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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use bencher::{benchmark_group, benchmark_main, Bencher};
use serde::Deserialize;
use serde_v8::utils::{js_exec, v8_do};
use serde_v8::ByteString;
#[derive(Debug, Deserialize, PartialEq)]
struct MathOp {
arg1: u64,
arg2: u64,
operator: Option<String>,
}
fn dedo(
code: &str,
f: impl FnOnce(&mut v8::HandleScope, v8::Local<v8::Value>),
) {
v8_do(|| {
let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
let handle_scope = &mut v8::HandleScope::new(isolate);
let context = v8::Context::new(handle_scope);
let scope = &mut v8::ContextScope::new(handle_scope, context);
let v = js_exec(scope, code);
f(scope, v);
})
}
fn dedo_json(code: &str, f: impl FnOnce(String)) {
let code = format!("JSON.stringify({})", code);
dedo(&code[..], |scope, v| {
let s: String = serde_v8::from_v8(scope, v).unwrap();
f(s);
})
}
fn de_struct_v8(b: &mut Bencher) {
dedo("({arg1: 10, arg2: 123 })", |scope, obj| {
let mut total = 0;
b.iter(move || {
let op: MathOp = serde_v8::from_v8(scope, obj).unwrap();
total = total + op.arg1 + op.arg2;
});
});
}
fn de_struct_v8_opt(b: &mut Bencher) {
dedo("({arg1: 10, arg2: 123 })", |scope, v| {
let k_arg1 = v8::String::new(scope, "arg1").unwrap().into();
let k_arg2 = v8::String::new(scope, "arg2").unwrap().into();
let obj = v8::Local::<v8::Object>::try_from(v).unwrap();
let mut total = 0;
b.iter(move || {
let v_arg1 = obj.get(scope, k_arg1).unwrap();
let v_arg2 = obj.get(scope, k_arg2).unwrap();
let op = MathOp {
arg1: serde_v8::from_v8(scope, v_arg1).unwrap(),
arg2: serde_v8::from_v8(scope, v_arg2).unwrap(),
operator: None,
};
total = total + op.arg1 + op.arg2;
});
});
}
fn de_struct_json(b: &mut Bencher) {
dedo_json("({arg1: 10, arg2: 123 })", |s| {
let mut total = 0;
b.iter(move || {
let op: MathOp = serde_json::from_str(&s).unwrap();
total = total + op.arg1 + op.arg2;
});
});
}
fn de_struct_json_deopt(b: &mut Bencher) {
// JSON.stringify() in loop (semi-simulating ABI loop)
dedo("({arg1: 10, arg2: 123 })", |scope, obj| {
let mut total = 0;
b.iter(move || {
let mut scope = v8::HandleScope::new(scope);
let s = v8::json::stringify(&mut scope, obj).unwrap();
let rs = s.to_rust_string_lossy(&mut scope);
let op: MathOp = serde_json::from_str(&rs).unwrap();
total = total + op.arg1 + op.arg2;
});
});
}
macro_rules! dualbench {
($v8_fn:ident, $json_fn:ident, $src:expr, $t:ty) => {
fn $v8_fn(b: &mut Bencher) {
dedo($src, |scope, v| {
b.iter(move || {
let _: $t = serde_v8::from_v8(scope, v).unwrap();
});
});
}
fn $json_fn(b: &mut Bencher) {
dedo_json($src, |s| {
b.iter(move || {
let _: $t = serde_json::from_str(&s).unwrap();
});
});
}
};
}
dualbench!(de_bool_v8, de_bool_json, "true", bool);
dualbench!(de_int_v8, de_int_json, "12345", u32);
dualbench!(
de_array_v8,
de_array_json,
"[1,2,3,4,5,6,7,8,9,10]",
Vec<u32>
);
dualbench!(de_str_v8, de_str_json, "'hello world'", String);
dualbench!(de_tuple_v8, de_tuple_json, "[1,false]", (u8, bool));
fn de_tuple_v8_opt(b: &mut Bencher) {
dedo("[1,false]", |scope, obj| {
let arr = v8::Local::<v8::Array>::try_from(obj).unwrap();
let obj = v8::Local::<v8::Object>::from(arr);
b.iter(move || {
let v1 = obj.get_index(scope, 0).unwrap();
let v2 = obj.get_index(scope, 1).unwrap();
let _: (u8, bool) = (
serde_v8::from_v8(scope, v1).unwrap(),
serde_v8::from_v8(scope, v2).unwrap(),
);
});
});
}
fn de_bstr_v8_12_b(b: &mut Bencher) {
dedo(r#""hello world\n""#, |scope, v| {
b.iter(move || {
let _: ByteString = serde_v8::from_v8(scope, v).unwrap();
});
});
}
fn de_bstr_v8_1024_b(b: &mut Bencher) {
dedo(
r#""hello world\n".repeat(1e2).slice(0, 1024)"#,
|scope, v| {
b.iter(move || {
let _: ByteString = serde_v8::from_v8(scope, v).unwrap();
});
},
);
}
benchmark_group!(
benches,
de_struct_v8,
de_struct_v8_opt,
de_struct_json,
de_struct_json_deopt,
de_bool_v8,
de_bool_json,
de_int_v8,
de_int_json,
de_array_v8,
de_array_json,
de_str_v8,
de_str_json,
de_tuple_v8,
de_tuple_json,
de_tuple_v8_opt,
de_bstr_v8_12_b,
de_bstr_v8_1024_b,
);
benchmark_main!(benches);
|
