/* -----------------------------------------------------------------------------
*
- * (c) The GHC Team, 1998-2004
+ * (c) The GHC Team, 1998-2011
*
* Out-of-line primitive operations
*
import base_ControlziExceptionziBase_nestedAtomically_closure;
import EnterCriticalSection;
import LeaveCriticalSection;
-import ghczmprim_GHCziBool_False_closure;
+import ghczmprim_GHCziTypes_False_closure;
#if !defined(mingw32_HOST_OS)
import sm_mutex;
#endif
n = R1;
alignment = R2;
+ /* we always supply at least word-aligned memory, so there's no
+ need to allow extra space for alignment if the requirement is less
+ than a word. This also prevents mischief with alignment == 0. */
+ if (alignment <= SIZEOF_W) { alignment = 1; }
+
bytes = n;
/* payload_words is what we will tell the profiler we had to allocate */
}
}
+
/* -----------------------------------------------------------------------------
MutVar primitives
-------------------------------------------------------------------------- */
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;
- 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));
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);
}
/* -----------------------------------------------------------------------------
// Find the enclosing ATOMICALLY_FRAME or CATCH_RETRY_FRAME
retry_pop_stack:
- StgTSO_sp(CurrentTSO) = Sp;
- (frame_type) = foreign "C" findRetryFrameHelper(CurrentTSO "ptr") [];
- Sp = StgTSO_sp(CurrentTSO);
+ SAVE_THREAD_STATE();
+ (frame_type) = foreign "C" findRetryFrameHelper(MyCapability(), CurrentTSO "ptr") [];
+ LOAD_THREAD_STATE();
frame = Sp;
trec = StgTSO_trec(CurrentTSO);
outer = StgTRecHeader_enclosing_trec(trec);
}
-#define PerformTake(tso, value) \
- W_[StgTSO_sp(tso) + WDS(1)] = value; \
- W_[StgTSO_sp(tso) + WDS(0)] = stg_gc_unpt_r1_info;
+#define PerformTake(stack, value) \
+ W_ sp; \
+ sp = StgStack_sp(stack); \
+ W_[sp + WDS(1)] = value; \
+ W_[sp + WDS(0)] = stg_gc_unpt_r1_info;
-#define PerformPut(tso,lval) \
- StgTSO_sp(tso) = StgTSO_sp(tso) + WDS(3); \
- lval = W_[StgTSO_sp(tso) - WDS(1)];
+#define PerformPut(stack,lval) \
+ W_ sp; \
+ sp = StgStack_sp(stack) + WDS(3); \
+ StgStack_sp(stack) = sp; \
+ lval = W_[sp - WDS(1)];
stg_takeMVarzh
{
StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
}
-loop2:
- if (TO_W_(StgTSO_what_next(tso)) == ThreadRelocated) {
- tso = StgTSO__link(tso);
- goto loop2;
- }
-
ASSERT(StgTSO_why_blocked(tso) == BlockedOnMVar::I16);
ASSERT(StgTSO_block_info(tso) == mvar);
// actually perform the putMVar for the thread that we just woke up
- PerformPut(tso,StgMVar_value(mvar));
+ W_ stack;
+ stack = StgTSO_stackobj(tso);
+ PerformPut(stack, StgMVar_value(mvar));
// indicate that the MVar operation has now completed.
StgTSO__link(tso) = stg_END_TSO_QUEUE_closure;
// no need to mark the TSO dirty, we have only written END_TSO_QUEUE.
- foreign "C" tryWakeupThread_(MyCapability() "ptr", tso) [];
+ foreign "C" tryWakeupThread(MyCapability() "ptr", tso) [];
unlockClosure(mvar, stg_MVAR_DIRTY_info);
RET_P(val);
StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
}
-loop2:
- if (TO_W_(StgTSO_what_next(tso)) == ThreadRelocated) {
- tso = StgTSO__link(tso);
- goto loop2;
- }
-
ASSERT(StgTSO_why_blocked(tso) == BlockedOnMVar::I16);
ASSERT(StgTSO_block_info(tso) == mvar);
// actually perform the putMVar for the thread that we just woke up
- PerformPut(tso,StgMVar_value(mvar));
+ W_ stack;
+ stack = StgTSO_stackobj(tso);
+ PerformPut(stack, StgMVar_value(mvar));
// indicate that the MVar operation has now completed.
