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root/cvsroot/UserCode/MitAna/DataUtil/src/TreeWriter.cc

Comparing UserCode/MitAna/DataUtil/src/TreeWriter.cc (file contents):
Revision 1.2 by loizides, Mon Jun 2 08:58:52 2008 UTC vs.
Revision 1.18 by paus, Wed Mar 28 12:15:35 2012 UTC

#	Line 1 | Line 1
1		// $Id$
2
3		#include "MitAna/DataUtil/interface/TreeWriter.h"
4	–
4		#include <Riostream.h>
5		#include <TObject.h>
6		#include <TSystem.h>
7		#include <TProcessID.h>
8	+	#include <TBranchRef.h>
9	+	#include "MitAna/DataUtil/interface/Debug.h"
10
11		using namespace mithep;
12
13		ClassImp(mithep::TreeWriter)
14
15		//__________________________________________________________________________________________________
16	<	TreeWriter::TreeWriter(const char *tname, Bool_t doreset)
17	<	: TNamed(tname,Form("%s written by mithep::TreeWriter", tname)),
18	<	fBaseURL("."),
19	<	fPrefix("mithep"),
20	<	fFileNumber(0),
21	<	fCompressLevel(9),
22	<	fDefBrSize(64*1024),
23	<	fDefSL(99),
24	<	fMaxSize((Long64_t)(0.99 * TTree::GetMaxTreeSize())),
25	<	fkMinFreeSpace(1024*1024),
26	<	fkMinAvgSize(10*1024),
27	<	fEvtObjNum(-1),
28	<	fIsInit(kFALSE),
29	<	fDoObjNumReset(doreset),
30	<	fFile(0),
31	<	fTrees(0)
16	>	TreeWriter::TreeWriter(const char *tname, Bool_t doreset) :
17	>	TNamed(tname,Form("%s written by mithep::TreeWriter", tname)),
18	>	fBaseURL("."),
19	>	fPrefix("mithep"),
20	>	fFileNumber(0),
21	>	fCompressLevel(9),
22	>	fDefBrSize(64*1024),
23	>	fDefSL(99),
24	>	fMaxSize((Long64_t)(0.99 * TTree::GetMaxTreeSize())),
25	>	fkMinFreeSpace(1024*1024),
26	>	fkMinAvgSize(10*1024),
27	>	fEvtObjNum(-1),
28	>	fIsInit(kFALSE),
29	>	fDoObjNumReset(doreset),
30	>	fDoBranchRef(0),
31	>	fFile(0),
32	>	fTrees(0)
33		{
34		// Constructor.
35
#	Line 39 | Line 41 | TreeWriter::~TreeWriter()
41		{
42		// Destructor.
43
44	<	if (fIsInit) {
43	<	CloseFile();
44	<	}
45	<
46	<	TDirectory::TContext context(0);
47	<	fTrees.Clear();
44	>	Terminate();
45		}
46
47		//__________________________________________________________________________________________________
48		void TreeWriter::AddBranch(const char *name, const char *cname,
49		void *obj, Int_t bsize, Int_t level)
50		{
51	<	// Add branch with name "name" into tree with name "tname" and set its address
52	<	// to object pointer for class name "cname" using a given buffer size and splitlevel.
51	>	// Add branch with name "name" into tree with name "tname" and set its address to object pointer
52	>	// for class name "cname" using a given buffer size and splitlevel.
53
54	<	MyTree *t = AddOrGetMyTree(GetName());
55	<	t->Bronch(name, cname, obj, bsize, level);
54	>	MyTree  *t = AddOrGetMyTree(GetName());
55	>	TBranch *b = t->Bronch(name, cname, obj, bsize, level);
56	>	b->SetCompressionLevel(GetCompressLevel());
57		}
58
59	<	//__________________________________________________________________________________________________
59	>	//--------------------------------------------------------------------------------------------------
60	>	void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize, Int_t level)
61	>	{
62	>	// Add branch with name "name" into tree with name "tname" and set its address to object pointer
63	>	// using a given buffer size and splitlevel.
