mirror of https://gitee.com/openkylin/nodejs.git
58 lines
1.9 KiB
JavaScript
58 lines
1.9 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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require('../common');
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const assert = require('assert');
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// setImmediate should run clear its queued cbs once per event loop turn
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// but immediates queued while processing the current queue should happen
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// on the next turn of the event loop.
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// hit should be the exact same size of QUEUE, if we're letting things
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// recursively add to the immediate QUEUE hit will be > QUEUE
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let ticked = false;
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let hit = 0;
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const QUEUE = 10;
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function run() {
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if (hit === 0) {
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setTimeout(() => { ticked = true; }, 1);
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const now = Date.now();
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while (Date.now() - now < 2);
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}
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if (ticked) return;
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hit += 1;
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setImmediate(run);
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}
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for (let i = 0; i < QUEUE; i++)
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setImmediate(run);
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process.on('exit', function() {
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console.log('hit', hit);
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assert.strictEqual(hit, QUEUE);
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});
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