git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/backtrace.cc

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  libmcachedd client library.
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *  All rights reserved.
   7  *
   8  *  Redistribution and use in source and binary forms, with or without
   9  *  modification, are permitted provided that the following conditions are
  10  *  met:
  11  *
  12  *      * Redistributions of source code must retain the above copyright
  13  *  notice, this list of conditions and the following disclaimer.
  14  *
  15  *      * Redistributions in binary form must reproduce the above
  16  *  copyright notice, this list of conditions and the following disclaimer
  17  *  in the documentation and/or other materials provided with the
  18  *  distribution.
  19  *
  20  *      * The names of its contributors may not be used to endorse or
  21  *  promote products derived from this software without specific prior
  22  *  written permission.
  23  *
  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  */
  37
  38 #include <libmemcached/common.h>
  39
  40 #ifdef HAVE_EXECINFO_H
  41 #  include <execinfo.h>
  42 #endif
  43
  44 #ifdef HAVE_GCC_ABI_DEMANGLE
  45 #  include <cxxabi.h>
  46 #endif
  47
  48 #ifdef HAVE_DLFCN_H
  49 #  include <dlfcn.h>
  50 #endif
  51
  52 #ifdef HAVE_GCC_ABI_DEMANGLE
  53 #  define USE_DEMANGLE 1
  54 #else
  55 #  define USE_DEMANGLE 0
  56 #endif
  57
  58 const int MAX_DEPTH= 50;
  59
  60 void custom_backtrace(void)
  61 {
  62 #ifdef HAVE_EXECINFO_H
  63   void *array[MAX_DEPTH];
  64
  65   int backtrace_size= backtrace(array, MAX_DEPTH);
  66   fprintf(stderr, "Number of stack frames obtained: %d\n", backtrace_size);
  67
  68 #ifdef HAVE_DLFCN_H
  69   Dl_info dlinfo;
  70 #endif
  71
  72   for (int x= 0; x < backtrace_size; ++x)
  73   {
  74 #ifdef HAVE_DLFCN_H
  75     if (dladdr(array[x], &dlinfo) == 0)
  76     {
  77       continue;
  78     }
  79 #endif
  80
  81     const char* symname= dlinfo.dli_sname;
  82
  83     int status;
  84     char* demangled= abi::__cxa_demangle(symname, NULL, 0, &status);
  85     if (status == 0 and demangled)
  86     {
  87       symname= demangled;
  88     }
  89
  90     printf("object: %s, function: %s\n", dlinfo.dli_fname, symname);
  91
  92     if (demangled)
  93     {
  94       free(demangled);
  95     }
  96   }
  97 #endif // HAVE_EXECINFO_H
  98 }