JSONValue can not be used by custom defined interfaces (#201)

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

diff --git a/src/pools/thread/fixed.ts b/src/pools/thread/fixed.ts
index 6cf8b526baf51d479a73c82a1bff9444718d9ffa..a61c10b2346c8a44c4094605dfe6aa25787b8f09 100644 (file)
--- a/src/pools/thread/fixed.ts
+++ b/src/pools/thread/fixed.ts
@@ -1,33 +1,43 @@
 import { isMainThread, MessageChannel, SHARE_ENV, Worker } from 'worker_threads'
-import type { Draft, JSONValue, MessageValue } from '../../utility-types'
+import type { Draft, MessageValue } from '../../utility-types'
 import type { PoolOptions } from '../abstract-pool'
 import { AbstractPool } from '../abstract-pool'
 
+/**
+ * A thread worker with message channels for communication between main thread and thread worker.
+ */
 export type ThreadWorkerWithMessageChannel = Worker & Draft<MessageChannel>
 
 /**
- * A thread pool with a static number of threads, is possible to execute tasks in sync or async mode as you prefer.
+ * A thread pool with a fixed number of threads.
+ *
+ * It is possible to perform tasks in sync or asynchronous mode as you prefer.
  *
- * This pool will select the worker thread in a round robin fashion.
+ * This pool selects the threads in a round robin fashion.
+ *
+ * @template Data Type of data sent to the worker. This can only be serializable data.
+ * @template Response Type of response of execution. This can only be serializable data.
  *
  * @author [Alessandro Pio Ardizio](https://github.com/pioardi)
  * @since 0.0.1
  */
 export class FixedThreadPool<
-  Data extends JSONValue = JSONValue,
-  Response extends JSONValue = JSONValue
+  Data = unknown,
+  Response = unknown
 > extends AbstractPool<ThreadWorkerWithMessageChannel, Data, Response> {
   /**
-   * @param numThreads Num of threads for this worker pool.
-   * @param filePath A file path with implementation of `ThreadWorker` class, relative path is fine.
-   * @param opts An object with possible options for example `errorHandler`, `onlineHandler`. Default: `{ maxTasks: 1000 }`
+   * Constructs a new poolifier fixed thread pool.
+   *
+   * @param numberOfThreads Number of threads for this pool.
+   * @param filePath Path to an implementation of a `ThreadWorker` file, which can be relative or absolute.
+   * @param opts Options for this fixed thread pool. Default: `{ maxTasks: 1000 }`
    */
   public constructor (
-    numThreads: number,
+    numberOfThreads: number,
     filePath: string,
     opts: PoolOptions<ThreadWorkerWithMessageChannel> = { maxTasks: 1000 }
   ) {
-    super(numThreads, filePath, opts)
+    super(numberOfThreads, filePath, opts)
   }
 
   protected isMain (): boolean {
@@ -37,8 +47,8 @@ export class FixedThreadPool<
   protected async destroyWorker (
     worker: ThreadWorkerWithMessageChannel
   ): Promise<void> {
+    this.sendToWorker(worker, { kill: 1 })
     await worker.terminate()
-    // FIXME: The tests are currently failing, so these must be changed first
   }
 
   protected sendToWorker (
@@ -48,29 +58,27 @@ export class FixedThreadPool<
     worker.postMessage(message)
   }
 
-  protected registerWorkerMessageListener (
-    port: ThreadWorkerWithMessageChannel,
-    listener: (message: MessageValue<Response>) => void
+  protected registerWorkerMessageListener<Message extends Data | Response> (
+    messageChannel: ThreadWorkerWithMessageChannel,
+    listener: (message: MessageValue<Message>) => void
   ): void {
-    port.port2?.on('message', listener)
+    messageChannel.port2?.on('message', listener)
   }
 
-  protected unregisterWorkerMessageListener (
-    port: ThreadWorkerWithMessageChannel,
-    listener: (message: MessageValue<Response>) => void
+  protected unregisterWorkerMessageListener<Message extends Data | Response> (
+    messageChannel: ThreadWorkerWithMessageChannel,
+    listener: (message: MessageValue<Message>) => void
   ): void {
-    port.port2?.removeListener('message', listener)
+    messageChannel.port2?.removeListener('message', listener)
   }
 
-  protected newWorker (): ThreadWorkerWithMessageChannel {
+  protected createWorker (): ThreadWorkerWithMessageChannel {
     return new Worker(this.filePath, {
       env: SHARE_ENV
     })
   }
 
-  protected afterNewWorkerPushed (
-    worker: ThreadWorkerWithMessageChannel
-  ): void {
+  protected afterWorkerSetup (worker: ThreadWorkerWithMessageChannel): void {
     const { port1, port2 } = new MessageChannel()
     worker.postMessage({ parent: port1 }, [port1])
     worker.port1 = port1