[u/mrichter/AliRoot.git] / RAW / AliRawDB.cxx

// @(#)alimdc:$Name$:$Id$
// Author: Fons Rademakers  26/11/99

/**************************************************************************
 * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// AliRawDB                                                             //
//                                                                      //
//////////////////////////////////////////////////////////////////////////

#include <errno.h>

#include <TSystem.h>
#include <TKey.h>

#ifdef ALI_DATE
#include "event.h"
#endif

#include "AliESD.h"
#include "AliRawEvent.h"
#include "AliRawEventHeader.h"
#include "AliStats.h"

#include "AliRawDB.h"


ClassImp(AliRawDB)


//______________________________________________________________________________
AliRawDB::AliRawDB(AliRawEvent *event,
		   AliESD *esd, 
		   Int_t compress,
                   const char* fileName) :
  fRawDB(NULL),
  fTree(NULL),
  fEvent(event),
  fESDTree(NULL),
  fESD(esd),
  fCompress(compress),
  fMaxSize(-1),
  fFS1(""),
  fFS2(""),
  fDeleteFiles(kFALSE),
  fStop(kFALSE)
{
   // Create a new raw DB

   // Consistency check with DATE header file
#ifdef ALI_DATE
   if (fEvent->GetHeader()->HeaderSize() != EVENT_HEAD_BASE_SIZE) {
      Error("AliRawDB", "inconsistency between DATE and AliRawEvent headers");
      MakeZombie();
      return;
   }
#endif

   if (fileName) {
      if (!Create(fileName))
         MakeZombie();
   }
}

//______________________________________________________________________________
AliRawDB::AliRawDB(const AliRawDB& rawDB): TObject(rawDB)
{
// copy constructor

  Fatal("AliRawDB", "copy constructor not implemented");
}

//______________________________________________________________________________
AliRawDB& AliRawDB::operator = (const AliRawDB& /*rawDB*/)
{
// assignment operator

  Fatal("operator =", "assignment operator not implemented");
  return *this;
}

//______________________________________________________________________________
Bool_t AliRawDB::FSHasSpace(const char *fs) const
{
   // Check for at least fMaxSize bytes of free space on the file system.
   // If the space is not available return kFALSE, kTRUE otherwise.

   Long_t id, bsize, blocks, bfree;

   if (gSystem->GetFsInfo(fs, &id, &bsize, &blocks, &bfree) == 1) {
      Error("FSHasSpace", "could not stat file system %s", fs);
      return kFALSE;
   }

   // Leave 5 percent of diskspace free
   Double_t avail = Double_t(bfree) * 0.95;
   if (avail*bsize > fMaxSize)
      return kTRUE;

   Warning("FSHasSpace", "no space on file system %s", fs);
   return kFALSE;
}

//______________________________________________________________________________
const char *AliRawDB::GetFileName() const
{
   // Return filename based on hostname and date and time. This will make
   // each file unique. Also makes sure (via FSHasSpace()) that there is
   // enough space on the file system to store the file. Returns 0 in
   // case of error or interrupt signal.

   static TString fname;
   static Bool_t  fstoggle = kFALSE;

   TString fs = fstoggle ? fFS2 : fFS1;
   TDatime dt;

   TString hostname = gSystem->HostName();
   Int_t pos;
   if ((pos = hostname.Index(".")) != kNPOS)
      hostname.Remove(pos);

   if (!FSHasSpace(fs)) {
      while (1) {
         fstoggle = !fstoggle;
         fs = fstoggle ? fFS2 : fFS1;
         if (FSHasSpace(fs)) break;
         Info("GetFileName", "sleeping 30 seconds before retrying...");
         gSystem->Sleep(30000);   // sleep for 30 seconds
         if (fStop) return 0;
      }
   }

   fname = fs + "/" + hostname + "_";
   fname += dt.GetDate();
   fname += "_";
   fname += dt.GetTime();
   fname += ".root";

   fstoggle = !fstoggle;

   return fname;
}

//______________________________________________________________________________
void AliRawDB::SetFS(const char* fs1, const char* fs2)
{
// set the file system location

  fFS1 = fs1;
  if (fs1 && !fFS1.Contains(":")) {
    gSystem->ResetErrno();
    gSystem->MakeDirectory(fs1);
    if (gSystem->GetErrno() && gSystem->GetErrno() != EEXIST) {
      SysError("SetFS", "mkdir %s", fs1);
    }
  }

  fFS2 = fs2;
  if (fs2) {
    gSystem->ResetErrno();
    gSystem->MakeDirectory(fs2);
    if (gSystem->GetErrno() && gSystem->GetErrno() != EEXIST) {
      SysError("SetFS", "mkdir %s", fs2);
    }
  }
}

