1 import { type PoolOptions
, type PoolType
, PoolTypes
} from
'../pool'
2 import { FixedThreadPool
, type ThreadWorkerWithMessageChannel
} from
'./fixed'
5 * A thread pool with a dynamic number of threads, but a guaranteed minimum number of threads.
7 * This thread pool creates new threads when the others are busy, up to the maximum number of threads.
8 * 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`.
10 * @typeParam Data - Type of data sent to the worker. This can only be serializable data.
11 * @typeParam Response - Type of execution response. This can only be serializable data.
12 * @author [Alessandro Pio Ardizio](https://github.com/pioardi)
15 export class DynamicThreadPool
<
18 > extends FixedThreadPool
<Data
, Response
> {
20 * Constructs a new poolifier dynamic thread pool.
22 * @param min - Minimum number of threads which are always active.
23 * @param max - Maximum number of threads that can be created by this pool.
24 * @param filePath - Path to an implementation of a `ThreadWorker` file, which can be relative or absolute.
25 * @param opts - Options for this dynamic thread pool.
29 protected readonly max
: number,
31 opts
: PoolOptions
<ThreadWorkerWithMessageChannel
> = {}
33 super(min
, filePath
, opts
)
37 protected get
type (): PoolType
{
38 return PoolTypes
.dynamic
42 protected get
maxSize (): number {
47 protected get
busy (): boolean {
48 return this.full
&& this.internalBusy()