+import { getRandomValues } from 'node:crypto'
import * as os from 'node:os'
-import { getRandomValues, randomInt } from 'node:crypto'
-import { Worker as ClusterWorker } from 'node:cluster'
-import { Worker as ThreadWorker } from 'node:worker_threads'
-import { cpus } from 'node:os'
-import type {
- MeasurementStatisticsRequirements,
- WorkerChoiceStrategyOptions
-} from './pools/selection-strategies/selection-strategies-types.js'
+
+import type { TaskFunctionProperties } from './utility-types.js'
+import type { TaskFunctionObject } from './worker/task-functions.js'
import type { KillBehavior } from './worker/worker-options.js'
-import { type IWorker, type WorkerType, WorkerTypes } from './pools/worker.js'
-import type { IPool } from './pools/pool.js'
/**
* Default task name.
/* Intentionally empty */
})
-/**
- * Default measurement statistics requirements.
- */
-export const DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS: MeasurementStatisticsRequirements =
- {
- aggregate: false,
- average: false,
- median: false
- }
-
/**
* Returns safe host OS optimized estimate of the default amount of parallelism a pool should use.
* Always returns a value greater than zero.
- *
* @returns The host OS optimized maximum pool size.
*/
export const availableParallelism = (): number => {
return availableParallelism
}
-/**
- * Returns the worker type of the given worker.
- *
- * @param worker - The worker to get the type of.
- * @returns The worker type of the given worker.
- * @internal
- */
-export const getWorkerType = (worker: IWorker): WorkerType | undefined => {
- if (worker instanceof ThreadWorker) {
- return WorkerTypes.thread
- } else if (worker instanceof ClusterWorker) {
- return WorkerTypes.cluster
- }
-}
-
-/**
- * Returns the worker id of the given worker.
- *
- * @param worker - The worker to get the id of.
- * @returns The worker id of the given worker.
- * @internal
- */
-export const getWorkerId = (worker: IWorker): number | undefined => {
- if (worker instanceof ThreadWorker) {
- return worker.threadId
- } else if (worker instanceof ClusterWorker) {
- return worker.id
- }
-}
-
/**
* Sleeps for the given amount of milliseconds.
- *
* @param ms - The amount of milliseconds to sleep.
* @returns A promise that resolves after the given amount of milliseconds.
* @internal
/**
* Computes the retry delay in milliseconds using an exponential back off algorithm.
- *
* @param retryNumber - The number of retries that have already been attempted
* @param delayFactor - The base delay factor in milliseconds
* @returns Delay in milliseconds
/**
* Computes the average of the given data set.
- *
* @param dataSet - Data set.
* @returns The average of the given data set.
* @internal
export const average = (dataSet: number[]): number => {
if (Array.isArray(dataSet) && dataSet.length === 0) {
return 0
- }
- if (Array.isArray(dataSet) && dataSet.length === 1) {
+ } else if (Array.isArray(dataSet) && dataSet.length === 1) {
return dataSet[0]
}
return (
/**
* Computes the median of the given data set.
- *
* @param dataSet - Data set.
* @returns The median of the given data set.
* @internal
export const median = (dataSet: number[]): number => {
if (Array.isArray(dataSet) && dataSet.length === 0) {
return 0
- }
- if (Array.isArray(dataSet) && dataSet.length === 1) {
+ } else if (Array.isArray(dataSet) && dataSet.length === 1) {
return dataSet[0]
}
const sortedDataSet = dataSet.slice().sort((a, b) => a - b)
/**
* Rounds the given number to the given scale.
* The rounding is done using the "round half away from zero" method.
- *
* @param num - The number to round.
* @param scale - The scale to round to.
* @returns The rounded number.
}
/**
- * Is the given object a plain object?
- *
- * @param obj - The object to check.
- * @returns `true` if the given object is a plain object, `false` otherwise.
+ * Is the given value a plain object?
+ * @param value - The value to check.
+ * @returns `true` if the given value is a plain object, `false` otherwise.
* @internal
*/
-export const isPlainObject = (obj: unknown): boolean =>
- typeof obj === 'object' &&
- obj !== null &&
- obj?.constructor === Object &&
- Object.prototype.toString.call(obj) === '[object Object]'
+export const isPlainObject = (value: unknown): value is object =>
+ typeof value === 'object' &&
+ value !== null &&
+ value.constructor === Object &&
+ Object.prototype.toString.call(value) === '[object Object]'
/**
* Detects whether the given value is a kill behavior or not.
- *
* @typeParam KB - Which specific KillBehavior type to test against.
* @param killBehavior - Which kind of kill behavior to detect.
- * @param value - Any value.
+ * @param value - Unknown value.
* @returns `true` if `value` was strictly equals to `killBehavior`, otherwise `false`.
* @internal
*/
/**
* Detects whether the given value is an asynchronous function or not.
- *
- * @param fn - Any value.
+ * @param fn - Unknown value.
