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Log the relative time rather than the process identification. 

When diagnosing a log file, it can be useful to know the relative time
between the log entries. In contrast, the PID is mostly useless, since
the program does not ever fork.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
master
Richard Cochran 2012-06-10 12:27:59 +02:00
parent ed504c10ca
commit b34f74bf03
1 changed files with 7 additions and 5 deletions
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12
print.c
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@ -18,8 +18,8 @@
*/ */
#include <stdarg.h> #include <stdarg.h>
#include <stdio.h> #include <stdio.h>
#include <sys/types.h>
#include <syslog.h> #include <syslog.h>
#include <time.h>
#include <unistd.h> #include <unistd.h>
#include "print.h" #include "print.h"
@ -45,24 +45,26 @@ void print_verbose(void)
void print(int level, char const *format, ...) void print(int level, char const *format, ...)
{ {
pid_t pid; struct timespec ts;
va_list ap; va_list ap;
char buf[1024]; char buf[1024];
if (level > print_level) if (level > print_level)
return; return;
pid = getpid(); clock_gettime(CLOCK_MONOTONIC, &ts);
va_start(ap, format); va_start(ap, format);
vsnprintf(buf, sizeof(buf), format, ap); vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap); va_end(ap);
if (verbose) { if (verbose) {
fprintf(stdout, "ptp4l[%d]: %s\n", pid, buf); fprintf(stdout, "ptp4l[%ld.%03ld]: %s\n",
ts.tv_sec, ts.tv_nsec / 1000000, buf);
fflush(stdout); fflush(stdout);
} }
if (use_syslog) { if (use_syslog) {
syslog(level, "[%d] %s", pid, buf); syslog(level, "[%ld.%03ld] %s",
ts.tv_sec, ts.tv_nsec / 1000000, buf);
} }
} }