X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fthread%2Fdynamic.ts;h=8e795512694aa41a2ea82b9c727e3ebd348b01c9;hb=bcf1c155ec2e2d9208c8f818abd031662bd61d7f;hp=86950b43a6de1d79431a587b0d42f78e91bcb99a;hpb=1a81f8af06213d08267e8e7d593c5ec7be087535;p=poolifier.git

diff --git a/src/pools/thread/dynamic.ts b/src/pools/thread/dynamic.ts
index 86950b43..8e795512 100644
--- a/src/pools/thread/dynamic.ts
+++ b/src/pools/thread/dynamic.ts
@@ -1,77 +1,62 @@
-import type { JSONValue } from '../../utility-types'
-import { isKillBehavior, KillBehaviors } from '../../worker/worker-options'
-import type { PoolOptions } from '../abstract-pool'
-import type { ThreadWorkerWithMessageChannel } from './fixed'
-import { FixedThreadPool } from './fixed'
+import { PoolEvents, type PoolType, PoolTypes } from '../pool.js'
+import { checkDynamicPoolSize } from '../utils.js'
+import { FixedThreadPool, type ThreadPoolOptions } from './fixed.js'
 
 /**
  * A thread pool with a dynamic number of threads, but a guaranteed minimum number of threads.
  *
  * This thread pool creates new threads when the others are busy, up to the maximum number of threads.
- * When the maximum number of threads is reached, an event is emitted. If you want to listen to this event, use the pool's `emitter`.
- *
- * @template Data Type of data sent to the worker.
- * @template Response Type of response of execution.
+ * When the maximum number of threads is reached and workers are busy, an event is emitted. If you want to listen to this event, use the pool's `emitter`.
  *
+ * @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)
  * @since 0.0.1
  */
 export class DynamicThreadPool<
-  Data extends JSONValue = JSONValue,
-  Response extends JSONValue = JSONValue
+  Data = unknown,
+  Response = unknown
 > extends FixedThreadPool<Data, Response> {
   /**
    * Constructs a new poolifier dynamic thread pool.
    *
-   * @param min Minimum number of threads which are always active.
-   * @param max Maximum number of threads that can be created by this pool.
-   * @param filename 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 }`
+   * @param min - Minimum number of threads which are always active.
+   * @param max - Maximum number of threads that can be created by this pool.
+   * @param filePath - Path to an implementation of a `ThreadWorker` file, which can be relative or absolute.
+   * @param opts - Options for this dynamic thread pool.
    */
   public constructor (
     min: number,
-    public readonly max: number,
-    filename: string,
-    opts: PoolOptions<ThreadWorkerWithMessageChannel> = { maxTasks: 1000 }
+    max: number,
+    filePath: string,
+    opts: ThreadPoolOptions = {}
   ) {
-    super(min, filename, opts)
+    super(min, filePath, opts, max)
+    checkDynamicPoolSize(
+      this.minimumNumberOfWorkers,
+      this.maximumNumberOfWorkers
+    )
   }
 
-  /**
-   * Choose a thread for the next task.
-   *
-   * It will first check for and return an idle thread.
-   * If all threads are busy, then it will try to create a new one up to the `max` thread count.
-   * If the max thread count is reached, the emitter will emit a `FullPool` event and it will fall back to using a round robin algorithm to distribute the load.
-   *
-   * @returns Thread worker.
-   */
-  protected chooseWorker (): ThreadWorkerWithMessageChannel {
-    for (const [worker, numberOfTasks] of this.tasks) {
-      if (numberOfTasks === 0) {
-        // A worker is free, use it
-        return worker
-      }
-    }
+  /** @inheritDoc */
+  protected shallCreateDynamicWorker (): boolean {
+    return (!this.full && this.internalBusy()) || this.empty
+  }
 
-    if (this.workers.length === this.max) {
-      this.emitter.emit('FullPool')
-      return super.chooseWorker()
+  /** @inheritDoc */
+  protected checkAndEmitDynamicWorkerCreationEvents (): void {
+    if (this.full) {
+      this.emitter?.emit(PoolEvents.full, this.info)
     }
+  }
+
+  /** @inheritDoc */
+  protected get type (): PoolType {
+    return PoolTypes.dynamic
+  }
 
-    // All workers are busy, create a new worker
-    const workerCreated = this.createAndSetupWorker()
-    this.registerWorkerMessageListener<Data>(workerCreated, message => {
-      const tasksInProgress = this.tasks.get(workerCreated)
-      if (
-        isKillBehavior(KillBehaviors.HARD, message.kill) ||
-        tasksInProgress === 0
-      ) {
-        // Kill received from the worker, means that no new tasks are submitted to that worker for a while ( > maxInactiveTime)
-        this.sendToWorker(workerCreated, { kill: 1 })
-        void this.destroyWorker(workerCreated)
-      }
-    })
-    return workerCreated
+  /** @inheritDoc */
+  protected get busy (): boolean {
+    return this.full && this.internalBusy()
   }
 }