bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Auto merge of #130803 - cuviper:file-buffered, r=joshtriplett

Browse source 
Add `File` constructors that return files wrapped with a buffer

In addition to the light convenience, these are intended to raise visibility that buffering is something you should consider when opening a file, since unbuffered I/O is a common performance footgun to Rust newcomers.

ACP: https://github.com/rust-lang/libs-team/issues/446
Tracking Issue: #130804
This commit is contained in:
bors 2024-09-25 04:57:12 +00:00
commit 4c62024cd5
33 changed files with 151 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

2
compiler/rustc_mir_transform/src/dump_mir.rs
View file

@ -24,7 +24,7 @@ pub fn emit_mir(tcx: TyCtxt<'_>) -> io::Result<()> {
write_mir_pretty(tcx, None, &mut f)?;
}
OutFileName::Real(path) => {
let mut f = io::BufWriter::new(File::create(&path)?);
let mut f = File::create_buffered(&path)?;
write_mir_pretty(tcx, None, &mut f)?;
if tcx.sess.opts.json_artifact_notifications {
tcx.dcx().emit_artifact_notification(&path, "mir");

1
compiler/rustc_mir_transform/src/lib.rs
View file

@ -3,6 +3,7 @@
#![feature(box_patterns)]
#![feature(const_type_name)]
#![feature(cow_is_borrowed)]
#![feature(file_buffered)]
#![feature(if_let_guard)]
#![feature(impl_trait_in_assoc_type)]
#![feature(let_chains)]