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deno/runtime
Nathan Whitaker 69b59b2296
perf(http): instantiate generic functions in deno_http, increase opt-level for some more hyper deps (#28317)
results on my machine (Macbook pro w/ M3 Max)

canary (hello world):
```
❯ oha -c 125 -n 4000000 --no-tui --disable-compression http://localhost:8000
Summary:
  Success rate: 100.00%
  Total:        31.0160 secs
  Slowest:      0.0083 secs
  Fastest:      0.0005 secs
  Average:      0.0010 secs
  Requests/sec: 128965.6454

  Total data:   49.59 MiB
  Size/request: 13 B
  Size/sec:     1.60 MiB
```

this PR (hello world):
```
❯ oha -c 125 -n 4000000 --no-tui --disable-compression http://localhost:8000
Summary:
  Success rate: 100.00%
  Total:        28.4050 secs
  Slowest:      0.0085 secs
  Fastest:      0.0001 secs
  Average:      0.0009 secs
  Requests/sec: 140820.2060

  Total data:   49.59 MiB
  Size/request: 13 B
  Size/sec:     1.75 MiB
```

---

Two changes here:
- use `opt-level` 3 for some of hyper's deps, since profile overrides
are not transitive
- As noted in the [cargo
reference](https://doc.rust-lang.org/cargo/reference/profiles.html#overrides-and-generics)
generic functions _may_ be optimized at the opt-level of the
_instantiating_ crate, rather than the defining crate. So currently it's
possible that some of the functions in `deno_http` are being compiled at
a lower optimization level. This PR ensures the generics are
instantiated in `deno_http`, which theoretically should guarantee they
actually use opt-level 3.

To allow embedders to still provide a custom property extractor, I put
this behind a feature flag.
2025-02-27 10:07:11 -08:00
..
examples/extension refactor: create deno_lib crate (#27673) 2025-01-15 09:35:46 -05:00
js feat(jupyter): make GPUTexture and GPUBuffer displayable (#28117) 2025-02-18 00:29:45 -08:00
ops refactor: add 'deno_process' crate (#27680) 2025-01-17 13:30:14 +01:00
permissions chore: prefer workspace dependencies in order to avoid duplicate crates (#28281) 2025-02-26 14:55:47 +00:00
Cargo.toml chore: prefer workspace dependencies in order to avoid duplicate crates (#28281) 2025-02-26 14:55:47 +00:00
clippy.toml fix: otel resiliency (#26857) 2024-11-14 12:16:28 +00:00
code_cache.rs chore: Happy New Year 2025 (#27509) 2024-12-31 19:12:39 +00:00
fmt_errors.rs fix: add info suggestion for unsafely-ignore-certificate-errors and add --help=full (#28203) 2025-02-24 08:20:59 -08:00
fs_util.rs refactor: update deno_core and use more concrete errors (#27620) 2025-01-17 09:41:52 -08:00
inspector_server.rs refactor: update deno_core and use more concrete errors (#27620) 2025-01-17 09:41:52 -08:00
js.rs chore: Happy New Year 2025 (#27509) 2024-12-31 19:12:39 +00:00
lib.rs refactor(lsp): make TS host use CLI snapshot (#28062) 2025-02-11 18:33:04 +01:00
permissions.rs chore: Happy New Year 2025 (#27509) 2024-12-31 19:12:39 +00:00
README.md fix (doc): Typo in runtime/README.md (#20020) 2023-12-13 17:24:32 +00:00
shared.rs perf(compile): remove swc from denort (#27721) 2025-01-19 14:23:07 -05:00
snapshot.rs perf(http): instantiate generic functions in deno_http, increase opt-level for some more hyper deps (#28317) 2025-02-27 10:07:11 -08:00
snapshot_info.rs perf(http): instantiate generic functions in deno_http, increase opt-level for some more hyper deps (#28317) 2025-02-27 10:07:11 -08:00
tokio_util.rs chore: Happy New Year 2025 (#27509) 2024-12-31 19:12:39 +00:00
transpile.rs chore: fix hmr build (#27781) 2025-01-22 18:00:36 +00:00
web_worker.rs perf(http): instantiate generic functions in deno_http, increase opt-level for some more hyper deps (#28317) 2025-02-27 10:07:11 -08:00
worker.rs perf(http): instantiate generic functions in deno_http, increase opt-level for some more hyper deps (#28317) 2025-02-27 10:07:11 -08:00
worker_bootstrap.rs chore: fix canary version (#27723) 2025-01-19 11:19:47 +01:00

deno_runtime crate

crates docs

This is a slim version of the Deno CLI which removes typescript integration and various tooling (like lint and doc). Basically only JavaScript execution with Deno's operating system bindings (ops).

Stability

This crate is built using battle-tested modules that were originally in the deno crate, however the API of this crate is subject to rapid and breaking changes.

MainWorker

The main API of this crate is MainWorker. MainWorker is a structure encapsulating deno_core::JsRuntime with a set of ops used to implement Deno namespace.

When creating a MainWorker implementors must call MainWorker::bootstrap to prepare JS runtime for use.

MainWorker is highly configurable and allows to customize many of the runtime's properties:

  • module loading implementation
  • error formatting
  • support for source maps
  • support for V8 inspector and Chrome Devtools debugger
  • HTTP client user agent, CA certificate
  • random number generator seed

Worker Web API

deno_runtime comes with support for Worker Web API. The Worker API is implemented using WebWorker structure.

When creating a new instance of MainWorker implementors must provide a callback function that is used when creating a new instance of Worker.

All WebWorker instances are descendents of MainWorker which is responsible for setting up communication with child worker. Each WebWorker spawns a new OS thread that is dedicated solely to that worker.