CMSSW Reference Manual

FileReaderSPNewFormat::FileReaderSPNewFormat ( )

Definition at line 10 of file FileReaderSPNewFormat.cc.

References header, pointer, and trailer.

00011 {
00012   pointer = 0;
00013   trailer[0] = 0xf000;
00014   trailer[1] = 0xf07f;
00015   trailer[2] = 0xf000;
00016   trailer[3] = 0xf000;
00017   trailer[4] = 0xe000;
00018   trailer[5] = 0xe000;
00019   trailer[6] = 0xe000;
00020   trailer[7] = 0xe000;
00021 
00022   header[0] = 0x9000;
00023   header[1] = 0x9000;
00024   header[2] = 0x9000;
00025   header[3] = 0x9000;
00026   header[4] = 0xa000;
00027   header[5] = 0xa000;
00028   header[6] = 0xa000;
00029   header[7] = 0xa000;
00030 }

virtual FileReaderSPNewFormat::~FileReaderSPNewFormat ( ) [inline, virtual]

Definition at line 12 of file FileReaderSPNewFormat.h.

00012 {}

int FileReaderSPNewFormat::chunkSize ( ) [protected, virtual]

How many bytes to read at a time.

Implements SPReader.

Definition at line 36 of file FileReaderSPNewFormat.cc.

Referenced by readSP().

00036                                      {
00037   // The smallest piece of the data format 
00038   // is 64 bits so read in that amount.
00039   return sizeof(long long);
00040 }

void FileReaderSPNewFormat::Configure ( ) [virtual]

Reimplemented from SPReader.

Definition at line 32 of file FileReaderSPNewFormat.cc.

00032                                       {
00033 }

virtual int FileReaderSPNewFormat::disableBlock ( ) [inline, virtual]

Implements SPReader.

Definition at line 17 of file FileReaderSPNewFormat.h.

00017 {return 0;}

virtual int FileReaderSPNewFormat::enableBlock ( ) [inline, virtual]

Implements SPReader.

Definition at line 16 of file FileReaderSPNewFormat.h.

00016 {return 0;}

virtual int FileReaderSPNewFormat::endBlockRead ( ) [inline, virtual]

Implements SPReader.

Definition at line 18 of file FileReaderSPNewFormat.h.

00018 {return 0;}

unsigned FileReaderSPNewFormat::findTrailer1	(	const unsigned short *	buf,
		unsigned	length
	)			`[protected]`

Definition at line 100 of file FileReaderSPNewFormat.cc.

References isTrailer1().

Referenced by readSP().

00101 {
00102   unsigned short* itr = const_cast<unsigned short*>(buf);
00103 
00104   unsigned pos = 0;
00105    
00106   while( itr + 3 <= buf + length )
00107     {
00108       if(isTrailer1(itr)) pos = (unsigned)itr; 
00109       ++itr;
00110     }
00111   
00112   return pos;
00113 }

unsigned FileReaderSPNewFormat::findTrailer2	(	const unsigned short *	buf,
		unsigned	length
	)			`[protected]`

Definition at line 115 of file FileReaderSPNewFormat.cc.

References isTrailer2().

Referenced by readSP().

00116 {
00117   unsigned short* itr = const_cast<unsigned short*>(buf);
00118 
00119   unsigned pos = 0;
00120  
00121   while( itr + 3 <= buf + length )
00122     {
00123       if(isTrailer2(itr)) pos = (unsigned)itr; // I hate to brute force this but I had to :-(
00124       ++itr;
00125     }
00126   
00127   return pos; 
00128 }

bool FileReaderSPNewFormat::hasTrailer	(	const unsigned short *	buf,
		unsigned	length
	)			`[protected]`

Definition at line 151 of file FileReaderSPNewFormat.cc.

References isTrailer1(), and isTrailer2().

Referenced by readSP().

00152 {
00153   return (isTrailer1(buf + length - 8) && isTrailer2(buf + length - 4));
00154 }

bool FileReaderSPNewFormat::isTrailer1 ( const unsigned short * buf ) [protected]

Definition at line 130 of file FileReaderSPNewFormat.cc.

References HLT_VtxMuL3::result, and trailer.

Referenced by findTrailer1(), and hasTrailer().

00131 {
00132   bool result = false;
00133   result = (trailer[0] & buf[0]) == trailer[0];
00134   result = (trailer[1] & buf[1]) == trailer[1];
00135   result = (trailer[2] & buf[2]) == trailer[2];
00136   result = (trailer[3] & buf[3]) == trailer[3];
00137  
00138   return result;
00139 }

bool FileReaderSPNewFormat::isTrailer2 ( const unsigned short * buf ) [protected]

Definition at line 141 of file FileReaderSPNewFormat.cc.

