On 11/04/2011 12:52 AM, Don Stewart wrote:
I'd like a proper FFI binding for getting at Stats.c dynamically. So I can write programs that determine their own stats about the GC and so on.
I have often wished that there was a much bigger API for interacting with the RTS. Currently, you can query how many capabilities there are, and you can request a (magor?) GC cycle. And that's *it*. One can imagine a far richer API, with the ability to do things like set and query RTS flags, query the GHC version number and RTS "way", ask how much RAM is allocated to what, request a minor or magor GC, try to release RAM to the OS, pre-allocate RAM from the OS because you're about to use it, find out how many threads are running or how many sparks are queued, and so on. Of course, I doubt anyone is going to implement it anytime soon...