64	>
65	>	AddBranch(name, CName(obj), obj, bsize, level);
66	>	}
67	>
68	>	//--------------------------------------------------------------------------------------------------
69		void TreeWriter::AddBranch(const char *name, const char *cname,
70		void *obj, Int_t bsize)
71		{
72	+	// Add branch with name "name" into tree with name "tname" and set its address to object pointer
73	+	// for class name "cname" using a given buffer size and default splitlevel.
74	+
75	+	MyTree  *t = AddOrGetMyTree(GetName());
76	+	TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
77	+	b->SetCompressionLevel(GetCompressLevel());
78	+	}
79	+
80	+	//--------------------------------------------------------------------------------------------------
81	+	void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize)
82	+	{
83		// Add branch with name "name" into tree with name "tname" and set its address
84	<	// to object pointer for class name "cname" using a given buffer size and default splitlevel.
84	>	// to object pointer using a given buffer size and default splitlevel.
85
86	<	MyTree *t = AddOrGetMyTree(GetName());
69	<	t->Bronch(name, cname, obj, bsize, fDefSL);
86	>	AddBranch(name, CName(obj), obj, bsize);
87		}
88
89	<	//__________________________________________________________________________________________________
89	>	//--------------------------------------------------------------------------------------------------
90		void TreeWriter::AddBranch(const char *name, const char *cname,
91		void *obj)
92		{
93		// Add branch with name "name" into tree with name "tname" and set its address
94	<	// to object pointer for class name "cname" using a given buffer size and default splitlevel.
94	>	// to object pointer for class name "cname" using a default buffer size and splitlevel.
95
96	<	MyTree *t = AddOrGetMyTree(GetName());
97	<	t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
96	>	MyTree  *t = AddOrGetMyTree(GetName());
97	>	TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
98	>	b->SetCompressionLevel(GetCompressLevel());
99		}
100
101	<	//__________________________________________________________________________________________________
101	>	//--------------------------------------------------------------------------------------------------
102	>	void TreeWriter::AddBranch(const char *name, void *obj)
103	>	{
104	>	// Add branch with name "name" into tree with name "tname" and set its address
105	>	// to object pointer using a default buffer size and splitlevel.
106	>
107	>	AddBranch(name, CName(obj), obj);
108	>	}
109	>
110	>	//--------------------------------------------------------------------------------------------------
111		void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
112		void *obj, Int_t bsize, Int_t level)
113		{
114		// Add branch with name "name" into tree with name "tname" and set its address
115		// to object pointer for class name "cname" using a given buffer size and splitlevel.
116
117	<	MyTree *t = AddOrGetMyTree(tname);
118	<	t->Bronch(name, cname, obj, bsize, level);
117	>	MyTree  *t = AddOrGetMyTree(tname);
118	>	TBranch *b = t->Bronch(name, cname, obj, bsize, level);
119	>	b->SetCompressionLevel(GetCompressLevel());
120		}
121
122	<	//__________________________________________________________________________________________________
122	>	//--------------------------------------------------------------------------------------------------
123	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj,
124	>	Int_t bsize, Int_t level)
125	>	{
126	>	// Add branch with name "name" into tree with name "tname" and set its address
127	>	// to object pointer using a given buffer size and splitlevel.
128	>
129	>	AddBranchToTree(tname, name, CName(obj), obj, bsize, level);
130	>	}
131	>
132	>	//--------------------------------------------------------------------------------------------------
133		void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
134	<	void *obj, Int_t bsize)
134	>	void *obj, Int_t bsize)
135		{
136		// Add branch with name "name" into tree with name "tname" and set its address
137		// to object pointer for class name "cname" using a given buffer size and default splitlevel.
