void cancel(Fn_0<void> *fn)
{
if(!fn) return;
Ttask *t;
for(t=timer_tasks.next;t;t=t->link.next)
if(t->fn==fn)
break;
if(t)
{
t->fn->cancel();
t->fn=0;
timer_tasks.deque(t);
delete t;
}
}
void note(int usecs)
{
Ttask *t;
for(t=timer_tasks.next;t;t=t->link.next)
if(t->usecs>0)
{
t->usecs-=usecs;
}
while (!timer_tasks.empty() && timer_tasks.next->usecs<=0)
{
t=timer_tasks.next;
timer_tasks.deque(t);
t->fn->cont(t->fn);
delete t;
}
}
Port::~Port()
{
ports.deque(this);
}
