mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
ffa533a19d
Summary: Changelog: [internal] My suggestion is to simplify event dispatching to only two options, synchronous and asynchronous. Why? - Fabric has only been using one queue, `AsynchronousBatched`. - Batching happens even on `AsynchronousUnbatched`. It just batches events until JS thread starts processing them instead of waiting for the main run loop. - It will make it easier to reason about the code in the future once we start utilising different priorities for Concurrent Mode. Reviewed By: JoshuaGross Differential Revision: D28603472 fbshipit-source-id: 14e3a9c15a012c550dc16a044c31d722051a2bdc
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include "EventDispatcher.h"
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#include <react/renderer/core/StateUpdate.h>
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#include "BatchedEventQueue.h"
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#include "RawEvent.h"
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#include "UnbatchedEventQueue.h"
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namespace facebook {
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namespace react {
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EventDispatcher::EventDispatcher(
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EventPipe const &eventPipe,
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StatePipe const &statePipe,
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EventBeat::Factory const &synchonousEventBeatFactory,
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EventBeat::Factory const &asynchonousEventBeatFactory,
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EventBeat::SharedOwnerBox const &ownerBox,
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bool unbatchedQueuesOnly)
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: synchronousUnbatchedQueue_(std::make_unique<UnbatchedEventQueue>(
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eventPipe,
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statePipe,
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synchonousEventBeatFactory(ownerBox))),
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synchronousBatchedQueue_(std::make_unique<BatchedEventQueue>(
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eventPipe,
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statePipe,
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synchonousEventBeatFactory(ownerBox))),
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asynchronousUnbatchedQueue_(std::make_unique<UnbatchedEventQueue>(
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eventPipe,
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statePipe,
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asynchonousEventBeatFactory(ownerBox))),
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asynchronousBatchedQueue_(std::make_unique<BatchedEventQueue>(
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eventPipe,
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statePipe,
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asynchonousEventBeatFactory(ownerBox))),
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unbatchedQueuesOnly_(unbatchedQueuesOnly) {}
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void EventDispatcher::dispatchEvent(RawEvent &&rawEvent, EventPriority priority)
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const {
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getEventQueue(priority).enqueueEvent(std::move(rawEvent));
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}
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void EventDispatcher::dispatchStateUpdate(
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StateUpdate &&stateUpdate,
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EventPriority priority) const {
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getEventQueue(priority).enqueueStateUpdate(std::move(stateUpdate));
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}
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void EventDispatcher::dispatchUniqueEvent(RawEvent &&rawEvent) const {
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if (unbatchedQueuesOnly_) {
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asynchronousUnbatchedQueue_->enqueueUniqueEvent(std::move(rawEvent));
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} else {
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asynchronousBatchedQueue_->enqueueUniqueEvent(std::move(rawEvent));
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}
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}
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const EventQueue &EventDispatcher::getEventQueue(EventPriority priority) const {
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if (unbatchedQueuesOnly_) {
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switch (priority) {
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case EventPriority::SynchronousUnbatched:
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return *synchronousUnbatchedQueue_;
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case EventPriority::SynchronousBatched:
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return *synchronousUnbatchedQueue_;
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case EventPriority::AsynchronousUnbatched:
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return *asynchronousUnbatchedQueue_;
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case EventPriority::AsynchronousBatched:
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return *asynchronousUnbatchedQueue_;
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}
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} else {
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switch (priority) {
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case EventPriority::SynchronousUnbatched:
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return *synchronousUnbatchedQueue_;
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case EventPriority::SynchronousBatched:
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return *synchronousBatchedQueue_;
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case EventPriority::AsynchronousUnbatched:
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return *asynchronousUnbatchedQueue_;
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case EventPriority::AsynchronousBatched:
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return *asynchronousBatchedQueue_;
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}
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}
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}
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} // namespace react
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} // namespace facebook
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