bjoernager/rust
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compiler/rustc_data_structures/src/sync.rs: delete MappedLockGuard

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It seems it is left-over after some refactoring
This commit is contained in:
Askar Safin 2025-02-11 08:14:00 +03:00
parent 25b6761c9e
commit c9c7b44510
2 changed files with 2 additions and 4 deletions
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5
compiler/rustc_data_structures/src/sync.rs
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@ -112,9 +112,8 @@ pub use std::sync::{OnceLock, Weak};
pub use mode::{is_dyn_thread_safe, set_dyn_thread_safe_mode}; pub use mode::{is_dyn_thread_safe, set_dyn_thread_safe_mode};
pub use parking_lot::{ pub use parking_lot::{
MappedMutexGuard as MappedLockGuard, MappedRwLockReadGuard as MappedReadGuard, MappedRwLockReadGuard as MappedReadGuard, MappedRwLockWriteGuard as MappedWriteGuard,
MappedRwLockWriteGuard as MappedWriteGuard, RwLockReadGuard as ReadGuard, RwLockReadGuard as ReadGuard, RwLockWriteGuard as WriteGuard,
RwLockWriteGuard as WriteGuard,
}; };
#[cfg(not(target_has_atomic = "64"))] #[cfg(not(target_has_atomic = "64"))]
pub use portable_atomic::AtomicU64; pub use portable_atomic::AtomicU64;

1
src/doc/rustc-dev-guide/src/parallel-rustc.md
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@ -58,7 +58,6 @@ are implemented differently depending on whether `parallel-compiler` is true.
| WriteGuard | parking_lot::RwLockWriteGuard | std::cell::RefMut | | WriteGuard | parking_lot::RwLockWriteGuard | std::cell::RefMut |
| MappedWriteGuard | parking_lot::MappedRwLockWriteGuard | std::cell::RefMut | | MappedWriteGuard | parking_lot::MappedRwLockWriteGuard | std::cell::RefMut |
| LockGuard | parking_lot::MutexGuard | std::cell::RefMut | | LockGuard | parking_lot::MutexGuard | std::cell::RefMut |
| MappedLockGuard | parking_lot::MappedMutexGuard | std::cell::RefMut |
- These thread-safe data structures are interspersed during compilation which - These thread-safe data structures are interspersed during compilation which
can cause lock contention resulting in degraded performance as the number of can cause lock contention resulting in degraded performance as the number of