Synchronization in Swift
Swift has no synchornozation functionality in the language, but Foundation framework is available to synchronize the code.
Use of dispatch_sync()
class Foo {
var value = 0
let sync = dispatch_queue_create("\(self.dynamicType).sync", DISPATCH_QUEUE_SERIAL)
func incrementWithSerialQueue() {
dispatch_sync(sync) {
self.value += 1
}
}
Use of objc_sync_enter() and objc_sync_exit()
class AutoSync {
let object : AnyObject
init(_ obj : AnyObject) {
object = obj
objc_sync_enter(object)
}
deinit {
objc_sync_exit(object)
}
}
class Foo {
var value = 0
func incrementWithObjcSync() {
let lock = AutoSync(self)
self.value += 1
}
}