Give isolates names to be used during debugging.

runtime/vm/dart.cc

 // Copyright (c) 2011, 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/dart.h"
 
 #include "vm/code_index_table.h"
 #include "vm/flags.h"
 #include "vm/freelist.h"
 #include "vm/handles.h"
@@ skipping 21 matching lines @@
   }
   OS::InitOnce();
   VirtualMemory::InitOnce();
   Isolate::InitOnce();
   PortMap::InitOnce();
   FreeListElement::InitOnce();
   // Create the VM isolate and finish the VM initialization.
   {
     ASSERT(vm_isolate_ == NULL);
     ASSERT(Flags::Initialized());
-    vm_isolate_ = Isolate::Init();
+    vm_isolate_ = Isolate::Init("vm-isolate");
     Zone zone(vm_isolate_);
     HandleScope handle_scope(vm_isolate_);
     Heap::Init(vm_isolate_);
     ObjectStore::Init(vm_isolate_);
     Object::InitOnce();
     StubCode::InitOnce();
     Scanner::InitOnce();
   }
   Isolate::SetCurrent(NULL);  // Unregister the VM isolate from this thread.
   Isolate::SetCreateCallback(create);
   Isolate::SetInterruptCallback(interrupt);
   return true;
 }
 
 
-Isolate* Dart::CreateIsolate() {
+Isolate* Dart::CreateIsolate(const char* name_prefix) {
   // Create a new isolate.
-  Isolate* isolate = Isolate::Init();
+  Isolate* isolate = Isolate::Init(name_prefix);
   ASSERT(isolate != NULL);
   return isolate;
 }
 
 
 void Dart::InitializeIsolate(const uint8_t* snapshot_buffer, void* data) {
   // Initialize the new isolate.
   TIMERSCOPE(time_isolate_initialization);
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
@@ skipping 19 matching lines @@
 }
 
 
 void Dart::ShutdownIsolate() {
   Isolate* isolate = Isolate::Current();
   isolate->Shutdown();
   delete isolate;
 }
 
 }  // namespace dart