rclcpp  master
C++ ROS Client Library API
memory_strategy.hpp
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1 // Copyright 2015 Open Source Robotics Foundation, Inc.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef RCLCPP__MEMORY_STRATEGY_HPP_
16 #define RCLCPP__MEMORY_STRATEGY_HPP_
17 
18 #include <memory>
19 #include <vector>
20 
21 #include "rcl/allocator.h"
22 #include "rcl/wait.h"
23 
25 #include "rclcpp/macros.hpp"
28 
29 namespace rclcpp
30 {
31 namespace memory_strategy
32 {
33 
35 
41 {
42 public:
44  using WeakNodeVector = std::vector<rclcpp::node_interfaces::NodeBaseInterface::WeakPtr>;
45 
46  virtual bool collect_entities(const WeakNodeVector & weak_nodes) = 0;
47 
48  virtual size_t number_of_ready_subscriptions() const = 0;
49  virtual size_t number_of_ready_services() const = 0;
50  virtual size_t number_of_ready_clients() const = 0;
51  virtual size_t number_of_ready_timers() const = 0;
52  virtual size_t number_of_guard_conditions() const = 0;
53 
54  virtual bool add_handles_to_wait_set(rcl_wait_set_t * wait_set) = 0;
55  virtual void clear_handles() = 0;
56  virtual void remove_null_handles(rcl_wait_set_t * wait_set) = 0;
57 
59  // \return Shared pointer to the fresh executable.
60  virtual rclcpp::executor::AnyExecutable::SharedPtr instantiate_next_executable() = 0;
61 
62  virtual void add_guard_condition(const rcl_guard_condition_t * guard_condition) = 0;
63 
64  virtual void remove_guard_condition(const rcl_guard_condition_t * guard_condition) = 0;
65 
66  virtual void
67  get_next_subscription(
68  rclcpp::executor::AnyExecutable::SharedPtr any_exec,
69  const WeakNodeVector & weak_nodes) = 0;
70 
71  virtual void
72  get_next_service(
73  rclcpp::executor::AnyExecutable::SharedPtr any_exec,
74  const WeakNodeVector & weak_nodes) = 0;
75 
76  virtual void
77  get_next_client(
78  rclcpp::executor::AnyExecutable::SharedPtr any_exec,
79  const WeakNodeVector & weak_nodes) = 0;
80 
81  virtual rcl_allocator_t
82  get_allocator() = 0;
83 
84  static rclcpp::SubscriptionBase::SharedPtr
85  get_subscription_by_handle(
86  const rcl_subscription_t * subscriber_handle,
87  const WeakNodeVector & weak_nodes);
88 
89  static rclcpp::ServiceBase::SharedPtr
90  get_service_by_handle(const rcl_service_t * service_handle, const WeakNodeVector & weak_nodes);
91 
92  static rclcpp::ClientBase::SharedPtr
93  get_client_by_handle(const rcl_client_t * client_handle, const WeakNodeVector & weak_nodes);
94 
95  static rclcpp::node_interfaces::NodeBaseInterface::SharedPtr
96  get_node_by_group(
97  rclcpp::callback_group::CallbackGroup::SharedPtr group,
98  const WeakNodeVector & weak_nodes);
99 
100  static rclcpp::callback_group::CallbackGroup::SharedPtr
101  get_group_by_subscription(
102  rclcpp::SubscriptionBase::SharedPtr subscription,
103  const WeakNodeVector & weak_nodes);
104 
105  static rclcpp::callback_group::CallbackGroup::SharedPtr
106  get_group_by_service(
107  rclcpp::ServiceBase::SharedPtr service,
108  const WeakNodeVector & weak_nodes);
109 
110  static rclcpp::callback_group::CallbackGroup::SharedPtr
111  get_group_by_client(
112  rclcpp::ClientBase::SharedPtr client,
113  const WeakNodeVector & weak_nodes);
114 };
115 
116 } // namespace memory_strategy
117 } // namespace rclcpp
118 
119 #endif // RCLCPP__MEMORY_STRATEGY_HPP_
Delegate for handling memory allocations while the Executor is executing.
Definition: memory_strategy.hpp:40
Definition: allocator_common.hpp:24
Definition: subscription.hpp:50
#define RCLCPP_SMART_PTR_DEFINITIONS_NOT_COPYABLE(...)
Definition: macros.hpp:51
#define RCLCPP_PUBLIC
Definition: visibility_control.hpp:50
Definition: client.hpp:50
Definition: service.hpp:39