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| author | littleblack111 <littleblack11111@gmail.com> | 2026-05-18 23:10:59 +0800 |
|---|---|---|
| committer | littleblack111 <littleblack11111@gmail.com> | 2026-05-18 23:41:44 +0800 |
| commit | fc87c009806dcc98867f6b58efe29b042aa01dee (patch) | |
| tree | 8f59b3f4a5b66e9dfef2d40c8d318e258a521228 /node_modules/fastq/queue.js | |
| parent | 3336b2356ee6152d9c6ae59bd9b87ccbc0958407 (diff) | |
node: updatemain
Diffstat (limited to 'node_modules/fastq/queue.js')
| -rw-r--r-- | node_modules/fastq/queue.js | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/node_modules/fastq/queue.js b/node_modules/fastq/queue.js deleted file mode 100644 index a9d0fa95..00000000 --- a/node_modules/fastq/queue.js +++ /dev/null @@ -1,311 +0,0 @@ -'use strict' - -/* eslint-disable no-var */ - -var reusify = require('reusify') - -function fastqueue (context, worker, _concurrency) { - if (typeof context === 'function') { - _concurrency = worker - worker = context - context = null - } - - if (!(_concurrency >= 1)) { - throw new Error('fastqueue concurrency must be equal to or greater than 1') - } - - var cache = reusify(Task) - var queueHead = null - var queueTail = null - var _running = 0 - var errorHandler = null - - var self = { - push: push, - drain: noop, - saturated: noop, - pause: pause, - paused: false, - - get concurrency () { - return _concurrency - }, - set concurrency (value) { - if (!(value >= 1)) { - throw new Error('fastqueue concurrency must be equal to or greater than 1') - } - _concurrency = value - - if (self.paused) return - for (; queueHead && _running < _concurrency;) { - _running++ - release() - } - }, - - running: running, - resume: resume, - idle: idle, - length: length, - getQueue: getQueue, - unshift: unshift, - empty: noop, - kill: kill, - killAndDrain: killAndDrain, - error: error - } - - return self - - function running () { - return _running - } - - function pause () { - self.paused = true - } - - function length () { - var current = queueHead - var counter = 0 - - while (current) { - current = current.next - counter++ - } - - return counter - } - - function getQueue () { - var current = queueHead - var tasks = [] - - while (current) { - tasks.push(current.value) - current = current.next - } - - return tasks - } - - function resume () { - if (!self.paused) return - self.paused = false - if (queueHead === null) { - _running++ - release() - return - } - for (; queueHead && _running < _concurrency;) { - _running++ - release() - } - } - - function idle () { - return _running === 0 && self.length() === 0 - } - - function push (value, done) { - var current = cache.get() - - current.context = context - current.release = release - current.value = value - current.callback = done || noop - current.errorHandler = errorHandler - - if (_running >= _concurrency || self.paused) { - if (queueTail) { - queueTail.next = current - queueTail = current - } else { - queueHead = current - queueTail = current - self.saturated() - } - } else { - _running++ - worker.call(context, current.value, current.worked) - } - } - - function unshift (value, done) { - var current = cache.get() - - current.context = context - current.release = release - current.value = value - current.callback = done || noop - current.errorHandler = errorHandler - - if (_running >= _concurrency || self.paused) { - if (queueHead) { - current.next = queueHead - queueHead = current - } else { - queueHead = current - queueTail = current - self.saturated() - } - } else { - _running++ - worker.call(context, current.value, current.worked) - } - } - - function release (holder) { - if (holder) { - cache.release(holder) - } - var next = queueHead - if (next && _running <= _concurrency) { - if (!self.paused) { - if (queueTail === queueHead) { - queueTail = null - } - queueHead = next.next - next.next = null - worker.call(context, next.value, next.worked) - if (queueTail === null) { - self.empty() - } - } else { - _running-- - } - } else if (--_running === 0) { - self.drain() - } - } - - function kill () { - queueHead = null - queueTail = null - self.drain = noop - } - - function killAndDrain () { - queueHead = null - queueTail = null - self.drain() - self.drain = noop - } - - function error (handler) { - errorHandler = handler - } -} - -function noop () {} - -function Task () { - this.value = null - this.callback = noop - this.next = null - this.release = noop - this.context = null - this.errorHandler = null - - var self = this - - this.worked = function worked (err, result) { - var callback = self.callback - var errorHandler = self.errorHandler - var val = self.value - self.value = null - self.callback = noop - if (self.errorHandler) { - errorHandler(err, val) - } - callback.call(self.context, err, result) - self.release(self) - } -} - -function queueAsPromised (context, worker, _concurrency) { - if (typeof context === 'function') { - _concurrency = worker - worker = context - context = null - } - - function asyncWrapper (arg, cb) { - worker.call(this, arg) - .then(function (res) { - cb(null, res) - }, cb) - } - - var queue = fastqueue(context, asyncWrapper, _concurrency) - - var pushCb = queue.push - var unshiftCb = queue.unshift - - queue.push = push - queue.unshift = unshift - queue.drained = drained - - return queue - - function push (value) { - var p = new Promise(function (resolve, reject) { - pushCb(value, function (err, result) { - if (err) { - reject(err) - return - } - resolve(result) - }) - }) - - // Let's fork the promise chain to - // make the error bubble up to the user but - // not lead to a unhandledRejection - p.catch(noop) - - return p - } - - function unshift (value) { - var p = new Promise(function (resolve, reject) { - unshiftCb(value, function (err, result) { - if (err) { - reject(err) - return - } - resolve(result) - }) - }) - - // Let's fork the promise chain to - // make the error bubble up to the user but - // not lead to a unhandledRejection - p.catch(noop) - - return p - } - - function drained () { - if (queue.idle()) { - return new Promise(function (resolve) { - resolve() - }) - } - - var previousDrain = queue.drain - - var p = new Promise(function (resolve) { - queue.drain = function () { - previousDrain() - resolve() - } - }) - - return p - } -} - -module.exports = fastqueue -module.exports.promise = queueAsPromised |
