debug.h

Go to the documentation of this file.

// Luanti
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
#pragma once
 
#include <exception>
#include <cassert>
#include "log.h" // unused. for convenience.
 
#ifdef _MSC_VER
        #define FUNCTION_NAME __FUNCTION__
#else
        #define FUNCTION_NAME __PRETTY_FUNCTION__
#endif
 
// Whether to catch all std::exceptions.
// When "catching", the program will abort with an error message.
// In debug mode, leave these for the debugger and don't catch them.
#ifdef NDEBUG
        #define CATCH_UNHANDLED_EXCEPTIONS 1
#else
        #define CATCH_UNHANDLED_EXCEPTIONS 0
#endif
 
/* Abort program execution immediately
 */
[[noreturn]] extern void fatal_error_fn(
                const char *msg, const char *file,
                unsigned int line, const char *function);
 
#define FATAL_ERROR(msg) \
        fatal_error_fn((msg), __FILE__, __LINE__, FUNCTION_NAME)
 
#define FATAL_ERROR_IF(expr, msg) \
        ((expr) \
        ? fatal_error_fn((msg), __FILE__, __LINE__, FUNCTION_NAME) \
        : (void)(0))
 
/*
        sanity_check()
        Equivalent to assert() but persists in Release builds (i.e. when NDEBUG is
        defined)
*/
 
[[noreturn]] extern void sanity_check_fn(
                const char *assertion, const char *file,
                unsigned int line, const char *function);
 
#define SANITY_CHECK(expr) \
        ((expr) \
        ? (void)(0) \
        : sanity_check_fn(#expr, __FILE__, __LINE__, FUNCTION_NAME))
 
#define sanity_check(expr) SANITY_CHECK(expr)
 
std::string debug_describe_exc(const std::exception &e);
 
void debug_set_exception_handler();
 
/*
        These should be put into every thread
*/
 
#if CATCH_UNHANDLED_EXCEPTIONS == 1
        #define BEGIN_DEBUG_EXCEPTION_HANDLER try {
        #define END_DEBUG_EXCEPTION_HANDLER                        \
                } catch (std::exception &e) {                          \
                        std::string e_descr = debug_describe_exc(e);       \
                        errorstream << "An unhandled exception occurred: " \
                                << e_descr << std::endl;                       \
                        FATAL_ERROR(e_descr.c_str());                      \
                }
#else
        // Dummy ones
        #define BEGIN_DEBUG_EXCEPTION_HANDLER
        #define END_DEBUG_EXCEPTION_HANDLER
#endif