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denoland-deno/bench_util
Matt Mastracci 0b4770fa7d
perf(core) Reduce script name and script code copies (#18298)
Reduce the number of copies and allocations of script code by carrying
around ownership/reference information from creation time.

As an advantage, this allows us to maintain the identity of `&'static
str`-based scripts and use v8's external 1-byte strings (to avoid
incorrectly passing non-ASCII strings, debug `assert!`s gate all string
reference paths).

Benchmark results:

Perf improvements -- ~0.1 - 0.2ms faster, but should reduce garbage
w/external strings and reduces data copies overall. May also unlock some
more interesting optimizations in the future.

This requires adding some generics to functions, but manual
monomorphization has been applied (outer/inner function) to avoid code
bloat.
2023-03-21 22:33:12 +00:00
..
benches Reland "perf(core): preserve ops between snapshots (#18080)" (#18272) 2023-03-18 18:30:04 -04:00
Cargo.toml chore: forward v1.31.3 release commit to main (#18222) 2023-03-16 17:09:26 +09:00
js_runtime.rs perf(core) Reduce script name and script code copies (#18298) 2023-03-21 22:33:12 +00:00
lib.rs chore: update copyright year to 2023 (#17247) 2023-01-02 21:00:42 +00:00
profiling.rs chore: use rustfmt imports_granularity option (#17421) 2023-01-14 23:18:58 -05:00
README.md perf(ops): Monomorphic sync op calls (#15337) 2022-08-11 15:56:56 +02:00

Benching utility for deno_core op system

Example:

use deno_bench_util::bench_or_profile;
use deno_bench_util::bencher::{benchmark_group, Bencher};
use deno_bench_util::bench_js_sync};

use deno_core::op_sync;
use deno_core::serialize_op_result;
use deno_core::Extension;
use deno_core::JsRuntime;
use deno_core::Op;
use deno_core::OpState;

fn setup() -> Vec<Extension> {
  let custom_ext = Extension::builder()
    .ops(vec![
      ("op_nop", |state, _| {
        Op::Sync(serialize_op_result(Ok(9), state))
      }),
    ])
    .build();
  
  vec![
    // deno_{ext}::init(...),
    custom_ext,
  ]
}

fn bench_op_nop(b: &mut Bencher) {
  bench_js_sync(b, r#"Deno.core.ops.op_nop();"#, setup);
}

benchmark_group!(benches, bench_op_nop);
bench_or_profile!(benches);