Decode the Dart message into a Dart_CMessage structure before calling the native port callback

runtime/vm/zone.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ZONE_H_
 #define VM_ZONE_H_
 
 #include "platform/utils.h"
 #include "vm/allocation.h"
 #include "vm/handles.h"
@@ skipping 79 matching lines @@
   Segment* large_segments_;
 
   friend class Zone;
   friend class ApiZone;
   DISALLOW_COPY_AND_ASSIGN(BaseZone);
 };
 
 
 class Zone : public StackResource {
  public:
+  // Create an empty zone outside an isolate context.
+  explicit Zone();

[siva, 2012/02/04 01:55:43]

If you use ApiZone I guess these changes to Zone are not needed.

[Søren Gjesse, 2012/02/06 16:25:52]

See previous comments.

+
   // Create an empty zone and set is at the current zone for the Isolate.
   explicit Zone(Isolate* isolate);
 
   // Delete all memory associated with the zone.
   ~Zone();
 
   // Allocate 'size' bytes of memory in the zone; expands the zone by
   // allocating new segments of memory on demand using 'new'.
   uword Allocate(intptr_t size) { return zone_.Allocate(size); }
 
@@ skipping 17 matching lines @@
   void VisitObjectPointers(ObjectPointerVisitor* visitor);
 
  private:
   BaseZone zone_;
 
   // Structure for managing handles allocation.
   VMHandles handles_;
 
   // Used for chaining zones in order to allow unwinding of stacks.
   Zone* previous_;
-  DISALLOW_IMPLICIT_CONSTRUCTORS(Zone);
 };
 
 
 inline uword BaseZone::Allocate(intptr_t size) {
   ASSERT(size >= 0);
 
   // Round up the requested size to fit the alignment.
   size = Utils::RoundUp(size, kAlignment);
 
   // Check if the requested size is available without expanding.
   uword result;
   intptr_t free_size = (limit_ - position_);
   if (free_size >= size) {
     result = position_;
     position_ += size;
   } else {
     result = AllocateExpand(size);
   }
 
   // Check that the result has the proper alignment and return it.
   ASSERT(Utils::IsAligned(result, kAlignment));
   return result;
 }
 
 }  // namespace dart
 
 #endif  // VM_ZONE_H_