Objectice-C @synchronized replacement for Swift

synchronized_swift

@inline(__always)
func synchronized<T>(_ lock: AnyObject, _ body: () throws -> T) rethrows -> T {
    objc_sync_enter(lock)
    defer { objc_sync_exit(lock) }
    return try body()
}

// example of usage
synchronized (self) {[weak self] in
    
    // code here
    // code here
}