Hello Rene, On Thu, 25 Mar 2004, Rene Brun wrote: > Could you specify which version of ROOT? > In case you use an old version, could you try with 3.10/02 or better 4.00/03? I am using root3.05/02, but I checked, the same happens in 3.10. > Could you send a small tar file with teh strict minimum to reproduce this > problem? I attached the code to reproduce the problem. 1) First you should generate the file with digits of version 1, i.e. #define STOREFULLINFO in the TestDigit.h is commented: ~/NA60/test > root ******************************************* * * * W E L C O M E to R O O T * * * * Version 3.05/02 11 February 2003 * * * * You are welcome to visit our Web site * * http://root.cern.ch * * * ******************************************* .. root [0] .L TestDigit.cxx++ Info in <TUnixSystem::ACLiC>: creating shared library /home/shahoian/NA60/test/./TestDigit_cxx.so root [1] TestGen("test0.root"); // THIS WILL GENERATE DIGITS OF VERSION 1 Event 0 Col# 0 Row# 18 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | Col# 10 Row# 4 | Digit# 0 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | Col# 11 Row# 9 | Digit# 1 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | Col# 12 Row# 1 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | Event 1 Col# 100 Row# 30 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | Col# 110 Row# 18 | Digit# 0 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | Col# 111 Row# 30 | Digit# 1 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | Col# 112 Row# 7 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | Col# 113 Row# 26 | Digit# 3 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | root [2] .q 2) Uncomment #define STOREFULLINFO in the TestDigit.h, read just generated digits and store them in a new file, as a digits of version 2 ~/NA60/test > root ... root [0] .L TestDigit.cxx++ Info in <TUnixSystem::ACLiC>: creating shared library /home/shahoian/NA60/test/./TestDigit_cxx.so root [1] TestReadWrite("test0.root","test1.root"); // THIS WILL CONVERT THE FILE WITH DIGITS_V1 TO FILE OF DIGITS_V2 Event 0 Col# 0 Row# 18 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 10 Row# 4 | Digit# 0 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 11 Row# 9 | Digit# 1 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 12 Row# 1 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Event 1 Col# 100 Row# 30 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 110 Row# 18 | Digit# 0 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 111 Row# 30 | Digit# 1 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 112 Row# 7 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 113 Row# 26 | Digit# 3 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 root [2] // // as you see, the reading of v1 digits with the code of v2 works fine, we recover old values. The problem // arises when we try to read just stored digits. If it is done in the same root session, we get: // root [2] TestRead("test1.root") Event 0 Error in <TBuffer::CheckByteCount>: object of class TClonesArray read too few bytes: 71 instead of 87 Warning in <TBuffer::CheckByteCount>: TClonesArray::Streamer() not in sync with data on file, fix Streamer() Error in <TBuffer::CheckByteCount>: object of class TClonesArray read too few bytes: 123 instead of 171 Warning in <TBuffer::CheckByteCount>: TClonesArray::Streamer() not in sync with data on file, fix Streamer() Col# 0 Row# 18 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 0 Row# 4 | Digit# 0 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 0 Row# 9 | Digit# 1 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 0 Row# 1 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Event 1 Error in <TBuffer::CheckByteCount>: object of class TClonesArray read too few bytes: 71 instead of 87 Warning in <TBuffer::CheckByteCount>: TClonesArray::Streamer() not in sync with data on file, fix Streamer() Error in <TBuffer::CheckByteCount>: object of class TClonesArray read too few bytes: 149 instead of 213 Warning in <TBuffer::CheckByteCount>: TClonesArray::Streamer() not in sync with data on file, fix Streamer() Col# 0 Row# 30 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 0 Row# 18 | Digit# 0 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 0 Row# 30 | Digit# 1 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 0 Row# 7 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 0 Row# 26 | Digit# 3 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 root [3] .q 3) if the just converted digits are read from new root session, we get: ~/NA60/test > root root [0] .L TestDigit.cxx++ root [1] TestRead("test1.root") Event 0 Col# 0 Row# 18 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 10 Row# 4 | Digit# 0 of Sensor 1 | In Clus# 9, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 11 Row# 1 | Digit# 1 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 12 Row# -1 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Event 1 Col# 100 Row# 30 | Digit# 0 of Sensor 0 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 110 Row# 18 | Digit# 0 of Sensor 1 | In Clus# 30, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 111 Row# 7 | Digit# 1 of Sensor 1 | In Clus# 26, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 112 Row# -1 | Digit# 2 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 Col# 113 Row# -1 | Digit# 3 of Sensor 1 | In Clus# -1, Track Ptr: (nil) | X: 0.0 Y: 0.0 Z: 0.0 E: 0.0 The data