/*
* Function: handle_tick()
*
* At each occurrence of a tick, the OS timer will invoke
* handle_tick().
*/
static
void
handle_tick(int unused STG_UNUSED)
{
handleProfTick();
if (RtsFlags.ConcFlags.ctxtSwitchTicks > 0) {
ticks_to_ctxt_switch--;
if (ticks_to_ctxt_switch <= 0) {
ticks_to_ctxt_switch = RtsFlags.ConcFlags.ctxtSwitchTicks;
contextSwitchAllCapabilities(); /* schedule a context switch */
}
}
/*
* If we've been inactive for idleGCDelayTime (set by +RTS
* -I), tell the scheduler to wake up and do a GC, to check
* for threads that are deadlocked.
*/
switch (recent_activity) {
case ACTIVITY_YES:
recent_activity = ACTIVITY_MAYBE_NO;
ticks_to_gc = RtsFlags.GcFlags.idleGCDelayTime /
RtsFlags.MiscFlags.tickInterval;
break;
case ACTIVITY_MAYBE_NO:
if (ticks_to_gc == 0) {
if (RtsFlags.GcFlags.doIdleGC) {
recent_activity = ACTIVITY_INACTIVE;
#ifdef THREADED_RTS
wakeUpRts();
// The scheduler will call stopTimer() when it has done
// the GC.
#endif
} else {
recent_activity = ACTIVITY_DONE_GC;
// disable timer signals (see #1623, #5991, #9105)
// but only if we're not profiling (e.g. passed -h or -p RTS
// flags). If we are profiling we need to keep the timer active
// so that samples continue to be collected.
#ifdef PROFILING
if (!(RtsFlags.ProfFlags.doHeapProfile
|| RtsFlags.CcFlags.doCostCentres)) {
stopTimer();
}
#else
stopTimer();
#endif
}
} else {
ticks_to_gc--;
}
break;
default:
break;
}
}
/*
* Function: handle_tick()
*
* At each occurrence of a tick, the OS timer will invoke
* handle_tick().
*/
static
void
handle_tick(int unused STG_UNUSED)
{
handleProfTick();
if (RtsFlags.ConcFlags.ctxtSwitchTicks > 0) {
ticks_to_ctxt_switch--;
if (ticks_to_ctxt_switch <= 0) {
ticks_to_ctxt_switch = RtsFlags.ConcFlags.ctxtSwitchTicks;
contextSwitchAllCapabilities(); /* schedule a context switch */
}
}
/*
* If we've been inactive for idleGCDelayTime (set by +RTS
* -I), tell the scheduler to wake up and do a GC, to check
* for threads that are deadlocked.
*/
switch (recent_activity) {
case ACTIVITY_YES:
recent_activity = ACTIVITY_MAYBE_NO;
ticks_to_gc = RtsFlags.GcFlags.idleGCDelayTime /
RtsFlags.MiscFlags.tickInterval;
break;
case ACTIVITY_MAYBE_NO:
if (ticks_to_gc == 0) {
if (RtsFlags.GcFlags.doIdleGC) {
recent_activity = ACTIVITY_INACTIVE;
#ifdef THREADED_RTS
wakeUpRts();
// The scheduler will call stopTimer() when it has done
// the GC.
#endif
} else {
recent_activity = ACTIVITY_DONE_GC;
// disable timer signals (see #1623, #5991)
// but only if we're not profiling
#ifndef PROFILING
stopTimer();
#endif
}
} else {
ticks_to_gc--;
}
break;
default:
break;
}
}
