void sync_request_bouncer::operator()(const strong_actor_ptr& sender,
                                      const message_id& mid) const {
  if (sender && mid.is_request())
    sender->enqueue(nullptr, mid.response_id(),
                    make_message(make_error(sec::request_receiver_down)),
                    // TODO: this breaks out of the execution unit
                    nullptr);
}
Пример #2
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void actor_registry::put_impl(atom_value key, strong_actor_ptr value) {
  if (value)
    value->get()->attach_functor([=] {
      system_.registry().put_impl(key, nullptr);
    });
  exclusive_guard guard{named_entries_mtx_};
  named_entries_.emplace(key, std::move(value));
}
Пример #3
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void actor_registry::put_impl(actor_id key, strong_actor_ptr val) {
  CAF_LOG_TRACE(CAF_ARG(key));
  if (!val)
    return;
  { // lifetime scope of guard
    exclusive_guard guard(instances_mtx_);
    if (!entries_.emplace(key, val).second)
      return;
  }
  // attach functor without lock
  CAF_LOG_INFO("added actor:" << CAF_ARG(key));
  actor_registry* reg = this;
  val->get()->attach_functor([key, reg]() {
    reg->erase(key);
  });
}
Пример #4
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bool instance::dispatch(execution_unit* ctx, const strong_actor_ptr& sender,
                        const std::vector<strong_actor_ptr>& forwarding_stack,
                        const strong_actor_ptr& receiver, message_id mid,
                        const message& msg) {
  CAF_LOG_TRACE(CAF_ARG(sender) << CAF_ARG(receiver)
                << CAF_ARG(mid) << CAF_ARG(msg));
  CAF_ASSERT(receiver && system().node() != receiver->node());
  auto path = lookup(receiver->node());
  if (! path) {
    notify<hook::message_sending_failed>(sender, receiver, mid, msg);
    return false;
  }
  auto writer = make_callback([&](serializer& sink) {
    sink << forwarding_stack << msg;
  });
  header hdr{message_type::dispatch_message, 0, 0, mid.integer_value(),
             sender ? sender->node() : this_node(), receiver->node(),
             sender ? sender->id() : invalid_actor_id, receiver->id()};
  write(ctx, path->wr_buf, hdr, &writer);
  flush(*path);
  notify<hook::message_sent>(sender, path->next_hop, receiver, mid, msg);
  return true;
}
bool operator==(const abstract_actor* x, const strong_actor_ptr& y) {
  return actor_control_block::from(x) == y.get();
}
bool operator==(const strong_actor_ptr& x, const abstract_actor* y) {
  return x.get() == actor_control_block::from(y);
}
Пример #7
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intptr_t actor::compare(const strong_actor_ptr& x) const noexcept {
  return actor_addr::compare(ptr_.get(), x.get());
}
Пример #8
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bool actor_pool::filter(upgrade_lock<detail::shared_spinlock>& guard,
                        const strong_actor_ptr& sender, message_id mid,
                        message_view& mv, execution_unit* eu) {
  auto& content = mv.content();
  CAF_LOG_TRACE(CAF_ARG(mid) << CAF_ARG(content));
  if (content.match_elements<exit_msg>()) {
    // acquire second mutex as well
    std::vector<actor> workers;
    auto em = content.get_as<exit_msg>(0).reason;
    if (cleanup(std::move(em), eu)) {
      auto tmp = mv.move_content_to_message();
      // send exit messages *always* to all workers and clear vector afterwards
      // but first swap workers_ out of the critical section
      upgrade_to_unique_lock<detail::shared_spinlock> unique_guard{guard};
      workers_.swap(workers);
      unique_guard.unlock();
      for (auto& w : workers)
        anon_send(w, tmp);
      unregister_from_system();
    }
    return true;
  }
  if (content.match_elements<down_msg>()) {
    // remove failed worker from pool
    auto& dm = content.get_as<down_msg>(0);
    upgrade_to_unique_lock<detail::shared_spinlock> unique_guard{guard};
    auto last = workers_.end();
    auto i = std::find(workers_.begin(), workers_.end(), dm.source);
    CAF_LOG_DEBUG_IF(i == last, "received down message for an unknown worker");
    if (i != last)
      workers_.erase(i);
    if (workers_.empty()) {
