diff options
Diffstat (limited to 'library/std/src/sys/sync/mutex/futex.rs')
| -rw-r--r-- | library/std/src/sys/sync/mutex/futex.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/library/std/src/sys/sync/mutex/futex.rs b/library/std/src/sys/sync/mutex/futex.rs index 01e91a6294a..70e2ea9f605 100644 --- a/library/std/src/sys/sync/mutex/futex.rs +++ b/library/std/src/sys/sync/mutex/futex.rs @@ -19,12 +19,14 @@ impl Mutex { } #[inline] + // Make this a diagnostic item for Miri's concurrency model checker. #[cfg_attr(not(test), rustc_diagnostic_item = "sys_mutex_try_lock")] pub fn try_lock(&self) -> bool { self.futex.compare_exchange(UNLOCKED, LOCKED, Acquire, Relaxed).is_ok() } #[inline] + // Make this a diagnostic item for Miri's concurrency model checker. #[cfg_attr(not(test), rustc_diagnostic_item = "sys_mutex_lock")] pub fn lock(&self) { if self.futex.compare_exchange(UNLOCKED, LOCKED, Acquire, Relaxed).is_err() { @@ -82,6 +84,7 @@ impl Mutex { } #[inline] + // Make this a diagnostic item for Miri's concurrency model checker. #[cfg_attr(not(test), rustc_diagnostic_item = "sys_mutex_unlock")] pub unsafe fn unlock(&self) { if self.futex.swap(UNLOCKED, Release) == CONTENDED { |