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nextTick: Handle tick callbacks after each tick
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// Copyright Joyent, Inc. and other Node contributors. | ||
// | ||
// Permission is hereby granted, free of charge, to any person obtaining a | ||
// copy of this software and associated documentation files (the | ||
// "Software"), to deal in the Software without restriction, including | ||
// without limitation the rights to use, copy, modify, merge, publish, | ||
// distribute, sublicense, and/or sell copies of the Software, and to permit | ||
// persons to whom the Software is furnished to do so, subject to the | ||
// following conditions: | ||
// | ||
// The above copyright notice and this permission notice shall be included | ||
// in all copies or substantial portions of the Software. | ||
// | ||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | ||
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | ||
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | ||
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | ||
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | ||
// USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
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var common = require('../common'); | ||
var assert = require('assert'); | ||
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// this is the inverse of test-next-tick-starvation. | ||
// it verifies that process.nextTick will *always* come before other | ||
// events, up to the limit of the process.maxTickDepth value. | ||
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// WARNING: unsafe! | ||
process.maxTickDepth = Infinity; | ||
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var ran = false; | ||
var starved = false; | ||
var start = +new Date(); | ||
var timerRan = false; | ||
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function spin() { | ||
ran = true; | ||
var now = +new Date(); | ||
if (now - start > 100) { | ||
console.log('The timer is starving, just as we planned.'); | ||
starved = true; | ||
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// now let it out. | ||
return; | ||
} | ||
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process.nextTick(spin); | ||
} | ||
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function onTimeout() { | ||
if (!starved) throw new Error('The timer escaped!'); | ||
console.log('The timer ran once the ban was lifted'); | ||
timerRan = true; | ||
} | ||
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spin(); | ||
setTimeout(onTimeout, 50); | ||
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process.on('exit', function() { | ||
assert.ok(ran); | ||
assert.ok(starved); | ||
assert.ok(timerRan); | ||
}); |
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