Function handleevents

freebsd/kern/kern_clocksource.c:155–226

* Handle all events for specified time on this CPU */

 * Handle all events for specified time on this CPU
 */
static int
handleevents(sbintime_t now, int fake)
{
	sbintime_t t, *hct;
	struct trapframe *frame;
	struct pcpu_state *state;
	int usermode;
	int done, runs;

	CTR3(KTR_SPARE2, "handle at %d:  now  %d.%08x",
	    curcpu, (int)(now >> 32), (u_int)(now & 0xffffffff));
	done = 0;
	if (fake) {
		frame = NULL;
		usermode = 0;
	} else {
		frame = curthread->td_intr_frame;
		usermode = TRAPF_USERMODE(frame);
	}

	state = DPCPU_PTR(timerstate);

	runs = 0;
	while (now >= state->nexthard) {
		state->nexthard += tick_sbt;
		runs++;
	}
	if (runs) {
		hct = DPCPU_PTR(hardclocktime);
		*hct = state->nexthard - tick_sbt;
		if (fake < 2) {
			hardclock(runs, usermode);
			done = 1;
		}
	}
	runs = 0;
	while (now >= state->nextstat) {
		state->nextstat += statperiod;
		runs++;
	}
	if (runs && fake < 2) {
		statclock(runs, usermode);
		done = 1;
	}
	if (profiling) {
		runs = 0;
		while (now >= state->nextprof) {
			state->nextprof += profperiod;
			runs++;
		}
		if (runs && !fake) {
			profclock(runs, usermode, TRAPF_PC(frame));
			done = 1;
		}
	} else
		state->nextprof = state->nextstat;
	if (now >= state->nextcallopt || now >= state->nextcall) {
		state->nextcall = state->nextcallopt = SBT_MAX;