ef20aedfa8
This commit changes "eager ops" to directly return a response value instead of calling "opresponse" callback in JavaScript. This saves one boundary crossing and has a fantastic impact on the "async_ops.js" benchmark: ``` v1.32.4 $ deno run cli/bench/async_ops.js time 329 ms rate 3039513 time 322 ms rate 3105590 time 307 ms rate 3257328 time 301 ms rate 3322259 time 303 ms rate 3300330 time 306 ms rate 3267973 time 300 ms rate 3333333 time 301 ms rate 3322259 time 301 ms rate 3322259 time 301 ms rate 3322259 time 302 ms rate 3311258 time 301 ms rate 3322259 time 302 ms rate 3311258 time 302 ms rate 3311258 time 303 ms rate 3300330 ``` ``` this branch $ ./target/release/deno run -A cli/bench/async_ops.js time 257 ms rate 3891050 time 248 ms rate 4032258 time 251 ms rate 3984063 time 246 ms rate 4065040 time 238 ms rate 4201680 time 227 ms rate 4405286 time 228 ms rate 4385964 time 229 ms rate 4366812 time 228 ms rate 4385964 time 226 ms rate 4424778 time 226 ms rate 4424778 time 227 ms rate 4405286 time 228 ms rate 4385964 time 227 ms rate 4405286 time 228 ms rate 4385964 time 227 ms rate 4405286 time 229 ms rate 4366812 time 228 ms rate 4385964 ``` Prerequisite for https://github.com/denoland/deno/pull/18652 |
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|---|---|---|
| .. | ||
| examples | ||
| 00_primordials.js | ||
| 01_core.js | ||
| 02_error.js | ||
| async_cancel.rs | ||
| async_cell.rs | ||
| bindings.rs | ||
| Cargo.toml | ||
| encode_decode_test.js | ||
| error.rs | ||
| error_builder_test.js | ||
| error_codes.rs | ||
| extensions.rs | ||
| fast_string.rs | ||
| flags.rs | ||
| gotham_state.rs | ||
| icudtl.dat | ||
| inspector.rs | ||
| internal.d.ts | ||
| io.rs | ||
| lib.deno_core.d.ts | ||
| lib.rs | ||
| module_specifier.rs | ||
| modules.rs | ||
| normalize_path.rs | ||
| ops.rs | ||
| ops_builtin.rs | ||
| ops_builtin_v8.rs | ||
| ops_metrics.rs | ||
| README.md | ||
| realm.rs | ||
| resources.rs | ||
| runtime.rs | ||
| serialize_deserialize_test.js | ||
| snapshot_util.rs | ||
| source_map.rs | ||
| task_queue.rs | ||
Deno Core Crate
The main dependency of this crate is rusty_v8, which provides the V8-Rust bindings.
This Rust crate contains the essential V8 bindings for Deno's command-line interface (Deno CLI). The main abstraction here is the JsRuntime which provides a way to execute JavaScript.
The JsRuntime implements an event loop abstraction for the executed code that
keeps track of all pending tasks (async ops, dynamic module loads). It is user's
responsibility to drive that loop by using JsRuntime::run_event_loop method -
it must be executed in the context of Rust's future executor (eg. tokio, smol).
Rust functions can be registered in JavaScript using deno_core::Extension. Use
the Deno.core.ops.op_name() and Deno.core.opAsync("op_name", ...) functions
to trigger the op function callback. A conventional way to write ops is using
the deno_ops crate.
Documentation for this crate is thin at the moment. Please see hello_world.rs and http_bench_json_ops.rs as examples of usage.
TypeScript support and lots of other functionality are not available at this layer. See the CLI for that.