CODEWITHSUNDEEP
iosobjective-c
user3344003
user3344003

Reputation: 21607

IOS Synchronization Technique

For a class object, I have a need for a locking mechanism that I can use for read and write methods.

I would like to be able permit multiple readers or a single writer. The same lock would apply to all class methods (one lock per object).

At the same time I would like WRITE to have priority over READ. If a writer queues, all new readers should be blocked until the writer gets and releases the lock.

Is there some built-in functionality to implement such a lock?

Upvotes: 1

Views: 138

Answers (1)

Schwarz Software
Schwarz Software

Reputation: 1552

You want "Thread Safety" and "read-write" locks are exactly what you are after. Look for "read-write lock" on this page of the Apple documentation: Synchronisation tools

Implementation details are here and will vary depending on what you are doing with your class - see Using Locks.

Upvotes: 1

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