libs/pbd/stacktrace.cc

   1 /*
   2     Copyright (C) 2000-2007 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include "libpbd-config.h"
  21
  22 #include "pbd/stacktrace.h"
  23 #include <cstdio>
  24 #include <iostream>
  25
  26 void
  27 PBD::trace_twb ()
  28 {
  29 }
  30
  31 /* Obtain a backtrace and print it to stdout. */
  32
  33 #ifdef HAVE_EXECINFO
  34
  35 #include <execinfo.h>
  36
  37 void
  38 PBD::stacktrace (std::ostream& out, int levels)
  39 {
  40         void *array[200];
  41         size_t size;
  42         char **strings;
  43         size_t i;
  44
  45         size = backtrace (array, 200);
  46         strings = backtrace_symbols (array, size);
  47
  48         if (strings) {
  49
  50                 printf ("Obtained %zd stack frames.\n", size);
  51
  52                 for (i = 0; i < size && (levels == 0 || i < size_t(levels)); i++) {
  53                         out << strings[i] << std::endl;
  54                 }
  55
  56                 free (strings);
  57         }
  58 }
  59
  60 #else
  61
  62 void
  63 PBD::stacktrace (std::ostream& out, int /*levels*/)
  64 {
  65         out << "stack tracing is not enabled on this platform" << std::endl;
  66 }
  67
  68 void
  69 c_stacktrace ()
  70 {
  71         PBD::stacktrace (std::cout);
  72 }
  73
  74 #endif /* HAVE_EXECINFO */