Track external allocated memory for weak persistent handles.

runtime/vm/dart_api_impl.cc

Index: runtime/vm/dart_api_impl.cc
===================================================================
--- runtime/vm/dart_api_impl.cc	(revision 33235)
+++ runtime/vm/dart_api_impl.cc	(working copy)
@@ -617,6 +617,7 @@
     FinalizablePersistentHandles* handles,
     Dart_Handle object,
     void* peer,
+    intptr_t external_allocation_size,
     Dart_WeakPersistentHandleFinalizer callback) {
   ReusableObjectHandleScope reused_obj_handle(isolate);
   Object& ref = reused_obj_handle.Handle();
@@ -625,6 +626,8 @@
   finalizable_ref->set_raw(ref);
   finalizable_ref->set_peer(peer);
   finalizable_ref->set_callback(callback);
+  finalizable_ref->InitializeExternalAllocationSize(external_allocation_size,
+                                                    isolate->heap());
   return reinterpret_cast<Dart_WeakPersistentHandle>(finalizable_ref);
 }
 
@@ -632,6 +635,7 @@
 DART_EXPORT Dart_WeakPersistentHandle Dart_NewWeakPersistentHandle(
     Dart_Handle object,
     void* peer,
+    intptr_t external_allocation_size,
     Dart_WeakPersistentHandleFinalizer callback) {
   Isolate* isolate = Isolate::Current();
   CHECK_ISOLATE(isolate);
@@ -641,6 +645,7 @@
                                    &state->weak_persistent_handles(),
                                    object,
                                    peer,
+                                   external_allocation_size,
                                    callback);
 }
 
@@ -648,6 +653,7 @@
 DART_EXPORT Dart_WeakPersistentHandle Dart_NewPrologueWeakPersistentHandle(
     Dart_Handle object,
     void* peer,
+    intptr_t external_allocation_size,
     Dart_WeakPersistentHandleFinalizer callback) {
   Isolate* isolate = Isolate::Current();
   CHECK_ISOLATE(isolate);
@@ -657,6 +663,7 @@
                                    &state->prologue_weak_persistent_handles(),
                                    object,
                                    peer,
+                                   external_allocation_size,
                                    callback);
 }
 
@@ -1785,6 +1792,7 @@
     intptr_t length,
     void* peer,
     Dart_PeerFinalizer cback) {
+  // TODO(17284): Allocate large external data in old space.
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   if (latin1_array == NULL && length != 0) {
@@ -1801,6 +1809,7 @@
                                                     intptr_t length,
                                                     void* peer,
                                                     Dart_PeerFinalizer cback) {
+  // TODO(17284): Allocate large external data in old space.
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   if (utf16_array == NULL && length != 0) {
@@ -2742,6 +2751,7 @@
     Dart_TypedData_Type type,
     void* data,
     intptr_t length) {
+  // TODO(17284): Allocate large external data in old space.
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   if (data == NULL && length != 0) {