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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
49 lines
1.1 KiB
C++
49 lines
1.1 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 <memory>
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#include <fabric/core/ReactPrimitives.h>
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#include <fabric/core/EventPrimitives.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 EventDispatcher;
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using SharedEventDispatcher = std::shared_ptr<const EventDispatcher>;
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/*
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* Abstract class that represent event-delivery infrastructure.
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* Particular `EventEmitter` clases use an object of this class to invoke
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* events.
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*/
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class EventDispatcher {
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public:
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virtual EventTarget createEventTarget(const InstanceHandle &instanceHandle) const = 0;
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/*
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* Dispatches "raw" event using some event-delivery infrastructure.
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*/
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virtual 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 = 0;
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virtual void releaseEventTarget(const EventTarget &eventTarget) const = 0;
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};
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} // namespace react
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} // namespace facebook
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