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workers.js
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56 lines (46 loc) · 1.6 KB
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
import { addThreadEventListeners } from "./events";
import type { TabTarget } from "./types";
export function supportsWorkers(tabTarget: TabTarget) {
return tabTarget.isBrowsingContext || tabTarget.isContentProcess;
}
export async function updateWorkerClients({
tabTarget,
debuggerClient,
threadClient,
workerClients,
options
}: Object) {
if (!supportsWorkers(tabTarget)) {
return {};
}
const newWorkerClients = {};
const { workers } = await tabTarget.listWorkers();
for (const workerTargetFront of workers) {
try {
await workerTargetFront.attach();
const threadActorID = workerTargetFront._threadActor;
if (workerClients[threadActorID]) {
newWorkerClients[threadActorID] = workerClients[threadActorID];
} else {
const [, workerThread] = await workerTargetFront.attachThread(options);
workerThread.resume();
addThreadEventListeners(workerThread);
const consoleFront = await workerTargetFront.getFront("console");
await consoleFront.startListeners([]);
newWorkerClients[workerThread.actor] = {
url: workerTargetFront.url,
thread: workerThread,
console: consoleFront
};
}
} catch (e) {
// If any of the workers have terminated since the list command initiated
// then we will get errors. Ignore these.
}
}
return newWorkerClients;
}