/* * This file is part of OpenTTD. * 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. * 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. * 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/>. */ /** @file crashlog.h Functions to be called to log a crash */ #ifndef CRASHLOG_H #define CRASHLOG_H /** * Helper class for creating crash logs. */ class CrashLog { private: /** Pointer to the error message. */ static const char *message; /** Temporary 'local' location of the buffer. */ static char *gamelog_buffer; /** Temporary 'local' location of the end of the buffer. */ static const char *gamelog_last; static void GamelogFillCrashLog(const char *s); protected: /** * Writes OS' version to the buffer. * @param buffer The begin where to write at. * @param last The last position in the buffer to write to. * @return the position of the \c '\0' character after the buffer. */ virtual char *LogOSVersion(char *buffer, const char *last) const = 0; /** * Writes compiler (and its version, if available) to the buffer. * @param buffer The begin where to write at. * @param last The last position in the buffer to write to. * @return the position of the \c '\0' character after the buffer. */ virtual char *LogCompiler(char *buffer, const char *last) const; /** * Writes actually encountered error to the buffer. * @param buffer The begin where to write at. * @param last The last position in the buffer to write to. * @param message Message passed to use for possible errors. Can be nullptr. * @return the position of the \c '\0' character after the buffer. */ virtual char *LogError(char *buffer, const char *last, const char *message) const = 0; /** * Writes the stack trace to the buffer, if there is information about it * available. * @param buffer The begin where to write at. * @param last The last position in the buffer to write to. * @return the position of the \c '\0' character after the buffer. */ virtual char *LogStacktrace(char *buffer, const char *last) const = 0; /** * Writes information about the data in the registers, if there is * information about it available. * @param buffer The begin where to write at. * @param last The last position in the buffer to write to. * @return the position of the \c '\0' character after the buffer. */ virtual char *LogRegisters(char *buffer, const char *last) const; /** * Writes the dynamically linked libraries/modules to the buffer, if there * is information about it available. * @param buffer The begin where to write at. * @param last The last position in the buffer to write to. * @return the position of the \c '\0' character after the buffer. */ virtual char *LogModules(char *buffer, const char *last) const; char *LogOpenTTDVersion(char *buffer, const char *last) const; char *LogConfiguration(char *buffer, const char *last) const; char *LogLibraries(char *buffer, const char *last) const; char *LogGamelog(char *buffer, const char *last) const; char *LogRecentNews(char *buffer, const char *list) const; public: /** Stub destructor to silence some compilers. */ virtual ~CrashLog() {} char *FillCrashLog(char *buffer, const char *last) const; bool WriteCrashLog(const char *buffer, char *filename, const char *filename_last) const; /** * Write the (crash) dump to a file. * @note On success the filename will be filled with the full path of the * crash dump file. Make sure filename is at least \c MAX_PATH big. * @param filename Output for the filename of the written file. * @param filename_last The last position in the filename buffer. * @return if less than 0, error. If 0 no dump is made, otherwise the dump * was successful (not all OSes support dumping files). */ virtual int WriteCrashDump(char *filename, const char *filename_last) const; bool WriteSavegame(char *filename, const char *filename_last) const; bool WriteScreenshot(char *filename, const char *filename_last) const; bool MakeCrashLog() const; /** * Initialiser for crash logs; do the appropriate things so crashes are * handled by our crash handler instead of returning straight to the OS. * @note must be implemented by all implementers of CrashLog. */ static void InitialiseCrashLog(); static void SetErrorMessage(const char *message); static void AfterCrashLogCleanup(); }; #endif /* CRASHLOG_H */