RET_N(r);
}
+threadStatuszh_fast
+{
+ /* args: R1 :: ThreadId# */
+ W_ tso;
+ W_ why_blocked;
+ W_ what_next;
+ W_ ret;
+
+ tso = R1;
+ loop:
+ if (TO_W_(StgTSO_what_next(tso)) == ThreadRelocated) {
+ tso = StgTSO__link(tso);
+ goto loop;
+ }
+
+ what_next = TO_W_(StgTSO_what_next(tso));
+ why_blocked = TO_W_(StgTSO_why_blocked(tso));
+ // Note: these two reads are not atomic, so they might end up
+ // being inconsistent. It doesn't matter, since we
+ // only return one or the other. If we wanted to return the
+ // contents of block_info too, then we'd have to do some synchronisation.
+
+ if (what_next == ThreadComplete) {
+ ret = 16; // NB. magic, matches up with GHC.Conc.threadStatus
+ } else {
+ if (what_next == ThreadKilled) {
+ ret = 17;
+ } else {
+ ret = why_blocked;
+ }
+ }
+ RET_N(ret);
+}
/* -----------------------------------------------------------------------------
* TVar primitives
/* actually perform the takeMVar */
tso = StgMVar_head(mvar);
- PerformTake(tso, R2);
+ PerformTake(tso, val);
if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) {
foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") [];
}
else
{
/* No further takes, the MVar is now full. */
- StgMVar_value(mvar) = R2;
+ StgMVar_value(mvar) = val;
#if defined(THREADED_RTS)
unlockClosure(mvar, stg_MVAR_DIRTY_info);