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//
// LockProtected.swift
// ReadWriteLock
//
// Created by John Gallagher on 7/17/14.
// Copyright (c) 2014 Big Nerd Ranch. All rights reserved.
//
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)
}
}
}