dfe137786c
Make constructing of a new Evaluation use the builder pattern rather than setting public mutable fields. This is currently a pure refactor (no functionality has changed) but has a few advantages: - We've encapsulated the internals of the fields in Evaluation, meaning we can change them without too much breakage of clients - We have type safety that prevents us from ever changing the fields of an Evaluation after it's built (which matters more in a world where we reuse Evaluations). More importantly, this paves the road for doing different things with the construction of an Evaluation - notably, sharing certain things like the GlobalsMap across subsequent evaluations in eg the REPL. Fixes: b/262 Change-Id: I4a27116faac14cdd144fc7c992d14ae095a1aca4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11956 Tested-by: BuildkiteCI Autosubmit: aspen <root@gws.fyi> Reviewed-by: flokli <flokli@flokli.de>
78 lines
2.7 KiB
Rust
78 lines
2.7 KiB
Rust
use criterion::{black_box, criterion_group, criterion_main, Criterion};
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use lazy_static::lazy_static;
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use std::{env, rc::Rc, sync::Arc, time::Duration};
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#[cfg(not(target_env = "msvc"))]
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use tikv_jemallocator::Jemalloc;
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use tvix_build::buildservice::DummyBuildService;
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use tvix_eval::{builtins::impure_builtins, EvalIO};
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use tvix_glue::{
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builtins::{add_derivation_builtins, add_fetcher_builtins, add_import_builtins},
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configure_nix_path,
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tvix_io::TvixIO,
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tvix_store_io::TvixStoreIO,
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};
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use tvix_store::utils::construct_services;
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#[cfg(not(target_env = "msvc"))]
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#[global_allocator]
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static GLOBAL: Jemalloc = Jemalloc;
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lazy_static! {
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static ref TOKIO_RUNTIME: tokio::runtime::Runtime = tokio::runtime::Runtime::new().unwrap();
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}
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fn interpret(code: &str) {
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// TODO: this is a bit annoying.
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// It'd be nice if we could set this up once and then run evaluate() with a
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// piece of code. b/262
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let (blob_service, directory_service, path_info_service, nar_calculation_service) =
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TOKIO_RUNTIME
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.block_on(async { construct_services("memory://", "memory://", "memory://").await })
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.unwrap();
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// We assemble a complete store in memory.
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let tvix_store_io = Rc::new(TvixStoreIO::new(
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blob_service,
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directory_service,
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path_info_service.into(),
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nar_calculation_service.into(),
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Arc::<DummyBuildService>::default(),
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TOKIO_RUNTIME.handle().clone(),
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));
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let mut eval_builder = tvix_eval::Evaluation::builder(Box::new(TvixIO::new(
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tvix_store_io.clone() as Rc<dyn EvalIO>,
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)) as Box<dyn EvalIO>)
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.enable_import()
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.add_builtins(impure_builtins());
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eval_builder = add_derivation_builtins(eval_builder, Rc::clone(&tvix_store_io));
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eval_builder = add_fetcher_builtins(eval_builder, Rc::clone(&tvix_store_io));
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eval_builder = add_import_builtins(eval_builder, tvix_store_io);
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eval_builder = configure_nix_path(
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eval_builder,
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// The benchmark requires TVIX_BENCH_NIX_PATH to be set, so barf out
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// early, rather than benchmarking tvix returning an error.
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&Some(env::var("TVIX_BENCH_NIX_PATH").expect("TVIX_BENCH_NIX_PATH must be set")),
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);
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let eval = eval_builder.build();
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let result = eval.evaluate(code, None);
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assert!(result.errors.is_empty());
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}
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fn eval_nixpkgs(c: &mut Criterion) {
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c.bench_function("hello outpath", |b| {
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b.iter(|| {
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interpret(black_box("(import <nixpkgs> {}).hello.outPath"));
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})
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});
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}
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criterion_group!(
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name = benches;
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config = Criterion::default().measurement_time(Duration::from_secs(30)).sample_size(10);
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targets = eval_nixpkgs
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);
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criterion_main!(benches);
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