File: test-next-tick-intentional-starvation.js

package info (click to toggle)
nodejs 0.10.29~dfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 32,760 kB
  • ctags: 58,506
  • sloc: cpp: 330,356; ansic: 47,440; python: 12,756; sh: 1,365; makefile: 665; lisp: 222; ruby: 76; xml: 16; awk: 10
file content (64 lines) | stat: -rw-r--r-- 2,055 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
// 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.

var common = require('../common');
var assert = require('assert');

// 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.

// WARNING: unsafe!
process.maxTickDepth = Infinity;

var ran = false;
var starved = false;
var start = +new Date();
var timerRan = false;

function spin() {
  ran = true;
  var now = +new Date();
  if (now - start > 100) {
    console.log('The timer is starving, just as we planned.');
    starved = true;

    // now let it out.
    return;
  }

  process.nextTick(spin);
}

function onTimeout() {
  if (!starved) throw new Error('The timer escaped!');
  console.log('The timer ran once the ban was lifted');
  timerRan = true;
}

spin();
setTimeout(onTimeout, 50);

process.on('exit', function() {
  assert.ok(ran);
  assert.ok(starved);
  assert.ok(timerRan);
});