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Nanosecond log resolution for SMLC debug log

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Using clock_gettime(), fetch the realtime clock, which has as much as
nanosecond resolution.  (In reality, it will likely ben more like
microseconds, though it returns the value in nanoseconds.) Use the
nanosecond value in SMLC log entries.  On modern systems and over
ethernet links, second resolution is probably fairly coarse for trying
to debug RJE problems.
This commit is contained in:
Dennis Boone 2020-06-23 17:15:35 -04:00
parent edf7129651
commit 6bf6e2ea48
1 changed files with 5 additions and 2 deletions
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7
devsmlc.h
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@ -49,6 +49,7 @@
*/
#include <stdbool.h>
#include <time.h>
#define SMLC_DEVICEID 0050 /* HSSMLC/MDLC is '50, SMLC is '56 */
@ -126,7 +127,7 @@ static void smlclogflush(void);
static FILE *smlclog = NULL;
static char smlclogbuf[LogLineLength + 1];
static int smlclogbytescol = 0;
static char smlctimestamp[10];
static char smlctimestamp[20];
#endif
/* connection states */
@ -285,12 +286,14 @@ int devsmlc (int class, int func, int device) {
fd_set writefds;
#if DEBUG
struct tm *tp;
struct timespec sts;
#endif
currenttime = time(0);
#if DEBUG
tp = localtime(&currenttime);
sprintf(smlctimestamp, "%02d:%02d:%02d", tp->tm_hour, tp->tm_min, tp->tm_sec);
clock_gettime(CLOCK_REALTIME, &sts);
sprintf(smlctimestamp, "%02d:%02d:%02d.%09d", tp->tm_hour, tp->tm_min, tp->tm_sec, sts.tv_nsec);
#endif
switch (device) {