//______________________________________________________________________________
Bool_t AliRawDB::Create(const char* fileName)
{
   // Create a new raw DB.

   const Int_t kMaxRetry = 200;
   const Int_t kMaxSleep = 1;      // seconds
   const Int_t kMaxSleepLong = 10; // seconds
   Int_t retry = 0;

again:
   if (fStop) return kFALSE;

   const char *fname = fileName;
   if (!fname) fname = GetFileName();
   if (!fname) {
      Error("Create", "error getting raw DB file name");
      return kFALSE;
   }

   retry++;

   fRawDB = TFile::Open(fname, GetOpenOption(),
                        Form("ALICE MDC%d raw DB", kMDC), fCompress,
                        GetNetopt());
   if (!fRawDB) {
      if (retry < kMaxRetry) {
         Warning("Create", "failure to open file, sleeping %d %s before retrying...",
                 kMaxSleep, kMaxSleep==1 ? "second" : "seconds");
         gSystem->Sleep(kMaxSleep*1000);
         goto again;
      }
      Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry);
      return kFALSE;
   }
   if (retry > 1)
      Warning("Create", "succeeded to open file after %d retries", retry);

   if (fRawDB->IsZombie()) {
      if (fRawDB->GetErrno() == ENOSPC ||
          fRawDB->GetErrno() == 1018   ||   // SECOMERR
          fRawDB->GetErrno() == 1027) {     // SESYSERR
         fRawDB->ResetErrno();
         delete fRawDB;
         Warning("Create", "file is a zombie (no space), sleeping %d %s before retrying...",
                 kMaxSleepLong, kMaxSleepLong==1 ? "second" : "seconds");
         gSystem->Sleep(kMaxSleepLong*1000);   // sleep 10 seconds before retrying
         goto again;
      }
      Error("Create", "file %s is zombie", fname);
      fRawDB->ResetErrno();
      delete fRawDB;
      fRawDB = 0;
      if (retry < kMaxRetry) {
         Warning("Create", "file is a zombie, sleeping %d %s before retrying...",
                 kMaxSleep, kMaxSleep==1 ? "second" : "seconds");
         gSystem->Sleep(kMaxSleep*1000);
         goto again;
      }
      Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry);
      return kFALSE;
   }

   // Create raw data TTree
   MakeTree();

   return kTRUE;
}

//______________________________________________________________________________
void AliRawDB::MakeTree()
{
   // Create ROOT Tree object container.

   fTree = new TTree("RAW", Form("ALICE MDC%d raw data tree", kMDC));
   fTree->SetAutoSave(2000000000);  // autosave when 2 Gbyte written

   Int_t bufsize = 256000;
   // splitting 29.6 MB/s, no splitting 35.3 MB/s on P4 2GHz 15k SCSI
   //Int_t split   = 1;
   Int_t split   = 0;
   fTree->Branch("rawevent", "AliRawEvent", &fEvent, bufsize, split);

   // Create tree which will contain the HLT ESD information

   if (fESD) {
     fESDTree = new TTree("esdTree", Form("ALICE MDC%d HLT ESD tree", kMDC));
     fESDTree->SetAutoSave(2000000000);  // autosave when 2 Gbyte written
     split   = 99;
     fESDTree->Branch("ESD", "AliESD", &fESD, bufsize, split);
   }

}

//______________________________________________________________________________
void AliRawDB::Close()
{
   // Close raw DB.

   if (!fRawDB) return;

   fRawDB->cd();

   // Write the tree.
   fTree->Write();
   if (fESDTree) fESDTree->Write();

   // Close DB, this also deletes the fTree
   fRawDB->Close();

   if (fDeleteFiles) {
      gSystem->Unlink(fRawDB->GetName());
      delete fRawDB;
      fRawDB = 0;
      return;
   }

   // Create semaphore to say this file is finished
   Int_t tfd = ::creat(Form("%s.done", fRawDB->GetName()), 0644);
   close(tfd);

   delete fRawDB;
   fRawDB = 0;
}

//______________________________________________________________________________
Int_t AliRawDB::Fill()
{
   // Fill the trees and return the number of written bytes

