| [d7d2da3] | 1 |
|
|---|
| 2 | /** \class DelphesPileUpReader
|
|---|
| 3 | *
|
|---|
| 4 | * Reads pile-up binary file
|
|---|
| 5 | *
|
|---|
| 6 | *
|
|---|
| 7 | * $Date$
|
|---|
| 8 | * $Revision$
|
|---|
| 9 | *
|
|---|
| 10 | *
|
|---|
| 11 | * \author P. Demin - UCL, Louvain-la-Neuve
|
|---|
| 12 | *
|
|---|
| 13 | */
|
|---|
| 14 |
|
|---|
| 15 | #include "classes/DelphesPileUpReader.h"
|
|---|
| 16 |
|
|---|
| 17 | #include <stdexcept>
|
|---|
| 18 | #include <iostream>
|
|---|
| 19 | #include <sstream>
|
|---|
| 20 |
|
|---|
| 21 | #include <stdio.h>
|
|---|
| 22 | #include <rpc/types.h>
|
|---|
| 23 | #include <rpc/xdr.h>
|
|---|
| 24 |
|
|---|
| 25 | using namespace std;
|
|---|
| 26 |
|
|---|
| 27 | static const int kIndexSize = 10000000;
|
|---|
| 28 | static const int kBufferSize = 1000000;
|
|---|
| 29 | static const int kRecordSize = 9;
|
|---|
| 30 |
|
|---|
| 31 | //------------------------------------------------------------------------------
|
|---|
| 32 |
|
|---|
| 33 | DelphesPileUpReader::DelphesPileUpReader(const char *fileName) :
|
|---|
| 34 | fEntries(0), fEntrySize(0), fCounter(0),
|
|---|
| 35 | fPileUpFile(0), fIndex(0), fBuffer(0),
|
|---|
| 36 | fInputXDR(0), fIndexXDR(0), fBufferXDR(0)
|
|---|
| 37 | {
|
|---|
| 38 | stringstream message;
|
|---|
| 39 |
|
|---|
| 40 | fIndex = new char[kIndexSize*8];
|
|---|
| 41 | fBuffer = new char[kBufferSize*kRecordSize*4];
|
|---|
| 42 | fInputXDR = new XDR;
|
|---|
| 43 | fIndexXDR = new XDR;
|
|---|
| 44 | fBufferXDR = new XDR;
|
|---|
| 45 | xdrmem_create(fIndexXDR, fIndex, kIndexSize*8, XDR_DECODE);
|
|---|
| 46 | xdrmem_create(fBufferXDR, fBuffer, kBufferSize*kRecordSize*4, XDR_DECODE);
|
|---|
| 47 |
|
|---|
| 48 | fPileUpFile = fopen(fileName, "r");
|
|---|
| 49 |
|
|---|
| 50 | if(fPileUpFile == NULL)
|
|---|
| 51 | {
|
|---|
| 52 | message << "can't open pile-up file " << fileName;
|
|---|
| 53 | throw runtime_error(message.str());
|
|---|
| 54 | }
|
|---|
| 55 |
|
|---|
| 56 | xdrstdio_create(fInputXDR, fPileUpFile, XDR_DECODE);
|
|---|
| 57 |
|
|---|
| 58 | // read number of events
|
|---|
| 59 | fseek(fPileUpFile, -8, SEEK_END);
|
|---|
| 60 | xdr_hyper(fInputXDR, &fEntries);
|
|---|
| 61 |
|
|---|
| 62 | if(fEntries >= kIndexSize)
|
|---|
| 63 | {
|
|---|
| 64 | message << "too many events in pile-up file " << fileName;
|
|---|
| 65 | throw runtime_error(message.str());
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | // read index of events
|
|---|
| 69 | fseek(fPileUpFile, -8 - 8*fEntries, SEEK_END);
|
|---|
| 70 | xdr_opaque(fInputXDR, fIndex, fEntries*8);
|
|---|
| 71 | }
|
|---|
