b0a22346690bd36c471b6b45c844af8ffae098ea
1 import { type Worker
} from
'node:worker_threads'
2 import { type PoolOptions
, type PoolType
, PoolTypes
} from
'../pool'
3 import { checkDynamicPoolSize
} from
'../utils'
4 import { FixedThreadPool
} from
'./fixed'
7 * A thread pool with a dynamic number of threads, but a guaranteed minimum number of threads.
9 * This thread pool creates new threads when the others are busy, up to the maximum number of threads.
10 * 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`.
12 * @typeParam Data - Type of data sent to the worker. This can only be structured-cloneable data.
13 * @typeParam Response - Type of execution response. This can only be structured-cloneable data.
14 * @author [Alessandro Pio Ardizio](https://github.com/pioardi)
17 export class DynamicThreadPool
<
20 > extends FixedThreadPool
<Data
, Response
> {
22 * Constructs a new poolifier dynamic thread pool.
24 * @param min - Minimum number of threads which are always active.
25 * @param max - Maximum number of threads that can be created by this pool.
26 * @param filePath - Path to an implementation of a `ThreadWorker` file, which can be relative or absolute.
27 * @param opts - Options for this dynamic thread pool.
33 opts
: PoolOptions
<Worker
> = {}
35 super(min
, filePath
, opts
, max
)
37 this.minimumNumberOfWorkers
,
38 this.maximumNumberOfWorkers
as number
43 protected get
type (): PoolType
{
44 return PoolTypes
.dynamic
48 protected get
busy (): boolean {
49 return this.full
&& this.internalBusy()