src/debug.h

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #pragma once
  21
  22 #include <iostream>
  23 #include <exception>
  24 #include <cassert>
  25 #include "gettime.h"
  26 #include "log.h"
  27
  28 #ifdef _WIN32
  29         #ifndef _WIN32_WINNT
  30                 #define _WIN32_WINNT 0x0501
  31         #endif
  32         #include <windows.h>
  33         #ifdef _MSC_VER
  34                 #include <eh.h>
  35         #endif
  36         #define NORETURN __declspec(noreturn)
  37         #define FUNCTION_NAME __FUNCTION__
  38 #else
  39         #define NORETURN __attribute__ ((__noreturn__))
  40         #define FUNCTION_NAME __PRETTY_FUNCTION__
  41 #endif
  42
  43 // Whether to catch all std::exceptions.
  44 // When "catching", the program will abort with an error message.
  45 // In debug mode, leave these for the debugger and don't catch them.
  46 #ifdef NDEBUG
  47         #define CATCH_UNHANDLED_EXCEPTIONS 1
  48 #else
  49         #define CATCH_UNHANDLED_EXCEPTIONS 0
  50 #endif
  51
  52 /* Abort program execution immediately
  53  */
  54 NORETURN extern void fatal_error_fn(
  55                 const char *msg, const char *file,
  56                 unsigned int line, const char *function);
  57
  58 #define FATAL_ERROR(msg) \
  59         fatal_error_fn((msg), __FILE__, __LINE__, FUNCTION_NAME)
  60
  61 #define FATAL_ERROR_IF(expr, msg) \
  62         ((expr) \
  63         ? fatal_error_fn((msg), __FILE__, __LINE__, FUNCTION_NAME) \
  64         : (void)(0))
  65
  66 /*
  67         sanity_check()
  68         Equivalent to assert() but persists in Release builds (i.e. when NDEBUG is
  69         defined)
  70 */
  71
  72 NORETURN extern void sanity_check_fn(
  73                 const char *assertion, const char *file,
  74                 unsigned int line, const char *function);
  75
  76 #define SANITY_CHECK(expr) \
  77         ((expr) \
  78         ? (void)(0) \
  79         : sanity_check_fn(#expr, __FILE__, __LINE__, FUNCTION_NAME))
  80
  81 #define sanity_check(expr) SANITY_CHECK(expr)
  82
  83
  84 void debug_set_exception_handler();
  85
  86 /*
  87         These should be put into every thread
  88 */
  89
  90 #if CATCH_UNHANDLED_EXCEPTIONS == 1
  91         #define BEGIN_DEBUG_EXCEPTION_HANDLER try {
  92         #define END_DEBUG_EXCEPTION_HANDLER                        \
  93                 } catch (std::exception &e) {                          \
  94                         errorstream << "An unhandled exception occurred: " \
  95                                 << e.what() << std::endl;                      \
  96                         FATAL_ERROR(e.what());                             \
  97                 }
  98 #else
  99         // Dummy ones
 100         #define BEGIN_DEBUG_EXCEPTION_HANDLER
 101         #define END_DEBUG_EXCEPTION_HANDLER
 102 #endif