* @returns `true` if `fn` was an asynchronous function, otherwise `false`.
* @internal
*/
/**
* Generates a cryptographically secure random number in the [0,1[ range
- *
* @returns A number in the [0,1[ range
* @internal
*/
/**
* Returns the minimum of the given numbers.
- * If no numbers are given, `Infinity` is returned.
- *
+ * If no numbers are given, `Number.POSITIVE_INFINITY` is returned.
* @param args - The numbers to get the minimum of.
* @returns The minimum of the given numbers.
* @internal
*/
export const min = (...args: number[]): number =>
- args.reduce((minimum, num) => (minimum < num ? minimum : num), Infinity)
+ args.reduce(
+ (minimum, num) => (minimum < num ? minimum : num),
+ Number.POSITIVE_INFINITY
+ )
/**
* Returns the maximum of the given numbers.
- * If no numbers are given, `-Infinity` is returned.
- *
+ * If no numbers are given, `Number.NEGATIVE_INFINITY` is returned.
* @param args - The numbers to get the maximum of.
* @returns The maximum of the given numbers.
* @internal
*/
export const max = (...args: number[]): number =>
- args.reduce((maximum, num) => (maximum > num ? maximum : num), -Infinity)
+ args.reduce(
+ (maximum, num) => (maximum > num ? maximum : num),
+ Number.NEGATIVE_INFINITY
+ )
/**
* Wraps a function so that it can only be called once.
- *
* @param fn - The function to wrap.
* @param context - The context to bind the function to.
* @returns The wrapped function.
+ * @typeParam A - The function's arguments.
+ * @typeParam R - The function's return value.
+ * @typeParam C - The function's context.
* @internal
*/
// eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const once = <T, A extends any[], R>(
+export const once = <A extends any[], R, C extends ThisType<any>>(
fn: (...args: A) => R,
- context: T
+ context: C
): ((...args: A) => R) => {
let result: R
return (...args: A) => {
+ // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (fn != null) {
- result = fn.apply<T, A, R>(context, args)
+ result = fn.apply<C, A, R>(context, args)
;(fn as unknown as undefined) = (context as unknown as undefined) =
undefined
}
}
}
-export const getWorkerChoiceStrategyRetries = <
- Worker extends IWorker,
- Data,
- Response
->(
- pool: IPool<Worker, Data, Response>,
- opts?: WorkerChoiceStrategyOptions
- ): number => {
- return (
- pool.info.maxSize +
- Object.keys(opts?.weights ?? getDefaultWeights(pool.info.maxSize)).length
- )
-}
-
-const clone = <T>(object: T): T => {
- return structuredClone<T>(object)
-}
-
-export const buildWorkerChoiceStrategyOptions = <
- Worker extends IWorker,
- Data,
- Response
->(
- pool: IPool<Worker, Data, Response>,
- opts?: WorkerChoiceStrategyOptions
- ): WorkerChoiceStrategyOptions => {
- opts = clone(opts ?? {})
- opts.weights = opts?.weights ?? getDefaultWeights(pool.info.maxSize)
+export const buildTaskFunctionProperties = <Data, Response>(
+ name: string,
+ taskFunctionObject: TaskFunctionObject<Data, Response> | undefined
+): TaskFunctionProperties => {
return {
- ...{
- runTime: { median: false },
- waitTime: { median: false },
- elu: { median: false }
- },
- ...opts
- }
-}
-
-const getDefaultWeights = (
- poolMaxSize: number,
- defaultWorkerWeight?: number
-): Record<number, number> => {
- defaultWorkerWeight = defaultWorkerWeight ?? getDefaultWorkerWeight()
- const weights: Record<number, number> = {}
- for (let workerNodeKey = 0; workerNodeKey < poolMaxSize; workerNodeKey++) {
- weights[workerNodeKey] = defaultWorkerWeight
- }
- return weights
-}
-
-const getDefaultWorkerWeight = (): number => {
- const cpuSpeed = randomInt(500, 2500)
- let cpusCycleTimeWeight = 0
- for (const cpu of cpus()) {
- if (cpu.speed == null || cpu.speed === 0) {
- cpu.speed =
- cpus().find(cpu => cpu.speed != null && cpu.speed !== 0)?.speed ??
- cpuSpeed
- }
- // CPU estimated cycle time
- const numberOfDigits = cpu.speed.toString().length - 1
- const cpuCycleTime = 1 / (cpu.speed / Math.pow(10, numberOfDigits))
- cpusCycleTimeWeight += cpuCycleTime * Math.pow(10, numberOfDigits)
+ name,
+ ...(taskFunctionObject?.priority != null && {
+ priority: taskFunctionObject.priority,
+ }),
+ ...(taskFunctionObject?.strategy != null && {
+ strategy: taskFunctionObject.strategy,
+ }),
}
- return Math.round(cpusCycleTimeWeight / cpus().length)
}
repositories / poolifier.git / blobdiff