1 #ifndef DALI_INTERNAL_EVENT_THREAD_SERVICES_H
2 #define DALI_INTERNAL_EVENT_THREAD_SERVICES_H
5 * Copyright (c) 2023 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
25 #include <dali/internal/common/buffer-index.h>
33 class RenderController;
44 * Abstract interface of services for event-thread objects.
45 * Used for registering objects, queueing messages during the event-thread for the next update.
46 * Allows the event-thread to read double-buffered property values.
48 class EventThreadServices
54 virtual ~EventThreadServices() = default;
57 * Get the EventThreadServices
58 * @return reference to the EventThreadServices
60 static EventThreadServices& Get();
63 * @brief Registers the object as created with the Object registry.
65 * @param[in] object to register
67 virtual void RegisterObject(BaseObject* object) = 0;
70 * @brief Unregisters the object from Object registry.
72 * @param[in] object to unregister
74 virtual void UnregisterObject(BaseObject* object) = 0;
77 * @brief Get a reference to the UpdateManager
79 * @return the update manager
81 virtual SceneGraph::UpdateManager& GetUpdateManager() = 0;
84 * @brief Get a reference to the RenderController
86 * @return the render controller
88 virtual Integration::RenderController& GetRenderController() = 0;
91 * Reserve space for another message in the queue; this must then be initialized by the caller.
92 * The message will be read from the update-thread after the next FlushMessages is called.
93 * @post Calling this method may invalidate any previously returned slots.
94 * @param[in] size The message size with respect to the size of type "char".
95 * @param[in] updateScene A flag, when true denotes that the message will cause the scene-graph node tree to require an update.
96 * @return A pointer to the first char allocated for the message.
98 virtual uint32_t* ReserveMessageSlot(uint32_t size, bool updateScene = true) = 0;
101 * @return the current event-buffer index.
103 virtual BufferIndex GetEventBufferIndex() const = 0;
106 * @return true if core is still running and we can send messages
107 * @note It returns false if it is called from a thread other than the main thread.
109 static bool IsCoreRunning();
112 * @brief Check if the event thread service is shutting down.
114 * @return true if the event thread service is shutting down.
115 * @note It returns false if the core hasn't been initialised yet.
117 static bool IsShuttingDown();
120 } // namespace Internal
124 #endif // DALI_INTERNAL_EVENT_THREAD_SERVICES_H