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nxdumptool/include/core/nxdt_log.h
Pablo Curiel 6acdb38d11 FileWriter: remove call to ftruncate()
ftruncate() may severely delay the start of a dump process for certain UMS devices, and the write speed differences when using the SD card seem to be negligible.

Other changes include:

* FileWriter: add log messages throughout all class methods.

* log: update generic log macros to use __PRETTY_FUNCTION__ instead of __func__.
* log: add logFormatFunctionName() function, which takes an input __PRETTY_FUNCTION__ string and parses the info we need from it.
* log: update _logWriteFormattedStringToLogFile() and logWriteFormattedStringToBuffer() functions to reflect the other changes.
2024-05-03 15:14:32 +02:00

151 lines
7.8 KiB
C

/*
* nxdt_log.h
*
* Copyright (c) 2020-2024, DarkMatterCore <pabloacurielz@gmail.com>.
*
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
*
* nxdumptool 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, either version 3 of the License, or
* (at your option) any later version.
*
* nxdumptool 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#ifndef __NXDT_LOG_H__
#define __NXDT_LOG_H__
#ifdef __cplusplus
extern "C" {
#endif
/// Used to control logfile verbosity.
#define LOG_LEVEL_DEBUG 0
#define LOG_LEVEL_INFO 1
#define LOG_LEVEL_WARNING 2
#define LOG_LEVEL_ERROR 3
#define LOG_LEVEL_NONE 4
/// Defines the log level used throughout the application.
/// Log messages with a log value lower than this one won't be compiled into the binary.
/// If a value lower than LOG_LEVEL_DEBUG or equal to/greater than LOG_LEVEL_NONE is used, logfile output will be entirely disabled.
#define LOG_LEVEL LOG_LEVEL_DEBUG /* TODO: change before release (warning?). */
#if (LOG_LEVEL >= LOG_LEVEL_DEBUG) && (LOG_LEVEL < LOG_LEVEL_NONE)
/// Helper macros.
#define LOG_MSG_GENERIC(level, fmt, ...) logWriteFormattedStringToLogFile(level, __FILE__, __LINE__, __PRETTY_FUNCTION__, fmt, ##__VA_ARGS__)
#define LOG_MSG_BUF_GENERIC(dst, dst_size, level, fmt, ...) logWriteFormattedStringToBuffer(dst, dst_size, level, __FILE__, __LINE__, __PRETTY_FUNCTION__, fmt, ##__VA_ARGS__)
#define LOG_DATA_GENERIC(data, data_size, level, fmt, ...) logWriteBinaryDataToLogFile(data, data_size, level, __FILE__, __LINE__, __PRETTY_FUNCTION__, fmt, ##__VA_ARGS__)
#if LOG_LEVEL == LOG_LEVEL_DEBUG
#define LOG_MSG_DEBUG(fmt, ...) LOG_MSG_GENERIC(LOG_LEVEL_DEBUG, fmt, ##__VA_ARGS__)
#define LOG_MSG_BUF_DEBUG(dst, dst_size, fmt, ...) LOG_MSG_BUF_GENERIC(dst, dst_size, LOG_LEVEL_DEBUG, fmt, ##__VA_ARGS__)
#define LOG_DATA_DEBUG(data, data_size, fmt, ...) LOG_DATA_GENERIC(data, data_size, LOG_LEVEL_DEBUG, fmt, ##__VA_ARGS__)
#else
#define LOG_MSG_DEBUG(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_DEBUG(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_DEBUG(data, data_size, fmt, ...) do {} while(0)
#endif /* LOG_LEVEL == LOG_LEVEL_DEBUG */
#if LOG_LEVEL <= LOG_LEVEL_INFO
#define LOG_MSG_INFO(fmt, ...) LOG_MSG_GENERIC(LOG_LEVEL_INFO, fmt, ##__VA_ARGS__)
#define LOG_MSG_BUF_INFO(dst, dst_size, fmt, ...) LOG_MSG_BUF_GENERIC(dst, dst_size, LOG_LEVEL_INFO, fmt, ##__VA_ARGS__)
#define LOG_DATA_INFO(data, data_size, fmt, ...) LOG_DATA_GENERIC(data, data_size, LOG_LEVEL_INFO, fmt, ##__VA_ARGS__)
#else
#define LOG_MSG_INFO(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_INFO(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_INFO(data, data_size, fmt, ...) do {} while(0)
#endif /* LOG_LEVEL <= LOG_LEVEL_INFO */
#if LOG_LEVEL <= LOG_LEVEL_WARNING
#define LOG_MSG_WARNING(fmt, ...) LOG_MSG_GENERIC(LOG_LEVEL_WARNING, fmt, ##__VA_ARGS__)
#define LOG_MSG_BUF_WARNING(dst, dst_size, fmt, ...) LOG_MSG_BUF_GENERIC(dst, dst_size, LOG_LEVEL_WARNING, fmt, ##__VA_ARGS__)
#define LOG_DATA_WARNING(data, data_size, fmt, ...) LOG_DATA_GENERIC(data, data_size, LOG_LEVEL_WARNING, fmt, ##__VA_ARGS__)
