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doc/api
- perf_hooks.md
lib/internal/perf
- event_loop_delay.js

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`‎doc/api/perf_hooks.md‎`

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+17Lines changed: 17 additions & 0 deletions

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Original file line number	Diff line number	Diff line change
`@@ -1973,6 +1973,23 @@ added: v11.10.0`
`1973`	`1973`	Enables the update interval timer. Returns `true` if the timer was
`1974`	`1974`	started, `false` if it was already started.
`1975`	`1975`
	`1976`	+### `histogram[Symbol.dispose]()`
	`1977`	`+`
	`1978`	`+<!-- YAML`
	`1979`	`+added: REPLACEME`
	`1980`	`+-->`
	`1981`	`+`
	`1982`	`+Disables the update interval timer when the histogram is disposed.`
	`1983`	`+`
	`1984`	+```js
	`1985`	`+const { monitorEventLoopDelay } = require('node:perf_hooks');`
	`1986`	`+{`
	`1987`	`+ using hist = monitorEventLoopDelay({ resolution: 20 });`
	`1988`	`+ hist.enable();`
	`1989`	`+ // The histogram will be disabled when the block is exited.`
	`1990`	`+}`
	`1991`	+```
	`1992`	`+`
`1976`	`1993`	### Cloning an `IntervalHistogram`
`1977`	`1994`
`1978`	`1995`	`{IntervalHistogram} instances can be cloned via {MessagePort}. On the receiving`

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`‎lib/internal/perf/event_loop_delay.js‎`

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+6-1Lines changed: 6 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -3,6 +3,7 @@ const {`
`3`	`3`	`ReflectConstruct,`
`4`	`4`	`SafeMap,`
`5`	`5`	`Symbol,`
	`6`	`+ SymbolDispose,`
`6`	`7`	`} = primordials;`
`7`	`8`
`8`	`9`	`const {`
`@@ -38,7 +39,7 @@ const {`
`38`	`39`	`const kEnabled = Symbol('kEnabled');`
`39`	`40`
`40`	`41`	`class ELDHistogram extends Histogram {`
`41`		`- constructor(i) {`
	`42`	`+ constructor() {`
`42`	`43`	`throw new ERR_ILLEGAL_CONSTRUCTOR();`
`43`	`44`	`}`
`44`	`45`
`@@ -65,6 +66,10 @@ class ELDHistogram extends Histogram {`
`65`	`66`	`this[kHandle].stop();`
`66`	`67`	`return true;`
`67`	`68`	`}`
	`69`	`+`
	`70`	`+ [SymbolDispose]() {`
	`71`	`+ this.disable();`
	`72`	`+ }`
`68`	`73`	`}`
`69`	`74`
`70`	`75`	`/**`

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