void on_error(std::exception_ptr e) const {
if (!is_subscribed()) {
return;
}
detacher protect(this);
destination.on_error(e);
}
void add(const SubscriberFrom& sf, observer_type o) const {
trace_activity().connect(sf, o);
std::unique_lock<std::mutex> guard(b->state->lock);
switch (b->state->current) {
case mode::Casting:
{
if (o.is_subscribed()) {
b->completer = std::make_shared<completer_type>(b->state, b->completer, o);
++b->state->generation;
}
}
break;
case mode::Completed:
{
guard.unlock();
o.on_completed();
return;
}
break;
case mode::Errored:
{
auto e = b->state->error;
guard.unlock();
o.on_error(e);
return;
}
break;
default:
abort();
}
}
void add(const SubscriberFrom& sf, observer_type o) const {
trace_activity().connect(sf, o);
std::unique_lock<std::mutex> guard(b->state->lock);
switch (b->state->current) {
case mode::Casting:
{
if (o.is_subscribed()) {
std::weak_ptr<binder_type> binder = b;
o.add([=](){
auto b = binder.lock();
if (b) {
std::unique_lock<std::mutex> guard(b->state->lock);
b->completer = std::make_shared<completer_type>(b->state, b->completer);
}
});
b->completer = std::make_shared<completer_type>(b->state, b->completer, o);
}
}
break;
case mode::Completed:
{
guard.unlock();
o.on_completed();
return;
}
break;
case mode::Errored:
{
auto e = b->state->error;
guard.unlock();
o.on_error(e);
return;
}
break;
case mode::Disposed:
{
guard.unlock();
o.unsubscribe();
return;
}
break;
default:
std::terminate();
}
}
