Make allocatePinned use local storage, and other refactorings

This is a batch of refactoring to remove some of the GC's global
state, as we move towards CPU-local GC.  

  - allocateLocal() now allocates large objects into the local
    nursery, rather than taking a global lock and allocating
    then in gen 0 step 0.

  - allocatePinned() was still allocating from global storage and
    taking a lock each time, now it uses local storage. 
    (mallocForeignPtrBytes should be faster with -threaded).
    
  - We had a gen 0 step 0, distinct from the nurseries, which are
    stored in a separate nurseries[] array.  This is slightly strange.
    I removed the g0s0 global that pointed to gen 0 step 0, and
    removed all uses of it.  I think now we don't use gen 0 step 0 at
    all, except possibly when there is only one generation.  Possibly
    more tidying up is needed here.

  - I removed the global allocate() function, and renamed
    allocateLocal() to allocate().

  - the alloc_blocks global is gone.  MAYBE_GC() and
    doYouWantToGC() now check the local nursery only.

1 files changed, 10 insertions, 10 deletions

diff --git a/rts/Interpreter.c b/rts/Interpreter.c
index 339d4d8f88..5197510766 100644
--- a/rts/Interpreter.c
+++ b/rts/Interpreter.c
@@ -89,7 +89,7 @@
 STATIC_INLINE StgPtr
 allocate_NONUPD (Capability *cap, int n_words)
 {
-    return allocateLocal(cap, stg_max(sizeofW(StgHeader)+MIN_PAYLOAD_SIZE, n_words));
+    return allocate(cap, stg_max(sizeofW(StgHeader)+MIN_PAYLOAD_SIZE, n_words));
 }
 
 int rts_stop_next_breakpoint = 0;
@@ -604,7 +604,7 @@ do_apply:
 	    else /* arity > n */ {
 		// build a new PAP and return it.
 		StgPAP *new_pap;
-		new_pap = (StgPAP *)allocateLocal(cap, PAP_sizeW(pap->n_args + m));
+		new_pap = (StgPAP *)allocate(cap, PAP_sizeW(pap->n_args + m));
 		SET_HDR(new_pap,&stg_PAP_info,CCCS);
 		new_pap->arity = pap->arity - n;
 		new_pap->n_args = pap->n_args + m;
@@ -649,7 +649,7 @@ do_apply:
 		// build a PAP and return it.
 		StgPAP *pap;
 		nat i;
-		pap = (StgPAP *)allocateLocal(cap, PAP_sizeW(m));
+		pap = (StgPAP *)allocate(cap, PAP_sizeW(m));
 		SET_HDR(pap, &stg_PAP_info,CCCS);
 		pap->arity = arity - n;
 		pap->fun = obj;
@@ -718,7 +718,7 @@ do_apply:
 
 run_BCO_return:
     // Heap check
-    if (doYouWantToGC()) {
+    if (doYouWantToGC(cap)) {
 	Sp--; Sp[0] = (W_)&stg_enter_info;
 	RETURN_TO_SCHEDULER(ThreadInterpret, HeapOverflow);
     }
@@ -729,7 +729,7 @@ run_BCO_return:
     
 run_BCO_return_unboxed:
     // Heap check
-    if (doYouWantToGC()) {
+    if (doYouWantToGC(cap)) {
 	RETURN_TO_SCHEDULER(ThreadInterpret, HeapOverflow);
     }
     // Stack checks aren't necessary at return points, the stack use
@@ -747,7 +747,7 @@ run_BCO_fun:
 	);
 
     // Heap check
-    if (doYouWantToGC()) {
+    if (doYouWantToGC(cap)) {
 	Sp -= 2; 
 	Sp[1] = (W_)obj; 
 	Sp[0] = (W_)&stg_apply_interp_info; // placeholder, really
@@ -863,7 +863,7 @@ run_BCO:
                   // stg_apply_interp_info pointer and a pointer to
                   // the BCO
                   size_words = BCO_BITMAP_SIZE(obj) + 2;
-                  new_aps = (StgAP_STACK *) allocateLocal(cap, AP_STACK_sizeW(size_words));
+                  new_aps = (StgAP_STACK *) allocate(cap, AP_STACK_sizeW(size_words));
                   SET_HDR(new_aps,&stg_AP_STACK_info,CCS_SYSTEM); 
                   new_aps->size = size_words;
                   new_aps->fun = &stg_dummy_ret_closure; 
@@ -1082,7 +1082,7 @@ run_BCO:
 	case bci_ALLOC_AP: {
 	    StgAP* ap; 
 	    int n_payload = BCO_NEXT;
-	    ap = (StgAP*)allocateLocal(cap, AP_sizeW(n_payload));
+	    ap = (StgAP*)allocate(cap, AP_sizeW(n_payload));
 	    Sp[-1] = (W_)ap;
 	    ap->n_args = n_payload;
 	    SET_HDR(ap, &stg_AP_info, CCS_SYSTEM/*ToDo*/)
@@ -1093,7 +1093,7 @@ run_BCO:
 	case bci_ALLOC_AP_NOUPD: {
 	    StgAP* ap; 
 	    int n_payload = BCO_NEXT;
-	    ap = (StgAP*)allocateLocal(cap, AP_sizeW(n_payload));
+	    ap = (StgAP*)allocate(cap, AP_sizeW(n_payload));
 	    Sp[-1] = (W_)ap;
 	    ap->n_args = n_payload;
 	    SET_HDR(ap, &stg_AP_NOUPD_info, CCS_SYSTEM/*ToDo*/)
@@ -1105,7 +1105,7 @@ run_BCO:
 	    StgPAP* pap; 
 	    int arity = BCO_NEXT;
 	    int n_payload = BCO_NEXT;
-	    pap = (StgPAP*)allocateLocal(cap, PAP_sizeW(n_payload));
+	    pap = (StgPAP*)allocate(cap, PAP_sizeW(n_payload));
 	    Sp[-1] = (W_)pap;
 	    pap->n_args = n_payload;
 	    pap->arity = arity;