1 import type { PoolOptions
} from
'../abstract-pool'
2 import { PoolType
} from
'../pool-internal'
3 import type { ThreadWorkerWithMessageChannel
} from
'./fixed'
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, an event is emitted. If you want to listen to this event, use the pool's `emitter`.
12 * @template Data Type of data sent to the worker. This can only be serializable data.
13 * @template Response Type of response of execution. This can only be serializable data.
15 * @author [Alessandro Pio Ardizio](https://github.com/pioardi)
18 export class DynamicThreadPool
<
21 > extends FixedThreadPool
<Data
, Response
> {
23 * Constructs a new poolifier dynamic thread pool.
25 * @param min Minimum number of threads which are always active.
26 * @param max Maximum number of threads that can be created by this pool.
27 * @param filePath Path to an implementation of a `ThreadWorker` file, which can be relative or absolute.
28 * @param opts Options for this dynamic thread pool. Default: `{}`
32 public readonly max
: number,
34 opts
: PoolOptions
<ThreadWorkerWithMessageChannel
> = {}
36 super(min
, filePath
, opts
)
40 public get
type (): PoolType
{
41 return PoolType
.DYNAMIC
45 public get
busy (): boolean {
46 return this.workers
.length
=== this.max