   Double_t bytes = fRawDB->GetBytesWritten();
   fTree->Fill();
   if (fESDTree) fESDTree->Fill();
   return Int_t(fRawDB->GetBytesWritten() - bytes);
}

//______________________________________________________________________________
Int_t AliRawDB::GetTotalSize()
{
   // Return the total size of the trees
  Int_t total = 0;

  {
    Int_t skey = 0;
    TDirectory *dir = fTree->GetDirectory();
    if (dir) {
      TKey *key = dir->GetKey(fTree->GetName());
      if (key) skey = key->GetKeylen();
    }
    total += skey;
    if (fTree->GetZipBytes() > 0) total += fTree->GetTotBytes();
    TBuffer b(TBuffer::kWrite,10000);
    TTree::Class()->WriteBuffer(b,fTree);
    total += b.Length();
  }

  if(fESDTree)
    {
      Int_t skey = 0;
      TDirectory *dir = fESDTree->GetDirectory();
      if (dir) {
	TKey *key = dir->GetKey(fESDTree->GetName());
	if (key) skey = key->GetKeylen();
      }
      total += skey;
      if (fESDTree->GetZipBytes() > 0) total += fESDTree->GetTotBytes();
      TBuffer b(TBuffer::kWrite,10000);
      TTree::Class()->WriteBuffer(b,fESDTree);
      total += b.Length();
    }

  return total;
}

//______________________________________________________________________________
void AliRawDB::WriteStats(AliStats* stats)
{
   // Write stats to raw DB, local run DB and global MySQL DB.

   AliRawEventHeader &header = *GetEvent()->GetHeader();

   // Write stats into RawDB
   TDirectory *ds = gDirectory;
   GetDB()->cd();
   stats->SetEvents(GetEvents());
   stats->SetLastId(header.GetRunNumber(), header.GetEventInRun());
   stats->SetFileSize(GetBytesWritten());
   stats->SetCompressionFactor(GetCompressionFactor());
   stats->SetEndTime();
   stats->Write("stats");
   ds->cd();
}

//______________________________________________________________________________
Bool_t AliRawDB::NextFile(const char* fileName)
{
   // Close te current file and open a new one.
   // Returns kFALSE in case opening failed.

   Close();

   if (!Create(fileName)) return kFALSE;
   return kTRUE;
}

//______________________________________________________________________________
Float_t AliRawDB::GetCompressionFactor() const
{
   // Return compression factor.

