Isolate/Thread split: Isolate -> Zone for LocationSummary.

runtime/vm/allocation.cc

 // 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.
 
 #include "vm/allocation.h"
 
 #include "platform/assert.h"
 #include "vm/isolate.h"
 #include "vm/zone.h"
 
 namespace dart {
 
-static void* Allocate(uword size, BaseIsolate* isolate) {
-  ASSERT(isolate != NULL);
-  ASSERT(isolate->current_zone() != NULL);
+static void* Allocate(uword size, Zone* zone) {
+  ASSERT(zone != NULL);
   if (size > static_cast<uword>(kIntptrMax)) {
     FATAL1("ZoneAllocated object has unexpectedly large size %" Pu "", size);
   }
-  return reinterpret_cast<void*>(isolate->current_zone()->AllocUnsafe(size));
+  return reinterpret_cast<void*>(zone->AllocUnsafe(size));
 }
 
 
 void* ZoneAllocated::operator new(uword size) {
-  return Allocate(size, Isolate::Current());
+  return Allocate(size, Isolate::Current()->current_zone());
 }
 
 
 void* ZoneAllocated::operator new(uword size, BaseIsolate* isolate) {
-  return Allocate(size, isolate);
+  ASSERT(isolate != NULL);
+  return Allocate(size, isolate->current_zone());
+}
+
+
+void* ZoneAllocated::operator new(uword size, Zone* zone) {
+  ASSERT(zone == Isolate::Current()->current_zone());
+  return Allocate(size, zone);
 }
 
 }  // namespace dart