X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=rts%2FPrimOps.cmm;h=f2ce41551ad29ada1d30e518dc50bbdad0cc432e;hp=c7c372756ce721c6bbcac7a8453b7edc763871cd;hb=2378b2325df64a5ccc5b2e038ac3dbb848dea5f7;hpb=e9fdcd7b7d8ae466d83ce9f77f34e9b62b2a4fa7

diff --git a/rts/PrimOps.cmm b/rts/PrimOps.cmm
index c7c3727..f2ce415 100644
--- a/rts/PrimOps.cmm
+++ b/rts/PrimOps.cmm
@@ -49,7 +49,7 @@ import __gmpz_com;
 import pthread_mutex_lock;
 import pthread_mutex_unlock;
 #endif
-import base_GHCziIOBase_NestedAtomically_closure;
+import base_ControlziExceptionziBase_nestedAtomically_closure;
 import EnterCriticalSection;
 import LeaveCriticalSection;
 
@@ -1034,18 +1034,45 @@ isCurrentThreadBoundzh_fast
   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
  * -------------------------------------------------------------------------- */
 
-#ifdef REG_R1
 #define SP_OFF 0
-#define IF_NOT_REG_R1(x) 
-#else
-#define SP_OFF 1
-#define IF_NOT_REG_R1(x) x
-#endif
 
 // Catch retry frame ------------------------------------------------------------
 
@@ -1056,7 +1083,6 @@ INFO_TABLE_RET(stg_catch_retry_frame, CATCH_RETRY_FRAME,
   W_ unused3, "ptr" W_ unused4, "ptr" W_ unused5)
 {
    W_ r, frame, trec, outer;
-   IF_NOT_REG_R1(W_ rval;  rval = Sp(0);  Sp_adj(1); )
 
    frame = Sp;
    trec = StgTSO_trec(CurrentTSO);
@@ -1066,7 +1092,6 @@ INFO_TABLE_RET(stg_catch_retry_frame, CATCH_RETRY_FRAME,
      /* Succeeded (either first branch or second branch) */
      StgTSO_trec(CurrentTSO) = outer;
      Sp = Sp + SIZEOF_StgCatchRetryFrame;
-     IF_NOT_REG_R1(Sp_adj(-1); Sp(0) = rval;)
      jump %ENTRY_CODE(Sp(SP_OFF));
    } else {
      /* Did not commit: re-execute */
@@ -1092,7 +1117,6 @@ INFO_TABLE_RET(stg_atomically_frame, ATOMICALLY_FRAME,
   "ptr" W_ unused3, "ptr" W_ unused4)
 {
   W_ frame, trec, valid, next_invariant, q, outer;
-  IF_NOT_REG_R1(W_ rval;  rval = Sp(0);  Sp_adj(1); )
 
   frame = Sp;
   trec = StgTSO_trec(CurrentTSO);
@@ -1136,7 +1160,6 @@ INFO_TABLE_RET(stg_atomically_frame, ATOMICALLY_FRAME,
       /* Transaction was valid: commit succeeded */
       StgTSO_trec(CurrentTSO) = NO_TREC;
       Sp = Sp + SIZEOF_StgAtomicallyFrame;
-      IF_NOT_REG_R1(Sp_adj(-1); Sp(0) = rval;)
       jump %ENTRY_CODE(Sp(SP_OFF));
     } else {
       /* Transaction was not valid: try again */
@@ -1156,7 +1179,6 @@ INFO_TABLE_RET(stg_atomically_waiting_frame, ATOMICALLY_FRAME,
   "ptr" W_ unused3, "ptr" W_ unused4)
 {
   W_ frame, trec, valid;
-  IF_NOT_REG_R1(W_ rval;  rval = Sp(0);  Sp_adj(1); )
 
   frame = Sp;
 
