Add note about using cells in the locks on the 'unsupported' platform.

2024-11-24 07:44:10 +00:00 · 2020-10-13 15:29:38 +02:00 · 2020-10-13 15:29:38 +02:00 · b26aa5d973
commit b26aa5d973
parent f1c3edbfab
2 changed files with 2 additions and 0 deletions
--- a/library/std/src/sys/unsupported/mutex.rs
+++ b/library/std/src/sys/unsupported/mutex.rs
@ -1,6 +1,7 @@
 use crate::cell::Cell;

 pub struct Mutex {
+    // This platform has no threads, so we can use a Cell here.
    locked: Cell<bool>,
 }

--- a/library/std/src/sys/unsupported/rwlock.rs
+++ b/library/std/src/sys/unsupported/rwlock.rs
@ -1,6 +1,7 @@
 use crate::cell::Cell;

 pub struct RWLock {
+    // This platform has no threads, so we can use a Cell here.
    mode: Cell<isize>,
 }