git.m6w6.name Git - m6w6/libmemcached/blob - src/libtest/exception.cc

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Data Differential YATL (i.e. libtest)  library
   4  *
   5  *  Copyright (C) 2012-2013 Data Differential, http://datadifferential.com/
   6  *
   7  *  Redistribution and use in source and binary forms, with or without
   8  *  modification, are permitted provided that the following conditions are
   9  *  met:
  10  *
  11  *      * Redistributions of source code must retain the above copyright
  12  *  notice, this list of conditions and the following disclaimer.
  13  *
  14  *      * Redistributions in binary form must reproduce the above
  15  *  copyright notice, this list of conditions and the following disclaimer
  16  *  in the documentation and/or other materials provided with the
  17  *  distribution.
  18  *
  19  *      * The names of its contributors may not be used to endorse or
  20  *  promote products derived from this software without specific prior
  21  *  written permission.
  22  *
  23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  26  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  29  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  30  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  33  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  *
  35  */
  36
  37 #include "libtest/yatlcon.h"
  38 #include <libtest/common.h>
  39 #include <cstdarg>
  40
  41 namespace libtest {
  42
  43 exception::exception(const char *file_arg, int line_arg, const char *func_arg):
  44   std::exception(),
  45   _line(line_arg),
  46   _file(file_arg),
  47   _func(func_arg),
  48   _error_message(NULL),
  49   _error_message_size(0)
  50 {
  51 }
  52
  53 #ifndef __INTEL_COMPILER
  54 # pragma GCC diagnostic ignored "-Wformat-nonliteral"
  55 #endif
  56 void exception::init(va_list args_)
  57 {
  58   const char *format= va_arg(args_, const char *);
  59   int error_message_length= vasprintf(&_error_message, format, args_);
  60   assert(error_message_length != -1);
  61   if (error_message_length > 0)
  62   {
  63     _error_message_size= error_message_length +1;
  64   }
  65 }
  66
  67 exception::~exception() throw()
  68 {
  69   if (_error_message)
  70   {
  71     free(_error_message);
  72   }
  73 }
  74
  75 void exception::what(size_t length_, const char* message_)
  76 {
  77   if (length_ > 0 and message_)
  78   {
  79     char *ptr= (char*) realloc(_error_message, length_ +1);
  80     if (ptr)
  81     {
  82       _error_message= ptr;
  83       memcpy(_error_message, message_, length_);
  84       _error_message[length_]= 0;
  85     }
  86   }
  87 }
  88
  89 exception::exception(const exception& other) :
  90   std::exception(),
  91   _line(other._line),
  92   _file(other._file),
  93   _func(other._func),
  94   _error_message_size(0)
  95 {
  96   if (other.length() > 0)
  97   {
  98     _error_message= (char*) malloc(other.length() +1);
  99     if (_error_message)
 100     {
 101       memcpy(_error_message, other._error_message, other.length());
 102       _error_message_size= other.length();
 103     }
 104   }
 105 }
 106
 107 } // namespace libtest
 108