Lock
Related Docs:
object Lock
| package util
TRUE if the lock is available
a future that completes once the lock is available AND task completes. The lock is locked while task is running and after task completes it is unlocked.
the count of callers waiting on the lock to become available
A trait for a non-blocking lock that ensures a synchronous execution schedule for all callers. A caller calls the lock method to execute a task synchronously once the lock is available. Simultaneous tasks are placed in a FIFO queue while awaiting execution.
Note1: Because Lock accepts a function to the task to run, it is not possible for callers to double lock, double release or forget to release the lock. Note2: Lock is NOT reentrant Note3: Lock should never be used when other locking options make more sense. Lock is designed for synchronizing many tasks (100+) and/or long running tasks (10ms+). Unlike other locking options, Lock does not block and consume a thread while waiting for the lock to become available. However, Lock is not the most performant option.