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Allow limiting the number of threads running in parallel

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This commit is contained in:
Oli Scherer 2023-08-04 11:26:55 +00:00
parent 0d5f51c290
commit e706367941
1 changed files with 5 additions and 1 deletions
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6
src/tools/miri/tests/compiletest.rs
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@ -1,6 +1,7 @@
use colored::*;
use regex::bytes::Regex;
use std::ffi::OsString;
use std::num::NonZeroUsize;
use std::path::{Path, PathBuf};
use std::{env, process::Command};
use ui_test::{color_eyre::Result, Config, Match, Mode, OutputConflictHandling};
@ -128,7 +129,10 @@ fn run_tests(mode: Mode, path: &str, target: &str, with_dependencies: bool) -> R
eprintln!(" Compiler: {}", config.program.display());
ui_test::run_tests_generic(
vec![config],
std::thread::available_parallelism().unwrap(),
std::env::var("MIRI_TEST_THREADS").map_or_else(
|_| std::thread::available_parallelism().unwrap(),
|threads| NonZeroUsize::new(threads.parse().unwrap()).unwrap(),
),
args,
// The files we're actually interested in (all `.rs` files).
ui_test::default_file_filter,