138
139	<	MyTree *t = AddOrGetMyTree(tname);
140	<	t->Bronch(name, cname, obj, bsize, fDefSL);
139	>	MyTree  *t = AddOrGetMyTree(tname);
140	>	TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
141	>	b->SetCompressionLevel(GetCompressLevel());
142		}
143
144	<	//__________________________________________________________________________________________________
144	>	//--------------------------------------------------------------------------------------------------
145	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj,
146	>	Int_t bsize)
147	>	{
148	>	// Add branch with name "name" into tree with name "tname" and set its address
149	>	// to object pointer using a given buffer size and default splitlevel.
150	>
151	>	AddBranchToTree(tname, name, CName(obj), obj, bsize);
152	>	}
153	>
154	>	//--------------------------------------------------------------------------------------------------
155		void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname,
156	<	void *obj)
156	>	void *obj)
157		{
158		// Add branch with name "name" into tree with name "tname" and set its address
159	<	// to object pointer for class name "cname" using a given buffer size and default splitlevel.
159	>	// to object pointer for class name "cname" using a default buffer size and splitlevel.
160
161	<	MyTree *t = AddOrGetMyTree(tname);
162	<	t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
161	>	MyTree  *t = AddOrGetMyTree(tname);
162	>	TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
163	>	b->SetCompressionLevel(GetCompressLevel());
164		}
165
166	<	//__________________________________________________________________________________________________
166	>	//--------------------------------------------------------------------------------------------------
167	>	void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj)
168	>	{
169	>	// Add branch with name "name" into tree with name "tname" and set its address
170	>	// to object pointer for class name "cname" using a default buffer size and splitlevel.
171	>
172	>	AddBranchToTree(tname, name, CName(obj), obj);
173	>	}
174	>
175	>	//--------------------------------------------------------------------------------------------------
176	>	void TreeWriter::AddTree(const char *tname)
177	>	{
178	>	// Add tree with name "name" into tree with name "tname".
179	>
180	>	AddOrGetMyTree(tname);
181	>	}
182	>
183	>	//--------------------------------------------------------------------------------------------------
184		MyTree *TreeWriter::AddOrGetMyTree(const char *tn)
185		{
186		// Add new tree if not present in array of trees or return
187		// present tree.
188
189	<	MyTree *tree = dynamic_cast<MyTree*>(fTrees.FindObject(tn));
190	<	if (tree) return tree;
189	>	MyTree *tree = GetMyTree(tn);
190	>	if (tree)
191	>	return tree;
192
193		TDirectory::TContext context(fFile);
194		tree = new MyTree(tn, tn);
195		tree->SetDirectory(fFile);
196	+	if (fDoBranchRef)
197	+	tree->BranchRef();
198		fTrees.AddLast(tree);
199		return tree;
200		}
201
202	<	//__________________________________________________________________________________________________
202	>	//--------------------------------------------------------------------------------------------------
203		Bool_t TreeWriter::BeginEvent(Bool_t doreset)
204		{
205		// Prepare for the next event. If doreset or fDoObjNumReset is kTRUE
#	Line 146 | Line 216 | Bool_t TreeWriter::BeginEvent(Bool_t dor
216		return kTRUE;
217		}
218
219	<	//__________________________________________________________________________________________________
219	>	//--------------------------------------------------------------------------------------------------
220		void TreeWriter::CloseFile()
221		{
222		// Write tree(s) and close file.
