}

// startTheWorldGC undoes the effects of stopTheWorldGC.
//
// w must be the worldStop returned by stopTheWorld.
func startTheWorldGC(w worldStop) {
	startTheWorld(w)
	semrelease(&gcsema)
}

// Holding worldsema grants an M the right to try to stop the world.
var worldsema uint32 = 1

// Holding gcsema grants the M the right to block a GC, and blocks