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f71e3c4997
* Unconditionally use the compilation queue and re-enable MS compilers * Always use the compilation queue, which ensures we don't execute more native apps thn are configured, especially while we're starting up. * Guard the compilation queue from enqueueing stuff that was already executing in a queue context. This is to prevent deadlock though it's not always a problem (it's only if the caller awaits the job, which is often the case). Should mitigate the issues we had on Sep 30 2021, where nodes were having trouble starting up due to the large amount of JVM-based compilers. See #2977
74 lines
2.7 KiB
JavaScript
74 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(
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ceProps('maxConcurrentCompiles', 1),
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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))
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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))
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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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