abcff71bec
By avoiding some redundant rustc calls and stripping debuginfo for
wrappers. ./y.rs build --sysroot none now runs 44% faster.
Benchmark 1: ./y_before.bin build --sysroot none
Time (mean ± σ): 2.200 s ± 0.038 s [User: 2.140 s, System: 0.653 s]
Range (min … max): 2.171 s … 2.303 s 10 runs
Benchmark 2: ./y_after.bin build --sysroot none
Time (mean ± σ): 1.528 s ± 0.020 s [User: 1.388 s, System: 0.490 s]
Range (min … max): 1.508 s … 1.580 s 10 runs
Summary
'./y_after.bin build --sysroot none' ran
1.44 ± 0.03 times faster than './y_before.bin build --sysroot none'
96 lines
2.7 KiB
Rust
96 lines
2.7 KiB
Rust
use std::path::{Path, PathBuf};
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use std::process::{Command, Stdio};
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pub(crate) fn get_rustc_version(rustc: &Path) -> String {
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let version_info =
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Command::new(rustc).stderr(Stdio::inherit()).args(&["-V"]).output().unwrap().stdout;
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String::from_utf8(version_info).unwrap()
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}
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pub(crate) fn get_host_triple() -> String {
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let version_info =
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Command::new("rustc").stderr(Stdio::inherit()).args(&["-vV"]).output().unwrap().stdout;
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String::from_utf8(version_info)
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.unwrap()
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.lines()
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.to_owned()
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.find(|line| line.starts_with("host"))
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.unwrap()
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.split(":")
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.nth(1)
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.unwrap()
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.trim()
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.to_owned()
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}
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pub(crate) fn get_toolchain_name() -> String {
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let active_toolchain = Command::new("rustup")
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.stderr(Stdio::inherit())
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.args(&["show", "active-toolchain"])
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.output()
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.unwrap()
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.stdout;
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String::from_utf8(active_toolchain).unwrap().trim().split_once(' ').unwrap().0.to_owned()
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}
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pub(crate) fn get_cargo_path() -> PathBuf {
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let cargo_path = Command::new("rustup")
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.stderr(Stdio::inherit())
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.args(&["which", "cargo"])
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.output()
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.unwrap()
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.stdout;
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Path::new(String::from_utf8(cargo_path).unwrap().trim()).to_owned()
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}
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pub(crate) fn get_rustc_path() -> PathBuf {
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let rustc_path = Command::new("rustup")
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.stderr(Stdio::inherit())
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.args(&["which", "rustc"])
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.output()
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.unwrap()
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.stdout;
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Path::new(String::from_utf8(rustc_path).unwrap().trim()).to_owned()
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}
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pub(crate) fn get_rustdoc_path() -> PathBuf {
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let rustc_path = Command::new("rustup")
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.stderr(Stdio::inherit())
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.args(&["which", "rustdoc"])
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.output()
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.unwrap()
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.stdout;
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Path::new(String::from_utf8(rustc_path).unwrap().trim()).to_owned()
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}
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pub(crate) fn get_default_sysroot(rustc: &Path) -> PathBuf {
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let default_sysroot = Command::new(rustc)
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.stderr(Stdio::inherit())
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.args(&["--print", "sysroot"])
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.output()
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.unwrap()
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.stdout;
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Path::new(String::from_utf8(default_sysroot).unwrap().trim()).to_owned()
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}
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pub(crate) fn get_file_name(crate_name: &str, crate_type: &str) -> String {
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let file_name = Command::new("rustc")
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.stderr(Stdio::inherit())
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.args(&[
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"--crate-name",
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crate_name,
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"--crate-type",
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crate_type,
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"--print",
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"file-names",
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"-",
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])
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.output()
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.unwrap()
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.stdout;
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let file_name = String::from_utf8(file_name).unwrap().trim().to_owned();
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assert!(!file_name.contains('\n'));
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assert!(file_name.contains(crate_name));
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file_name
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}
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