lock()

Declaration

func lock()

Discussion

This method blocks a thread’s execution until the lock can be acquired. An application protects a critical section of code by requiring a thread to acquire a lock before executing the code. Once the critical section is past, the thread relinquishes the lock by invoking unlock.

See Also

Deprecated instance methods

• addPersistentStore(ofType:configurationName:at:options:)
• destroyPersistentStore(at:ofType:options:)
• importStore(withIdentifier:fromExternalRecordsDirectoryAt:to:options:ofType:)
• migratePersistentStore(_:to:options:withType:)
• replacePersistentStore(at:destinationOptions:withPersistentStoreFrom:sourceOptions:ofType:)
• tryLock()
• unlock()
• perform(_:)
• performAndWait(_:)