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denoland-deno/cli/mainrt.rs
Matt Mastracci 3fd4b882a4
perf(cli): faster standalone executable determination (#22717)
This was showing up on the flamegraph.

```
14:54 $ hyperfine -S none --warmup 25 '/tmp/deno run /tmp/empty.js' 'target/release/deno run /tmp/empty.js'
Benchmark 1: /tmp/deno run /tmp/empty.js
  Time (mean ± σ):      17.2 ms ±   4.7 ms    [User: 11.2 ms, System: 4.0 ms]
  Range (min … max):    15.1 ms …  72.9 ms    172 runs
 
  Warning: Statistical outliers were detected. Consider re-running this benchmark on a quiet system without any interferences from other programs. It might help to use the '--warmup' or '--prepare' options.
 
Benchmark 2: target/release/deno run /tmp/empty.js
  Time (mean ± σ):      16.7 ms ±   1.1 ms    [User: 11.1 ms, System: 4.0 ms]
  Range (min … max):    15.0 ms …  20.1 ms    189 runs
 
Summary
  'target/release/deno run /tmp/empty.js' ran
    1.03 ± 0.29 times faster than '/tmp/deno run /tmp/empty.js'
✔ ~/Documents/github/deno/deno [faster_extract|…5⚑ 23] 
```
2024-03-05 15:14:49 -07:00

87 lines
2 KiB
Rust

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Allow unused code warnings because we share
// code between the two bin targets.
#![allow(dead_code)]
#![allow(unused_imports)]
mod standalone;
mod args;
mod auth_tokens;
mod cache;
mod emit;
mod errors;
mod file_fetcher;
mod http_util;
mod js;
mod node;
mod npm;
mod resolver;
mod util;
mod version;
mod worker;
use deno_core::error::generic_error;
use deno_core::error::AnyError;
use deno_core::error::JsError;
use deno_runtime::fmt_errors::format_js_error;
use deno_runtime::tokio_util::create_and_run_current_thread_with_maybe_metrics;
pub use deno_runtime::UNSTABLE_GRANULAR_FLAGS;
use deno_terminal::colors;
use std::env;
use std::env::current_exe;
use crate::args::Flags;
pub(crate) fn unstable_exit_cb(feature: &str, api_name: &str) {
eprintln!(
"Unstable API '{api_name}'. The `--unstable-{}` flag must be provided.",
feature
);
std::process::exit(70);
}
fn exit_with_message(message: &str, code: i32) -> ! {
eprintln!(
"{}: {}",
colors::red_bold("error"),
message.trim_start_matches("error: ")
);
std::process::exit(code);
}
fn unwrap_or_exit<T>(result: Result<T, AnyError>) -> T {
match result {
Ok(value) => value,
Err(error) => {
let mut error_string = format!("{error:?}");
if let Some(e) = error.downcast_ref::<JsError>() {
error_string = format_js_error(e);
}
exit_with_message(&error_string, 1);
}
}
}
fn main() {
let args: Vec<String> = env::args().collect();
let current_exe_path = current_exe().unwrap();
let standalone =
standalone::extract_standalone(&current_exe_path, args.clone());
let future = async move {
match standalone {
Ok(Some(future)) => {
let (metadata, eszip) = future.await?;
standalone::run(eszip, metadata).await
}
Ok(None) => Ok(()),
Err(err) => Err(err),
}
};
unwrap_or_exit(create_and_run_current_thread_with_maybe_metrics(future));
}