@@ -1164,9 +1186,6 @@ INFO_TABLE_RET(stg_atomically_waiting_frame, ATOMICALLY_FRAME,
   (valid) = foreign "C" stmReWait(MyCapability() "ptr", CurrentTSO "ptr") [];
   if (valid != 0) {
     /* Previous attempt is still valid: no point trying again yet */
-	  IF_NOT_REG_R1(Sp_adj(-2);
-			Sp(1) = stg_NO_FINALIZER_closure;
-		  	Sp(0) = stg_ut_1_0_unreg_info;)
     jump stg_block_noregs;
   } else {
     /* Previous attempt is no longer valid: try again */
@@ -1180,11 +1199,7 @@ INFO_TABLE_RET(stg_atomically_waiting_frame, ATOMICALLY_FRAME,
 
 // STM catch frame --------------------------------------------------------------
 
-#ifdef REG_R1
 #define SP_OFF 0
-#else
-#define SP_OFF 1
-#endif
 
 /* Catch frames are very similar to update frames, but when entering
  * one we just pop the frame off the stack and perform the correct
@@ -1197,7 +1212,6 @@ INFO_TABLE_RET(stg_catch_stm_frame, CATCH_STM_FRAME,
 #endif
   "ptr" W_ unused3, "ptr" W_ unused4)
    {
-      IF_NOT_REG_R1(W_ rval;  rval = Sp(0);  Sp_adj(1); )
       W_ r, frame, trec, outer;
       frame = Sp;
       trec = StgTSO_trec(CurrentTSO);
@@ -1207,7 +1221,6 @@ INFO_TABLE_RET(stg_catch_stm_frame, CATCH_STM_FRAME,
         /* Commit succeeded */
         StgTSO_trec(CurrentTSO) = outer;
         Sp = Sp + SIZEOF_StgCatchSTMFrame;
-        IF_NOT_REG_R1(Sp_adj(-1); Sp(0) = rval;)
         jump Sp(SP_OFF);
       } else {
         /* Commit failed */
@@ -1238,7 +1251,7 @@ atomicallyzh_fast
 
   /* Nested transactions are not allowed; raise an exception */
   if (old_trec != NO_TREC) {
-     R1 = base_GHCziIOBase_NestedAtomically_closure;
+     R1 = base_ControlziExceptionziBase_nestedAtomically_closure;
      jump raisezh_fast;
   }
 
@@ -1379,9 +1392,6 @@ retry_pop_stack:
     StgHeader_info(frame) = stg_atomically_waiting_frame_info;
     Sp = frame;
     // Fix up the stack in the unregisterised case: the return convention is different.
-    IF_NOT_REG_R1(Sp_adj(-2); 
-		  Sp(1) = stg_NO_FINALIZER_closure;
-		  Sp(0) = stg_ut_1_0_unreg_info;)
     R3 = trec; // passing to stmWaitUnblock()
     jump stg_block_stmwait;
   } else {
@@ -1522,16 +1532,9 @@ newMVarzh_fast
 }
 
 
-/* If R1 isn't available, pass it on the stack */
-#ifdef REG_R1
 #define PerformTake(tso, value)				\
     W_[StgTSO_sp(tso) + WDS(1)] = value;		\
     W_[StgTSO_sp(tso) + WDS(0)] = stg_gc_unpt_r1_info;
-#else
-#define PerformTake(tso, value)					\
-    W_[StgTSO_sp(tso) + WDS(1)] = value;			\
-    W_[StgTSO_sp(tso) + WDS(0)] = stg_ut_1_0_unreg_info;
-#endif
 
 #define PerformPut(tso,lval)			\
     StgTSO_sp(tso) = StgTSO_sp(tso) + WDS(3);	\
@@ -1551,7 +1554,7 @@ takeMVarzh_fast
 #endif
         
     if (info == stg_MVAR_CLEAN_info) {
-        foreign "C" dirty_MVAR(BaseReg "ptr", mvar "ptr");
+        foreign "C" dirty_MVAR(BaseReg "ptr", mvar "ptr") [];
     }
 
