typedef struct step_ {
unsigned int no; // step number in this generation
unsigned int abs_no; // absolute step number
- int is_compacted; // compact this step? (old gen only)
struct generation_ * gen; // generation this step belongs to
unsigned int gen_no; // generation number (cached)
bdescr * large_objects; // large objects (doubly linked)
unsigned int n_large_blocks; // no. of blocks used by large objs
+ StgTSO * threads; // threads in this step
+ // linked via global_link
// ------------------------------------
// Fields below are used during GC only
// and scavenged_large_objects
#endif
+ int mark; // mark (not copy)? (old gen only)
+ int compact; // compact (not sweep)? (old gen only)
+
bdescr * old_blocks; // bdescr of first from-space block
unsigned int n_old_blocks; // number of blocks in from-space
+ unsigned int live_estimate; // for sweeping: estimate of live data
bdescr * todos; // blocks waiting to be scavenged
bdescr * todos_last;
bdescr * bitmap; // bitmap for compacting collection
+ StgTSO * old_threads;
} step;
-------------------------------------------------------------------------- */
-extern StgPtr allocate ( nat n );
-extern StgPtr allocateInGen ( generation *g, nat n );
-extern StgPtr allocateLocal ( Capability *cap, nat n );
-extern StgPtr allocatePinned ( nat n );
+extern StgPtr allocate ( lnat n );
+extern StgPtr allocateInGen ( generation *g, lnat n );
+extern StgPtr allocateLocal ( Capability *cap, lnat n );
+extern StgPtr allocatePinned ( lnat n );
extern lnat allocatedBytes ( void );
extern bdescr * RTS_VAR(small_alloc_list);
-------------------------------------------------------------------------- */
#define LOOKS_LIKE_INFO_PTR(p) \
- (p && LOOKS_LIKE_INFO_PTR_NOT_NULL(p))
+ (p && (IS_FORWARDING_PTR(p) || LOOKS_LIKE_INFO_PTR_NOT_NULL(p)))
#define LOOKS_LIKE_INFO_PTR_NOT_NULL(p) \
(((StgInfoTable *)(INFO_PTR_TO_STRUCT(p)))->type != INVALID_OBJECT && \
extern StgClosure * RTS_VAR(revertible_caf_list);
extern StgTSO * RTS_VAR(resurrected_threads);
+#define IS_FORWARDING_PTR(p) ((((StgWord)p) & 1) != 0)
+#define MK_FORWARDING_PTR(p) (((StgWord)p) | 1)
+#define UN_FORWARDING_PTR(p) (((StgWord)p) - 1)
+
#endif /* STORAGE_H */