git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/assert.hpp

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  libmcachedd client library.
   4  *
   5  *  Copyright (C) 2011-2013 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 #pragma once
  39
  40 #ifdef __cplusplus
  41 # include <cassert>
  42 #else
  43 # include <assert.h>
  44 #endif // __cplusplus
  45
  46 #ifdef NDEBUG
  47 # define assert_msg(__expr, __mesg) (void)(__expr); (void)(__mesg);
  48 # define assert_vmsg(__expr, __mesg, ...) (void)(__expr); (void)(__mesg);
  49 #else
  50
  51 # ifdef _WIN32
  52 #  include <malloc.h>
  53 # else
  54 #  include <alloca.h>
  55 # endif
  56
  57 #ifdef __cplusplus
  58 # include <cstdarg>
  59 # include <cstdio>
  60 #else
  61 # include <stdarg.h>
  62 # include <stdio.h>
  63 #endif
  64
  65 # include <libmemcached/backtrace.hpp>
  66
  67 # define assert_msg(__expr, __mesg) \
  68 do \
  69 { \
  70   if (not (__expr)) \
  71   { \
  72     fprintf(stderr, "\n%s:%d Assertion \"%s\" failed for function \"%s\" likely for %s\n", __FILE__, __LINE__, #__expr, __func__, (#__mesg));\
  73     custom_backtrace(); \
  74     abort(); \
  75   } \
  76 } while (0)
  77
  78 # define assert_vmsg(__expr, __mesg, ...) \
  79 do \
  80 { \
  81   if (not (__expr)) \
  82   { \
  83     size_t ask= snprintf(0, 0, (__mesg), __VA_ARGS__); \
  84     ask++; \
  85     char *_error_message= (char*)alloca(sizeof(char) * ask); \
  86     size_t _error_message_size= snprintf(_error_message, ask, (__mesg), __VA_ARGS__); \
  87     fprintf(stderr, "\n%s:%d Assertion '%s' failed for function '%s' [ %.*s ]\n", __FILE__, __LINE__, #__expr, __func__, int(_error_message_size), _error_message);\
  88     custom_backtrace(); \
  89     abort(); \
  90   } \
  91 } while (0)
  92
  93 #endif // NDEBUG