fix haddock submodule pointer

[ghc-hetmet.git] / rts / Sparks.h

diff --git a/rts/Sparks.h b/rts/Sparks.h
index 57c02e6..cffe99d 100644 (file)
--- a/rts/Sparks.h
+++ b/rts/Sparks.h
@@ -1,6 +1,6 @@
 /* -----------------------------------------------------------------------------
  *
- * (c) The GHC Team, 2000-2006
+ * (c) The GHC Team, 2000-2009
  *
  * Sparking support for GRAN, PAR and THREADED_RTS versions of the RTS.
  * 
@@ -9,93 +9,62 @@
 #ifndef SPARKS_H
 #define SPARKS_H
 
-#if defined(PARALLEL_HASKELL) || defined(THREADED_RTS)
-StgClosure * findSpark         (Capability *cap);
-void         initSparkPools    (void);
-void         freeSparkPool     (StgSparkPool *pool);
-void         createSparkThread (Capability *cap, StgClosure *p);
-void         markSparkQueue    (evac_fn evac, void *user, Capability *cap);
-
-INLINE_HEADER void     discardSparks  (StgSparkPool *pool);
-INLINE_HEADER nat      sparkPoolSize  (StgSparkPool *pool);
-INLINE_HEADER rtsBool  emptySparkPool (StgSparkPool *pool);
-
-INLINE_HEADER void     discardSparksCap  (Capability *cap);
-INLINE_HEADER nat      sparkPoolSizeCap  (Capability *cap);
-INLINE_HEADER rtsBool  emptySparkPoolCap (Capability *cap);
-#endif
-
-#if defined(PARALLEL_HASKELL)
-StgTSO      *activateSpark (rtsSpark spark) ;
-rtsBool      add_to_spark_queue( StgClosure *closure, StgSparkPool *pool );
-void         markSparkQueue( void );
-nat          spark_queue_len( StgSparkPool *pool );
-void         disposeSpark( StgClosure *spark );
-#endif
-
-#if defined(GRAN)
-void      findLocalSpark (rtsEvent *event, rtsBool *found_res, rtsSparkQ *spark_res);
-rtsBool   activateSpark (rtsEvent *event, rtsSparkQ spark);
-rtsSpark *newSpark(StgClosure *node, nat name, nat gran_info, 
-                  nat size_info, nat par_info, nat local);
-void      add_to_spark_queue(rtsSpark *spark);
-rtsSpark *delete_from_sparkq (rtsSpark *spark, PEs p, rtsBool dispose_too);
-void     disposeSpark(rtsSpark *spark);
-void     disposeSparkQ(rtsSparkQ spark);
-void     print_spark(rtsSpark *spark);
-void      print_sparkq(PEs proc);
-void     print_sparkq_stats(void);
-nat      spark_queue_len(PEs proc);
-void      markSparkQueue(void);
-#endif
+#include "WSDeque.h"
+
+#include "BeginPrivate.h"
+
+/* typedef for SparkPool in RtsTypes.h */
+
+#if defined(THREADED_RTS)
+
+typedef WSDeque SparkPool;
+
+// Initialisation
+void initSparkPools (void);
+
+// Take a spark from the "write" end of the pool.  Can be called
+// by the pool owner only.
+INLINE_HEADER StgClosure* reclaimSpark(SparkPool *pool);
+
+// Returns True if the spark pool is empty (can give a false positive
+// if the pool is almost empty).
+INLINE_HEADER rtsBool looksEmpty(SparkPool* deque);
+
+StgClosure * tryStealSpark     (Capability *cap);
+void         freeSparkPool     (SparkPool *pool);
+void         createSparkThread (Capability *cap);
+void         traverseSparkQueue(evac_fn evac, void *user, Capability *cap);
+void         pruneSparkQueue   (Capability *cap);
+
+INLINE_HEADER void discardSparks  (SparkPool *pool);
+INLINE_HEADER long sparkPoolSize  (SparkPool *pool);
 
 /* -----------------------------------------------------------------------------
  * PRIVATE below here
  * -------------------------------------------------------------------------- */
 
-#if defined(PARALLEL_HASKELL) || defined(THREADED_RTS)
-
-INLINE_HEADER rtsBool
-emptySparkPool (StgSparkPool *pool)
+INLINE_HEADER StgClosure* reclaimSpark(SparkPool *pool)
 {
-    return (pool->hd == pool->tl);
+    return popWSDeque(pool);
 }
 
-INLINE_HEADER rtsBool
-emptySparkPoolCap (Capability *cap) 
-{ return emptySparkPool(&cap->r.rSparks); }
-
-INLINE_HEADER nat
-sparkPoolSize (StgSparkPool *pool) 
+INLINE_HEADER rtsBool looksEmpty(SparkPool* deque)
 {
-    if (pool->hd <= pool->tl) {
-       return (pool->hd - pool->tl);
-    } else {
-       return (pool->lim - pool->hd + pool->tl - pool->base);
-    }
+    return looksEmptyWSDeque(deque);
 }
 
-INLINE_HEADER nat
-sparkPoolSizeCap (Capability *cap) 
-{ return sparkPoolSize(&cap->r.rSparks); }
+INLINE_HEADER long sparkPoolSize (SparkPool *pool) 
+{ 
+    return dequeElements(pool);
+}
 
-INLINE_HEADER void
-discardSparks (StgSparkPool *pool)
+INLINE_HEADER void discardSparks (SparkPool *pool)
 {
-    pool->hd = pool->tl;
+    discardElements(pool);
 }
 
-INLINE_HEADER void
-discardSparksCap (Capability *cap) 
-{ return discardSparks(&cap->r.rSparks); }
-
-
-#elif defined(THREADED_RTS) 
-
-INLINE_HEADER rtsBool
-emptySparkPoolCap (Capability *cap STG_UNUSED)
-{ return rtsTrue; }
+#endif // THREADED_RTS
 
-#endif
+#include "EndPrivate.h"
 
 #endif /* SPARKS_H */