src/debug.h

   1 /*
   2  * This file is part of OpenTTD.
   3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   6  */
   7
   8 /** @file debug.h Functions related to debugging. */
   9
  10 #ifndef DEBUG_H
  11 #define DEBUG_H
  12
  13 #include "cpu.h"
  14 #include <chrono>
  15 #include "core/format.hpp"
  16
  17 /* Debugging messages policy:
  18  * These should be the severities used for direct Debug() calls
  19  * maximum debugging level should be 10 if really deep, deep
  20  * debugging is needed.
  21  * (there is room for exceptions, but you have to have a good cause):
  22  * 0   - errors or severe warnings
  23  * 1   - other non-fatal, non-severe warnings
  24  * 2   - crude progress indicator of functionality
  25  * 3   - important debugging messages (function entry)
  26  * 4   - debugging messages (crude loop status, etc.)
  27  * 5   - detailed debugging information
  28  * 6.. - extremely detailed spamming
  29  */
  30
  31 /**
  32  * Ouptut a line of debugging information.
  33  * @param category The category of debug information.
  34  * @param level The maximum debug level this message should be shown at. When the debug level for this category is set lower, then the message will not be shown.
  35  * @param format_string The formatting string of the message.
  36  */
  37 #define Debug(category, level, format_string, ...) do { if ((level) == 0 || _debug_ ## category ## _level >= (level)) DebugPrint(#category, level, fmt::format(FMT_STRING(format_string), ## __VA_ARGS__)); } while (false)
  38 void DebugPrint(const char *category, int level, const std::string &message);
  39
  40 extern int _debug_driver_level;
  41 extern int _debug_grf_level;
  42 extern int _debug_map_level;
  43 extern int _debug_misc_level;
  44 extern int _debug_net_level;
  45 extern int _debug_sprite_level;
  46 extern int _debug_oldloader_level;
  47 extern int _debug_npf_level;
  48 extern int _debug_yapf_level;
  49 extern int _debug_fontcache_level;
  50 extern int _debug_script_level;
  51 extern int _debug_sl_level;
  52 extern int _debug_gamelog_level;
  53 extern int _debug_desync_level;
  54 extern int _debug_console_level;
  55 #ifdef RANDOM_DEBUG
  56 extern int _debug_random_level;
  57 #endif
  58
  59 void DumpDebugFacilityNames(std::back_insert_iterator<std::string> &output_iterator);
  60 void SetDebugString(const char *s, void (*error_func)(const std::string &));
  61 std::string GetDebugString();
  62
  63 /* Shorter form for passing filename and linenumber */
  64 #define FILE_LINE __FILE__, __LINE__
  65
  66 /** TicToc profiling.
  67  * Usage:
  68  * static TicToc::State state("A name", 1);
  69  * TicToc tt(state);
  70  * --Do your code--
  71  */
  72 struct TicToc {
  73         /** Persistent state for TicToc profiling. */
  74         struct State {
  75                 const std::string_view name;
  76                 const uint32_t max_count;
  77                 uint32_t count = 0;
  78                 uint64_t chrono_sum = 0;
  79
  80                 constexpr State(std::string_view name, uint32_t max_count) : name(name), max_count(max_count) { }
  81         };
  82
  83         State &state;
  84         std::chrono::high_resolution_clock::time_point chrono_start; ///< real time count.
  85
  86         inline TicToc(State &state) : state(state), chrono_start(std::chrono::high_resolution_clock::now()) { }
  87
  88         inline ~TicToc()
  89         {
  90                 this->state.chrono_sum += (std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::high_resolution_clock::now() - this->chrono_start)).count();
  91                 if (++this->state.count == this->state.max_count) {
  92                         Debug(misc, 0, "[{}] {} us [avg: {:.1f} us]", this->state.name, this->state.chrono_sum, this->state.chrono_sum / static_cast<double>(this->state.count));
  93                         this->state.count = 0;
  94                         this->state.chrono_sum = 0;
  95                 }
  96         }
  97 };
  98
  99 void ShowInfoI(const std::string &str);
 100 #define ShowInfo(format_string, ...) ShowInfoI(fmt::format(FMT_STRING(format_string), ## __VA_ARGS__))
 101
 102 std::string GetLogPrefix(bool force = false);
 103
 104 void DebugSendRemoteMessages();
 105 void DebugReconsiderSendRemoteMessages();
 106
 107 #endif /* DEBUG_H */