StgTSO__link(tso) = stg_END_TSO_QUEUE_closure;
// no need to mark the TSO dirty, we have only written END_TSO_QUEUE.
- foreign "C" tryWakeupThread_(MyCapability() "ptr", tso) [];
+ foreign "C" tryWakeupThread(MyCapability() "ptr", tso) [];
unlockClosure(mvar, stg_MVAR_DIRTY_info);
- RET_P(val);
+ RET_NP(1,val);
}
StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
}
-loop2:
- if (TO_W_(StgTSO_what_next(tso)) == ThreadRelocated) {
- tso = StgTSO__link(tso);
- goto loop2;
- }
-
ASSERT(StgTSO_why_blocked(tso) == BlockedOnMVar::I16);
ASSERT(StgTSO_block_info(tso) == mvar);
// actually perform the takeMVar
- PerformTake(tso, val);
+ W_ stack;
+ stack = StgTSO_stackobj(tso);
+ PerformTake(stack, val);
// indicate that the MVar operation has now completed.
StgTSO__link(tso) = stg_END_TSO_QUEUE_closure;
-
- if (TO_W_(StgTSO_dirty(tso)) == 0) {
- foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") [];
+
+ if (TO_W_(StgStack_dirty(stack)) == 0) {
+ foreign "C" dirty_STACK(MyCapability() "ptr", stack "ptr") [];
}
- foreign "C" tryWakeupThread_(MyCapability() "ptr", tso) [];
+ foreign "C" tryWakeupThread(MyCapability() "ptr", tso) [];
unlockClosure(mvar, stg_MVAR_DIRTY_info);
jump %ENTRY_CODE(Sp(0));
/* No further takes, the MVar is now full. */
StgMVar_value(mvar) = val;
unlockClosure(mvar, stg_MVAR_DIRTY_info);
- jump %ENTRY_CODE(Sp(0));
+ RET_N(1);
}
if (StgHeader_info(q) == stg_IND_info ||
StgHeader_info(q) == stg_MSG_NULL_info) {
StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
}
-loop2:
- if (TO_W_(StgTSO_what_next(tso)) == ThreadRelocated) {
- tso = StgTSO__link(tso);
- goto loop2;
- }
-
ASSERT(StgTSO_why_blocked(tso) == BlockedOnMVar::I16);
ASSERT(StgTSO_block_info(tso) == mvar);
// actually perform the takeMVar
- PerformTake(tso, val);
+ W_ stack;
+ stack = StgTSO_stackobj(tso);
+ PerformTake(stack, val);
// indicate that the MVar operation has now completed.
StgTSO__link(tso) = stg_END_TSO_QUEUE_closure;
- if (TO_W_(StgTSO_dirty(tso)) == 0) {
- foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") [];
+ if (TO_W_(StgStack_dirty(stack)) == 0) {
+ foreign "C" dirty_STACK(MyCapability() "ptr", stack "ptr") [];
}
- foreign "C" tryWakeupThread_(MyCapability() "ptr", tso) [];
+ foreign "C" tryWakeupThread(MyCapability() "ptr", tso) [];
unlockClosure(mvar, stg_MVAR_DIRTY_info);
- jump %ENTRY_CODE(Sp(0));
+ RET_N(1);
}
W_ spark;
#ifndef THREADED_RTS
- RET_NP(0,ghczmprim_GHCziBool_False_closure);
+ RET_NP(0,ghczmprim_GHCziTypes_False_closure);
#else
(spark) = foreign "C" findSpark(MyCapability());
if (spark != 0) {
RET_NP(1,spark);
} else {
- RET_NP(0,ghczmprim_GHCziBool_False_closure);
+ RET_NP(0,ghczmprim_GHCziTypes_False_closure);
}
#endif
}
+stg_numSparkszh
+{
+ W_ n;
+#ifdef THREADED_RTS
+ (n) = foreign "C" dequeElements(Capability_sparks(MyCapability()));
+#else
+ n = 0;
+#endif
+ RET_N(n);
+}
+
stg_traceEventzh
{
W_ msg;
// 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") [];
}
projects / ghc-hetmet.git / blobdiff