refactor(SafeSubscriber): optimize perf for ordinary observers #6815
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No longer require function binding if we aren't using the deprecated next context. This should improve performance in the common path of consumers subscribing with an object or even with a function. Adds a simple class `ConsumerObserver` which is mostly meant to optimize the number of function refrences created. We should never expose this externally. Related ReactiveX#6783
benlesh
commented
Feb 8, 2022
| let context: any; | ||
| if (this && config.useDeprecatedNextContext) { | ||
| // This is a deprecated path that made `this.unsubscribe()` available in | ||
| // next handler functions passed to subscribe. This only exists behind a flag | ||
| // now, as it is *very* slow. | ||
| context = Object.create(observerOrNext); | ||
| context.unsubscribe = () => this.unsubscribe(); | ||
| partialObserver = { | ||
| next: observerOrNext.next && bind(observerOrNext.next, context), |
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Note that we only bind in this case now.
benlesh
commented
Feb 8, 2022
| } else { | ||
| context = observerOrNext; | ||
| partialObserver = observerOrNext; |
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any other partial observer passed is used as-is.
|
I don't have any performance metrics on this, unfortunately, nor do I have time to create them. But I have no doubt that using the passed partial observer directly will be an order of magnitude faster than pulling its functions off and binding them before using them. |
benlesh
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cartant
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Feb 9, 2022
|
|
||
| next(value: T): void { | ||
| if (this.partialObserver.next) { | ||
| try { |
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You could access the partialObserver via this only once here: const { partialObserver } = this or whatever. There's no need to access it twice. Same for the other methods.
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [rxjs](https://rxjs.dev) ([source](https://github.com/reactivex/rxjs)) | dependencies | patch | [`7.5.2` -> `7.5.4`](https://renovatebot.com/diffs/npm/rxjs/7.5.2/7.5.4) | --- ### Release Notes <details> <summary>reactivex/rxjs</summary> ### [`v7.5.4`](https://github.com/reactivex/rxjs/blob/HEAD/CHANGELOG.md#​754-httpsgithubcomreactivexrxjscompare753754-2022-02-09) [Compare Source](ReactiveX/rxjs@7.5.3...7.5.4) ##### Performance Improvements - removed code that would `bind` functions passed with observers to `subscribe`. ([#​6815](ReactiveX/rxjs#6815)) ([fb375a0](ReactiveX/rxjs@fb375a0)), closes [#​6783](ReactiveX/rxjs#6783) ### [`v7.5.3`](https://github.com/reactivex/rxjs/blob/HEAD/CHANGELOG.md#​753-httpsgithubcomreactivexrxjscompare752753-2022-02-08) [Compare Source](ReactiveX/rxjs@7.5.2...7.5.3) ##### Bug Fixes - **subscribe:** allow interop with Monio and other libraries that patch function bind ([0ab91eb](ReactiveX/rxjs@0ab91eb)), closes [#​6783](ReactiveX/rxjs#6783) </details> --- ### Configuration 📅 **Schedule**: At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox. --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). Co-authored-by: cabr2-bot <cabr2.help@gmail.com> Co-authored-by: crapStone <crapstone@noreply.codeberg.org> Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1159 Reviewed-by: crapStone <crapstone@noreply.codeberg.org> Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org> Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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Dec 23, 2022
