iperf3-tls/src/timer.c

159 lines
2.9 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/errno.h>
#include <sys/types.h>
#include <stdint.h>
#include <time.h>
#include "timer.h"
double
timeval_to_double(struct timeval * tv)
{
double d;
d = tv->tv_sec + tv->tv_usec / 1000000;
return d;
}
double
timeval_diff(struct timeval * tv0, struct timeval * tv1)
{
//return timeval_to_double(tv1) - timeval_to_double(tv0);
return (tv1->tv_sec - tv0->tv_sec) + abs(tv1->tv_usec - tv0->tv_usec) / 1000000.0;
}
int
timer_expired(struct timer * tp)
{
/* for timer with zero time */
if (tp->end.tv_sec == tp->begin.tv_sec && tp->end.tv_usec == tp->begin.tv_usec)
{
//printf(" timer_expired: begining and end times are equal \n");
return 0;
}
struct timeval now;
int64_t end = 0, current = 0, diff = 0;
//printf("checking if timer has expired \n");
if (gettimeofday(&now, NULL) < 0)
{
perror("gettimeofday");
return -1;
}
end += tp->end.tv_sec * 1000000;
end += tp->end.tv_usec;
current += now.tv_sec * 1000000;
current += now.tv_usec;
diff = end - current;
return diff <= 0;
}
void
update_timer(struct timer * tp, time_t sec, suseconds_t usec)
{
if (gettimeofday(&tp->begin, NULL) < 0)
{
perror("gettimeofday");
}
memcpy(&tp->end, &tp->begin, sizeof(struct timer));
tp->end.tv_sec = tp->begin.tv_sec + (time_t) sec;
tp->end.tv_usec = tp->begin.tv_usec + (time_t) usec;
tp->expired = timer_expired;
}
struct timer *
new_timer(time_t sec, suseconds_t usec)
{
struct timer *tp;
tp = (struct timer *) malloc(sizeof(struct timer));
if (gettimeofday(&tp->begin, NULL) < 0)
{
perror("gettimeofday");
return NULL;
}
memcpy(&tp->end, &tp->begin, sizeof(struct timer));
tp->end.tv_sec = tp->begin.tv_sec + (time_t) sec;
tp->end.tv_usec = tp->begin.tv_usec + (time_t) usec;
tp->expired = timer_expired;
return tp;
}
void
free_timer(struct timer * tp)
{
free(tp);
}
int
delay(int64_t ns)
{
struct timespec req, rem;
req.tv_sec = 0;
while (ns >= 1000000000L)
{
ns -= 1000000000L;
req.tv_sec += 1;
}
req.tv_nsec = ns;
while (nanosleep(&req, &rem) == -1)
if (EINTR == errno)
memcpy(&req, &rem, sizeof rem);
else
return -1;
return 0;
}
# ifdef DELAY_SELECT_METHOD
int
delay(int us)
{
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = us;
(void) select(1, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, &tv);
return (1);
}
#endif
int64_t
timer_remaining(struct timer * tp)
{
struct timeval now;
long int end_time = 0, current_time = 0, diff = 0;
if (gettimeofday(&now, NULL) < 0)
{
perror("gettimeofday");
return -1;
}
end_time += tp->end.tv_sec * 1000000;
end_time += tp->end.tv_usec;
current_time += now.tv_sec * 1000000;
current_time += now.tv_usec;
diff = end_time - current_time;
if (diff > 0)
return diff;
else
return 0;
}