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denoland-deno/runtime
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Matt Mastracci 3487fde236
perf(core) Reduce copying and cloning in extension initialization (#18252) 
Follow-up to #18210:

* we are passing the generated `cfg` object into the state function
rather than passing individual config fields
 * reduce cloning dramatically by making the state_fn `FnOnce`
 * `take` for `ExtensionBuilder` to avoid more unnecessary copies
 * renamed `config` to `options`
2023-03-17 22:15:27 +00:00
..
examples refactor(core): pass cwd explicitly to resolve_path (#18092) 2023-03-13 18:50:23 +01:00
js BREAKING(unstable): remove WebGPU (#18094) 2023-03-17 00:29:32 +01:00
ops perf(core) Reduce copying and cloning in extension initialization (#18252) 2023-03-17 22:15:27 +00:00
permissions refactor: remove usages of map_or / map_or_else (#18212) 2023-03-15 17:46:36 -04:00
build.rs perf(core) Reduce copying and cloning in extension initialization (#18252) 2023-03-17 22:15:27 +00:00
Cargo.toml perf: disable runtime snapshot compression (#18239) 2023-03-17 08:49:46 +05:30
colors.rs chore: use rustfmt imports_granularity option (#17421) 2023-01-14 23:18:58 -05:00
errors.rs BREAKING(unstable): remove WebGPU (#18094) 2023-03-17 00:29:32 +01:00
fmt_errors.rs refactor: remove usages of map_or / map_or_else (#18212) 2023-03-15 17:46:36 -04:00
fs_util.rs chore: use rustfmt imports_granularity option (#17421) 2023-01-14 23:18:58 -05:00
inspector_server.rs refactor: use pin! macro from std (#18110) 2023-03-10 02:28:51 +00:00
js.rs perf: disable runtime snapshot compression (#18239) 2023-03-17 08:49:46 +05:30
lib.rs BREAKING(unstable): remove WebGPU (#18094) 2023-03-17 00:29:32 +01:00
README.md chore: fix decendents in runtime readme (#9718) 2021-03-08 13:23:46 +01:00
tokio_util.rs chore: update copyright year to 2023 (#17247) 2023-01-02 21:00:42 +00:00
web_worker.rs perf(core) Reduce copying and cloning in extension initialization (#18252) 2023-03-17 22:15:27 +00:00
worker.rs perf(core) Reduce copying and cloning in extension initialization (#18252) 2023-03-17 22:15:27 +00:00
worker_bootstrap.rs perf(core, runtime): Further improve startup time (#17860) 2023-02-22 06:25:31 +05:30

README.md

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 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.