By: Sanhu Li, Sunita Chandrasekaran
It's a simple library for every to easily print log information and time information at the same time. The library by default will print out a fixed-width left banner like [ Verbose 0.00 ]. The numbers are the seconds from a timer you set. By sending the initialization function with NULL, the library will use the time for now as the start timer and report the time elapse since the object is created. The library is reporting time up to 0.01 seconds and it's reporting wall-clock time instead of CPU clock time.
It's quite easy to use the library. There's a logger_use.c file containing code example to show its usage.
Put a simple example here:
mlog logger = new_mlogger(NULL);
logger.mvlog(&logger, "This is a verbose log without any dynamic values.");By sending NULL to initializer, the logger will report time from that moment.
The mlog data structure:
struct mlog {
ts_t start;
FILE *stream;
ml_mp_ptr mprint;
ml_mv_ptr mvlog;
ml_me_ptr melog;
};mprint is a general log function that you can customize the log level for the information. The default implementation of the library only support "Verbose", and "Error" logging levels. Currently, there's no structure to model the log levels and these two are the current supported ones. If you need more log levels, you can easily implement you self or wait for a further update of the repo to support customized logging levels.
mvlog is short for my verbose log, melog for my error log. They are printing different banner text, just an easier version of mprint.
By default, the library will write log information to stderr, but you can easily change the output stream to wherever you want.
The logger_use.c contains a little more complex example to use the library.
You will need CMake 3.5 or above to compile the project. But it's quite easy to create a Makefile for it if you prefer.
Feel free to contact me if you have any questions or concerns about it. Please do not bother my professor about this repo 😅.