 0;
193			fCurRunNum = UInt_t(-1);
194			fLATree = 0;
195			fLAHeader = 0;
196
197			// get current file and retrieve trees
198			TFile *f = GetCurrentFile();
199			if (!f) {
200			Error("UpdateRunInfoTree", "Ptr to current file is null");
201			return;
202			}
203
204			// run info tree
205	loizides	1.5	fRunTree = dynamic_cast<TTree*>(f->Get(fRunTreeName));
206	loizides	1.2	if (!fRunTree) {
207	loizides	1.5	Fatal("UpdateRunInfoTree", "Can not find run info tree with name %s", fRunTreeName.Data());
208	loizides	1.2	}
209
210			// set branches
211	loizides	1.5	if (fRunTree->GetBranch(fRunInfoName)) {
212			fRunTree->SetBranchAddress(fRunInfoName, &fRunInfo);
213	loizides	1.2	} else {
214	loizides	1.5	Fatal("UpdateRunInfoTree", "Can not find run info branch with name %s", fRunInfoName.Data());
215	loizides	1.2	}
216
217			// look-ahead tree
218	loizides	1.5	fLATree = dynamic_cast<TTree*>(f->Get(fLATreeName));
219	loizides	1.2	if (!fLATree) {
220	loizides	1.5	Fatal("UpdateRunInfoTree", "Can not find look-ahead tree with name %s", fLATreeName.Data());
221	loizides	1.2	}
222
223			// set branches
224	loizides	1.5	if (fLATree->GetBranch(fLAHdrName)) {
225			fLATree->SetBranchAddress(fLAHdrName, &fLAHeader);
226	loizides	1.2	} else {
227	loizides	1.5	Fatal("UpdateRunInfoTree", "Can not find look-ahead branch with name %s", fLAHdrName.Data());
228	loizides	1.2	}
229			}