/* -----------------------------------------------------------------------------
*
- * (c) The GHC Team, 1998-2004
+ * (c) The GHC Team, 1998-2011
*
* Out-of-line primitive operations
*
RET_P(mv);
}
+stg_casMutVarzh
+ /* MutVar# s a -> a -> a -> State# s -> (# State#, Int#, a #) */
+{
+ W_ mv, old, new, h;
+
+ mv = R1;
+ old = R2;
+ new = R3;
+
+ (h) = foreign "C" cas(mv + SIZEOF_StgHeader + OFFSET_StgMutVar_var,
+ old, new) [];
+ if (h != old) {
+ RET_NP(1,h);
+ } else {
+ RET_NP(0,h);
+ }
+}
+
+
stg_atomicModifyMutVarzh
{
W_ mv, f, z, x, y, r, h;
W_ tso;
W_ why_blocked;
W_ what_next;
- W_ ret;
+ W_ ret, cap, locked;
tso = R1;
ret = why_blocked;
}
}
- RET_N(ret);
+
+ cap = TO_W_(Capability_no(StgTSO_cap(tso)));
+
+ if ((TO_W_(StgTSO_flags(tso)) & TSO_LOCKED) != 0) {
+ locked = 1;
+ } else {
+ locked = 0;
+ }
+
+ RET_NNN(ret,cap,locked);
}
/* -----------------------------------------------------------------------------
// We should go through the macro HASKELLEVENT_USER_MSG_ENABLED from
// RtsProbes.h, but that header file includes unistd.h, which doesn't
// work in Cmm
+#if !defined(solaris2_TARGET_OS)
(enabled) = foreign "C" __dtrace_isenabled$HaskellEvent$user__msg$v1() [];
+#else
+ // Solaris' DTrace can't handle the
+ // __dtrace_isenabled$HaskellEvent$user__msg$v1
+ // call above. This call is just for testing whether the user__msg
+ // probe is enabled, and is here for just performance optimization.
+ // Since preparation for the probe is not that complex I disable usage of
+ // this test above for Solaris and enable the probe usage manually
+ // here. Please note that this does not mean that the probe will be
+ // used during the runtime! You still need to enable it by consumption
+ // in your dtrace script as you do with any other probe.
+ enabled = 1;
+#endif
if (enabled != 0) {
foreign "C" dtraceUserMsgWrapper(MyCapability() "ptr", msg "ptr") [];
}