   if (fTree->GetZipBytes() == 0.)
      return 1.0;
   else
      return fTree->GetTotBytes()/fTree->GetZipBytes();
}
Commit	Line	Data
a197a4ce	1	// @(#)alimdc:$Name$:$Id$
	2	// Author: Fons Rademakers 26/11/99
	3
	4	/**************************************************************************
	5	* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
	6	* *
	7	* Author: The ALICE Off-line Project. *
	8	* Contributors are mentioned in the code where appropriate. *
	9	* *
	10	* Permission to use, copy, modify and distribute this software and its *
	11	* documentation strictly for non-commercial purposes is hereby granted *
	12	* without fee, provided that the above copyright notice appears in all *
	13	* copies and that both the copyright notice and this permission notice *
	14	* appear in the supporting documentation. The authors make no claims *
	15	* about the suitability of this software for any purpose. It is *
	16	* provided "as is" without express or implied warranty. *
	17	**************************************************************************/
	18
	19	//////////////////////////////////////////////////////////////////////////
	20	// //
	21	// AliRawDB //
	22	// //
	23	//////////////////////////////////////////////////////////////////////////
	24
	25	#include <errno.h>
	26
	27	#include <TSystem.h>
d21e9888	28	#include <TKey.h>
a197a4ce	29
	30	#ifdef ALI_DATE
	31	#include "event.h"
	32	#endif
	33
52f36b9b	34	#include "AliESD.h"
a197a4ce	35	#include "AliRawEvent.h"
a197a4ce	36	#include "AliRawEventHeader.h"
b7d09bb3	37	#include "AliStats.h"
a109e73e	38
a197a4ce	39	#include "AliRawDB.h"
	40
	41
	42	ClassImp(AliRawDB)
	43
	44
	45	//______________________________________________________________________________
a109e73e	46	AliRawDB::AliRawDB(AliRawEvent *event,
a109e73e	47	AliESD *esd,
e10815f1	48	Int_t compress,
	49	const char* fileName) :
	50	fRawDB(NULL),
	51	fTree(NULL),
	52	fEvent(event),
	53	fESDTree(NULL),
	54	fESD(esd),
	55	fCompress(compress),
	56	fMaxSize(-1),
	57	fFS1(""),
	58	fFS2(""),
	59	fDeleteFiles(kFALSE),
	60	fStop(kFALSE)
a197a4ce	61	{
e10815f1	62	// Create a new raw DB
a197a4ce	63
	64	// Consistency check with DATE header file
	65	#ifdef ALI_DATE
	66	if (fEvent->GetHeader()->HeaderSize() != EVENT_HEAD_BASE_SIZE) {
	67	Error("AliRawDB", "inconsistency between DATE and AliRawEvent headers");
	68	MakeZombie();
	69	return;
	70	}
	71	#endif
	72
e10815f1	73	if (fileName) {
e10815f1	74	if (!Create(fileName))
a197a4ce	75	MakeZombie();
	76	}
	77	}
	78
	79	//______________________________________________________________________________
	80	AliRawDB::AliRawDB(const AliRawDB& rawDB): TObject(rawDB)
	81	{
	82	// copy constructor
	83
	84	Fatal("AliRawDB", "copy constructor not implemented");
	85	}
	86
	87	//______________________________________________________________________________
	88	AliRawDB& AliRawDB::operator = (const AliRawDB& /rawDB/)
	89	{
	90	// assignment operator
	91
	92	Fatal("operator =", "assignment operator not implemented");
	93	return *this;
	94	}
	95
	96	//______________________________________________________________________________
	97	Bool_t AliRawDB::FSHasSpace(const char *fs) const
	98	{
	99	// Check for at least fMaxSize bytes of free space on the file system.
	100	// If the space is not available return kFALSE, kTRUE otherwise.
	101
	102	Long_t id, bsize, blocks, bfree;
	103
	104	if (gSystem->GetFsInfo(fs, &id, &bsize, &blocks, &bfree) == 1) {
	105	Error("FSHasSpace", "could not stat file system %s", fs);
	106	return kFALSE;
	107	}
	108
	109	// Leave 5 percent of diskspace free
	110	Double_t avail = Double_t(bfree) * 0.95;
	111	if (avail*bsize > fMaxSize)
	112	return kTRUE;
	113
	114	Warning("FSHasSpace", "no space on file system %s", fs);
	115	return kFALSE;
	116	}
	117
	118	//______________________________________________________________________________
	119	const char *AliRawDB::GetFileName() const
	120	{
	121	// Return filename based on hostname and date and time. This will make
	122	// each file unique. Also makes sure (via FSHasSpace()) that there is
	123	// enough space on the file system to store the file. Returns 0 in