member fI of NaDigit1D class is corrupted: it looks like due to the wrong offsets it mixes the fCluster member (which in this example should be always -1) and fI. Best regards, Ruben -- > Ruben Shahoyan wrote: > > > > Hello, > > we have a following problem with I/O of the objects having streamer > > versions: > > the base object for na60 digits is > > > > class NaDigit1D : > > public TObject { > > ... > > protected: > > Int_t fI; // Value of the digit > > Int_t fCluster; // Number of the Cluster to which it is attached > > TArrayI* fTracks; // Optional array of references on track > > // > > #ifdef STOREFULLINFO > > Float_t fXYZE[4]; > > ClassDef(NaDigit1D,2) // Base class for 1Dim digits with FULL TRACKING INFO > > #else > > ClassDef(NaDigit1D,1) // Base class for 1Dim digits > > #endif > > }; > > > > the #define STOREFULLINFO in the NaDigit1D.h allows us to switch from > > version 1 to more complete version 2. > > > > The default constructor is: > > NaDigit1D::NaDigit1D() > > { > > fI = -1; > > fCluster = -1; > > fTracks = 0; > > #ifdef STOREFULLINFO > > fXYZE[0]=fXYZE[1]=fXYZE[2]=fXYZE[3]=0.0; > > #endif > > // > > } > > > > The I/O works fine when I read/rewrite the digits of some version with the > > code compiled with the corresponding version of the class. > > > > But we have large amount of data written with the version 1 (i.e. w/o > > fXYZE member) which we need to read and store after some processing as a > > digits of version 2 (with fXYZE member). The code compiled with > > #define STOREFULLINFO reads w/o problem the old digits of version 1, > > but when I sotre them again, and try to read them back as a digits of > > version 2, they appear to be completely corrupted. > > > > Here is what I get with gDebug = 1 for reading of the class NaPixDigit, > > which derives from NaDigit1D by adding a new member fCol. > > > > (1) Reading the NaDigit1D of version 1 with the class compiled for version 2 > > ... > > ====>Rebuilding TStreamerInfo for class: NaPixDigit, version: 1 > > ====>Rebuilding TStreamerInfo for class: NaDigit1D, version: 1 > > StreamerInfo for class: NaDigit1D, version=1 > > TObject BASE offset= 0 type=66 Basic ROOT object > > Int_t fI offset= 12 type= 3 Value of the digit > > Int_t fCluster offset= 16 type= 3 Number of the Cluster to which it is attached > > TArrayI* fTracks offset= 20 type=69 Optional array of references on track > > i= 0, TObject type= 66, offset= 0, len=1, method=0 > > i= 1, fI type= 3, offset= 12, len=1, method=0 > > i= 2, fCluster type= 3, offset= 16, len=1, method=0 > > i= 3, fTracks type= 69, offset= 20, len=1, method=1074526452 > > > > StreamerInfo for class: NaPixDigit, version=1 > > NaDigit1D BASE offset= 0 type= 0 Base class for 1Dim digits > > Int_t fCol offset= 40 type= 3 Column of the pixel (NaDigit1D::fI is row) > > i= 0, NaDigit1D type= 0, offset= 0, len=1, method=161037840 > > i= 1, fCol type= 3, offset= 40, len=1, method=0 > > > > .... > > root [10] gVerTel->GetSensor(0)->GetDigit(2)->Dump() > > ==>Dumping object at:a273f80, name=NaPixDigit, class=NaPixDigit > > fCol 0 Column of the pixel (NaDigit1D::fI is row) > > fI 147 Value of the digit > > fCluster 2 Number of the Cluster to which it is attached > > *fTracks ->0 Optional array of references on track > > fXYZE[4] 0 > > fUniqueID 131185 object unique identifier > > fBits 50331648 bit field status word > > > > Here everything is correct. Now I store these digits and try to > > (2) read them back with the same code of NaDigit1D version 2: > > > > ====>Rebuilding TStreamerInfo for class: NaPixDigit, version: 1 > > Creating StreamerInfo for class: NaDigit1D, version: 2 > > > > StreamerInfo for class: NaDigit1D, version=2 > > TObject BASE offset= 0 type=66 Basic ROOT object > > Int_t fI offset= 12 type= 3 Value of the digit > > Int_t fCluster offset= 16 type= 3 Number of the Cluster to which it is attached > > TArrayI* fTracks offset= 20 type=69 Optional array of references on track > > Float_t fXYZE[4] offset= 24 type=25 > > i= 0, TObject type= 66, offset= 0, len=1, method=0 > > i= 1, fI type= 23, offset= 12, len=2, method=0 > > i= 2, fTracks type= 69, offset= 20, len=1, method=1074526452 > > i= 3, fXYZE type= 25, offset= 24, len=4, method=0 > > > > StreamerInfo for class: NaPixDigit, version=1 > > NaDigit1D BASE offset= 0 type= 0 Base class for 1Dim digits > > Int_t fCol offset= 40 type= 3 Column of the pixel (NaDigit1D::fI is row) > > i= 0, NaDigit1D type= 0, offset= 0, len=1, method=160981416 > > i= 1, fCol type= 3, offset= 40, len=1, method=0 > > > > ... > > root [9] gVerTel->GetSensor(0)->GetDigit(2)->Dump() > > ==>Dumping object at:a5c2f38, name=NaPixDigit, class=NaPixDigit > > > > fCol 0 Column of the pixel (NaDigit1D::fI is row) > > fI 178 Value of the digit > > fCluster 185 Number of the Cluster to which it is attached > > *fTracks ->0 Optional array of references on track > > fXYZE[4] 0 > > fUniqueID 131185 object unique identifier > > fBits 50331648 bit field status word > > > > The same digit now has completely different values, and the StreamerInfo > > also looks different: in the output (1) it had a table entry for > > i= 2, fCluster type= 3, offset= 16, len=1, method=0 > > > > while in the output (2) it has disappeared, which apparently leads to > > misalignment during the reading. > > > > Have I done something wrong or there is a problem in the schema evolution? > > > > Ruben Shahoyan >
This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:06 MET