void ChildSupervisor::HandleTimer(void)
{
Child * child;
uint8_t numChildren;
VerifyOrExit(mSupervisionInterval != 0);
child = GetNetif().GetMle().GetChildren(&numChildren);
for (uint8_t i = 0; i < numChildren; i++, child++)
{
if (!child->IsStateValidOrRestoring())
{
continue;
}
child->IncrementSecondsSinceLastSupervision();
if ((child->GetSecondsSinceLastSupervision() >= mSupervisionInterval) && (child->IsRxOnWhenIdle() == false))
{
SendMessage(*child);
}
}
mTimer.Start(kOneSecond);
exit:
return;
}
// Checks whether a `Child::State` matches a `ChildTable::StateFilter`.
static bool StateMatchesFilter(Child::State aState, ChildTable::StateFilter aFilter)
{
bool rval = false;
Child child;
child.SetState(aState);
switch (aFilter)
{
case ChildTable::kInStateAnyExceptInvalid:
rval = (aState != Child::kStateInvalid);
break;
case ChildTable::kInStateValid:
rval = (aState == Child::kStateValid);
break;
case ChildTable::kInStateValidOrRestoring:
rval = child.IsStateValidOrRestoring();
break;
case ChildTable::kInStateChildIdRequest:
rval = (aState == Child::kStateChildIdRequest);
break;
case ChildTable::kInStateValidOrAttaching:
rval = child.IsStateValidOrAttaching();
break;
case ChildTable::kInStateAnyExceptValidOrRestoring:
rval = !child.IsStateValidOrRestoring();
break;
}
return rval;
}