diff options
Diffstat (limited to 'build/internal/queue.js')
| -rw-r--r-- | build/internal/queue.js | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/build/internal/queue.js b/build/internal/queue.js deleted file mode 100644 index 72fc685..0000000 --- a/build/internal/queue.js +++ /dev/null @@ -1,166 +0,0 @@ -'use strict'; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.default = queue; - -var _arrayEach = require('lodash/_arrayEach'); - -var _arrayEach2 = _interopRequireDefault(_arrayEach); - -var _arrayMap = require('lodash/_arrayMap'); - -var _arrayMap2 = _interopRequireDefault(_arrayMap); - -var _isArray = require('lodash/isArray'); - -var _isArray2 = _interopRequireDefault(_isArray); - -var _noop = require('lodash/noop'); - -var _noop2 = _interopRequireDefault(_noop); - -var _baseProperty = require('lodash/_baseProperty'); - -var _baseProperty2 = _interopRequireDefault(_baseProperty); - -var _onlyOnce = require('./onlyOnce'); - -var _onlyOnce2 = _interopRequireDefault(_onlyOnce); - -var _setImmediate = require('./setImmediate'); - -var _setImmediate2 = _interopRequireDefault(_setImmediate); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } - -function queue(worker, concurrency, payload) { - if (concurrency == null) { - concurrency = 1; - } else if (concurrency === 0) { - throw new Error('Concurrency must not be zero'); - } - function _insert(q, data, pos, callback) { - if (callback != null && typeof callback !== 'function') { - throw new Error('task callback must be a function'); - } - q.started = true; - if (!(0, _isArray2.default)(data)) { - data = [data]; - } - if (data.length === 0 && q.idle()) { - // call drain immediately if there are no tasks - return (0, _setImmediate2.default)(function () { - q.drain(); - }); - } - (0, _arrayEach2.default)(data, function (task) { - var item = { - data: task, - callback: callback || _noop2.default - }; - - if (pos) { - q.tasks.unshift(item); - } else { - q.tasks.push(item); - } - - if (q.tasks.length === q.concurrency) { - q.saturated(); - } - }); - (0, _setImmediate2.default)(q.process); - } - function _next(q, tasks) { - return function () { - workers -= 1; - - var removed = false; - var args = arguments; - (0, _arrayEach2.default)(tasks, function (task) { - (0, _arrayEach2.default)(workersList, function (worker, index) { - if (worker === task && !removed) { - workersList.splice(index, 1); - removed = true; - } - }); - - task.callback.apply(task, args); - }); - if (q.tasks.length + workers === 0) { - q.drain(); - } - q.process(); - }; - } - - var workers = 0; - var workersList = []; - var q = { - tasks: [], - concurrency: concurrency, - payload: payload, - saturated: _noop2.default, - empty: _noop2.default, - drain: _noop2.default, - started: false, - paused: false, - push: function (data, callback) { - _insert(q, data, false, callback); - }, - kill: function () { - q.drain = _noop2.default; - q.tasks = []; - }, - unshift: function (data, callback) { - _insert(q, data, true, callback); - }, - process: function () { - while (!q.paused && workers < q.concurrency && q.tasks.length) { - - var tasks = q.payload ? q.tasks.splice(0, q.payload) : q.tasks.splice(0, q.tasks.length); - - var data = (0, _arrayMap2.default)(tasks, (0, _baseProperty2.default)('data')); - - if (q.tasks.length === 0) { - q.empty(); - } - workers += 1; - workersList.push(tasks[0]); - var cb = (0, _onlyOnce2.default)(_next(q, tasks)); - worker(data, cb); - } - }, - length: function () { - return q.tasks.length; - }, - running: function () { - return workers; - }, - workersList: function () { - return workersList; - }, - idle: function () { - return q.tasks.length + workers === 0; - }, - pause: function () { - q.paused = true; - }, - resume: function () { - if (q.paused === false) { - return; - } - q.paused = false; - var resumeCount = Math.min(q.concurrency, q.tasks.length); - // Need to call q.process once per concurrent - // worker to preserve full concurrency after pause - for (var w = 1; w <= resumeCount; w++) { - (0, _setImmediate2.default)(q.process); - } - } - }; - return q; -} -module.exports = exports['default'];
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