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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { ChildProcess } from 'child_process';
import { promisify } from 'util';
import * as treekill from 'tree-kill';
import { Logger } from './logger';
export async function teardown(p: ChildProcess, logger: Logger, retryCount = 3): Promise<void> {
const pid = p.pid;
if (typeof pid !== 'number') {
return;
}
let retries = 0;
while (retries < retryCount) {
retries++;
try {
return await promisify(treekill)(pid);
} catch (error) {
try {
process.kill(pid, 0); // throws an exception if the process doesn't exist anymore
logger.log(`Error tearing down process (pid: ${pid}, attempt: ${retries}): ${error}`);
} catch (error) {
return; // Expected when process is gone
}
}
}
logger.log(`Gave up tearing down process client after ${retries} attempts...`);
}
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