* screw us up if we don't check.
*/
if (upd->updatee != updatee && !closure_IND(upd->updatee)) {
- UPD_IND_NOLOCK(upd->updatee, updatee);
+ UPD_IND(upd->updatee, updatee);
}
// now mark this update frame as a stack gap. The gap
maybePerformBlockedException (cap, tso);
if (tso->what_next == ThreadKilled) { return; }
+ // NB. Blackholing is *not* optional, we must either do lazy
+ // blackholing, or eager blackholing consistently. See Note
+ // [upd-black-hole] in sm/Scav.c.
+
stack_end = &tso->stack[tso->stack_size];
frame = (StgClosure *)tso->sp;
}
if (bh->header.info != &stg_CAF_BLACKHOLE_info) {
-#if (!defined(LAZY_BLACKHOLING)) && defined(DEBUG)
- debugBelch("Unexpected lazy BHing required at 0x%04lx\n",(long)bh);
-#endif
// zero out the slop so that the sanity checker can tell
// where the next closure is.
DEBUG_FILL_SLOP(bh);
// We pretend that bh is now dead.
LDV_recordDead_FILL_SLOP_DYNAMIC((StgClosure *)bh);
#endif
-
+ // an EAGER_BLACKHOLE gets turned into a BLACKHOLE here.
#ifdef THREADED_RTS
cur_bh_info = (const StgInfoTable *)
cas((StgVolatilePtr)&bh->header.info,