Crate async_lock

Async synchronization primitives.

This crate provides the following primitives:

• Barrier - enables tasks to synchronize all together at the same time.
• Mutex - a mutual exclusion lock.
• RwLock - a reader-writer lock, allowing any number of readers or a single writer.
• Semaphore - limits the number of concurrent operations.

Structs

• Barrier
  A counter to synchronize multiple tasks at the same time.
• BarrierWaitResult
  Returned by Barrier::wait() when all tasks have called it.
• Mutex
  An async mutex.
• MutexGuard
  A guard that releases the mutex when dropped.
• MutexGuardArc
  An owned guard that releases the mutex when dropped.
• OnceCell
  A memory location that can be written to at most once.
• RwLock
  An async reader-writer lock.
• RwLockReadGuard
  A guard that releases the read lock when dropped.
• RwLockUpgradableReadGuard
  A guard that releases the upgradable read lock when dropped.
• RwLockWriteGuard
  A guard that releases the write lock when dropped.
• Semaphore
  A counter for limiting the number of concurrent operations.
• SemaphoreGuard
  A guard that releases the acquired permit.
• SemaphoreGuardArc
  An owned guard that releases the acquired permit.