	124	// case of error or interrupt signal.
	125
	126	static TString fname;
	127	static Bool_t fstoggle = kFALSE;
	128
e10815f1	129	TString fs = fstoggle ? fFS2 : fFS1;
a197a4ce	130	TDatime dt;
	131
	132	TString hostname = gSystem->HostName();
	133	Int_t pos;
	134	if ((pos = hostname.Index(".")) != kNPOS)
	135	hostname.Remove(pos);
	136
	137	if (!FSHasSpace(fs)) {
	138	while (1) {
	139	fstoggle = !fstoggle;
e10815f1	140	fs = fstoggle ? fFS2 : fFS1;
a197a4ce	141	if (FSHasSpace(fs)) break;
	142	Info("GetFileName", "sleeping 30 seconds before retrying...");
	143	gSystem->Sleep(30000); // sleep for 30 seconds
e10815f1	144	if (fStop) return 0;
a197a4ce	145	}
	146	}
	147
	148	fname = fs + "/" + hostname + "_";
	149	fname += dt.GetDate();
	150	fname += "_";
	151	fname += dt.GetTime();
	152	fname += ".root";
	153
	154	fstoggle = !fstoggle;
	155
	156	return fname;
	157	}
	158
	159	//______________________________________________________________________________
e10815f1	160	void AliRawDB::SetFS(const char* fs1, const char* fs2)
	161	{
	162	// set the file system location
	163
	164	fFS1 = fs1;
	165	if (fs1 && !fFS1.Contains(":")) {
	166	gSystem->ResetErrno();
	167	gSystem->MakeDirectory(fs1);
	168	if (gSystem->GetErrno() && gSystem->GetErrno() != EEXIST) {
	169	SysError("SetFS", "mkdir %s", fs1);
	170	}
	171	}
	172
	173	fFS2 = fs2;
	174	if (fs2) {
	175	gSystem->ResetErrno();
	176	gSystem->MakeDirectory(fs2);
	177	if (gSystem->GetErrno() && gSystem->GetErrno() != EEXIST) {
	178	SysError("SetFS", "mkdir %s", fs2);
	179	}
	180	}
	181	}
	182
	183	//______________________________________________________________________________
	184	Bool_t AliRawDB::Create(const char* fileName)
a197a4ce	185	{
	186	// Create a new raw DB.
	187
	188	const Int_t kMaxRetry = 200;
	189	const Int_t kMaxSleep = 1; // seconds
	190	const Int_t kMaxSleepLong = 10; // seconds
	191	Int_t retry = 0;
	192
	193	again:
e10815f1	194	if (fStop) return kFALSE;
a197a4ce	195
e10815f1	196	const char *fname = fileName;
e10815f1	197	if (!fname) fname = GetFileName();
a197a4ce	198	if (!fname) {
	199	Error("Create", "error getting raw DB file name");
	200	return kFALSE;
	201	}
	202
	203	retry++;
	204
	205	fRawDB = TFile::Open(fname, GetOpenOption(),
e10815f1	206	Form("ALICE MDC%d raw DB", kMDC), fCompress,
a197a4ce	207	GetNetopt());
	208	if (!fRawDB) {
	209	if (retry < kMaxRetry) {
	210	Warning("Create", "failure to open file, sleeping %d %s before retrying...",
	211	kMaxSleep, kMaxSleep==1 ? "second" : "seconds");
	212	gSystem->Sleep(kMaxSleep*1000);
	213	goto again;
	214	}
	215	Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry);
	216	return kFALSE;
	217	}
	218	if (retry > 1)
	219	Warning("Create", "succeeded to open file after %d retries", retry);
	220
	221	if (fRawDB->IsZombie()) {
	222	if (fRawDB->GetErrno() == ENOSPC \|\|
	223	fRawDB->GetErrno() == 1018 \|\| // SECOMERR
	224	fRawDB->GetErrno() == 1027) { // SESYSERR
	225	fRawDB->ResetErrno();
	226	delete fRawDB;
	227	Warning("Create", "file is a zombie (no space), sleeping %d %s before retrying...",
	228	kMaxSleepLong, kMaxSleepLong==1 ? "second" : "seconds");
	229	gSystem->Sleep(kMaxSleepLong*1000); // sleep 10 seconds before retrying
	230	goto again;
	231	}
	232	Error("Create", "file %s is zombie", fname);
	233	fRawDB->ResetErrno();
	234	delete fRawDB;
	235	fRawDB = 0;
	236	if (retry < kMaxRetry) {
	237	Warning("Create", "file is a zombie, sleeping %d %s before retrying...",
	238	kMaxSleep, kMaxSleep==1 ? "second" : "seconds");
	239	gSystem->Sleep(kMaxSleep*1000);
	240	goto again;
	241	}
	242	Error("Create", "failure to open file %s after %d tries", fname, kMaxRetry);
	243	return kFALSE;
	244	}
	245
	246	// Create raw data TTree
	247	MakeTree();
	248
	249	return kTRUE;
	250	}
	251
	252	//______________________________________________________________________________
	253	void AliRawDB::MakeTree()
	254	{
	255	// Create ROOT Tree object container.
	256
e10815f1	257	fTree = new TTree("RAW", Form("ALICE MDC%d raw data tree", kMDC));
a197a4ce	258	fTree->SetAutoSave(2000000000); // autosave when 2 Gbyte written
