//
//  RWLock.swift
//  SwiftConcurrentCollections
//
//  Created by Pete Prokop on 09/02/2020.
//  Copyright © 2020 Pete Prokop. All rights reserved.
//

import Foundation

public final class RWLock {
    private var lock: pthread_rwlock_t

    // MARK: Lifecycle
    deinit {
        pthread_rwlock_destroy(&lock)
    }

    public init() {
        lock = pthread_rwlock_t()
        pthread_rwlock_init(&lock, nil)
    }

    // MARK: Public
    public func writeLock() {
        pthread_rwlock_wrlock(&lock)
    }

    public func readLock() {
        pthread_rwlock_rdlock(&lock)
    }

    public func unlock() {
        pthread_rwlock_unlock(&lock)
    }
}