b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
42 lines
895 B
JavaScript
Executable file
42 lines
895 B
JavaScript
Executable file
'use strict';
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define(function(require) {
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/**
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* A serial queue of functions. Call `.push()` to add a function to
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* the task; when each function completes (as a result of calling
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* 'done()'), the next item in the queue will be executed.
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*/
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function AsyncQueue() {
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this.queue = [];
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this.current = null;
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}
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AsyncQueue.prototype = {
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/**
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* Add a function to the execution queue. It should accept one
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* argument, a 'done' callback.
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*/
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push: function(fn) {
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if (!this.current) {
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this._startTask(fn);
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} else {
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this.queue.push(fn);
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}
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},
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_startTask: function(fn) {
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this.current = fn;
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fn(this._nextTask.bind(this));
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},
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_nextTask: function() {
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this.current = null;
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if (this.queue.length) {
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this._startTask(this.queue.shift());
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}
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}
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};
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return AsyncQueue;
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});
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