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Add TracingRwLockUpgradableReadGuard wrapper for parking_lot

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Benjamin Lerman
2022-05-02 14:14:35 +02:00
parent 4faaae8d8f
commit 743cc83669
1 changed files with 18 additions and 0 deletions
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18
src/parkinglot.rs
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@@ -130,6 +130,9 @@ pub type DebugMappedReentrantMutexGuard<'a, T> =
pub type TracingRwLock<T> = lock_api::RwLock<TracingRawRwLock, T>; pub type TracingRwLock<T> = lock_api::RwLock<TracingRawRwLock, T>;
/// Read guard for [`TracingRwLock`]. /// Read guard for [`TracingRwLock`].
pub type TracingRwLockReadGuard<'a, T> = lock_api::RwLockReadGuard<'a, TracingRawRwLock, T>; pub type TracingRwLockReadGuard<'a, T> = lock_api::RwLockReadGuard<'a, TracingRawRwLock, T>;
/// Upgradable Read guard for [`TracingRwLock`].
pub type TracingRwLockUpgradableReadGuard<'a, T> =
lock_api::RwLockUpgradableReadGuard<'a, TracingRawRwLock, T>;
/// Write guard for [`TracingRwLock`]. /// Write guard for [`TracingRwLock`].
pub type TracingRwLockWriteGuard<'a, T> = lock_api::RwLockWriteGuard<'a, TracingRawRwLock, T>; pub type TracingRwLockWriteGuard<'a, T> = lock_api::RwLockWriteGuard<'a, TracingRawRwLock, T>;
/// RAII guard for `TracingRwLockReadGuard::map`. /// RAII guard for `TracingRwLockReadGuard::map`.
@@ -146,6 +149,9 @@ pub type TracingMappedRwLockWriteGuard<'a, T> =
pub type DebugRwLock<T> = lock_api::RwLock<DebugRawRwLock, T>; pub type DebugRwLock<T> = lock_api::RwLock<DebugRawRwLock, T>;
/// Read guard for [`TracingRwLock`]. /// Read guard for [`TracingRwLock`].
pub type DebugRwLockReadGuard<'a, T> = lock_api::RwLockReadGuard<'a, DebugRawRwLock, T>; pub type DebugRwLockReadGuard<'a, T> = lock_api::RwLockReadGuard<'a, DebugRawRwLock, T>;
/// Upgradable Read guard for [`TracingRwLock`].
pub type DebugRwLockUpgradableReadGuard<'a, T> =
lock_api::RwLockUpgradableReadGuard<'a, DebugRawRwLock, T>;
/// Write guard for [`TracingRwLock`]. /// Write guard for [`TracingRwLock`].
pub type DebugRwLockWriteGuard<'a, T> = lock_api::RwLockWriteGuard<'a, DebugRawRwLock, T>; pub type DebugRwLockWriteGuard<'a, T> = lock_api::RwLockWriteGuard<'a, DebugRawRwLock, T>;
/// RAII guard for `DebugRwLockReadGuard::map`. /// RAII guard for `DebugRwLockReadGuard::map`.
@@ -256,6 +262,18 @@ mod tests {
.unwrap(); .unwrap();
} }
#[test]
fn test_rwlock_upgradable_read_usage() {
let lock = Arc::new(TracingRwLock::new(()));
// Should be able to acquire an upgradable read lock.
let upgradable_guard: TracingRwLockUpgradableReadGuard<'_, _> = lock.upgradable_read();
// Should be able to upgrade the guard.
let _write_guard: TracingRwLockWriteGuard<'_, _> =
TracingRwLockUpgradableReadGuard::upgrade(upgradable_guard);
}
#[test] #[test]
fn test_once_usage() { fn test_once_usage() {
let once = Arc::new(TracingOnce::new()); let once = Arc::new(TracingOnce::new());