References HLT_VtxMuL3::result, and trailer.

Referenced by findTrailer2(), and hasTrailer().

00142 {
00143   bool result = false;
00144   result = (trailer[4] & buf[0]) == trailer[4];
00145   result = (trailer[5] & buf[1]) == trailer[5];
00146   result = (trailer[6] & buf[2]) == trailer[6];
00147   result = (trailer[7] & buf[3]) == trailer[7];
00148   return result;
00149 }

int FileReaderSPNewFormat::readSP	(	unsigned short **	buf,
		const bool	debug = `false`
	)			`[virtual]`

assumes fd_schar has been set

Implements SPReader.

Definition at line 43 of file FileReaderSPNewFormat.cc.

References a, chunkSize(), counter(), event(), SPReader::fd_schar, findTrailer1(), findTrailer2(), hasTrailer(), pointer, SiStripLorentzAngle_cfi::read, and trailer.

00044 {
00045   unsigned short a[50000];
00046   int bytes_read=0;
00047   unsigned trailer_pos;
00048   unsigned counter = 0;
00049 
00050   do
00051     {
00052       if(pointer == 0)
00053         {
00054           bytes_read = read(fd_schar, a, chunkSize());  //read 1 chunk
00055           counter += bytes_read;
00056           pointer += counter;
00057           if(bytes_read != chunkSize())
00058             {
00059               edm::LogInfo("FileReaderSPNewFormat") << "Reached end of file.";
00060               return 0; // we can safely return zero since an event size less than one chunk is useless.
00061             }     
00062         }
00063       else
00064         {
00065           bytes_read = read(fd_schar, a + counter/sizeof(short), chunkSize());
00066           counter += bytes_read;
00067           pointer += counter;
00068           if(bytes_read != chunkSize())
00069             {
00070               edm::LogInfo("FileReaderSPNewFormat") << "Reached end of file, recovering last data.";
00071               if( !findTrailer2(a, counter/sizeof(short)) )
00072                 {
00073                   if( (trailer_pos = findTrailer1(a, counter)) ) // if the first trailer is there
00074                     {
00075                       memcpy(a + trailer_pos + 4, trailer + 4, 4*sizeof(short));
00076                       counter += 4;
00077                     }
00078                   else
00079                     {
00080                       memcpy(a + counter/sizeof(short), trailer, 8*sizeof(short));
00081                       counter += 8;
00082                     }
00083                 }
00084             }
00085         }
00086       
00087     }while( !hasTrailer(a, counter/sizeof(short)) );
00088   
00089   void * event = malloc(counter);
00090   memset(event,0,counter);
00091   memcpy(event,a,counter);
00092   *buf=reinterpret_cast<unsigned short*>(event);
00093     
00094   //printf("\n\n\n  returning %d: \n\n\n",(count*8));
00095 
00096   return counter;  //Total number of bytes read
00097 
00098 } //readSP

virtual int FileReaderSPNewFormat::reset ( void ) [inline, virtual]

Implements SPReader.

Definition at line 15 of file FileReaderSPNewFormat.h.

00015 {return 0;}

unsigned short FileReaderSPNewFormat::header[8] [protected]

Definition at line 34 of file FileReaderSPNewFormat.h.

Referenced by FileReaderSPNewFormat().

unsigned FileReaderSPNewFormat::pointer [protected]

Definition at line 31 of file FileReaderSPNewFormat.h.

Referenced by FileReaderSPNewFormat(), and readSP().

unsigned short FileReaderSPNewFormat::trailer[8] [protected]

Definition at line 33 of file FileReaderSPNewFormat.h.

Referenced by FileReaderSPNewFormat(), isTrailer1(), isTrailer2(), and readSP().


Public Member Functions
virtual void	Configure ()
virtual int	disableBlock ()
virtual int	enableBlock ()
virtual int	endBlockRead ()
	FileReaderSPNewFormat ()
virtual int	readSP (unsigned short **buf, const bool debug=false)
	assumes fd_schar has been set
virtual int	reset ()
virtual	~FileReaderSPNewFormat ()
Protected Member Functions
virtual int	chunkSize ()
	How many bytes to read at a time.
unsigned	findTrailer1 (const unsigned short *, unsigned length)
unsigned	findTrailer2 (const unsigned short *, unsigned length)
bool	hasTrailer (const unsigned short *, unsigned length)
bool	isTrailer1 (const unsigned short *)
bool	isTrailer2 (const unsigned short *)
Protected Attributes
unsigned short	header [8]
unsigned	pointer
unsigned short	trailer [8]

FileReaderSPNewFormat Class Reference

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation