bool has_further_repetition(const DataRequest& request)
{
bool repeat = false;
if (request.repetition) {
repeat = has_further_repetition(request.repetition.get());
}
return repeat;
}
void Repeater::add(const DataRequestVariant& request,
const DataRequest::Repetition& repetition, const DownPacket& payload)
{
if (has_further_repetition(repetition)) {
const auto next_repetition = m_runtime.now() + units::clock_cast(repetition.interval);
m_repetitions.emplace_front(request, payload);
auto added = m_repetitions.begin();
auto then = std::placeholders::_1;
m_runtime.schedule(next_repetition, std::bind<void>(&Repeater::trigger, this, added, then));
}
}
void Repeater::trigger(std::list<Repetition>::iterator rep, Clock::time_point invocation)
{
Repetition& repetition = *rep;
DataRequest& request = access_request(repetition.m_request);
assert(request.repetition);
// reduce remaining interval by one step and occurred triggering delay
decrement_by_one(*request.repetition);
auto delayed = m_runtime.now() - invocation;
request.repetition->maximum -= units::clock_cast(delayed);
// reset repetition data if this is the last repetition
if (!has_further_repetition(request)) {
request.repetition.reset();
}
m_repeat_fn(repetition.m_request, std::move(repetition.m_payload));
m_repetitions.erase(rep);
}
void Repeater::trigger(Timestamp now)
{
while (!m_repetitions.empty() && m_repetitions.top().m_next <= now) {
// This cast is safe because element is removed afterwards anyway
Repetition& repetition = const_cast<Repetition&>(m_repetitions.top());
if (m_repeat_fn) {
DataRequest& request = access_request(repetition.m_request);
assert(request.repetition);
// reduce remaining interval by one step and occurred triggering delay
decrement_by_one(*request.repetition);
Timestamp::duration_type delayed = now - repetition.m_next;
request.repetition->maximum -= units::Duration(delayed);
// reset repetition data if this is the last repetition
if (!has_further_repetition(request)) {
request.repetition.reset();
}
m_repeat_fn(repetition.m_request, std::move(repetition.m_payload));
}
m_repetitions.pop();
}
}
