On 10/23/10 12:57 PM, Claude Heiland-Allen wrote:
On 23/10/10 17:42, Gregory Crosswhite wrote:
On 10/23/10 7:54 AM, John Lato wrote:
On Fri, Oct 22, 2010 at 6:16 PM, Bulat Ziganshin
This doesn't work, which was why the OP asked in the first place. When a thread calls an unsafe foreign function, it blocks everything until that function returns.
Is that true? The last time we discussed this in Haskell Cafe the conclusion I drew from the discussion was that unsafe foreign functions block the current thread but not any other thread.
The conclusion I drew was that "unsafe" foreign functions block the current "capability" (OS thread) and any "threads" (Haskell forkIO etc) currently scheduled on that capability, but other capabilities and threads continue executing as normal.
Yes, that is what I really meant to say; thank you for using the correct words. :-) Cheers, Greg