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This is a follow-on to the earlier work in reducing string copies, mainly focused on ensuring that ASCII strings are easy to provide to the JS runtime. While we are replacing a 16-byte reference in a number of places with a 24-byte structure (measured via `std::mem::size_of`), the reduction in copies wins out over the additional size of the arguments passed into functions. Benchmarking shows approximately the same if not slightly less wallclock time/instructions retired, but I believe this continues to open up further refactoring opportunities. |
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|---|---|---|
| .. | ||
| benches | ||
| Cargo.toml | ||
| js_runtime.rs | ||
| lib.rs | ||
| profiling.rs | ||
| README.md | ||
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);