NSRecursiveLock Class Reference
| Inherits from | |
| Conforms to | |
| Framework | /System/Library/Frameworks/Foundation.framework |
| Availability | Available in iOS 2.0 and later. |
| Companion guide | |
| Declared in | NSLock.h |
Overview
NSRecursiveLock defines a lock that may be acquired multiple times by the same thread without causing a deadlock, a situation where a thread is permanently blocked waiting for itself to relinquish a lock. While the locking thread has one or more locks, all other threads are prevented from accessing the code protected by the lock.
Adopted Protocols
Instance Methods
lockBeforeDate:
Attempts to acquire a lock before a given date.
Parameters
- limit
The time before which the lock should be acquired.
Return Value
YES if the lock is acquired before limit, otherwise NO.
Discussion
The thread is blocked until the receiver acquires the lock or limit is reached.
Availability
- Available in iOS 2.0 and later.
Declared In
NSLock.hname
Returns the name associated with the receiver.
Return Value
The name of the receiver.
Availability
- Available in iOS 2.0 and later.
See Also
Declared In
NSLock.hsetName:
Assigns a name to the receiver
Parameters
- newName
The new name for the receiver. This method makes a copy of the specified string.
Discussion
You can use a name string to identify a lock within your code. Cocoa also uses this name as part of any error descriptions involving the receiver.
Availability
- Available in iOS 2.0 and later.
See Also
Declared In
NSLock.h© 2007 Apple Inc. All Rights Reserved. (Last updated: 2007-04-30)