| /** |
| * 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 schedule = require("./schedule.js"); |
| var Queue = require("./queue.js"); |
| var errorObj = require("./util.js").errorObj; |
| var tryCatch1 = require("./util.js").tryCatch1; |
| var process = require("./global.js").process; |
| |
| 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$invokeLater(fn, receiver, arg) { |
| if (process !== void 0 && |
| process.domain != null && |
| !fn.domain) { |
| fn = process.domain.bind(fn); |
| } |
| this._lateBuffer.push(fn, receiver, arg); |
| this._queueTick(); |
| }; |
| |
| Async.prototype.invoke = function Async$invoke(fn, receiver, arg) { |
| if (process !== void 0 && |
| process.domain != null && |
| !fn.domain) { |
| fn = process.domain.bind(fn); |
| } |
| 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(); |
| if (fn.domain != null) { |
| fn.domain.emit("error", res.e); |
| } |
| else { |
| 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(); |