File size: 3,244 Bytes
5fae594 |
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 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 |
/**
* Copyright (c) 2014 Petka Antonov
*
* 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:</p>
*
* 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.
*
*/
"use strict";
var ASSERT = require("./assert.js");
var schedule = require("./schedule.js");
var Queue = require("./queue.js");
var errorObj = require("./util.js").errorObj;
var tryCatch1 = require("./util.js").tryCatch1;
function Async() {
this._isTickUsed = false;
this._length = 0;
this._lateBuffer = new Queue();
this._functionBuffer = new Queue(25000 * 3);
var self = this;
this.consumeFunctionBuffer = function Async$consumeFunctionBuffer() {
self._consumeFunctionBuffer();
};
}
Async.prototype.haveItemsQueued = function Async$haveItemsQueued() {
return this._length > 0;
};
Async.prototype.invokeLater = function Async$invokeLater(fn, receiver, arg) {
this._lateBuffer.push(fn, receiver, arg);
this._queueTick();
};
Async.prototype.invoke = function Async$invoke(fn, receiver, arg) {
var functionBuffer = this._functionBuffer;
functionBuffer.push(fn, receiver, arg);
this._length = functionBuffer.length();
this._queueTick();
};
Async.prototype._consumeFunctionBuffer =
function Async$_consumeFunctionBuffer() {
var functionBuffer = this._functionBuffer;
while(functionBuffer.length() > 0) {
var fn = functionBuffer.shift();
var receiver = functionBuffer.shift();
var arg = functionBuffer.shift();
fn.call(receiver, arg);
}
this._reset();
this._consumeLateBuffer();
};
Async.prototype._consumeLateBuffer = function Async$_consumeLateBuffer() {
var buffer = this._lateBuffer;
while(buffer.length() > 0) {
var fn = buffer.shift();
var receiver = buffer.shift();
var arg = buffer.shift();
var res = tryCatch1(fn, receiver, arg);
if (res === errorObj) {
this._queueTick();
throw res.e;
}
}
};
Async.prototype._queueTick = function Async$_queue() {
if (!this._isTickUsed) {
schedule(this.consumeFunctionBuffer);
this._isTickUsed = true;
}
};
Async.prototype._reset = function Async$_reset() {
this._isTickUsed = false;
this._length = 0;
};
module.exports = new Async();
|