     /* If the MVar is empty, put ourselves on its blocking queue,
@@ -1561,13 +1564,16 @@ takeMVarzh_fast
 	if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) {
 	    StgMVar_head(mvar) = CurrentTSO;
 	} else {
-	    StgTSO_link(StgMVar_tail(mvar)) = CurrentTSO;
+            foreign "C" setTSOLink(MyCapability() "ptr", 
+                                   StgMVar_tail(mvar) "ptr",
+                                   CurrentTSO) [];
 	}
-	StgTSO_link(CurrentTSO)        = stg_END_TSO_QUEUE_closure;
+	StgTSO__link(CurrentTSO)       = stg_END_TSO_QUEUE_closure;
 	StgTSO_why_blocked(CurrentTSO) = BlockedOnMVar::I16;
 	StgTSO_block_info(CurrentTSO)  = mvar;
 	StgMVar_tail(mvar) = CurrentTSO;
 	
+        R1 = mvar;
 	jump stg_block_takemvar;
   }
 
@@ -1584,17 +1590,14 @@ takeMVarzh_fast
       /* actually perform the putMVar for the thread that we just woke up */
       tso = StgMVar_head(mvar);
       PerformPut(tso,StgMVar_value(mvar));
-      dirtyTSO(tso);
 
-#if defined(GRAN) || defined(PAR)
-      /* ToDo: check 2nd arg (mvar) is right */
-      ("ptr" tso) = foreign "C" unblockOne(StgMVar_head(mvar),mvar) [];
-      StgMVar_head(mvar) = tso;
-#else
-      ("ptr" tso) = foreign "C" unblockOne(MyCapability() "ptr", 
-				         StgMVar_head(mvar) "ptr") [];
+      if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) {
+          foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") [];
+      }
+
+      ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", 
+                                            StgMVar_head(mvar) "ptr", 1) [];
       StgMVar_head(mvar) = tso;
-#endif
 
       if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) {
 	  StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
@@ -1664,17 +1667,13 @@ tryTakeMVarzh_fast
 	/* actually perform the putMVar for the thread that we just woke up */
 	tso = StgMVar_head(mvar);
 	PerformPut(tso,StgMVar_value(mvar));
-        dirtyTSO(tso);
+        if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) {
+            foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") [];
+        }
 
-#if defined(GRAN) || defined(PAR)
-	/* ToDo: check 2nd arg (mvar) is right */
-	("ptr" tso) = foreign "C" unblockOne(StgMVar_head(mvar) "ptr", mvar "ptr") [];
+        ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", 
+                                              StgMVar_head(mvar) "ptr", 1) [];
 	StgMVar_head(mvar) = tso;
-#else
-	("ptr" tso) = foreign "C" unblockOne(MyCapability() "ptr",
-					   StgMVar_head(mvar) "ptr") [];
-	StgMVar_head(mvar) = tso;
-#endif
 
 	if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) {
 	    StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
@@ -1702,13 +1701,14 @@ tryTakeMVarzh_fast
 
 putMVarzh_fast
 {
-    W_ mvar, info, tso;
+    W_ mvar, val, info, tso;
 
     /* args: R1 = MVar, R2 = value */
     mvar = R1;
+    val  = R2;
 
 #if defined(THREADED_RTS)
-    ("ptr" info) = foreign "C" lockClosure(mvar "ptr") [R2];
+    ("ptr" info) = foreign "C" lockClosure(mvar "ptr") [];
 #else
     info = GET_INFO(mvar);
 #endif
@@ -1721,13 +1721,17 @@ putMVarzh_fast
 	if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) {
 	    StgMVar_head(mvar) = CurrentTSO;
 	} else {
-	    StgTSO_link(StgMVar_tail(mvar)) = CurrentTSO;
+            foreign "C" setTSOLink(MyCapability() "ptr", 
+                                   StgMVar_tail(mvar) "ptr",
+                                   CurrentTSO) [];
 	}
-	StgTSO_link(CurrentTSO)        = stg_END_TSO_QUEUE_closure;
+	StgTSO__link(CurrentTSO)       = stg_END_TSO_QUEUE_closure;
 	StgTSO_why_blocked(CurrentTSO) = BlockedOnMVar::I16;
 	StgTSO_block_info(CurrentTSO)  = mvar;
 	StgMVar_tail(mvar) = CurrentTSO;
 	
