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https://github.com/denoland/deno.git
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157 lines
4 KiB
Rust
157 lines
4 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use bencher::{benchmark_group, benchmark_main, Bencher};
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use serde::Deserialize;
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use serde_v8::utils::{js_exec, v8_do};
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#[derive(Debug, Deserialize, PartialEq)]
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struct MathOp {
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arg1: u64,
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arg2: u64,
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operator: Option<String>,
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}
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fn dedo(
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code: &str,
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f: impl FnOnce(&mut v8::HandleScope, v8::Local<v8::Value>),
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) {
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v8_do(|| {
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let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
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let handle_scope = &mut v8::HandleScope::new(isolate);
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let context = v8::Context::new(handle_scope);
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let scope = &mut v8::ContextScope::new(handle_scope, context);
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let v = js_exec(scope, code);
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f(scope, v);
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})
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}
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fn dedo_json(code: &str, f: impl FnOnce(String)) {
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let code = format!("JSON.stringify({})", code);
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dedo(&code[..], |scope, v| {
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let s: String = serde_v8::from_v8(scope, v).unwrap();
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f(s);
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})
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}
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fn de_struct_v8(b: &mut Bencher) {
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dedo("({arg1: 10, arg2: 123 })", |scope, obj| {
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let mut total = 0;
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b.iter(move || {
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let op: MathOp = serde_v8::from_v8(scope, obj).unwrap();
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total = total + op.arg1 + op.arg2;
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});
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});
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}
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fn de_struct_v8_opt(b: &mut Bencher) {
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dedo("({arg1: 10, arg2: 123 })", |scope, v| {
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let k_arg1 = v8::String::new(scope, "arg1").unwrap().into();
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let k_arg2 = v8::String::new(scope, "arg2").unwrap().into();
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let obj = v8::Local::<v8::Object>::try_from(v).unwrap();
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let mut total = 0;
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b.iter(move || {
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let v_arg1 = obj.get(scope, k_arg1).unwrap();
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let v_arg2 = obj.get(scope, k_arg2).unwrap();
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let op = MathOp {
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arg1: serde_v8::from_v8(scope, v_arg1).unwrap(),
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arg2: serde_v8::from_v8(scope, v_arg2).unwrap(),
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operator: None,
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};
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total = total + op.arg1 + op.arg2;
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});
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});
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}
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fn de_struct_json(b: &mut Bencher) {
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dedo_json("({arg1: 10, arg2: 123 })", |s| {
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let mut total = 0;
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b.iter(move || {
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let op: MathOp = serde_json::from_str(&s).unwrap();
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total = total + op.arg1 + op.arg2;
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});
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});
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}
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fn de_struct_json_deopt(b: &mut Bencher) {
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// JSON.stringify() in loop (semi-simulating ABI loop)
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dedo("({arg1: 10, arg2: 123 })", |scope, obj| {
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let mut total = 0;
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b.iter(move || {
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let mut scope = v8::HandleScope::new(scope);
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let s = v8::json::stringify(&mut scope, obj).unwrap();
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let rs = s.to_rust_string_lossy(&mut scope);
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let op: MathOp = serde_json::from_str(&rs).unwrap();
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total = total + op.arg1 + op.arg2;
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});
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});
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}
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macro_rules! dualbench {
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($v8_fn:ident, $json_fn:ident, $src:expr, $t:ty) => {
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fn $v8_fn(b: &mut Bencher) {
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dedo($src, |scope, v| {
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b.iter(move || {
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let _: $t = serde_v8::from_v8(scope, v).unwrap();
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});
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});
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}
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fn $json_fn(b: &mut Bencher) {
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dedo_json($src, |s| {
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b.iter(move || {
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let _: $t = serde_json::from_str(&s).unwrap();
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});
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});
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}
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};
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}
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dualbench!(de_bool_v8, de_bool_json, "true", bool);
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dualbench!(de_int_v8, de_int_json, "12345", u32);
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dualbench!(
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de_array_v8,
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de_array_json,
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"[1,2,3,4,5,6,7,8,9,10]",
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Vec<u32>
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);
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dualbench!(de_str_v8, de_str_json, "'hello world'", String);
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dualbench!(de_tuple_v8, de_tuple_json, "[1,false]", (u8, bool));
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fn de_tuple_v8_opt(b: &mut Bencher) {
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dedo("[1,false]", |scope, obj| {
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let arr = v8::Local::<v8::Array>::try_from(obj).unwrap();
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let obj = v8::Local::<v8::Object>::from(arr);
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b.iter(move || {
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let v1 = obj.get_index(scope, 0).unwrap();
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let v2 = obj.get_index(scope, 1).unwrap();
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let _: (u8, bool) = (
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serde_v8::from_v8(scope, v1).unwrap(),
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serde_v8::from_v8(scope, v2).unwrap(),
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);
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});
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});
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}
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benchmark_group!(
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benches,
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de_struct_v8,
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de_struct_v8_opt,
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de_struct_json,
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de_struct_json_deopt,
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de_bool_v8,
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de_bool_json,
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de_int_v8,
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de_int_json,
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de_array_v8,
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de_array_json,
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de_str_v8,
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de_str_json,
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de_tuple_v8,
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de_tuple_json,
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de_tuple_v8_opt,
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);
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benchmark_main!(benches);
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