#	Line 161 | Line 231 | void TreeWriter::CloseFile()
231
232		for (Int_t i=0;i<fTrees.GetEntries();++i) {
233		MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
234	+	mt->FlushBaskets();
235		mt->Write(mt->GetName(),TObject::kOverwrite);
236	<	mt->Reset();
236	>
237	>	// backup and restore list of branch pointers from TRefTable (needed for autoloading)
238	>	if (mt->GetBranchRef()) {
239	>	TObjArray *parents = mt->GetBranchRef()->GetRefTable()->GetParents();
240	>	TObjArray parentsBak(*parents);
241	>	mt->Reset();
242	>	for (Int_t j=0; j<parentsBak.GetEntries(); ++j)
243	>	parents->Add(parentsBak.At(j));
244	>	}
245	>	else
246	>	mt->Reset();
247		mt->SetDirectory(0);
248		}
249
#	Line 174 | Line 255 | void TreeWriter::CloseFile()
255		fFileNumber++;
256		}
257
258	<	//__________________________________________________________________________________________________
258	>	//--------------------------------------------------------------------------------------------------
259	>	const char *TreeWriter::CName(void *obj) const
260	>	{
261	>	// Dereference void* pointer into TObject* pointer
262	>
263	>	TObject **sobj = static_cast<TObject**>(obj);
264	>	TObject *tobj = dynamic_cast<TObject*>(*sobj);
265	>	if (tobj==0) {
266	>	Fatal("CName", "Given void* ptr cannot be dereferenced into TObject*");
267	>	}
268	>	return tobj->ClassName();
269	>	}
270	>
271	>	//--------------------------------------------------------------------------------------------------
272	>	void TreeWriter::DoBranchRef(const char *tn)
273	>	{
274	>	// Fill BranchRef for given tree.
275	>
276	>	if (fTrees.GetEntries()==0) {
277	>	Error("DoBranchRef", "Tree with name %s not found!", tn);
278	>	return;
279	>	}
280	>
281	>	MyTree *mt = GetMyTree(tn);
282	>	if (!mt)
283	>	return;
284	>
285	>	mt->BranchRef();
286	>	}
287	>
288	>	//--------------------------------------------------------------------------------------------------
289		Bool_t TreeWriter::EndEvent(Bool_t doreset)
290		{
291		// Store the event in the tree. If doreset or fDoObjNumReset is kTRUE
#	Line 189 | Line 300 | Bool_t TreeWriter::EndEvent(Bool_t dores
300		Int_t r = 0;
301		for (Int_t i=0;i<fTrees.GetEntries();++i) {
302		MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
303	<	if (mt->GetAutoFill()==0) continue;
303	>	if (mt->GetAutoFill()==0)
304	>	continue;
305		r += mt->Fill();
306		}
307
#	Line 200 | Line 312 | Bool_t TreeWriter::EndEvent(Bool_t dores
312		if (fEvtObjNum<0) {
313		Error("EndEvent", "Object counter is zero. Did you call BeginEvent(kTRUE)?");
314		} else {
315	<	// Reset the TRef table. keep it from growing with each event (see doc)
315	>	// Reset the TRef table. Keep it from growing with each event (see doc)
316		TProcessID::SetObjectCount(fEvtObjNum);
317		}
318		}
#	Line 208 | Line 320 | Bool_t TreeWriter::EndEvent(Bool_t dores
320		return (r >= 0);
321		}
322
323	<	//-------------------------------------------------------------------------------------------------
323	>	//--------------------------------------------------------------------------------------------------
324		Long64_t TreeWriter::GetEntries(const char *tn) const
325		{
326	<	//
326	>	// Return entries of tree with given name. If no tree is given, return sum of entries
327	>	// of all trees.
328
329		if (fTrees.GetEntries()==0) return -1;
330
331		if (tn) {
332		const TTree *mt=GetTree(tn);
333	<	if (mt) return mt->GetEntries();
334	<	else return -1;
333	>	if (mt)
334	>	return mt->GetEntries();
335	>	else
336	>	return -1;
337		}
338
339		Long64_t ret = 0;
#	Line 229 | Line 344 | Long64_t TreeWriter::GetEntries(const ch
344		return ret;
345		}
346
347	<	//-------------------------------------------------------------------------------------------------
347	>	//--------------------------------------------------------------------------------------------------
348		MyTree *mithep::TreeWriter::GetMyTree(const char *tn)
349		{
350		// Return MyTree with given name from array.
#	Line 249 | Line 364 | MyTree *mithep::TreeWriter::GetMyTree(co
364		return 0;
365		}
366
367	<	//-------------------------------------------------------------------------------------------------
367	>	//--------------------------------------------------------------------------------------------------
368		const TTree *mithep::TreeWriter::GetTree(const char *tn) const
369		{
370		// Return TTree with given name from array.
