refactor: move message channel property from worker info to node

[poolifier.git] / src / pools / thread / fixed.ts

diff --git a/src/pools/thread/fixed.ts b/src/pools/thread/fixed.ts
index 881e37f636eb3a5ba4770c0c7b90cbb994ab029e..8dd4e7e33e422b4467a76931b201c45c0ad80712 100644 (file)
--- a/src/pools/thread/fixed.ts
+++ b/src/pools/thread/fixed.ts
@@ -1,18 +1,16 @@
 import {
+  type MessageChannel,
+  type MessagePort,
   SHARE_ENV,
+  type TransferListItem,
   Worker,
   type WorkerOptions,
   isMainThread
 } from 'node:worker_threads'
 import type { MessageValue } from '../../utility-types'
 import { AbstractPool } from '../abstract-pool'
-import {
-  type PoolOptions,
-  type PoolType,
-  PoolTypes,
-  type WorkerType,
-  WorkerTypes
-} from '../pool'
+import { type PoolOptions, type PoolType, PoolTypes } from '../pool'
+import { type WorkerType, WorkerTypes } from '../worker'
 
 /**
  * Options for a poolifier thread pool.
@@ -29,8 +27,6 @@ export interface ThreadPoolOptions extends PoolOptions<Worker> {
 /**
  * A thread pool with a fixed number of threads.
  *
- * It is possible to perform tasks in sync or asynchronous mode as you prefer.
- *
  * @typeParam Data - Type of data sent to the worker. This can only be structured-cloneable data.
  * @typeParam Response - Type of execution response. This can only be structured-cloneable data.
  * @author [Alessandro Pio Ardizio](https://github.com/pioardi)
@@ -61,14 +57,57 @@ export class FixedThreadPool<
   }
 
   /** @inheritDoc */
-  protected async destroyWorker (worker: Worker): Promise<void> {
-    this.sendToWorker(worker, { kill: 1 })
+  protected async destroyWorkerNode (workerNodeKey: number): Promise<void> {
+    this.flushTasksQueue(workerNodeKey)
+    // FIXME: wait for tasks to be finished
+    const workerNode = this.workerNodes[workerNodeKey]
+    const worker = workerNode.worker
+    const waitWorkerExit = new Promise<void>((resolve) => {
+      worker.on('exit', () => {
+        resolve()
+      })
+    })
+    await this.sendKillMessageToWorker(workerNodeKey, worker.threadId)
+    workerNode.closeChannel()
     await worker.terminate()
+    await waitWorkerExit
+  }
+
+  /** @inheritDoc */
+  protected sendToWorker (
+    workerNodeKey: number,
+    message: MessageValue<Data>,
+    transferList?: TransferListItem[]
+  ): void {
+    (
+      this.workerNodes[workerNodeKey].messageChannel as MessageChannel
+    ).port1.postMessage(message, transferList)
+  }
+
+  /** @inheritDoc */
+  protected sendStartupMessageToWorker (workerNodeKey: number): void {
+    const worker = this.workerNodes[workerNodeKey].worker
+    const port2: MessagePort = (
+      this.workerNodes[workerNodeKey].messageChannel as MessageChannel
+    ).port2
+    worker.postMessage(
+      {
+        ready: false,
+        workerId: worker.threadId,
+        port: port2
+      },
+      [port2]
+    )
   }
 
   /** @inheritDoc */
-  protected sendToWorker (worker: Worker, message: MessageValue<Data>): void {
-    worker.postMessage(message)
+  protected registerWorkerMessageListener<Message extends Data | Response>(
+    workerNodeKey: number,
+    listener: (message: MessageValue<Message>) => void
+  ): void {
+    (
+      this.workerNodes[workerNodeKey].messageChannel as MessageChannel
+    ).port1.on('message', listener)
   }
 
   /** @inheritDoc */