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Fix send / remove timing bug in Dispatcher #6756

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Fix send / remove timing bug in Dispatcher #6756

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4 changes: 4 additions & 0 deletions src/util/dispatcher.js
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,10 @@ class Dispatcher {
* @returns The ID of the worker to which the message was sent.
*/
send(type: string, data: mixed, callback?: ?Function, targetID?: number): number {
if (this.actors.length === 0) {
// an async send call is getting executed but remove has been called
return -1;
}
if (typeof targetID !== 'number' || isNaN(targetID)) {
// Use round robin to send requests to web workers.
targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
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