Hello, could someone tell me what is the difference between these two ways of synchronization and wh...

# announcements

[Marcin Wisniowski]

Hello, could someone tell me what is the difference between these two ways of synchronization and why would I use one over the other? I noticed it's impossible to call suspending functions inside a synchronized block but it's fine with the other way, why is that?

-.kt

[hudsonb]

They aren't the same, the first locks by calling lock() and unlock() on lock. The second holds a monitor on the lock object.

[Marcin Wisniowski]

So what is the functional difference? Both seem to achieve the same thing?

[ghedeon]

same functionality. From documentation: Memory semantic of the Mutex is similar to synchronized block on JVM

[Marcin Wisniowski]

Thank you. But then why suspending function cannot be called inside a synchronized block and can inside a withLock?

[ghedeon]

Because Mutex.withLock() is suspend itself

[Marcin Wisniowski]

Mystery solved. Thank you.