bjoernager/rust
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Auto merge of #109117 - oli-obk:locks, r=michaelwoerister

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Avoid a few locks

We can use atomics or datastructures tuned for specific access patterns instead of locks. This may be an improvement for parallel rustc, but it's mostly a cleanup making various datastructures only usable in the way they are used right now (append data, never mutate), instead of having a general purpose lock.
This commit is contained in:
bors 2023-04-05 10:38:02 +00:00
commit 383c1d729e
17 changed files with 137 additions and 47 deletions
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7
compiler/rustc_parse/src/parser/mod.rs
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@ -29,6 +29,7 @@ use rustc_ast::{Async, AttrArgs, AttrArgsEq, Expr, ExprKind, MacDelimiter, Mutab
use rustc_ast::{HasAttrs, HasTokens, Unsafe, Visibility, VisibilityKind};
use rustc_ast_pretty::pprust;
use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::sync::Ordering;
use rustc_errors::PResult;
use rustc_errors::{
Applicability, DiagnosticBuilder, ErrorGuaranteed, FatalError, IntoDiagnostic, MultiSpan,
@ -1540,8 +1541,10 @@ pub(crate) fn make_unclosed_delims_error(
}
pub fn emit_unclosed_delims(unclosed_delims: &mut Vec<UnmatchedDelim>, sess: &ParseSess) {
*sess.reached_eof.borrow_mut() |=
unclosed_delims.iter().any(|unmatched_delim| unmatched_delim.found_delim.is_none());
let _ = sess.reached_eof.fetch_or(
unclosed_delims.iter().any(|unmatched_delim| unmatched_delim.found_delim.is_none()),
Ordering::Relaxed,
);
for unmatched in unclosed_delims.drain(..) {
if let Some(mut e) = make_unclosed_delims_error(unmatched, sess) {
e.emit();