mirror of
https://github.com/compiler-explorer/compiler-explorer.git
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f2c1e0bd31
* The Grand Reformat - everything made prettier...literally - some tweaks to include a few more files, including documentation - minor changes to format style - some tiny `// prettier-ignore` changes to keep a few things the way we like them - a couple of super minor tweaks to embedded document types to ensure they format correctly
70 lines
2.7 KiB
JavaScript
70 lines
2.7 KiB
JavaScript
// Copyright (c) 2020, Compiler Explorer Authors
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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import {executionAsyncId} from 'async_hooks';
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import {default as Queue} from 'p-queue';
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export class CompilationQueue {
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constructor(concurrency, timeout) {
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this._running = new Set();
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this._queue = new Queue({
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concurrency,
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timeout,
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throwOnTimeout: true,
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});
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}
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static fromProps(ceProps) {
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return new CompilationQueue(ceProps('maxConcurrentCompiles', 1), ceProps('compilationEnvTimeoutMs'));
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}
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enqueue(job) {
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const enqueueAsyncId = executionAsyncId();
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// If we're asked to enqueue a job when we're already in a async queued job context, just run it.
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// This prevents a deadlock.
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if (this._running.has(enqueueAsyncId)) return job();
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return this._queue.add(() => {
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const jobAsyncId = executionAsyncId();
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if (this._running.has(jobAsyncId)) throw new Error('somehow we entered the context twice');
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try {
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this._running.add(jobAsyncId);
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return job();
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} finally {
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this._running.delete(jobAsyncId);
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}
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});
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}
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status() {
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const pending = this._queue.pending;
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const size = this._queue.size;
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return {
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busy: pending > 0 || size > 0,
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pending,
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size,
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};
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}
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}
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