| 72 |
|
|---|
| 73 | //------------------------------------------------------------------------------
|
|---|
| 74 |
|
|---|
| 75 | DelphesPileUpReader::~DelphesPileUpReader()
|
|---|
| 76 | {
|
|---|
| 77 | xdr_destroy(fInputXDR);
|
|---|
| 78 | if(fPileUpFile) fclose(fPileUpFile);
|
|---|
| 79 | xdr_destroy(fBufferXDR);
|
|---|
| 80 | xdr_destroy(fIndexXDR);
|
|---|
| 81 | if(fBufferXDR) delete fBufferXDR;
|
|---|
| 82 | if(fIndexXDR) delete fIndexXDR;
|
|---|
| 83 | if(fInputXDR) delete fInputXDR;
|
|---|
| 84 | if(fBuffer) delete[] fBuffer;
|
|---|
| 85 | if(fIndex) delete[] fIndex;
|
|---|
| 86 | }
|
|---|
| 87 |
|
|---|
| 88 | //------------------------------------------------------------------------------
|
|---|
| 89 |
|
|---|
| 90 | bool DelphesPileUpReader::ReadParticle(int &pid,
|
|---|
| 91 | float &x, float &y, float &z, float &t,
|
|---|
| 92 | float &px, float &py, float &pz, float &e)
|
|---|
| 93 | {
|
|---|
| 94 | if(fCounter >= fEntrySize) return false;
|
|---|
| 95 |
|
|---|
| 96 | xdr_int(fBufferXDR, &pid);
|
|---|
| 97 | xdr_float(fBufferXDR, &x);
|
|---|
| 98 | xdr_float(fBufferXDR, &y);
|
|---|
| 99 | xdr_float(fBufferXDR, &z);
|
|---|
| 100 | xdr_float(fBufferXDR, &t);
|
|---|
| 101 | xdr_float(fBufferXDR, &px);
|
|---|
| 102 | xdr_float(fBufferXDR, &py);
|
|---|
| 103 | xdr_float(fBufferXDR, &pz);
|
|---|
| 104 | xdr_float(fBufferXDR, &e);
|
|---|
| 105 |
|
|---|
| 106 | ++fCounter;
|
|---|
| 107 |
|
|---|
| 108 | return true;
|
|---|
| 109 | }
|
|---|
| 110 |
|
|---|
| 111 | //------------------------------------------------------------------------------
|
|---|
| 112 |
|
|---|
| 113 | bool DelphesPileUpReader::ReadEntry(quad_t entry)
|
|---|
| 114 | {
|
|---|
| 115 | quad_t offset;
|
|---|
| 116 |
|
|---|
| 117 | if(entry >= fEntries) return false;
|
|---|
| 118 |
|
|---|
| 119 | // read event position
|
|---|
| 120 | xdr_setpos(fIndexXDR, 8*entry);
|
|---|
| 121 | xdr_hyper(fIndexXDR, &offset);
|
|---|
| 122 |
|
|---|
| 123 | // read event
|
|---|
| 124 | fseek(fPileUpFile, offset, SEEK_SET);
|
|---|
| 125 | xdr_int(fInputXDR, &fEntrySize);
|
|---|
| 126 |
|
|---|
| 127 | if(fEntrySize >= kBufferSize)
|
|---|
| 128 | {
|
|---|
| 129 | throw runtime_error("too many particles in pile-up event");
|
|---|
| 130 | }
|
|---|
| 131 |
|
|---|
| 132 | xdr_opaque(fInputXDR, fBuffer, fEntrySize*kRecordSize*4);
|
|---|
| 133 | xdr_setpos(fBufferXDR, 0);
|
|---|
| 134 | fCounter = 0;
|
|---|
| 135 |
|
|---|
| 136 | return true;
|
|---|
| 137 | }
|
|---|
| 138 |
|
|---|
| 139 | //------------------------------------------------------------------------------
|
|---|
