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// Illustrates semantics of request().{then|await|receive}.
#include <chrono>
#include <cstdint>
#include <iostream>
#include <vector>
#include "caf/all.hpp"
using std::endl;
using std::vector;
using std::chrono::seconds;
using namespace caf;
// --(rst-cell-begin)--
using cell = typed_actor<reacts_to<put_atom, int32_t>,
replies_to<get_atom>::with<int32_t>>;
struct cell_state {
int32_t value = 0;
};
cell::behavior_type cell_impl(cell::stateful_pointer<cell_state> self,
int32_t x0) {
self->state.value = x0;
return {
[=](put_atom, int32_t val) { self->state.value = val; },
[=](get_atom) { return self->state.value; },
};
}
void waiting_testee(event_based_actor* self, vector<cell> cells) {
for (auto& x : cells)
self->request(x, seconds(1), get_atom_v).await([=](int32_t y) {
aout(self) << "cell #" << x.id() << " -> " << y << endl;
});
}
void multiplexed_testee(event_based_actor* self, vector<cell> cells) {
for (auto& x : cells)
self->request(x, seconds(1), get_atom_v).then([=](int32_t y) {
aout(self) << "cell #" << x.id() << " -> " << y << endl;
});
}
void blocking_testee(blocking_actor* self, vector<cell> cells) {
for (auto& x : cells)
self->request(x, seconds(1), get_atom_v)
.receive(
[&](int32_t y) {
aout(self) << "cell #" << x.id() << " -> " << y << endl;
},
[&](error& err) {
aout(self) << "cell #" << x.id() << " -> " << to_string(err) << endl;
});
}
// --(rst-cell-end)--
void caf_main(actor_system& system) {
vector<cell> cells;
// --(rst-spawn-begin)--
for (auto i = 0; i < 5; ++i)
cells.emplace_back(system.spawn(cell_impl, i * i));
// --(rst-spawn-end)--
scoped_actor self{system};
aout(self) << "waiting_testee" << endl;
auto x1 = self->spawn(waiting_testee, cells);
self->wait_for(x1);
aout(self) << "multiplexed_testee" << endl;
auto x2 = self->spawn(multiplexed_testee, cells);
self->wait_for(x2);
aout(self) << "blocking_testee" << endl;
system.spawn(blocking_testee, cells);
}
CAF_MAIN()
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