How to print log with current time graceful?

[lxlenovostar]

I want to print log with current time in this way:

uint64_t now = tmr_seconds();
DEBUG_WARNING("time:%llu, statistics  ok\n");

 static uint64_t tmr_seconds(void)
 {
     struct timeval now;
     uint64_t usec;
 
     if (0 != gettimeofday(&now, NULL)) {
         DEBUG_WARNING("jiffies: gettimeofday() failed (%m)\n", errno);
         return 0;
     }
 
     usec  = (uint64_t)now.tv_sec;
 
     return usec;
 }

Are there other more elegant ways?
Thank you

[alfredh]

check out the DBG_TIME option in dbg_init:

/** Debug flags */
enum dbg_flags {
	DBG_NONE = 0,                 /**< No debug flags         */
	DBG_TIME = 1<<0,              /**< Print timestamp flag   */
	DBG_ANSI = 1<<1,              /**< Print ANSI color codes */
	DBG_ALL  = DBG_TIME|DBG_ANSI  /**< All flags enabled      */
};

void dbg_init(int level, enum dbg_flags flags);

If you enable DBG_TIME it will prefix all loglines with the timestamp.

Alfred

[lxlenovostar]

I set the options withe dbg_init:
dbg_init(DBG_DEBUG, DBG_ALL);

I think this time is program running time, not system time.

Thank you.

[alfredh]

for questions about how to use the API it is better to use the mailing list:

http://lists.creytiv.com/mailman/listinfo/re-devel

here is a simple test program using fmt_gmtime and fmt_human_time

#include <re.h>


int main(void)
{
	uint32_t seconds = 3600 + 60 + 5;

	re_printf("gmtime:      %H\n", fmt_gmtime, NULL);
	re_printf("human_time:  %H\n", fmt_human_time, &seconds);
}

and the output:

./test 
gmtime:      Thu, 05 Apr 2018 06:48:48 GMT
human_time:  1 hour 1 min 5 secs