[project @ 1999-11-09 15:46:49 by simonmar]
A slew of SMP-related changes. - New locking scheme for thunks: we now check whether the thunk being entered is in our private allocation area, and if so we don't lock it. Well, that's the upshot. In practice it's a lot more fiddly than that. - I/O blocking is handled a bit more sanely now (but still not properly, methinks) - deadlock detection is back - remove old pre-SMP scheduler code - revamp the timing code. We actually get reasonable-looking timing info for SMP programs now. - fix a bug in the garbage collector to do with IND_OLDGENs appearing on the mutable list of the old generation. - move BDescr() function from rts/BlockAlloc.h to includes/Block.h. - move struct generation and struct step into includes/StgStorage.h (sigh) - add UPD_IND_NOLOCK for updating with an indirection where locking the black hole is not required.
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