sure, a work stealing runtime presents a problem where you wouldn’t use TLS but instead use whatever TLS equivalent is appropriate as TLS+work stealing is a bad idea generally anyway. You want to use fiber-local storage eg dispatch_queue_set_specific for libdispatch, whatever mechanism is available for goroutine-local like Context or sync.Map according to ChatGPT). Btw, if you don’t use goroutines then this problem doesn’t come up I believe as that’s the only situation this comes up in. And since Rand is part of the stdlib, I’m sure they could leverage lower level hooks to accomplish fiber-local storage in an efficient manner.
