remove accidental extra in previous patch

[ghc-hetmet.git] / ghc / includes / TSO.h

diff --git a/ghc/includes/TSO.h b/ghc/includes/TSO.h
index 8592cb8..82ecacb 100644 (file)
--- a/ghc/includes/TSO.h
+++ b/ghc/includes/TSO.h
@@ -1,5 +1,4 @@
 /* -----------------------------------------------------------------------------
- * $Id: TSO.h,v 1.37 2004/11/08 12:26:57 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -78,6 +77,22 @@ typedef StgTSOStatBuf StgTSOGranInfo;
  */
 typedef StgWord32 StgThreadID;
 
+/* 
+ * Flags for the tso->flags field.
+ *
+ * The TSO_DIRTY flag indicates that this TSO's stack should be
+ * scanned during garbage collection.  The link field of a TSO is
+ * always scanned, so we don't have to dirty a TSO just for linking
+ * it on a different list.
+ *
+ * TSO_DIRTY is set by 
+ *    - schedule(), just before running a thread,
+ *    - raiseAsync(), because it modifies a thread's stack
+ *    - resumeThread(), just before running the thread again
+ * and unset by the garbage collector (only).
+ */
+#define TSO_DIRTY   1
+
 /*
  * Type returned after running a thread.  Values of this type
  * include HeapOverflow, StackOverflow etc.  See Constants.h for the
@@ -85,8 +100,8 @@ typedef StgWord32 StgThreadID;
  */
 typedef unsigned int StgThreadReturnCode;
 
-#if defined(mingw32_TARGET_OS)
-/* results from an async I/O request + it's ID. */
+#if defined(mingw32_HOST_OS)
+/* results from an async I/O request + its request ID. */
 typedef struct {
   unsigned int reqID;
   int          len;
@@ -97,11 +112,11 @@ typedef struct {
 typedef union {
   StgClosure *closure;
   struct StgTSO_ *tso;
-  int fd;
-#if defined(mingw32_TARGET_OS)
-  StgAsyncIOResult* async_result;
+  StgInt fd;   /* StgInt instead of int, so that it's the same size as the ptrs */
+#if defined(mingw32_HOST_OS)
+  StgAsyncIOResult *async_result;
 #endif
-  unsigned int target;
+  StgWord target;
 } StgTSOBlockInfo;
 
 /*
@@ -118,27 +133,24 @@ typedef union {
  * field.
  */
 
-/* 
- * ToDo: make this structure sensible on a non-32-bit arch.
- */
-
 typedef struct StgTSO_ {
   StgHeader          header;
 
-  struct StgTSO_*    link;          // Links threads onto blocking queues */
-  StgMutClosure *    mut_link;      // TSO's are mutable of course! */
-  struct StgTSO_*    global_link;    // Links all threads together */
+  struct StgTSO_*    link;          /* Links threads onto blocking queues */
+  struct StgTSO_*    global_link;    /* Links all threads together */
   
-  StgWord16           what_next;  // Values defined in Constants.h
-  StgWord16           why_blocked;  // Values defined in Constants.h
+  StgWord16          what_next;      /* Values defined in Constants.h */
+  StgWord16          why_blocked;    /* Values defined in Constants.h */
+  StgWord32          flags;
   StgTSOBlockInfo    block_info;
   struct StgTSO_*    blocked_exceptions;
   StgThreadID        id;
   int                saved_errno;
-  struct StgMainThread_* main;
+  struct Task_*      bound;          // non-NULL for a bound thread
+  struct StgTRecHeader_ *trec;       /* STM transaction record */
   
 #ifdef TICKY_TICKY
-  // TICKY-specific stuff would go here.
+  /* TICKY-specific stuff would go here. */
 #endif
 #ifdef PROFILING
    StgTSOProfInfo prof;
@@ -183,6 +195,8 @@ typedef struct StgTSO_ {
         BlockedOnBlackHole     the BLACKHOLE_BQ     the BLACKHOLE_BQ's queue
        
         BlockedOnMVar          the MVAR             the MVAR's queue
+
+       BlockedOnSTM           END_TSO_QUEUE        STM wait queue(s)
        
         BlockedOnException     the TSO              TSO->blocked_exception
 
@@ -239,7 +253,11 @@ extern StgTSO dummy_tso;
 
 
 /* this is the NIL ptr for a TSO queue (e.g. runnable queue) */
+#if IN_STG_CODE
+#define END_TSO_QUEUE  (stg_END_TSO_QUEUE_closure)
+#else
 #define END_TSO_QUEUE  ((StgTSO *)(void*)&stg_END_TSO_QUEUE_closure)
+#endif
 
 #if defined(PAR) || defined(GRAN)
 /* this is the NIL ptr for a blocking queue */