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source: git/external/fastjet/Error.cc@ 1fa50c2

ImprovedOutputFile Timing dual_readout llp
Last change on this file since 1fa50c2 was 273e668, checked in by Pavel Demin <pavel.demin@…>, 10 years ago

upgrade FastJet to version 3.1.0

  • Property mode set to 100644
File size: 5.7 KB
RevLine 
[35cdc46]1//FJSTARTHEADER
[273e668]2// $Id: Error.cc 3695 2014-09-18 13:57:56Z cacciari $
[d7d2da3]3//
[35cdc46]4// Copyright (c) 2005-2014, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
[d7d2da3]5//
6//----------------------------------------------------------------------
7// This file is part of FastJet.
8//
9// FastJet is free software; you can redistribute it and/or modify
10// it under the terms of the GNU General Public License as published by
11// the Free Software Foundation; either version 2 of the License, or
12// (at your option) any later version.
13//
14// The algorithms that underlie FastJet have required considerable
[35cdc46]15// development. They are described in the original FastJet paper,
16// hep-ph/0512210 and in the manual, arXiv:1111.6097. If you use
[d7d2da3]17// FastJet as part of work towards a scientific publication, please
[35cdc46]18// quote the version you use and include a citation to the manual and
19// optionally also to hep-ph/0512210.
[d7d2da3]20//
21// FastJet is distributed in the hope that it will be useful,
22// but WITHOUT ANY WARRANTY; without even the implied warranty of
23// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24// GNU General Public License for more details.
25//
26// You should have received a copy of the GNU General Public License
27// along with FastJet. If not, see <http://www.gnu.org/licenses/>.
28//----------------------------------------------------------------------
[35cdc46]29//FJENDHEADER
[d7d2da3]30
31#include "fastjet/Error.hh"
32#include "fastjet/config.h"
33#include <sstream>
34
[273e668]35#ifndef __FJCORE__
[d7d2da3]36// printing the stack would need execinfo
37#ifdef FASTJET_HAVE_EXECINFO_H
38#include <execinfo.h>
39#include <cstdlib>
[273e668]40#ifdef FASTJET_HAVE_DEMANGLING_SUPPORT
41#include <cstdio>
42#include <cxxabi.h>
43#endif // FASTJET_HAVE_DEMANGLING_SUPPORT
44#endif // FASTJET_HAVE_EXECINFO_H
45#endif // __FJCORE__
[d7d2da3]46
47FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
48
49using namespace std;
50
51bool Error::_print_errors = true;
52bool Error::_print_backtrace = false;
53ostream * Error::_default_ostr = & cerr;
[273e668]54#if (!defined(FASTJET_HAVE_EXECINFO_H)) || defined(__FJCORE__)
55 LimitedWarning Error::_execinfo_undefined;
56#endif
57
58//----------------------------------------------------------------------
59#ifndef __FJCORE__
60
61// demangling only is included, i.e. --enable-demangling is specified
62// at configure time, execinfo.h is present and the GNU C++ ABI is
63// supported
64#if defined(FASTJET_HAVE_EXECINFO_H) && defined(FASTJET_HAVE_DEMANGLING_SUPPORT)
65// demangle a given backtrace symbol
66//
67// Notes:
68// - at the moment, only the symbol is parsed.
69// - one can get the offset by using
70// "%*[^(]%*[^_]%127[^+)]%64[+x0123456789abcdef]", symbol, offset
71// and checking if sscanf returns 0, 1 or 2
72// (offset includes the leading +)
73// - Similarly one could exctract the address and try to convert it
74// into a filename+line number like addr2line does but this seems
75// to require exteral dependencies. If we want to go down that
76// route, one could look into the inplementation o faddr2line(.c)
77// and/or dladdr.
78string Error::_demangle(const char* symbol) {
79 size_t size;
80 int status;
81 char temp[128];
82 char* demangled;
83 // first, try to demangle a c++ name
84 // decryption:
85 // %*[^(] matches any number of characters different from "("
86 // the * tells not to store in input var
87 // %*[^_] matches any number of characters different from "_"
88 // the * tells not to store in input var
89 // %127[^)+] matches at most 127 characters different from "+"
90 // match is stored
91 if (1 == sscanf(symbol, "%*[^(]%*[^_]%127[^)+]", temp)) {
92 //cout << symbol << " -> " << temp << endl;
93 if (NULL != (demangled = abi::__cxa_demangle(temp, NULL, &size, &status))) {
94 string result(demangled);
95 free(demangled);
96 return result;
97 }
98 }
99 //if that didn't work, try to get a regular c symbol
100 if (1 == sscanf(symbol, "%127s", temp)) {
101 return temp;
102 }
103
104 //if all else fails, just return the symbol
105 return symbol;
106}
107#endif // FASTJET_HAVE_DEMANGLING_SUPPORT && FASTJET_HAVE_EXECINFO_H
108#endif // __FJCORE__
109
[d7d2da3]110
[273e668]111//----------------------------------------------------------------------
[d7d2da3]112Error::Error(const std::string & message_in) {
113 _message = message_in;
[273e668]114
[d7d2da3]115 if (_print_errors && _default_ostr){
116 ostringstream oss;
117 oss << "fastjet::Error: "<< message_in << endl;
118
[273e668]119#ifndef __FJCORE__
[d7d2da3]120 // only print the stack if execinfo is available and stack enabled
121#ifdef FASTJET_HAVE_EXECINFO_H
122 if (_print_backtrace){
123 void * array[10];
124 char ** messages;
125
126 int size = backtrace(array, 10);
127 messages = backtrace_symbols(array, size);
128
129 oss << "stack:" << endl;
130 for (int i = 1; i < size && messages != NULL; ++i){
[273e668]131#ifdef FASTJET_HAVE_DEMANGLING_SUPPORT
132 oss << " #" << i << ": " << _demangle(messages[i])
133 << " [" << messages[i] << "]" << endl;
134#else
[d7d2da3]135 oss << " #" << i << ": " << messages[i] << endl;
[273e668]136#endif
[d7d2da3]137 }
138 free(messages);
139 }
[273e668]140#endif // FASTJET_HAVE_EXECINFO_H
141#endif // __FJCORE__
[d7d2da3]142
143 *_default_ostr << oss.str();
144 // get something written to file even
145 // if the program aborts
146 _default_ostr->flush();
147
148 // // output error message either to cerr or to the user-set stream
149 // if (_default_ostr) { *_default_ostr << oss.str();
150 // // get something written to file even
151 // // if the program aborts
152 // _default_ostr->flush(); }
153 // else { std::cerr << oss.str(); }
154
155 }
156}
157
[273e668]158//----------------------------------------------------------------------
159void Error::set_print_backtrace(bool enabled) {
160#if (!defined(FASTJET_HAVE_EXECINFO_H)) || defined(__FJCORE__)
161 if (enabled) {
162 _execinfo_undefined.warn("Error::set_print_backtrace(true) will not work with this build of FastJet");
163 }
164#endif
165 _print_backtrace = enabled;
166}
167
[d7d2da3]168FASTJET_END_NAMESPACE
169
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