static uns32 ncs_tmr_select_intr_process(struct timeval *tv, struct
timespec *ts_current, uns64 next_delay)
{
uns64 tmr_restart = 0;
uns64 time_left = 0;
struct timespec ts_curr = *ts_current;
struct timespec ts_eint = { 0, 0 };
tv->tv_sec = tv->tv_usec = 0;
if (next_delay == 0) {
tv->tv_sec = 0xffffff;
tv->tv_usec = 0;
return NCSCC_RC_SUCCESS;
}
if (clock_gettime(CLOCK_MONOTONIC, &ts_eint)) {
perror("clock_gettime with MONOTONIC Failed \n");
return NCSCC_RC_FAILURE;
} else {
tmr_restart = TIMESPEC_DIFF_IN_NS(ts_eint, ts_curr);
time_left = ((next_delay * 1000000LL * NCS_MILLISECONDS_PER_TICK) - (tmr_restart));
if (time_left > 0) {
tv->tv_sec = time_left / 1000000000LL;
tv->tv_usec = ((time_left % 1000000000LL) / 1000);
}
}
return NCSCC_RC_SUCCESS;
}
static uint32_t ncs_tmr_engine(struct timeval *tv, uint64_t *next_delay)
{
uint64_t next_expiry = 0;
uint64_t ticks_elapsed = 0;
SYSF_TMR_PAT_NODE *tmp = NULL;
#if ENABLE_SYSLOG_TMR_STATS
/* To measure avg. timer expiry gap */
struct timespec tmr_exp_prev_finish = { 0, 0 };
struct timespec tmr_exp_curr_start = { 0, 0 };
uint32_t tot_tmr_exp = 0;
uint64_t sum_of_tmr_exp_gaps = 0; /* Avg = sum_of_tmr_exp_gaps/tot_tmr_exp */
#endif
while (true) {
tmp = (SYSF_TMR_PAT_NODE *)ncs_patricia_tree_getnext(&gl_tcb.tmr_pat_tree, (uint8_t *)NULL);
ticks_elapsed = get_time_elapsed_in_ticks(&ts_start);
if (tmp != NULL) {
next_expiry = m_NCS_OS_NTOHLL_P(&tmp->key);
} else {
tv->tv_sec = 0xffffff;
tv->tv_usec = 0;
*next_delay = 0;
return NCSCC_RC_SUCCESS;
}
if (ticks_elapsed >= next_expiry) {
#if ENABLE_SYSLOG_TMR_STATS
if (tot_tmr_exp != 0) {
tmr_exp_curr_start.tv_sec = tmr_exp_curr_start.tv_nsec = 0;
if (clock_gettime(CLOCK_MONOTONIC, &tmr_exp_curr_start)) {
perror("clock_gettime with MONOTONIC Failed \n");
}
sum_of_tmr_exp_gaps += TIMESPEC_DIFF_IN_NS(tmr_exp_curr_start, tmr_exp_prev_finish);
if (tot_tmr_exp >= 100) {
printf("\nTotal active timers: %d\n", gl_tcb.stats.cnt);
printf("Average timer-expiry gap (last %d expiries) = %lld\n",
tot_tmr_exp, sum_of_tmr_exp_gaps / tot_tmr_exp);
tot_tmr_exp = 0;
sum_of_tmr_exp_gaps = 0;
}
}
#endif
if (true == sysfTmrExpiry(tmp)) { /* call expiry routine */
return NCSCC_RC_FAILURE;
}
#if ENABLE_SYSLOG_TMR_STATS
tot_tmr_exp++;
tmr_exp_prev_finish.tv_sec = tmr_exp_prev_finish.tv_nsec = 0;
if (clock_gettime(CLOCK_MONOTONIC, &tmr_exp_prev_finish)) {
perror("clock_gettime with MONOTONIC Failed \n");
return NCSCC_RC_FAILURE;
}
#endif
} else {
break;
}
} /* while loop end */
(*next_delay) = next_expiry - ticks_elapsed;
/* Convert the next_dealy intto the below structure */
tv->tv_sec = ((*next_delay) * NCS_MILLISECONDS_PER_TICK) / 1000;
tv->tv_usec = (((*next_delay) % (1000 / NCS_MILLISECONDS_PER_TICK)) * (1000 * NCS_MILLISECONDS_PER_TICK));
return NCSCC_RC_SUCCESS;
}
