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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
import Foundation
public final class LockProtected<T> {
private var lock: ReadWriteLock
private var item: T
public convenience init(item: T) {
self.init(item: item, lock: CASSpinLock())
}
public init(item: T, lock: ReadWriteLock) {
self.item = item
self.lock = lock
}
public func withReadLock<U>(block: (T) -> U) -> U {
return lock.withReadLock { [unowned self] in
return block(self.item)
}
}
public func withWriteLock<U>(block: (inout T) -> U) -> U {
return lock.withWriteLock { [unowned self] in
return block(&self.item)
}
}
}