chore: v2.6.32

[poolifier.git] / src / utils.ts

diff --git a/src/utils.ts b/src/utils.ts
index 0becc5ed9aed9147cfaa5351d60a5e757ba0554b..6f9d1226bb71210b020d987b32d169bbd593b5b8 100644 (file)
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -4,6 +4,7 @@ import type {
   WorkerChoiceStrategyOptions
 } from './pools/selection-strategies/selection-strategies-types'
 import type { KillBehavior } from './worker/worker-options'
+import type { MeasurementStatistics } from './pools/worker'
 
 /**
  * Default task name.
@@ -22,6 +23,7 @@ export const EMPTY_FUNCTION: () => void = Object.freeze(() => {
  */
 export const DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS: WorkerChoiceStrategyOptions =
   {
+    choiceRetries: 6,
     runTime: { median: false },
     waitTime: { median: false },
     elu: { median: false }
@@ -56,6 +58,22 @@ export const availableParallelism = (): number => {
   return availableParallelism
 }
 
+// /**
+//  * Computes the retry delay in milliseconds using an exponential back off algorithm.
+//  *
+//  * @param retryNumber - The number of retries that have already been attempted
+//  * @param maxDelayRatio - The maximum ratio of the delay that can be randomized
+//  * @returns Delay in milliseconds
+//  */
+// export const exponentialDelay = (
+//   retryNumber = 0,
+//   maxDelayRatio = 0.2
+// ): number => {
+//   const delay = Math.pow(2, retryNumber) * 100
+//   const randomSum = delay * maxDelayRatio * Math.random() // 0-(maxDelayRatio*100)% of the delay
+//   return delay + randomSum
+// }
+
 /**
  * Computes the median of the given data set.
  *
@@ -128,3 +146,63 @@ export const isAsyncFunction = (
 ): fn is (...args: unknown[]) => Promise<unknown> => {
   return typeof fn === 'function' && fn.constructor.name === 'AsyncFunction'
 }
+
+/**
+ * Updates the given measurement statistics.
+ *
+ * @param measurementStatistics - The measurement statistics to update.
+ * @param measurementRequirements - The measurement statistics requirements.
+ * @param measurementValue - The measurement value.
+ * @param numberOfMeasurements - The number of measurements.
+ */
+export const updateMeasurementStatistics = (
+  measurementStatistics: MeasurementStatistics,
+  measurementRequirements: MeasurementStatisticsRequirements,
+  measurementValue: number,
+  numberOfMeasurements: number
+): void => {
+  if (measurementRequirements.aggregate) {
+    measurementStatistics.aggregate =
+      (measurementStatistics.aggregate ?? 0) + measurementValue
+    measurementStatistics.minimum = Math.min(
+      measurementValue,
+      measurementStatistics.minimum ?? Infinity
+    )
+    measurementStatistics.maximum = Math.max(
+      measurementValue,
+      measurementStatistics.maximum ?? -Infinity
+    )
+    if (measurementRequirements.average && numberOfMeasurements !== 0) {
+      measurementStatistics.average =
+        measurementStatistics.aggregate / numberOfMeasurements
+    }
+    if (measurementRequirements.median && measurementValue != null) {
+      measurementStatistics.history.push(measurementValue)
+      measurementStatistics.median = median(measurementStatistics.history)
+    }
+  }
+}
+
+/**
+ * Executes a function once at a time.
+ *
+ * @param fn - The function to execute.
+ * @param context - The context to bind the function to.
+ * @returns The function to execute.
+ */
+export const once = (
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  fn: (...args: any[]) => void,
+  context: unknown
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+): ((...args: any[]) => void) => {
+  let called = false
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  return function (...args: any[]): void {
+    if (!called) {
+      called = true
+      fn.apply(context, args)
+      called = false
+    }
+  }
+}