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denoland-deno/bench_util/src/js_runtime.rs
Bartek Iwańczuk e5beb800c9
refactor: move JsRuntimeInspector to deno_core (#10763)
This commit moves implementation of "JsRuntimeInspector" to "deno_core" crate.

To achieve that following changes were made:

* "Worker" and "WebWorker" no longer own instance of "JsRuntimeInspector",
instead it is now owned by "deno_core::JsRuntime".

* Consequently polling of inspector is no longer done in "Worker"/"WebWorker",
instead it's done in "deno_core::JsRuntime::poll_event_loop".

* "deno_core::JsRuntime::poll_event_loop" and "deno_core::JsRuntime::run_event_loop",
now accept "wait_for_inspector" boolean that tells if event loop should still be 
"pending" if there are active inspector sessions - this change fixes the problem 
that inspector disconnects from the frontend and process exits once the code has
stopped executing.
2021-05-26 21:07:12 +02:00

76 lines
1.9 KiB
Rust

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use bencher::Bencher;
use deno_core::v8;
use deno_core::Extension;
use deno_core::JsRuntime;
use deno_core::RuntimeOptions;
use crate::profiling::is_profiling;
pub fn create_js_runtime(setup: impl FnOnce() -> Vec<Extension>) -> JsRuntime {
JsRuntime::new(RuntimeOptions {
extensions: setup(),
..Default::default()
})
}
fn loop_code(iters: u64, src: &str) -> String {
format!(r#"for(let i=0; i < {}; i++) {{ {} }}"#, iters, src,)
}
pub fn bench_js_sync(
b: &mut Bencher,
src: &str,
setup: impl FnOnce() -> Vec<Extension>,
) {
let mut runtime = create_js_runtime(setup);
let scope = &mut runtime.handle_scope();
// Increase JS iterations if profiling for nicer flamegraphs
let inner_iters = 1000 * if is_profiling() { 10000 } else { 1 };
// Looped code
let looped_src = loop_code(inner_iters, src);
let code = v8::String::new(scope, looped_src.as_ref()).unwrap();
let script = v8::Script::compile(scope, code, None).unwrap();
// Run once if profiling, otherwise regular bench loop
if is_profiling() {
script.run(scope).unwrap();
} else {
b.iter(|| {
script.run(scope).unwrap();
});
}
}
pub fn bench_js_async(
b: &mut Bencher,
src: &str,
setup: impl FnOnce() -> Vec<Extension>,
) {
let mut runtime = create_js_runtime(setup);
let tokio_runtime = tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.unwrap();
// Looped code
let looped = loop_code(1000, src);
let src = looped.as_ref();
if is_profiling() {
for _ in 0..10000 {
tokio_runtime.block_on(inner_async(src, &mut runtime));
}
} else {
b.iter(|| {
tokio_runtime.block_on(inner_async(src, &mut runtime));
});
}
}
async fn inner_async(src: &str, runtime: &mut JsRuntime) {
runtime.execute("inner_loop", src).unwrap();
runtime.run_event_loop(false).await.unwrap();
}