	259
	260	Int_t bufsize = 256000;
	261	// splitting 29.6 MB/s, no splitting 35.3 MB/s on P4 2GHz 15k SCSI
	262	//Int_t split = 1;
	263	Int_t split = 0;
	264	fTree->Branch("rawevent", "AliRawEvent", &fEvent, bufsize, split);
a109e73e	265
a109e73e	266	// Create tree which will contain the HLT ESD information
a109e73e	267
e10815f1	268	if (fESD) {
	269	fESDTree = new TTree("esdTree", Form("ALICE MDC%d HLT ESD tree", kMDC));
	270	fESDTree->SetAutoSave(2000000000); // autosave when 2 Gbyte written
	271	split = 99;
	272	fESDTree->Branch("ESD", "AliESD", &fESD, bufsize, split);
	273	}
a109e73e	274
a197a4ce	275	}
	276
	277	//______________________________________________________________________________
	278	void AliRawDB::Close()
	279	{
	280	// Close raw DB.
	281
	282	if (!fRawDB) return;
	283
	284	fRawDB->cd();
	285
	286	// Write the tree.
	287	fTree->Write();
e10815f1	288	if (fESDTree) fESDTree->Write();
a197a4ce	289
	290	// Close DB, this also deletes the fTree
	291	fRawDB->Close();
	292
e10815f1	293	if (fDeleteFiles) {
a197a4ce	294	gSystem->Unlink(fRawDB->GetName());
	295	delete fRawDB;
	296	fRawDB = 0;
	297	return;
	298	}
	299
	300	// Create semaphore to say this file is finished
	301	Int_t tfd = ::creat(Form("%s.done", fRawDB->GetName()), 0644);
	302	close(tfd);
	303
	304	delete fRawDB;
	305	fRawDB = 0;
	306	}
	307
e10815f1	308	//______________________________________________________________________________
	309	Int_t AliRawDB::Fill()
	310	{
	311	// Fill the trees and return the number of written bytes
	312
	313	Double_t bytes = fRawDB->GetBytesWritten();
	314	fTree->Fill();
	315	if (fESDTree) fESDTree->Fill();
	316	return Int_t(fRawDB->GetBytesWritten() - bytes);
	317	}
	318
d21e9888	319	//______________________________________________________________________________
	320	Int_t AliRawDB::GetTotalSize()
	321	{
	322	// Return the total size of the trees
	323	Int_t total = 0;
	324
	325	{
	326	Int_t skey = 0;
	327	TDirectory *dir = fTree->GetDirectory();
	328	if (dir) {
	329	TKey *key = dir->GetKey(fTree->GetName());
	330	if (key) skey = key->GetKeylen();
	331	}
	332	total += skey;
	333	if (fTree->GetZipBytes() > 0) total += fTree->GetTotBytes();
	334	TBuffer b(TBuffer::kWrite,10000);
	335	TTree::Class()->WriteBuffer(b,fTree);
	336	total += b.Length();
	337	}
	338
	339	if(fESDTree)
	340	{
	341	Int_t skey = 0;
	342	TDirectory *dir = fESDTree->GetDirectory();
	343	if (dir) {
	344	TKey *key = dir->GetKey(fESDTree->GetName());
	345	if (key) skey = key->GetKeylen();
	346	}
	347	total += skey;
	348	if (fESDTree->GetZipBytes() > 0) total += fESDTree->GetTotBytes();
	349	TBuffer b(TBuffer::kWrite,10000);
	350	TTree::Class()->WriteBuffer(b,fESDTree);
	351	total += b.Length();
	352	}
	353
	354	return total;
	355	}
	356
b7d09bb3	357	//______________________________________________________________________________
	358	void AliRawDB::WriteStats(AliStats* stats)
	359	{
	360	// Write stats to raw DB, local run DB and global MySQL DB.
	361
	362	AliRawEventHeader &header = *GetEvent()->GetHeader();
	363
	364	// Write stats into RawDB
	365	TDirectory *ds = gDirectory;
	366	GetDB()->cd();
	367	stats->SetEvents(GetEvents());
	368	stats->SetLastId(header.GetRunNumber(), header.GetEventInRun());
	369	stats->SetFileSize(GetBytesWritten());
	370	stats->SetCompressionFactor(GetCompressionFactor());
	371	stats->SetEndTime();
	372	stats->Write("stats");
	373	ds->cd();
	374	}
	375
a197a4ce	376	//______________________________________________________________________________
e10815f1	377	Bool_t AliRawDB::NextFile(const char* fileName)
a197a4ce	378	{
	379	// Close te current file and open a new one.
	380	// Returns kFALSE in case opening failed.
	381
	382	Close();
	383
e10815f1	384	if (!Create(fileName)) return kFALSE;
a197a4ce	385	return kTRUE;
	386	}
	387
	388	//______________________________________________________________________________
	389	Float_t AliRawDB::GetCompressionFactor() const
	390	{
	391	// Return compression factor.
	392
	393	if (fTree->GetZipBytes() == 0.)
	394	return 1.0;
	395	else
	396	return fTree->GetTotBytes()/fTree->GetZipBytes();
	397	}