      planned_reason_ = exit_reason::out_of_workers;
      unique_guard.unlock();
      quit(eu);
    }
    return true;
  }
  if (content.match_elements<sys_atom, put_atom, actor>()) {
    auto& worker = content.get_as<actor>(2);
    worker->attach(default_attachable::make_monitor(worker.address(),
                                                    address()));
    upgrade_to_unique_lock<detail::shared_spinlock> unique_guard{guard};
    workers_.push_back(worker);
    return true;
  }
  if (content.match_elements<sys_atom, delete_atom, actor>()) {
    upgrade_to_unique_lock<detail::shared_spinlock> unique_guard{guard};
    auto& what = content.get_as<actor>(2);
    auto last = workers_.end();
    auto i = std::find(workers_.begin(), last, what);
    if (i != last) {
      workers_.erase(i);
    }
    return true;
  }
  if (content.match_elements<sys_atom, get_atom>()) {
    auto cpy = workers_;
    guard.unlock();
    sender->enqueue(nullptr, mid.response_id(),
                    make_message(std::move(cpy)), eu);
    return true;
  }
  if (workers_.empty()) {
    guard.unlock();
    if (sender && mid.valid()) {
      // tell client we have ignored this sync message by sending
      // and empty message back
      sender->enqueue(nullptr, mid.response_id(), message{}, eu);
    }
    return true;
  }
  return false;
}
Пример #9
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void basp_broker_state::deliver(const node_id& src_nid, actor_id src_aid,
                                strong_actor_ptr dest, message_id mid,
                                std::vector<strong_actor_ptr>& stages,
                                message& msg) {
  CAF_LOG_TRACE(CAF_ARG(src_nid) << CAF_ARG(src_aid) << CAF_ARG(dest)
                << CAF_ARG(msg) << CAF_ARG(mid));
  auto src = src_nid == this_node() ? system().registry().get(src_aid)
                                    : proxies().get_or_put(src_nid, src_aid);
  // Intercept link messages. Forwarding actor proxies signalize linking
  // by sending link_atom/unlink_atom message with src = dest.
  if (msg.type_token() == make_type_token<atom_value, strong_actor_ptr>()) {
    switch (static_cast<uint64_t>(msg.get_as<atom_value>(0))) {
      default:
        break;
      case link_atom::value.uint_value(): {
        if (src_nid != this_node()) {
          CAF_LOG_WARNING("received link message for an other node");
          return;
        }
        auto ptr = msg.get_as<strong_actor_ptr>(1);
        if (!ptr) {
          CAF_LOG_WARNING("received link message with invalid target");
          return;
        }
        if (!src) {
          CAF_LOG_DEBUG("received link for invalid actor, report error");
          anon_send(actor_cast<actor>(ptr),
                    make_error(sec::remote_linking_failed));
          return;
        }
        static_cast<actor_proxy*>(ptr->get())->local_link_to(src->get());
        return;
      }
      case unlink_atom::value.uint_value(): {
        if (src_nid != this_node()) {
          CAF_LOG_WARNING("received unlink message for an other node");
          return;
        }
        auto ptr = msg.get_as<strong_actor_ptr>(1);
        if (!ptr) {
          CAF_LOG_DEBUG("received unlink message with invalid target");
          return;
        }
        if (!src) {
          CAF_LOG_DEBUG("received unlink for invalid actor, report error");
          return;
        }
        static_cast<actor_proxy*>(ptr->get())->local_unlink_from(src->get());
        return;
      }
    }
  }
  if (!dest) {
    auto rsn = exit_reason::remote_link_unreachable;
    CAF_LOG_INFO("cannot deliver message, destination not found");
    self->parent().notify<hook::invalid_message_received>(src_nid, src,
                                                          invalid_actor_id,
                                                          mid, msg);
    if (mid.valid() && src) {
      detail::sync_request_bouncer srb{rsn};
      srb(src, mid);
    }
    return;
  }
  self->parent().notify<hook::message_received>(src_nid, src, dest, mid, msg);
  dest->enqueue(make_mailbox_element(std::move(src), mid, std::move(stages),
                                      std::move(msg)),
                nullptr);
}