Hi, Jan kindly tasked me with making a logger for Corinthia and helped me figure out what it needed initially.
Currently it only produces a log file and uses a small combination of macros to write out the file, line and function. It will acquire function pointers for users to hook in their own output functions and other stuff in the next iteration. However, whilst this still misses a lot of the spec, this is a good time to take a look to see how this is all going and if what I concocted here is portable, or even a good idea. Caveat: I have no clue why I keep getting the complaints from gcc, it does compile, link and run in the end.[1] You can find it here: https://github.com/apache/incubator-corinthia/blob/master/experiments/logger/log_maker.tar Files: log_maker.h // header log_maker.c // code for the log mechanism useLogmaker.c // test code Makefile You probably want to set the log directory to something useful, it's currently set to tmp/foo/bar, in useLogmaker.c main: 25 in the line set_log_dir("/tmp/foo/bar/"); to build and run, it's $ make; ./logMaker After the program is completed, it shows a message giving the path and name of the created log file. G [1] Output on my machine: gcc -ggdb -std=c99 -Wall -c -o useLogmaker.o useLogmaker.c In file included from useLogmaker.c:1:0: log_maker.h:26:12: warning: ‘global_log_level’ defined but not used [-Wunused-variable] static int global_log_level = LOG_WARNING; ^ log_maker.h:28:12: warning: ‘log_level_initialised’ defined but not used [-Wunused-variable] static int log_level_initialised = 0; ^ gcc -ggdb -std=c99 -Wall -c -o log_maker.o log_maker.c log_maker.c: In function ‘log_msg_prefix’: log_maker.c:183:5: warning: implicit declaration of function ‘dprintf’ [-Wimplicit-function-declaration] dprintf(log_file_fd, "%s %s %s:%d %s() ", level_prefixes[level], time_buf, filename, linenum, function); ^ log_maker.c: In function ‘log_msg’: log_maker.c:194:5: warning: implicit declaration of function ‘vdprintf’ [-Wimplicit-function-declaration] vdprintf(log_file_fd, fmt, argp); ^ gcc -ggdb -std=c99 -Wall -o logMaker useLogmaker.o log_maker.o Logfile created in /tmp/foo/bar/logMaker.musashi.20150813-182555 -- Visit my Coding Diary: http://gabriela-gibson.blogspot.com/
