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denoland-deno/cli/ops/bench.rs

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::sync::atomic::AtomicUsize;
use std::sync::atomic::Ordering;
use std::time;
use deno_core::error::generic_error;
use deno_core::error::AnyError;
use deno_core::op2;
use deno_core::serde_v8;
use deno_core::v8;
use deno_core::ModuleSpecifier;
use deno_core::OpState;
use deno_runtime::permissions::create_child_permissions;
use deno_runtime::permissions::ChildPermissionsArg;
use deno_runtime::permissions::PermissionsContainer;
use serde::Deserialize;
use serde::Serialize;
use tokio::sync::mpsc::UnboundedSender;
use uuid::Uuid;
use crate::tools::bench::BenchDescription;
use crate::tools::bench::BenchEvent;
#[derive(Default)]
pub(crate) struct BenchContainer(
pub Vec<(BenchDescription, v8::Global<v8::Function>)>,
);
deno_core::extension!(deno_bench,
ops = [
op_pledge_test_permissions,
op_restore_test_permissions,
op_register_bench,
op_dispatch_bench_event,
op_bench_now,
],
options = {
sender: UnboundedSender<BenchEvent>,
},
state = |state, options| {
state.put(options.sender);
state.put(BenchContainer::default());
},
);
#[derive(Clone)]
struct PermissionsHolder(Uuid, PermissionsContainer);
#[op2]
#[serde]
pub fn op_pledge_test_permissions(
state: &mut OpState,
#[serde] args: ChildPermissionsArg,
) -> Result<Uuid, AnyError> {
let token = Uuid::new_v4();
let parent_permissions = state.borrow_mut::<PermissionsContainer>();
let worker_permissions = {
let mut parent_permissions = parent_permissions.0.lock();
let perms = create_child_permissions(&mut parent_permissions, args)?;
PermissionsContainer::new(perms)
};
let parent_permissions = parent_permissions.clone();
if state.try_take::<PermissionsHolder>().is_some() {
panic!("pledge test permissions called before restoring previous pledge");
}
state.put::<PermissionsHolder>(PermissionsHolder(token, parent_permissions));
// NOTE: This call overrides current permission set for the worker
state.put::<PermissionsContainer>(worker_permissions);
Ok(token)
}
#[op2]
pub fn op_restore_test_permissions(
state: &mut OpState,
#[serde] token: Uuid,
) -> Result<(), AnyError> {
if let Some(permissions_holder) = state.try_take::<PermissionsHolder>() {
if token != permissions_holder.0 {
panic!("restore test permissions token does not match the stored token");
}
let permissions = permissions_holder.1;
state.put::<PermissionsContainer>(permissions);
Ok(())
} else {
Err(generic_error("no permissions to restore"))
}
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct BenchInfo<'s> {
#[serde(rename = "fn")]
function: serde_v8::Value<'s>,
name: String,
baseline: bool,
group: Option<String>,
ignore: bool,
only: bool,
#[serde(default)]
warmup: bool,
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
struct BenchRegisterResult {
id: usize,
origin: String,
}
static NEXT_ID: AtomicUsize = AtomicUsize::new(0);
#[op2]
#[serde]
fn op_register_bench<'a>(
scope: &mut v8::HandleScope<'a>,
state: &mut OpState,
#[serde] info: BenchInfo<'a>,
) -> Result<BenchRegisterResult, AnyError> {
let id = NEXT_ID.fetch_add(1, Ordering::SeqCst);
let origin = state.borrow::<ModuleSpecifier>().to_string();
let description = BenchDescription {
id,
name: info.name,
origin: origin.clone(),
baseline: info.baseline,
group: info.group,
ignore: info.ignore,
only: info.only,
warmup: info.warmup,
};
let function: v8::Local<v8::Function> = info.function.v8_value.try_into()?;
let function = v8::Global::new(scope, function);
state
.borrow_mut::<BenchContainer>()
.0
.push((description.clone(), function));
let sender = state.borrow::<UnboundedSender<BenchEvent>>().clone();
sender.send(BenchEvent::Register(description)).ok();
Ok(BenchRegisterResult { id, origin })
}
#[op2]
fn op_dispatch_bench_event(state: &mut OpState, #[serde] event: BenchEvent) {
assert!(
matches!(event, BenchEvent::Output(_)),
"Only output events are expected from JS."
);
let sender = state.borrow::<UnboundedSender<BenchEvent>>().clone();
sender.send(event).ok();
}
#[op2(fast)]
#[number]
fn op_bench_now(state: &mut OpState) -> Result<u64, AnyError> {
let ns = state.borrow::<time::Instant>().elapsed().as_nanos();
let ns_u64 = u64::try_from(ns)?;
Ok(ns_u64)
}