+        R1 = mvar;
+        R2 = val;
 	jump stg_block_putmvar;
     }
   
@@ -1739,17 +1743,14 @@ putMVarzh_fast
 
 	/* actually perform the takeMVar */
 	tso = StgMVar_head(mvar);
-	PerformTake(tso, R2);
-        dirtyTSO(tso);
+	PerformTake(tso, val);
+        if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) {
+            foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") [];
+        }
       
-#if defined(GRAN) || defined(PAR)
-	/* ToDo: check 2nd arg (mvar) is right */
-	("ptr" tso) = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr",mvar "ptr") [];
-	StgMVar_head(mvar) = tso;
-#else
-	("ptr" tso) = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr") [];
+        ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", 
+                                              StgMVar_head(mvar) "ptr", 1) [];
 	StgMVar_head(mvar) = tso;
-#endif
 
 	if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) {
 	    StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
@@ -1765,7 +1766,7 @@ putMVarzh_fast
     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);
@@ -1812,16 +1813,13 @@ tryPutMVarzh_fast
 	/* actually perform the takeMVar */
 	tso = StgMVar_head(mvar);
 	PerformTake(tso, R2);
-        dirtyTSO(tso);
+        if (TO_W_(StgTSO_flags(tso)) & TSO_DIRTY == 0) {
+            foreign "C" dirty_TSO(MyCapability() "ptr", tso "ptr") [];
+        }
       
-#if defined(GRAN) || defined(PAR)
-	/* ToDo: check 2nd arg (mvar) is right */
-	("ptr" tso) = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr",mvar "ptr") [];
-	StgMVar_head(mvar) = tso;
-#else
-	("ptr" tso) = foreign "C" unblockOne(MyCapability() "ptr", StgMVar_head(mvar) "ptr") [];
+        ("ptr" tso) = foreign "C" unblockOne_(MyCapability() "ptr", 
+                                              StgMVar_head(mvar) "ptr", 1) [];
 	StgMVar_head(mvar) = tso;
-#endif
 
 	if (StgMVar_head(mvar) == stg_END_TSO_QUEUE_closure) {
 	    StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure;
@@ -2037,11 +2035,11 @@ for2:
  * macro in Schedule.h).
  */
 #define APPEND_TO_BLOCKED_QUEUE(tso)			\
-    ASSERT(StgTSO_link(tso) == END_TSO_QUEUE);		\
+    ASSERT(StgTSO__link(tso) == END_TSO_QUEUE);		\
     if (W_[blocked_queue_hd] == END_TSO_QUEUE) {	\
       W_[blocked_queue_hd] = tso;			\
     } else {						\
-      StgTSO_link(W_[blocked_queue_tl]) = tso;		\
+      foreign "C" setTSOLink(MyCapability() "ptr", W_[blocked_queue_tl] "ptr", tso) []; \
     }							\
     W_[blocked_queue_tl] = tso;
 
@@ -2137,15 +2135,15 @@ delayzh_fast
 while:
     if (t != END_TSO_QUEUE && StgTSO_block_info(t) < target) {
 	prev = t;
-	t = StgTSO_link(t);
+	t = StgTSO__link(t);
 	goto while;
     }
 
-    StgTSO_link(CurrentTSO) = t;
+    StgTSO__link(CurrentTSO) = t;
     if (prev == NULL) {
 	W_[sleeping_queue] = CurrentTSO;
     } else {
-	StgTSO_link(prev) = CurrentTSO;
+        foreign "C" setTSOLink(MyCapability() "ptr", prev "ptr", CurrentTSO) [];
     }
     jump stg_block_noregs;
 #endif