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https://github.com/status-im/react-native.git
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20a8673b48
Summary: @public There are some race conditions between VM objects getting deallocated and the instanceHandle held by the eventEmitter can point to deallocated memory space, causing undefined behavior like a crash. For now, keep a strong ref to the eventTarget inside EventEmitter to avoid that scenario. This is a temporary workaround. Reviewed By: shergin Differential Revision: D8576785 fbshipit-source-id: 87ef36f716270ceca906b32bb86e0046ceaca19e
54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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#pragma once
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#include <fabric/core/EventDispatcher.h>
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#include <fabric/core/EventPrimitives.h>
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#include <fabric/uimanager/FabricUIManager.h>
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#include <folly/dynamic.h>
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namespace facebook {
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namespace react {
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class SchedulerEventDispatcher;
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using SharedSchedulerEventDispatcher = std::shared_ptr<const SchedulerEventDispatcher>;
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/*
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* Concrete EventDispatcher.
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*/
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class SchedulerEventDispatcher final:
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public EventDispatcher {
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public:
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void setUIManager(std::shared_ptr<const FabricUIManager> uiManager) const;
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#pragma mark - EventDispatcher
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EventTarget createEventTarget(const InstanceHandle &instanceHandle) const override;
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void dispatchEvent(
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const EventTarget &eventTarget,
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const std::string &type,
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const folly::dynamic &payload,
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const EventPriority &priority
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) const override;
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void releaseEventTarget(const EventTarget &eventTarget) const override;
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private:
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// TODO: consider using std::weak_ptr<> instead for better memory management.
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mutable std::shared_ptr<const FabricUIManager> uiManager_;
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};
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} // namespace react
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} // namespace facebook
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