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Location: cpp/openttd-patchpack/source/src/crashlog.h - annotation
r16843:a8f72c659012
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(svn r21587) -Codechange: Move simple callback functions into the switch.
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/*
* 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;
/**
* Helper function for printing the gamelog.
* @param s the string to print.
*/
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 NULL.
* @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 libaries/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;
/**
* Writes OpenTTD's 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.
*/
char *LogOpenTTDVersion(char *buffer, const char *last) const;
/**
* Writes the (important) configuration settings to the buffer.
* E.g. graphics set, sound set, blitter and AIs.
* @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.
*/
char *LogConfiguration(char *buffer, const char *last) const;
/**
* Writes information (versions) of the used libraries.
* @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.
*/
char *LogLibraries(char *buffer, const char *last) const;
/**
* Writes the gamelog data 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.
*/
char *LogGamelog(char *buffer, const char *last) const;
public:
/** Stub destructor to silence some compilers. */
virtual ~CrashLog() {}
/**
* Fill the crash log buffer with all data of a crash log.
* @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.
*/
char *FillCrashLog(char *buffer, const char *last) const;
/**
* Write the crash log to a file.
* @note On success the filename will be filled with the full path of the
* crash log file. Make sure filename is at least \c MAX_PATH big.
* @param buffer The begin of the buffer to write to the disk.
* @param filename Output for the filename of the written file.
* @param filename_last The last position in the filename buffer.
* @return true when the crash log was successfully written.
*/
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;
/**
* Write the (crash) savegame to a file.
* @note On success the filename will be filled with the full path of the
* crash save 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 true when the crash save was successfully made.
*/
bool WriteSavegame(char *filename, const char *filename_last) const;
/**
* Write the (crash) screenshot to a file.
* @note On success the filename will be filled with the full path of the
* screenshot. 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 true when the crash screenshot was successfully made.
*/
bool WriteScreenshot(char *filename, const char *filename_last) const;
/**
* Makes the crash log, writes it to a file and then subsequently tries
* to make a crash dump and crash savegame. It uses DEBUG to write
* information like paths to the console.
* @return true when everything is made successfully.
*/
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();
/**
* Sets a message for the error message handler.
* @param message The error message of the error.
*/
static void SetErrorMessage(const char *message);
/**
* Try to close the sound/video stuff so it doesn't keep lingering around
* incorrect video states or so, e.g. keeping dpmi disabled.
*/
static void AfterCrashLogCleanup();
};
#endif /* CRASHLOG_H */
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