#else
#define LOG_MSG_WARNING(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_WARNING(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_WARNING(data, data_size, fmt, ...) do {} while(0)
#endif /* LOG_LEVEL <= LOG_LEVEL_WARNING */
#if LOG_LEVEL <= LOG_LEVEL_ERROR
#define LOG_MSG_ERROR(fmt, ...) LOG_MSG_GENERIC(LOG_LEVEL_ERROR, fmt, ##__VA_ARGS__)
#define LOG_MSG_BUF_ERROR(dst, dst_size, fmt, ...) LOG_MSG_BUF_GENERIC(dst, dst_size, LOG_LEVEL_ERROR, fmt, ##__VA_ARGS__)
#define LOG_DATA_ERROR(data, data_size, fmt, ...) LOG_DATA_GENERIC(data, data_size, LOG_LEVEL_ERROR, fmt, ##__VA_ARGS__)
#else
#define LOG_MSG_ERROR(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_ERROR(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_ERROR(data, data_size, fmt, ...) do {} while(0)
#endif /* LOG_LEVEL <= LOG_LEVEL_ERROR */
/// Writes the provided string to the logfile.
/// If the logfile hasn't been created and/or opened, this function takes care of it.
void logWriteStringToLogFile(const char *src);
/// Writes a formatted log string to the logfile.
/// If the logfile hasn't been created and/or opened, this function takes care of it.
__attribute__((format(printf, 5, 6))) void logWriteFormattedStringToLogFile(u8 level, const char *file_name, int line, const char *func_name, const char *fmt, ...);
/// Writes a formatted log string to the provided buffer.
/// If the buffer isn't big enough to hold both its current contents and the new formatted string, it will be resized.
__attribute__((format(printf, 7, 8))) void logWriteFormattedStringToBuffer(char **dst, size_t *dst_size, u8 level, const char *file_name, int line, const char *func_name, const char *fmt, ...);
/// Writes a formatted log string + a hex string representation of the provided binary data to the logfile.
/// If the logfile hasn't been created and/or opened, this function takes care of it.
__attribute__((format(printf, 7, 8))) void logWriteBinaryDataToLogFile(const void *data, size_t data_size, u8 level, const char *file_name, int line, const char *func_name, const char *fmt, ...);
/// Forces a flush operation on the logfile.
void logFlushLogFile(void);
/// Write any pending data to the logfile, flushes it and then closes it.
void logCloseLogFile(void);
/// Returns a pointer to a dynamically allocated buffer that holds the last error message string, or NULL if there's none.
/// The allocated buffer must be freed by the caller using free().
char *logGetLastMessage(void);
/// (Un)locks the log mutex. Can be used to block other threads and prevent them from writing data to the logfile.
/// Use with caution.
void logControlMutex(bool lock);
#else /* (LOG_LEVEL >= LOG_LEVEL_DEBUG) && (LOG_LEVEL < LOG_LEVEL_NONE) */
/// Helper macros.
#define LOG_MSG_GENERIC(level, fmt, ...) do {} while(0)
#define LOG_MSG_BUF_GENERIC(dst, dst_size, level, fmt, ...) do {} while(0)
#define LOG_DATA_GENERIC(data, data_size, level, fmt, ...) do {} while(0)
#define LOG_MSG_DEBUG(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_DEBUG(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_DEBUG(data, data_size, fmt, ...) do {} while(0)
#define LOG_MSG_INFO(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_INFO(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_INFO(data, data_size, fmt, ...) do {} while(0)
#define LOG_MSG_WARNING(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_WARNING(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_WARNING(data, data_size, fmt, ...) do {} while(0)
#define LOG_MSG_ERROR(fmt, ...) do {} while(0)
#define LOG_MSG_BUF_ERROR(dst, dst_size, fmt, ...) do {} while(0)
#define LOG_DATA_ERROR(data, data_size, fmt, ...) do {} while(0)
#endif /* (LOG_LEVEL >= LOG_LEVEL_DEBUG) && (LOG_LEVEL < LOG_LEVEL_NONE) */
#ifdef __cplusplus
}
#endif
#endif /* __NXDT_LOG_H__ */