executors.hpp

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// Copyright 2014 Open Source Robotics Foundation, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef RCLCPP__EXECUTORS_HPP_
#define RCLCPP__EXECUTORS_HPP_

#include <future>
#include <memory>

#include "rclcpp/executors/multi_threaded_executor.hpp"
#include "rclcpp/executors/single_threaded_executor.hpp"
#include "rclcpp/node.hpp"
#include "rclcpp/utilities.hpp"
#include "rclcpp/visibility_control.hpp"

namespace rclcpp
{


RCLCPP_PUBLIC
void
spin_some(rclcpp::node_interfaces::NodeBaseInterface::SharedPtr node_ptr);

RCLCPP_PUBLIC
void
spin_some(rclcpp::Node::SharedPtr node_ptr);


RCLCPP_PUBLIC
void
spin(rclcpp::node_interfaces::NodeBaseInterface::SharedPtr node_ptr);

RCLCPP_PUBLIC
void
spin(rclcpp::Node::SharedPtr node_ptr);

namespace executors
{

using rclcpp::executors::MultiThreadedExecutor;
using rclcpp::executors::SingleThreadedExecutor;


template<typename ResponseT, typename TimeRepT = int64_t, typename TimeT = std::milli>
rclcpp::executor::FutureReturnCode
spin_node_until_future_complete(
  rclcpp::executor::Executor & executor,
  rclcpp::node_interfaces::NodeBaseInterface::SharedPtr node_ptr,
  std::shared_future<ResponseT> & future,
  std::chrono::duration<TimeRepT, TimeT> timeout = std::chrono::duration<TimeRepT, TimeT>(-1))
{
  // TODO(wjwwood): does not work recursively; can't call spin_node_until_future_complete
  // inside a callback executed by an executor.
  executor.add_node(node_ptr);
  auto retcode = executor.spin_until_future_complete(future, timeout);
  executor.remove_node(node_ptr);
  return retcode;
}

template<typename NodeT = rclcpp::Node, typename ResponseT, typename TimeRepT = int64_t,
  typename TimeT = std::milli>
rclcpp::executor::FutureReturnCode
spin_node_until_future_complete(
  rclcpp::executor::Executor & executor,
  std::shared_ptr<NodeT> node_ptr,
  std::shared_future<ResponseT> & future,
  std::chrono::duration<TimeRepT, TimeT> timeout = std::chrono::duration<TimeRepT, TimeT>(-1))
{
  return rclcpp::executors::spin_node_until_future_complete(
    executor,
    node_ptr->get_node_base_interface(),
    future,
    timeout);
}

}  // namespace executors

template<typename FutureT, typename TimeRepT = int64_t, typename TimeT = std::milli>
rclcpp::executor::FutureReturnCode
spin_until_future_complete(
  rclcpp::node_interfaces::NodeBaseInterface::SharedPtr node_ptr,
  std::shared_future<FutureT> & future,
  std::chrono::duration<TimeRepT, TimeT> timeout = std::chrono::duration<TimeRepT, TimeT>(-1))
{
  rclcpp::executors::SingleThreadedExecutor executor;
  return executors::spin_node_until_future_complete<FutureT>(executor, node_ptr, future, timeout);
}

template<typename NodeT = rclcpp::Node, typename FutureT, typename TimeRepT = int64_t,
  typename TimeT = std::milli>
rclcpp::executor::FutureReturnCode
spin_until_future_complete(
  std::shared_ptr<NodeT> node_ptr,
  std::shared_future<FutureT> & future,
  std::chrono::duration<TimeRepT, TimeT> timeout = std::chrono::duration<TimeRepT, TimeT>(-1))
{
  return rclcpp::spin_until_future_complete(node_ptr->get_node_base_interface(), future, timeout);
}

}  // namespace rclcpp

#endif  // RCLCPP__EXECUTORS_HPP_