Gives the memory of the running fiber's stack that no frame uses any more back to the system: the pages below the current frames that earlier, deeper calls touched. Call it before a long wait (an idle connection) so those pages do not stay resident; it costs a system call, so not in a hot path. The stack's contents below the caller are lost, which nothing can rely on anyway. Does nothing outside a fiber or on a platform without a way to discard pages.
release_unused_stack :: ()Gives the memory of the running fiber's stack that no frame uses any more back to the system: the pages below the current frames that earlier, deeper calls touched. Call it before a long wait (an idle connection) so those pages do not stay resident; it costs a system call, so not in a hot path. The stack's contents below the caller are lost, which nothing can rely on anyway. Does nothing outside a fiber or on a platform without a way to discard pages.