fix: unref() message port at worker exit

[poolifier.git] / src / worker / thread-worker.ts

diff --git a/src/worker/thread-worker.ts b/src/worker/thread-worker.ts
index b6573a974cc653656fb6a968b0437e57eeed7dd6..4d4c1c3479f14970db523ff96d873f0b4cdac79f 100644 (file)
--- a/src/worker/thread-worker.ts
+++ b/src/worker/thread-worker.ts
@@ -1,4 +1,9 @@
-import { type MessagePort, isMainThread, parentPort } from 'node:worker_threads'
+import {
+  type MessagePort,
+  isMainThread,
+  parentPort,
+  threadId
+} from 'node:worker_threads'
 import type { MessageValue } from '../utility-types'
 import { AbstractWorker } from './abstract-worker'
 import type { WorkerOptions } from './worker-options'
@@ -22,6 +27,10 @@ export class ThreadWorker<
   Data = unknown,
   Response = unknown
 > extends AbstractWorker<MessagePort, Data, Response> {
+  /**
+   * Message port used to communicate with the main thread.
+   */
+  private port!: MessagePort
   /**
    * Constructs a new poolifier thread worker.
    *
@@ -37,14 +46,45 @@ export class ThreadWorker<
     super(
       'worker-thread-pool:poolifier',
       isMainThread,
-      taskFunctions,
       parentPort as MessagePort,
+      taskFunctions,
       opts
     )
   }
 
+  /** @inheritDoc */
+  protected handleReadyMessage (message: MessageValue<Data>): void {
+    if (
+      !this.isMain &&
+      message.workerId === this.id &&
+      message.ready != null &&
+      message.port != null
+    ) {
+      this.port = message.port
+      this.port.on('message', this.messageListener.bind(this))
+      this.sendToMainWorker({ ready: true, workerId: this.id })
+    }
+  }
+
+  /** @inheritDoc */
+  protected handleKillMessage (message: MessageValue<Data, unknown>): void {
+    super.handleKillMessage(message)
+    this.port?.unref()
+    this.port?.close()
+  }
+
+  /** @inheritDoc */
+  protected get id (): number {
+    return threadId
+  }
+
   /** @inheritDoc */
   protected sendToMainWorker (message: MessageValue<Response>): void {
-    this.getMainWorker().postMessage(message)
+    this.port.postMessage(message)
+  }
+
+  /** @inheritDoc */
+  protected handleError (e: Error | string): string {
+    return e as string
   }
 }