import { existsSync } from 'node:fs'
+import cluster from 'node:cluster'
+import { SHARE_ENV, Worker, type WorkerOptions } from 'node:worker_threads'
+import { env } from 'node:process'
import { average, isPlainObject, max, median, min } from '../utils'
+import type { MessageValue, Task } from '../utility-types'
import {
type MeasurementStatisticsRequirements,
WorkerChoiceStrategies,
type WorkerChoiceStrategy
} from './selection-strategies/selection-strategies-types'
import type { TasksQueueOptions } from './pool'
-import type { IWorker, MeasurementStatistics } from './worker'
+import {
+ type IWorker,
+ type IWorkerNode,
+ type MeasurementStatistics,
+ type WorkerNodeOptions,
+ type WorkerType,
+ WorkerTypes,
+ type WorkerUsage
+} from './worker'
+import type { WorkerChoiceStrategyContext } from './selection-strategies/worker-choice-strategy-context'
+
+export const getDefaultTasksQueueOptions = (
+ poolMaxSize: number
+): Required<TasksQueueOptions> => {
+ return {
+ size: Math.pow(poolMaxSize, 2),
+ concurrency: 1,
+ taskStealing: true,
+ tasksStealingOnBackPressure: true,
+ tasksFinishedTimeout: 1000
+ }
+}
export const checkFilePath = (filePath: string): void => {
- if (
- filePath == null ||
- typeof filePath !== 'string' ||
- (typeof filePath === 'string' && filePath.trim().length === 0)
- ) {
- throw new Error('Please specify a file with a worker implementation')
+ if (filePath == null) {
+ throw new TypeError('The worker file path must be specified')
+ }
+ if (typeof filePath !== 'string') {
+ throw new TypeError('The worker file path must be a string')
}
if (!existsSync(filePath)) {
throw new Error(`Cannot find the worker file '${filePath}'`)
}
}
-export const checkWorkerNodeArguments = <Worker extends IWorker>(
- worker: Worker,
- tasksQueueBackPressureSize: number
+export const checkWorkerNodeArguments = (
+ type: WorkerType,
+ filePath: string,
+ opts: WorkerNodeOptions
): void => {
- if (worker == null) {
- throw new TypeError('Cannot construct a worker node without a worker')
+ if (type == null) {
+ throw new TypeError('Cannot construct a worker node without a worker type')
+ }
+ if (!Object.values(WorkerTypes).includes(type)) {
+ throw new TypeError(
+ `Cannot construct a worker node with an invalid worker type '${type}'`
+ )
+ }
+ checkFilePath(filePath)
+ if (opts == null) {
+ throw new TypeError(
+ 'Cannot construct a worker node without worker node options'
+ )
+ }
+ if (!isPlainObject(opts)) {
+ throw new TypeError(
+ 'Cannot construct a worker node with invalid options: must be a plain object'
+ )
}
- if (tasksQueueBackPressureSize == null) {
+ if (opts.tasksQueueBackPressureSize == null) {
throw new TypeError(
- 'Cannot construct a worker node without a tasks queue back pressure size'
+ 'Cannot construct a worker node without a tasks queue back pressure size option'
)
}
- if (!Number.isSafeInteger(tasksQueueBackPressureSize)) {
+ if (!Number.isSafeInteger(opts.tasksQueueBackPressureSize)) {
throw new TypeError(
- 'Cannot construct a worker node with a tasks queue back pressure size that is not an integer'
+ 'Cannot construct a worker node with a tasks queue back pressure size option that is not an integer'
)
}
- if (tasksQueueBackPressureSize <= 0) {
+ if (opts.tasksQueueBackPressureSize <= 0) {
throw new RangeError(
- 'Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer'
+ 'Cannot construct a worker node with a tasks queue back pressure size option that is not a positive integer'
)
}
}
* @param numberOfMeasurements - The number of measurements.
