mirror of
https://github.com/zhigang1992/react-native.git
synced 2026-06-19 08:41:15 +08:00
b9107084f7
Summary: A couple of small changes: 1. `onEnqueue` was decoupled from `enqueueEvent` for easier and unified overiding in subclasses (other methods will call `onEnqueue` soon); 2. `flushEvents` was decoupled from `onBeat` (we will put more stuff into `onBeat` soon). Reviewed By: mdvacca Differential Revision: D14205769 fbshipit-source-id: 574c2b2caaa6432bc7782b2f3bc147fa1fb82bd3
82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
/**
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
#include "EventQueue.h"
|
|
|
|
#include "EventEmitter.h"
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
EventQueue::EventQueue(
|
|
EventPipe eventPipe,
|
|
std::unique_ptr<EventBeat> eventBeat)
|
|
: eventPipe_(std::move(eventPipe)), eventBeat_(std::move(eventBeat)) {
|
|
eventBeat_->setBeatCallback(
|
|
std::bind(&EventQueue::onBeat, this, std::placeholders::_1));
|
|
}
|
|
|
|
void EventQueue::enqueueEvent(const RawEvent &rawEvent) const {
|
|
{
|
|
std::lock_guard<std::mutex> lock(queueMutex_);
|
|
queue_.push_back(rawEvent);
|
|
}
|
|
|
|
onEnqueue();
|
|
}
|
|
|
|
void EventQueue::onEnqueue() const {
|
|
// Default implementation does nothing.
|
|
}
|
|
|
|
void EventQueue::onBeat(jsi::Runtime &runtime) const {
|
|
flushEvents(runtime);
|
|
}
|
|
|
|
void EventQueue::flushEvents(jsi::Runtime &runtime) const {
|
|
std::vector<RawEvent> queue;
|
|
|
|
{
|
|
std::lock_guard<std::mutex> lock(queueMutex_);
|
|
|
|
if (queue_.size() == 0) {
|
|
return;
|
|
}
|
|
|
|
queue = std::move(queue_);
|
|
queue_.clear();
|
|
}
|
|
|
|
{
|
|
std::lock_guard<std::mutex> lock(EventEmitter::DispatchMutex());
|
|
|
|
for (const auto &event : queue) {
|
|
if (event.eventTarget) {
|
|
event.eventTarget->retain(runtime);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (const auto &event : queue) {
|
|
eventPipe_(
|
|
runtime, event.eventTarget.get(), event.type, event.payloadFactory);
|
|
}
|
|
|
|
// No need to lock `EventEmitter::DispatchMutex()` here.
|
|
// The mutex protects from a situation when the `instanceHandle` can be
|
|
// deallocated during accessing, but that's impossible at this point because
|
|
// we have a strong pointer to it.
|
|
for (const auto &event : queue) {
|
|
if (event.eventTarget) {
|
|
event.eventTarget->release(runtime);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|