gc.c: define objspace functions always

* gc.c (rb_objspace_alloc, rb_objspace_free): define always
  regardless ENABLE_VM_OBJSPACE, and free heap pages.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51867 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Sep 15 19:38:55 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* gc.c (rb_objspace_alloc, rb_objspace_free): define always
+	  regardless ENABLE_VM_OBJSPACE, and free heap pages.
+
 Tue Sep 15 15:15:41 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* win32/win32.c (rb_w32_sysinit, rb_w32_readdir): compare by

gc.c

@@ -1256,11 +1256,14 @@ RVALUE_WHITE_P(VALUE obj)
   --------------------------- ObjectSpace -----------------------------
 */
 
-#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
 rb_objspace_t *
 rb_objspace_alloc(void)
 {
+#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
     rb_objspace_t *objspace = calloc(1, sizeof(rb_objspace_t));
+#else
+    rb_objspace_t *objspace = &rb_objspace;
+#endif
     malloc_limit = gc_params.malloc_limit_min;
 
     return objspace;
@@ -1303,9 +1306,11 @@ rb_objspace_free(rb_objspace_t *objspace)
 	objspace->eden_heap.pages = NULL;
     }
     free_stack_chunks(&objspace->mark_stack);
+#if !(defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE)
+    if (objspace == &rb_objspace) return;
+#endif
     free(objspace);
 }
-#endif
 
 static void
 heap_pages_expand_sorted(rb_objspace_t *objspace)
@@ -3662,7 +3667,6 @@ pop_mark_stack_chunk(mark_stack_t *stack)
     stack->index = stack->limit;
 }
 
-#if (defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE) || (RGENGC_CHECK_MODE >= 4)
 static void
 free_stack_chunks(mark_stack_t *stack)
 {
@@ -3675,7 +3679,6 @@ free_stack_chunks(mark_stack_t *stack)
         chunk = next;
     }
 }
-#endif
 
 static void
 push_mark_stack(mark_stack_t *stack, VALUE data)

vm.c

@@ -1861,9 +1861,7 @@ ruby_vm_destruct(rb_vm_t *vm)
 
     if (vm) {
 	rb_thread_t *th = vm->main_thread;
-#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
 	struct rb_objspace *objspace = vm->objspace;
-#endif
 	vm->main_thread = 0;
 	if (th) {
 	    rb_fiber_reset_root_local_storage(th->self);
@@ -1872,11 +1870,9 @@ ruby_vm_destruct(rb_vm_t *vm)
 	rb_vm_living_threads_init(vm);
 	ruby_vm_run_at_exit_hooks(vm);
 	rb_vm_gvl_destroy(vm);
-#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
 	if (objspace) {
 	    rb_objspace_free(objspace);
 	}
-#endif
 	/* after freeing objspace, you *can't* use ruby_xfree() */
 	ruby_mimfree(vm);
 	ruby_current_vm = 0;
@@ -2800,9 +2796,7 @@ Init_BareVM(void)
     rb_thread_set_current_raw(th);
 
     vm_init2(vm);
-#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
     vm->objspace = rb_objspace_alloc();
-#endif
     ruby_current_vm = vm;
 
     Init_native_thread();