[project @ 2006-01-17 16:13:18 by simonmar]

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

diff --git a/ghc/includes/Storage.h b/ghc/includes/Storage.h
index 98e536c..035088e 100644 (file)
--- a/ghc/includes/Storage.h
+++ b/ghc/includes/Storage.h
@@ -62,12 +62,18 @@ typedef struct step_ {
   unsigned int         n_large_blocks;  /* no. of blocks used by large objs */
   int                  is_compacted;   /* compact this step? (old gen only) */
 
+  /* During GC, if we are collecting this step, blocks and n_blocks
+   * are copied into the following two fields.  After GC, these blocks
+   * are freed. */
+  bdescr *     old_blocks;             /* bdescr of first from-space block */
+  unsigned int n_old_blocks;           /* number of blocks in from-space */
+
   /* temporary use during GC: */
   StgPtr       hp;                     /* next free locn in to-space */
   StgPtr       hpLim;                  /* end of current to-space block */
   bdescr *     hp_bd;                  /* bdescr of current to-space block */
-  bdescr *     to_blocks;              /* bdescr of first to-space block */
-  unsigned int n_to_blocks;            /* number of blocks in to-space */
+  StgPtr       scavd_hp;               /* ... same as above, but already */
+  StgPtr       scavd_hpLim;            /*     scavenged.  */
   bdescr *     scan_bd;                        /* block currently being scanned */
   StgPtr       scan;                   /* scan pointer in current block */
   bdescr *     new_large_objects;      /* large objects collected so far */
@@ -139,7 +145,7 @@ extern void exitStorage(void);
    -------------------------------------------------------------------------- */
 
 extern StgPtr  allocate        ( nat n );
-extern StgPtr  allocateLocal   ( StgRegTable *reg, nat n );
+extern StgPtr  allocateLocal   ( Capability *cap, nat n );
 extern StgPtr  allocatePinned  ( nat n );
 extern lnat    allocated_bytes ( void );
 
@@ -199,9 +205,11 @@ extern Mutex sm_mutex;
 #if defined(SMP)
 #define ACQUIRE_SM_LOCK   ACQUIRE_LOCK(&sm_mutex);
 #define RELEASE_SM_LOCK   RELEASE_LOCK(&sm_mutex);
+#define ASSERT_SM_LOCK()  ASSERT_LOCK_HELD(&sm_mutex);
 #else
 #define ACQUIRE_SM_LOCK
 #define RELEASE_SM_LOCK
+#define ASSERT_SM_LOCK()
 #endif
 
 INLINE_HEADER void
@@ -255,6 +263,15 @@ recordMutableLock(StgClosure *p)
 extern rtsBool keepCAFs;
 
 /* -----------------------------------------------------------------------------
+   This is the write barrier for MUT_VARs, a.k.a. IORefs.  A
+   MUT_VAR_CLEAN object is not on the mutable list; a MUT_VAR_DIRTY
+   is.  When written to, a MUT_VAR_CLEAN turns into a MUT_VAR_DIRTY
+   and is put on the mutable list.
+   -------------------------------------------------------------------------- */
+
+void dirty_MUT_VAR(StgClosure *p);
+
+/* -----------------------------------------------------------------------------
    DEBUGGING predicates for pointers
 
    LOOKS_LIKE_INFO_PTR(p)    returns False if p is definitely not an info ptr
@@ -384,7 +401,7 @@ extern lnat     countNurseryBlocks   ( void );
    Functions from GC.c 
    -------------------------------------------------------------------------- */
 
-extern void         threadPaused ( StgTSO * );
+extern void         threadPaused ( Capability *cap, StgTSO * );
 extern StgClosure * isAlive      ( StgClosure *p );
 extern void         markCAFs     ( evac_fn evac );
 
@@ -421,7 +438,6 @@ extern void newDynCAF(StgClosure *);
 extern void move_TSO(StgTSO *src, StgTSO *dest);
 extern StgTSO *relocate_stack(StgTSO *dest, ptrdiff_t diff);
 
-extern StgClosure * RTS_VAR(static_objects);
 extern StgClosure * RTS_VAR(scavenged_static_objects);
 extern StgWeak    * RTS_VAR(old_weak_ptr_list);
 extern StgWeak    * RTS_VAR(weak_ptr_list);