X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Futils.ts;h=a6f5fbcc5b729b98f5dec1da1de8178eff830d40;hb=f42c583f7cef671a4a70b2d749875ea3a155fd84;hp=da1459f96be3877b3faf22913f548b920b4979e3;hpb=f167044fd69fd0028160f3a92ad435c37be7de7b;p=poolifier.git

diff --git a/src/utils.ts b/src/utils.ts
index da1459f9..a6f5fbcc 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,4 +1,8 @@
-import type { WorkerChoiceStrategyOptions } from './pools/selection-strategies/selection-strategies-types'
+import os from 'node:os'
+import type {
+  MeasurementStatisticsRequirements,
+  WorkerChoiceStrategyOptions
+} from './pools/selection-strategies/selection-strategies-types'
 
 /**
  * An intentional empty function.
@@ -12,9 +16,37 @@ export const EMPTY_FUNCTION: () => void = Object.freeze(() => {
  */
 export const DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS: WorkerChoiceStrategyOptions =
   {
-    medRunTime: false
+    runTime: { median: false },
+    waitTime: { median: false },
+    elu: { median: false }
   }
 
+/**
+ * Default measurement statistics requirements.
+ */
+export const DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS: MeasurementStatisticsRequirements =
+  {
+    aggregate: false,
+    average: false,
+    median: false
+  }
+
+/**
+ * Safe helper to get the host OS optimized maximum pool size.
+ */
+export const availableParallelism = (): number => {
+  let availableParallelism = 1
+  try {
+    availableParallelism = os.availableParallelism()
+  } catch {
+    const cpus = os.cpus()
+    if (Array.isArray(cpus) && cpus.length > 0) {
+      availableParallelism = cpus.length
+    }
+  }
+  return availableParallelism
+}
+
 /**
  * Compute the median of the given data set.
  *
@@ -29,9 +61,6 @@ export const median = (dataSet: number[]): number => {
     return dataSet[0]
   }
   const sortedDataSet = dataSet.slice().sort((a, b) => a - b)
-  if (sortedDataSet.length % 2 === 0) {
-    return sortedDataSet[sortedDataSet.length / 2]
-  }
   return (
     (sortedDataSet[(sortedDataSet.length - 1) >> 1] +
       sortedDataSet[sortedDataSet.length >> 1]) /
@@ -39,6 +68,12 @@ export const median = (dataSet: number[]): 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.
+ */
 export const isPlainObject = (obj: unknown): boolean =>
   typeof obj === 'object' &&
   obj !== null &&