Hey, is there a better way to create properties where getters and setters are protected using a lock...

# getting-started

[jschneider]

Hey, is there a better way to create properties where getters and setters are protected using a lock?

private val lock = ReentrantReadWriteLock()

fun getName(): String {
lock.readLock().lock()
try {
return name
} finally {
lock.readLock().unlock()
}
}

[diesieben07]

jschneider: First of all, your fun getName should really be a val name with a getter. And then check out the extension functions on ReentrantReadWriteLock that the standard library provides: http://kotlinlang.org/api/latest/jvm/stdlib/kotlin.concurrent/java.util.concurrent.locks.-reentrant-read-write-lock/index.html

[nkiesel]

so something like

import java.util.concurrent.locks.ReentrantReadWriteLock
import kotlin.concurrent.*

class K {
    private val lock = ReentrantReadWriteLock()
    var name = "initial"
        get() = lock.read { field }
        set(new) = lock.write { field = new }
}