* @internal
*/
-export const updateMeasurementStatistics = (
+const updateMeasurementStatistics = (
measurementStatistics: MeasurementStatistics,
measurementRequirements: MeasurementStatisticsRequirements,
measurementValue: number
}
}
}
+if (env.NODE_ENV === 'test') {
+ // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+ exports.updateMeasurementStatistics = updateMeasurementStatistics
+}
+
+export const updateWaitTimeWorkerUsage = <
+ Worker extends IWorker,
+ Data = unknown,
+ Response = unknown
+>(
+ workerChoiceStrategyContext: WorkerChoiceStrategyContext<
+ Worker,
+ Data,
+ Response
+ >,
+ workerUsage: WorkerUsage,
+ task: Task<Data>
+ ): void => {
+ const timestamp = performance.now()
+ const taskWaitTime = timestamp - (task.timestamp ?? timestamp)
+ updateMeasurementStatistics(
+ workerUsage.waitTime,
+ workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime,
+ taskWaitTime
+ )
+}
+
+export const updateTaskStatisticsWorkerUsage = <Response = unknown>(
+ workerUsage: WorkerUsage,
+ message: MessageValue<Response>
+): void => {
+ const workerTaskStatistics = workerUsage.tasks
+ if (
+ workerTaskStatistics.executing != null &&
+ workerTaskStatistics.executing > 0
+ ) {
+ --workerTaskStatistics.executing
+ }
+ if (message.workerError == null) {
+ ++workerTaskStatistics.executed
+ } else {
+ ++workerTaskStatistics.failed
+ }
+}
+
+export const updateRunTimeWorkerUsage = <
+ Worker extends IWorker,
+ Data = unknown,
+ Response = unknown
+>(
+ workerChoiceStrategyContext: WorkerChoiceStrategyContext<
+ Worker,
+ Data,
+ Response
+ >,
+ workerUsage: WorkerUsage,
+ message: MessageValue<Response>
+ ): void => {
+ if (message.workerError != null) {
+ return
+ }
+ updateMeasurementStatistics(
+ workerUsage.runTime,
+ workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime,
+ message.taskPerformance?.runTime ?? 0
+ )
+}
+
+export const updateEluWorkerUsage = <
+ Worker extends IWorker,
+ Data = unknown,
+ Response = unknown
+>(
+ workerChoiceStrategyContext: WorkerChoiceStrategyContext<
+ Worker,
+ Data,
+ Response
+ >,
+ workerUsage: WorkerUsage,
+ message: MessageValue<Response>
+ ): void => {
+ if (message.workerError != null) {
+ return
+ }
+ const eluTaskStatisticsRequirements: MeasurementStatisticsRequirements =
+ workerChoiceStrategyContext.getTaskStatisticsRequirements().elu
+ updateMeasurementStatistics(
+ workerUsage.elu.active,
+ eluTaskStatisticsRequirements,
+ message.taskPerformance?.elu?.active ?? 0
+ )
+ updateMeasurementStatistics(
+ workerUsage.elu.idle,
+ eluTaskStatisticsRequirements,
+ message.taskPerformance?.elu?.idle ?? 0
+ )
+ if (eluTaskStatisticsRequirements.aggregate) {
+ if (message.taskPerformance?.elu != null) {
+ if (workerUsage.elu.utilization != null) {
+ workerUsage.elu.utilization =
+ (workerUsage.elu.utilization +
+ message.taskPerformance.elu.utilization) /
+ 2
+ } else {
+ workerUsage.elu.utilization = message.taskPerformance.elu.utilization
+ }
+ }
+ }
+}
+
+export const createWorker = <Worker extends IWorker>(
+ type: WorkerType,
+ filePath: string,
+ opts: { env?: Record<string, unknown>, workerOptions?: WorkerOptions }
+): Worker => {
+ switch (type) {
+ case WorkerTypes.thread:
+ return new Worker(filePath, {
+ env: SHARE_ENV,
+ ...opts?.workerOptions
+ }) as unknown as Worker
+ case WorkerTypes.cluster:
+ return cluster.fork(opts?.env) as unknown as Worker
+ default:
+ // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
+ throw new Error(`Unknown worker type '${type}'`)
+ }
+}
+
+export const waitWorkerNodeEvents = async <
+ Worker extends IWorker,
+ Data = unknown
+>(
+ workerNode: IWorkerNode<Worker, Data>,
+ workerNodeEvent: string,
+ numberOfEventsToWait: number,
+ timeout: number
+): Promise<number> => {
+ return await new Promise<number>(resolve => {
+ let events = 0
+ if (numberOfEventsToWait === 0) {
+ resolve(events)
+ return
+ }
+ workerNode.on(workerNodeEvent, () => {
+ ++events
+ if (events === numberOfEventsToWait) {
+ resolve(events)
+ }
+ })
+ if (timeout > 0) {
+ setTimeout(() => {
+ resolve(events)
+ }, timeout)
+ }
+ })
+}
repositories / poolifier.git / blobdiff