source/debug/backtrace.cpp

   1 /* $Id$
   2
   3 This file is part of libmspcore
   4 Copyright © 2007 Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7 #ifndef WIN32
   8 #include <dlfcn.h>
   9 #include <execinfo.h>
  10 #endif
  11 #include "backtrace.h"
  12 #include "demangle.h"
  13
  14 using namespace std;
  15
  16 namespace Msp {
  17 namespace Debug {
  18
  19 Backtrace Backtrace::create()
  20 {
  21 #ifndef WIN32
  22         void *addresses[50];
  23         int count=::backtrace(addresses, 50);
  24
  25         //char **symbols=backtrace_symbols(addresses, count);
  26
  27         Backtrace bt;
  28         Dl_info dli;
  29         for(int i=0; i<count; ++i)
  30         {
  31                 StackFrame frame;
  32                 frame.address=addresses[i];
  33                 if(dladdr(addresses[i], &dli))
  34                 {
  35                         frame.file=dli.dli_fname;
  36                         if(dli.dli_sname)
  37                                 frame.symbol=demangle(dli.dli_sname);
  38                 }
  39                 else
  40                         frame.file="<unknown>";
  41                 bt.frames.push_back(frame);
  42         }
  43
  44         //free(symbols);
  45
  46         return bt;
  47 #else
  48         return Backtrace();
  49 #endif
  50 }
  51
  52 ostream &operator<<(ostream &out, const Backtrace &bt)
  53 {
  54         const Backtrace::FrameSeq &frames=bt.get_frames();
  55         for(Backtrace::FrameSeq::const_iterator i=frames.begin(); i!=frames.end(); ++i)
  56                 out<<i->address<<" in "<<i->symbol<<" from "<<i->file<<'\n';
  57
  58         return out;
  59 }
  60
  61 } // namespace Debug
  62 } // namespace Msp