diff options
Diffstat (limited to 'deps/node/deps/npm/node_modules/run-queue/queue.js')
-rw-r--r-- | deps/node/deps/npm/node_modules/run-queue/queue.js | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/deps/node/deps/npm/node_modules/run-queue/queue.js b/deps/node/deps/npm/node_modules/run-queue/queue.js deleted file mode 100644 index 500bf293..00000000 --- a/deps/node/deps/npm/node_modules/run-queue/queue.js +++ /dev/null @@ -1,95 +0,0 @@ -'use strict' -module.exports = RunQueue - -var validate = require('aproba') - -function RunQueue (opts) { - validate('Z|O', [opts]) - if (!opts) opts = {} - this.finished = false - this.inflight = 0 - this.maxConcurrency = opts.maxConcurrency || 1 - this.queued = 0 - this.queue = [] - this.currentPrio = null - this.currentQueue = null - this.Promise = opts.Promise || global.Promise - this.deferred = {} -} - -RunQueue.prototype = {} - -RunQueue.prototype.run = function () { - if (arguments.length !== 0) throw new Error('RunQueue.run takes no arguments') - var self = this - var deferred = this.deferred - if (!deferred.promise) { - deferred.promise = new this.Promise(function (resolve, reject) { - deferred.resolve = resolve - deferred.reject = reject - self._runQueue() - }) - } - return deferred.promise -} - -RunQueue.prototype._runQueue = function () { - var self = this - - while ((this.inflight < this.maxConcurrency) && this.queued) { - if (!this.currentQueue || this.currentQueue.length === 0) { - // wait till the current priority is entirely processed before - // starting a new one - if (this.inflight) return - var prios = Object.keys(this.queue) - for (var ii = 0; ii < prios.length; ++ii) { - var prioQueue = this.queue[prios[ii]] - if (prioQueue.length) { - this.currentQueue = prioQueue - this.currentPrio = prios[ii] - break - } - } - } - - --this.queued - ++this.inflight - var next = this.currentQueue.shift() - var args = next.args || [] - - // we explicitly construct a promise here so that queue items can throw - // or immediately return to resolve - var queueEntry = new this.Promise(function (resolve) { - resolve(next.cmd.apply(null, args)) - }) - - queueEntry.then(function () { - --self.inflight - if (self.finished) return - if (self.queued <= 0 && self.inflight <= 0) { - self.finished = true - self.deferred.resolve() - } - self._runQueue() - }, function (err) { - self.finished = true - self.deferred.reject(err) - }) - } -} - -RunQueue.prototype.add = function (prio, cmd, args) { - if (this.finished) throw new Error("Can't add to a finished queue. Create a new queue.") - if (Math.abs(Math.floor(prio)) !== prio) throw new Error('Priorities must be a positive integer value.') - validate('NFA|NFZ', [prio, cmd, args]) - prio = Number(prio) - if (!this.queue[prio]) this.queue[prio] = [] - ++this.queued - this.queue[prio].push({cmd: cmd, args: args}) - // if this priority is higher than the one we're currently processing, - // switch back to processing its queue. - if (this.currentPrio > prio) { - this.currentQueue = this.queue[prio] - this.currentPrio = prio - } -} |