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Revert "Add "to Rust string" benchmarks" (#1576)

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Revert "Add "to Rust string" benchmarks (#1566)"

This reverts commit fa9db41e55.
This commit is contained in:
Divy Srivastava 2024-08-16 03:41:36 -07:00 committed by GitHub
parent fa9db41e55
commit 733f79a08b
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2 changed files with 0 additions and 175 deletions
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5
Cargo.toml
View File

@ -125,11 +125,6 @@ name = "process"
name = "build" name = "build"
path = "build.rs" path = "build.rs"
[[bench]]
name = "to_string"
path = "benches/to_string.rs"
harness = false
[[bench]] [[bench]]
name = "function" name = "function"
path = "benches/function.rs" path = "benches/function.rs"

170
benches/to_string.rs
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@ -1,170 +0,0 @@
fn main() {
// Skip running benchmarks in debug or CI.
if cfg!(debug_assertions) || std::env::var("CI").is_ok() {
return;
}
v8::V8::set_flags_from_string(
"--turbo_fast_api_calls --allow_natives_syntax",
);
let platform = v8::new_default_platform(0, false).make_shared();
v8::V8::initialize_platform(platform);
v8::V8::initialize();
let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
let handle_scope = &mut v8::HandleScope::new(isolate);
let context = v8::Context::new(handle_scope, Default::default());
let scope = &mut v8::ContextScope::new(handle_scope, context);
let global = context.global(scope);
{
let func = v8::Function::new(
scope,
|scope: &mut v8::HandleScope,
arg: v8::FunctionCallbackArguments,
mut rv: v8::ReturnValue| {
let first = arg.get(0);
let string = first.to_string(scope).unwrap();
let view = v8::ValueView::new(scope, string);
if let v8::ValueViewData::OneByte(data) = view.data() {
if data.is_ascii() {
rv.set_uint32(data.len() as u32);
return;
}
};
let mut buffer = [std::mem::MaybeUninit::<u8>::uninit(); 1024];
let out = string.to_rust_cow_lossy(scope, &mut buffer);
rv.set_uint32(out.len() as u32);
},
)
.unwrap();
let name = v8::String::new(scope, "valueview").unwrap();
global.set(scope, name.into(), func.into()).unwrap();
}
{
let func = v8::Function::new(
scope,
|scope: &mut v8::HandleScope,
arg: v8::FunctionCallbackArguments,
mut rv: v8::ReturnValue| {
let first = arg.get(0);
let string = first.to_string(scope).unwrap();
let mut buffer = [std::mem::MaybeUninit::<u8>::uninit(); 1024];
let out = string.to_rust_cow_lossy(scope, &mut buffer);
rv.set_uint32(out.len() as u32);
},
)
.unwrap();
let name =
v8::String::new(scope, "to_rust_cow_lossy_stack_buffer").unwrap();
global.set(scope, name.into(), func.into()).unwrap();
}
{
let func = v8::Function::new(
scope,
|scope: &mut v8::HandleScope,
arg: v8::FunctionCallbackArguments,
mut rv: v8::ReturnValue| {
let first = arg.get(0);
let string = first.to_string(scope).unwrap();
let mut buffer: [std::mem::MaybeUninit<u8>; 0] = [];
let out = string.to_rust_cow_lossy(scope, &mut buffer);
rv.set_uint32(out.len() as u32);
},
)
.unwrap();
let name = v8::String::new(scope, "to_rust_cow_lossy").unwrap();
global.set(scope, name.into(), func.into()).unwrap();
}
{
fn fast_fn(
_recv: v8::Local<v8::Object>,
data: *const v8::fast_api::FastApiOneByteString,
) -> u32 {
let data = unsafe { &*data }.as_bytes();
data.len() as u32
}
const FAST_CALL: v8::fast_api::FastFunction =
v8::fast_api::FastFunction::new(
&[
v8::fast_api::Type::V8Value,
v8::fast_api::Type::SeqOneByteString,
],
v8::fast_api::CType::Uint32,
fast_fn as _,
);
let template = v8::FunctionTemplate::builder(
|scope: &mut v8::HandleScope,
arg: v8::FunctionCallbackArguments,
mut rv: v8::ReturnValue| {
let first = arg.get(0);
let string = first.to_string(scope).unwrap();
let view = v8::ValueView::new(scope, string);
if let v8::ValueViewData::OneByte(data) = view.data() {
if data.is_ascii() {
rv.set_uint32(data.len() as u32);
return;
}
};
let mut buffer = [std::mem::MaybeUninit::<u8>::uninit(); 1024];
let out = string.to_rust_cow_lossy(scope, &mut buffer);
rv.set_uint32(out.len() as u32);
},
)
.build_fast(scope, &FAST_CALL, None, None, None);
let name = v8::String::new(scope, "fast_seqonebytestr").unwrap();
let value = template.get_function(scope).unwrap();
global.set(scope, name.into(), value.into()).unwrap();
}
let runs = 100_000_000;
for x in &[
"to_rust_cow_lossy",
"to_rust_cow_lossy_stack_buffer",
"valueview",
"fast_seqonebytestr",
] {
let code = format!(
"
function bench() {{ return {}('Hello'); }};
runs = {};
start = Date.now();
for (i = 0; i < runs; i++) bench();
Date.now() - start;
",
x, runs
);
let r = eval(scope, &code).unwrap();
let number = r.to_number(scope).unwrap();
let total_ms = number.number_value(scope).unwrap();
let total_ns = 1e6 * total_ms;
let ns_per_run = total_ns / (runs as f64);
let mops_per_sec = (runs as f64) / (total_ms / 1000.0) / 1e6;
println!(
" {:.1} ns per run {:.1} million ops/sec → {}",
ns_per_run, mops_per_sec, x
);
}
}
fn eval<'s>(
scope: &mut v8::HandleScope<'s>,
code: &str,
) -> Option<v8::Local<'s, v8::Value>> {
let scope = &mut v8::EscapableHandleScope::new(scope);
let source = v8::String::new(scope, code).unwrap();
let script = v8::Script::compile(scope, source, None).unwrap();
let r = script.run(scope);
r.map(|v| scope.escape(v))
}