Background finalization.

runtime/vm/heap.h

Index: runtime/vm/heap.h
diff --git a/runtime/vm/heap.h b/runtime/vm/heap.h
index 6131bf319bfc2d3fd048900c7c5bf52a75db3f6f..4b79801100e0aad4a9c8476e3a2d13118ee8a5ca 100644
--- a/runtime/vm/heap.h
+++ b/runtime/vm/heap.h
@@ -14,6 +14,7 @@
 #include "vm/spaces.h"
 #include "vm/verifier.h"
 #include "vm/weak_table.h"
+#include "vm/thread_pool.h"

[siva, 2016/06/02 20:18:05]

Why is thread_pool.h included here?

[rmacnak, 2016/06/03 01:08:31]

Leftover, removed.

 
 namespace dart {
 
@@ -24,6 +25,8 @@ class ObjectSet;
 class ServiceEvent;
 class TimelineEventScope;
 class VirtualMemory;
+class FinalizablePersistentHandle;

[siva, 2016/06/02 20:18:05]

Is this forward declaration necessary

+
 
 class Heap {
  public:
@@ -256,6 +259,10 @@ class Heap {
   Monitor* barrier() const { return barrier_; }
   Monitor* barrier_done() const { return barrier_done_; }
 
+  Monitor* finalization_tasks_lock() const { return finalization_tasks_lock_; }
+  intptr_t finalization_tasks() const { return finalization_tasks_; }
+  void set_finalization_tasks(intptr_t count) { finalization_tasks_ = count; }
+
   bool ShouldPretenure(intptr_t class_id) const;
 
   void SetupExternalPage(void* pointer, uword size, bool is_executable) {
@@ -353,6 +360,9 @@ class Heap {
   Monitor* barrier_;
   Monitor* barrier_done_;
 
+  Monitor* finalization_tasks_lock_;
+  intptr_t finalization_tasks_;
+
   // GC stats collection.
   GCStats stats_;