#	Line 269 | Line 384 | const TTree *mithep::TreeWriter::GetTree
384		return 0;
385		}
386
387	<	//-------------------------------------------------------------------------------------------------
387	>	//--------------------------------------------------------------------------------------------------
388		TTree *mithep::TreeWriter::GetTree(const char *tn)
389		{
390		// Return TTree with given name from array.
#	Line 289 | Line 404 | TTree *mithep::TreeWriter::GetTree(const
404		return 0;
405		}
406
407	<	//__________________________________________________________________________________________________
407	>	//--------------------------------------------------------------------------------------------------
408		Bool_t TreeWriter::IsFull() const
409		{
410		// Check if the maximum file size has been reached.
#	Line 305 | Line 420 | Bool_t TreeWriter::IsFull() const
420		return (GetFileSize() + avgSize + fkMinFreeSpace) > fMaxSize;
421		}
422
423	<	//__________________________________________________________________________________________________
423	>	//--------------------------------------------------------------------------------------------------
424		void TreeWriter::OpenFile()
425		{
426		// Open the file and attach the tree.
#	Line 336 | Line 451 | void TreeWriter::OpenFile()
451		fIsInit = kTRUE;
452		}
453
454	<	//__________________________________________________________________________________________________
454	>	//--------------------------------------------------------------------------------------------------
455		void TreeWriter::Print(Option_t *option) const
456		{
457		// Print the contents of the tree writer.
#	Line 358 | Line 473 | void TreeWriter::Print(Option_t *option)
473		<< (GetEntries() == 1 ? " event" : " events") << endl;
474		}
475
476	<	//-------------------------------------------------------------------------------------------------
476	>	//--------------------------------------------------------------------------------------------------
477		void TreeWriter::SetAutoFill(const char *tn, Bool_t b)
478		{
479		// Set auto-fill mode of tree with given name.
480
481	<	if (fTrees.GetEntries()==0) return;
481	>	if (fTrees.GetEntries()==0)
482	>	return;
483
484		MyTree *mt = GetMyTree(tn);
485	<	if (!mt) return;
485	>	if (!mt)
486	>	return;
487
488		mt->SetAutoFill(b);
489		}
490
491	<	//__________________________________________________________________________________________________
491	>	//--------------------------------------------------------------------------------------------------
492	>	void TreeWriter::SetMaxSize(Long64_t s)
493	>	{
494	>	// Set maximum file size. Check if this exceeds the ROOT file size and if,
495	>	// print a warning and adjust it.
496	>
497	>	if (s>=(Long64_t)(0.99 * TTree::GetMaxTreeSize())) {
498	>	Long64_t news = (Long64_t)(s/0.99);
499	>	Warning("SetMaxSize", "Maximum tree size increased from %lld to %lld",
500	>	TTree::GetMaxTreeSize(), news);
501	>	TTree::SetMaxTreeSize(news);
502	>	}
503	>
504	>	fMaxSize=s;
505	>	}
506	>
507	>	//--------------------------------------------------------------------------------------------------
508		void TreeWriter::StoreObject(const TObject *obj)
509		{
510	<	// Store object next to tree in file. Used to store the
378	<	// settings of how the tree was created.
510	>	// Store object next to tree in file. Used to store the settings of how the tree was created.
511
512		if (!fIsInit) {
513		Fatal("StoreObject", "Tree is not created, call create first!");
#	Line 389 | Line 521 | void TreeWriter::StoreObject(const TObje
521
522		fFile->WriteTObject(obj,obj->GetName(),"WriteDelete");
523		}
524	+
525	+	//__________________________________________________________________________________________________
526	+	void TreeWriter::Terminate()
527	+	{
528	+	// Terminate tree file writing.
529	+
530	+	if (fIsInit) {
531	+	CloseFile();
532	+	}
533	+
534	+	TDirectory::TContext context(0);
535	+	fTrees.Clear();
536	+	}

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