This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [rxjs](https://rxjs.dev) ([source](https://github.com/reactivex/rxjs)) | dependencies | minor | [`7.5.7` -> `7.8.0`](https://renovatebot.com/diffs/npm/rxjs/7.5.7/7.8.0) | --- ### Release Notes <details> <summary>reactivex/rxjs</summary> ### [`v7.8.0`](https://github.com/reactivex/rxjs/blob/HEAD/CHANGELOG.md#​780-httpsgithubcomreactivexrxjscompare770780-2022-12-15) [Compare Source](ReactiveX/rxjs@7.7.0...7.8.0) ##### Features - **buffer:** `closingNotifier` now supports any `ObservableInput` ([#​7073](ReactiveX/rxjs#7073)) ([61b877a](ReactiveX/rxjs@61b877a)) - **delayWhen:** `delayWhen`'s `delayDurationSelector` now supports any `ObservableInput` ([#​7049](ReactiveX/rxjs#7049)) ([dfd95db](ReactiveX/rxjs@dfd95db)) - **sequenceEqual:** `compareTo` now supports any `ObservableInput` ([#​7102](ReactiveX/rxjs#7102)) ([d501961](ReactiveX/rxjs@d501961)) - **share:** `ShareConfig` factory properties now supports any `ObservableInput` ([#​7093](ReactiveX/rxjs#7093)) ([cc3995a](ReactiveX/rxjs@cc3995a)) - **skipUntil:** `notifier` now supports any `ObservableInput` ([#​7091](ReactiveX/rxjs#7091)) ([60d6c40](ReactiveX/rxjs@60d6c40)) - **window:** `windowBoundaries` now supports any `ObservableInput` ([#​7088](ReactiveX/rxjs#7088)) ([8c4347c](ReactiveX/rxjs@8c4347c)) ### [`v7.7.0`](https://github.com/reactivex/rxjs/blob/HEAD/CHANGELOG.md#​770-httpsgithubcomreactivexrxjscompare760770-2022-12-15) [Compare Source](ReactiveX/rxjs@7.6.0...7.7.0) ##### Features - **distinct:** `flush` argument now supports any `ObservableInput` ([#​7081](ReactiveX/rxjs#7081)) ([74c9ebd](ReactiveX/rxjs@74c9ebd)) - **repeatWhen:** `notifier` supports `ObservableInput` ([#​7103](ReactiveX/rxjs#7103)) ([8f1b976](ReactiveX/rxjs@8f1b976)) - **retryWhen:** `notifier` now supports any `ObservableInput` ([#​7105](ReactiveX/rxjs#7105)) ([794f806](ReactiveX/rxjs@794f806)) - **sample:** `notifier` now supports any `ObservableInput` ([#​7104](ReactiveX/rxjs#7104)) ([b18c2eb](ReactiveX/rxjs@b18c2eb)) ### [`v7.6.0`](https://github.com/reactivex/rxjs/blob/HEAD/CHANGELOG.md#​760-httpsgithubcomreactivexrxjscompare757760-2022-12-03) [Compare Source](ReactiveX/rxjs@7.5.7...7.6.0) ##### Bug Fixes - **schedulers:** no longer cause TypeScript build failures when Node types aren't included ([c1a07b7](ReactiveX/rxjs@c1a07b7)) - **types:** Improved subscribe and tap type overloads ([#​6718](ReactiveX/rxjs#6718)) ([af1a9f4](ReactiveX/rxjs@af1a9f4)), closes [#​6717](ReactiveX/rxjs#6717) ##### Features - **onErrorResumeNextWith:** renamed `onErrorResumeNext` and exported from the top level. (`onErrorResumeNext` operator is stil available, but deprecated) ([#​6755](ReactiveX/rxjs#6755)) ([51e3b2c](ReactiveX/rxjs@51e3b2c)) #### [7.5.7](ReactiveX/rxjs@7.5.6...7.5.7) (2022-09-25) ##### Bug Fixes - **schedulers:** improve performance of animationFrameScheduler and asapScheduler ([#​7059](ReactiveX/rxjs#7059)) ([c93aa60](ReactiveX/rxjs@c93aa60)), closes [#​7017](ReactiveX/rxjs#7017), related to [#​7018](ReactiveX/rxjs#7018) and [#​6674](ReactiveX/rxjs#6674) ##### Performance Improvements - **animationFrames:** uses fewer Subscription instances ([#​7060](ReactiveX/rxjs#7060)) ([2d57b38](ReactiveX/rxjs@2d57b38)), closes [#​7018](ReactiveX/rxjs#7018) #### [7.5.6](ReactiveX/rxjs@7.5.5...7.5.6) (2022-07-11) ##### Bug Fixes - **share:** No longer results in a bad-state observable in an edge case where a synchronous source was shared and refCounted, and the result is subscribed to twice in a row synchronously. ([#​7005](ReactiveX/rxjs#7005)) ([5d4c1d9](ReactiveX/rxjs@5d4c1d9)) - **share & connect:** `share` and `connect` no longer bundle scheduling code by default ([#​6873](ReactiveX/rxjs#6873)) ([9948dc2](ReactiveX/rxjs@9948dc2)), closes [#​6872](ReactiveX/rxjs#6872) - **exhaustAll:** Result will now complete properly when flattening all synchronous observables. ([#​6911](ReactiveX/rxjs#6911)) ([3c1c6b8](ReactiveX/rxjs@3c1c6b8)), closes [#​6910](ReactiveX/rxjs#6910) - **TypeScript:** Now compatible with TypeScript 4.6 type checks ([#​6895](ReactiveX/rxjs#6895)) ([fce9aa1](ReactiveX/rxjs@fce9aa1)) #### [7.5.5](ReactiveX/rxjs@7.5.4...7.5.5) (2022-03-08) ##### Bug Fixes - **package:** add types to exports ([#​6802](ReactiveX/rxjs#6802)) ([3750f75](ReactiveX/rxjs@3750f75)) - **package:** add `require` export condition ([#​6821](ReactiveX/rxjs#6821)) ([c8955e4](ReactiveX/rxjs@c8955e4)) - **timeout:** no longer will timeout when receiving the first value synchronously ([#​6865](ReactiveX/rxjs#6865)) ([2330c96](ReactiveX/rxjs@2330c96)), closes [#​6862](ReactiveX/rxjs#6862) ##### Performance Improvements - Don't clone observers unless you have to ([#​6842](ReactiveX/rxjs#6842)) ([3289d20](ReactiveX/rxjs@3289d20)) #### [7.5.4](ReactiveX/rxjs@7.5.3...7.5.4) (2022-02-09) ##### Performance Improvements - removed code that would `bind` functions passed with observers to `subscribe`. ([#​6815](ReactiveX/rxjs#6815)) ([fb375a0](ReactiveX/rxjs@fb375a0)), closes [#​6783](ReactiveX/rxjs#6783) #### [7.5.3](ReactiveX/rxjs@7.5.2...7.5.3) (2022-02-08) ##### Bug Fixes - **subscribe:** allow interop with Monio and other libraries that patch function bind ([0ab91eb](ReactiveX/rxjs@0ab91eb)), closes [#​6783](ReactiveX/rxjs#6783) #### [7.5.2](ReactiveX/rxjs@7.5.1...7.5.2) (2022-01-11) ##### Bug Fixes - operators that ignore input values now use `unknown` rather than `any`, which should resolve issues with eslint no-unsafe-argument ([#​6738](ReactiveX/rxjs#6738)) ([67cb317](ReactiveX/rxjs@67cb317)), closes [#​6536](ReactiveX/rxjs#6536) - **ajax:** crossDomain flag deprecated and properly reported to consumers ([#​6710](ReactiveX/rxjs#6710)) ([7fd0575](ReactiveX/rxjs@7fd0575)), closes [#​6663](ReactiveX/rxjs#6663) #### [7.5.1](ReactiveX/rxjs@7.5.0...7.5.1) (2021-12-28) ##### Bug Fixes - export supporting interfaces from top-level `rxjs` site. ([#​6733](ReactiveX/rxjs#6733)) ([299a1e1](ReactiveX/rxjs@299a1e1)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNC40OC4wIiwidXBkYXRlZEluVmVyIjoiMzQuNzAuNCJ9--> Co-authored-by: cabr2-bot <cabr2.help@gmail.com> Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1668 Reviewed-by: Epsilon_02 <epsilon_02@noreply.codeberg.org> Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org> Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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No longer require function binding if we aren't using the deprecated next context. This should improve performance in the common path of consumers subscribing with an object or even with a function.
Adds a simple class
ConsumerObserverwhich is mostly meant to optimize the number of function refrences created. We should never expose this externally.Related #6783