shithub: mc

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Clean up the mutex code a bit more.

--- a/lib/thread/mutex+futex.myr

+++ b/lib/thread/mutex+futex.myr

@@ -67,13 +67,9 @@

 	are uncontended by the xchg() call, then it's safe to simply return;

 	nobody was waiting for us.

 	*/

-	if xcas(&mtx._state, Locked, Unlocked) == Locked

-		-> void

+	if xchg(&mtx._state, Unlocked) == Contended

+		ftxwake(&mtx._state)

 	;;

-

-	/* Contended case: set the state to unlocked and wake one thread */

-	mtx._state = Unlocked

-	ftxwake(&mtx._state)

 }

 const mtxcontended = {mtx