Line data    Source code

       1             : /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       2             :    Copyright (c) 2012-2019 The plumed team
       3             :    (see the PEOPLE file at the root of the distribution for a list of names)
       4             : 
       5             :    See http://www.plumed.org for more information.
       6             : 
       7             :    This file is part of plumed, version 2.
       8             : 
       9             :    plumed is free software: you can redistribute it and/or modify
      10             :    it under the terms of the GNU Lesser General Public License as published by
      11             :    the Free Software Foundation, either version 3 of the License, or
      12             :    (at your option) any later version.
      13             : 
      14             :    plumed is distributed in the hope that it will be useful,
      15             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17             :    GNU Lesser General Public License for more details.
      18             : 
      19             :    You should have received a copy of the GNU Lesser General Public License
      20             :    along with plumed.  If not, see <http://www.gnu.org/licenses/>.
      21             : +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
      22             : #include "Exception.h"
      23             : 
      24             : #if defined(__PLUMED_HAS_EXECINFO)
      25             : #include <execinfo.h>
      26             : #endif
      27             : 
      28             : #include <cstdio>
      29             : #include <cstdlib>
      30             : 
      31             : using namespace std;
      32             : namespace PLMD {
      33             : 
      34          96 : std::string Exception::trace() {
      35          96 :   std::string message="\n\n********** STACK DUMP **********\n";
      36             : #ifdef __PLUMED_HAS_EXECINFO
      37             :   void* callstack[128];
      38          96 :   int frames = backtrace(callstack, 128);
      39          96 :   char** strs = backtrace_symbols(callstack, frames);
      40        2964 :   for (int i = 0; i < frames; ++i) {message+=strs[i]; message+="\n";}
      41          96 :   free(strs);
      42             : #else
      43             :   message+="not available\n";
      44             : #endif
      45             :   message+="********** END STACK DUMP **********\n";
      46          96 :   return message;
      47             : }
      48             : 
      49          48 : std::string Exception::format(const std::string&msg,const std::string&file,unsigned line,const std::string&function) {
      50             :   std::string message;
      51          96 :   if(getenv("PLUMED_STACK_TRACE"))message+=trace();
      52             :   message+="\n+++ Internal PLUMED error";
      53          48 :   if(file.length()>0) {
      54             :     char cline[1000];
      55             :     sprintf(cline,"%u",line);
      56         192 :     message += "\n+++ file "+file+", line "+cline;
      57          48 :     if(function.length()>0) message +=", function "+function;
      58             :   }
      59          96 :   if(msg.length()>0) message +="\n+++ message: "+msg;
      60          48 :   return message;
      61             : }
      62             : 
      63             : 
      64           0 : Exception::Exception():
      65             :   stackString(trace()),
      66           0 :   msg(format("","",0,""))
      67             : {
      68           0 :   abortIfExceptionsAreDisabled();
      69           0 : }
      70             : 
      71           0 : Exception::Exception(const std::string&msg):
      72             :   stackString(trace()),
      73           0 :   msg(format(msg,"",0,""))
      74             : {
      75           0 :   abortIfExceptionsAreDisabled();
      76           0 : }
      77             : 
      78          48 : Exception::Exception(const std::string&msg,const std::string&file,unsigned line,const std::string&function):
      79             :   stackString(trace()),
      80          96 :   msg(format(msg,file,line,function))
      81             : {
      82          48 :   abortIfExceptionsAreDisabled();
      83          48 : }
      84             : 
      85          48 : void Exception::abortIfExceptionsAreDisabled() {
      86             : #if ! defined(__PLUMED_HAS_EXCEPTIONS)
      87             :   fprintf(stderr,"%s","Exceptions are disabled, aborting now\n");
      88             :   fprintf(stderr,"%s",Exception::what());
      89             :   fprintf(stderr,"\n");
      90             :   std::abort();
      91             : #endif
      92          48 : }
      93             : 
      94             : }
      95             : 
      96             :