X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fsm%2FGC.h;h=5a9cb98c48bf624fd98081bde961180d3fe527be;hb=27a28cf6bc2196ee1690ac1fcc4d4c59d9b0d50f;hp=03f527d0a54c3d07249bc1410131a2367065abc5;hpb=5af1615ff84f5ef7c0db4eff486ed55ee3e4c1c5;p=ghc-hetmet.git

diff --git a/rts/sm/GC.h b/rts/sm/GC.h
index 03f527d..5a9cb98 100644
--- a/rts/sm/GC.h
+++ b/rts/sm/GC.h
@@ -73,12 +73,11 @@
    ------------------------------------------------------------------------- */
 
 typedef struct step_workspace_ {
-    step * stp;			// the step for this workspace 
+    step * step;		// the step for this workspace 
     struct gc_thread_ * gct;    // the gc_thread that contains this workspace
 
     // block that is currently being scanned
     bdescr *     scan_bd;
-    StgPtr       scan;               // the scan pointer
 
     // where objects to be scavenged go
     bdescr *     todo_bd;
@@ -91,9 +90,13 @@ typedef struct step_workspace_ {
     // where large objects to be scavenged go
     bdescr *     todo_large_objects;
 
-    // Objects that need not be, or have already been, scavenged.
+    // Objects that have already been, scavenged.
     bdescr *     scavd_list;
-    lnat         n_scavd_blocks;     // count of blocks in this list
+    nat          n_scavd_blocks;     // count of blocks in this list
+
+    // Partially-full, scavenged, blocks
+    bdescr *     part_list;
+    unsigned int n_part_blocks;      // count of above
 
 } step_workspace;
 
@@ -116,12 +119,13 @@ typedef struct gc_thread_ {
 #endif
     nat thread_index;              // a zero based index identifying the thread
 
-    step_workspace ** steps;	   // 2-d array (gen,step) of workspaces
-
     bdescr * free_blocks;          // a buffer of free blocks for this thread
                                    //  during GC without accessing the block
                                    //   allocators spin lock. 
 
+    StgClosure* static_objects;      // live static objects
+    StgClosure* scavenged_static_objects;   // static objects scavenged so far
+
     lnat gc_count;                 // number of gc's this thread has done
 
     // --------------------
@@ -136,7 +140,7 @@ typedef struct gc_thread_ {
                                    // variable).
 
     rtsBool failed_to_evac;        // failure to evacuate an object typically 
-                                   // causes it to be recorded in the mutable 
+                                   // Causes it to be recorded in the mutable 
                                    // object list
 
     rtsBool eager_promotion;       // forces promotion to the evac gen
@@ -148,19 +152,34 @@ typedef struct gc_thread_ {
 #ifdef USE_PAPI
     int papi_events;
 #endif
-    
+
+    // -------------------
+    // stats
+
+    lnat copied;
+    lnat any_work;
+    lnat no_work;
+    lnat scav_find_work;
+
+    // -------------------
+    // workspaces
+
+    // array of workspaces, indexed by stp->abs_no.  This is placed
+    // directly at the end of the gc_thread structure so that we can get from
+    // the gc_thread pointer to a workspace using only pointer
+    // arithmetic, no memory access.  This happens in the inner loop
+    // of the GC, see Evac.c:alloc_for_copy().
+    step_workspace steps[];
 } gc_thread;
 
 extern nat N;
 extern rtsBool major_gc;
+extern nat n_gc_threads;
 
-extern gc_thread *gc_threads;
+extern gc_thread **gc_threads;
 register gc_thread *gct __asm__("%rbx");
 // extern gc_thread *gct;  // this thread's gct TODO: make thread-local
 
-extern StgClosure* static_objects;
-extern StgClosure* scavenged_static_objects;
-
 extern bdescr *mark_stack_bdescr;
 extern StgPtr *mark_stack;
 extern StgPtr *mark_sp;
@@ -172,14 +191,12 @@ extern StgPtr  oldgen_scan;
 
 extern long copied;
 
-#ifdef THREADED_RTS
-extern SpinLock static_objects_sync;
-#endif
-
 #ifdef DEBUG
 extern nat mutlist_MUTVARS, mutlist_MUTARRS, mutlist_MVARS, mutlist_OTHERS;
 #endif
 
 StgClosure * isAlive(StgClosure *p);
 
+#define WORK_UNIT_WORDS 128
+
 #endif /* GC_H */