Add Kernel Isolate

runtime/vm/kernel_isolate.h

Index: runtime/vm/kernel_isolate.h
diff --git a/runtime/vm/kernel_isolate.h b/runtime/vm/kernel_isolate.h
new file mode 100644
index 0000000000000000000000000000000000000000..66230a12ec41ac9ae6eb9504df8a1cfc69fa9cee
--- /dev/null
+++ b/runtime/vm/kernel_isolate.h
@@ -0,0 +1,59 @@
+// Copyright (c) 2016, 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 RUNTIME_VM_KERNEL_ISOLATE_H_
+#define RUNTIME_VM_KERNEL_ISOLATE_H_
+
+#include "include/dart_api.h"
+
+#include "vm/allocation.h"
+#include "vm/dart.h"
+#include "vm/os_thread.h"
+
+namespace dart {
+
+class ObjectPointerVisitor;
+class SendPort;
+
+class KernelIsolate : public AllStatic {

[Cutch, 2016/12/01 19:47:23]

Lots of this code could be shared between the service isolate and the kernel
isolate. It would be nice to not duplicate code for the KernelIsolate. 

+ public:
+  static const char* kName;
+
+  static void Run();
+
+  static bool Exists();
+  static bool IsRunning();
+  static bool IsKernelIsolate(const Isolate* isolate);
+  static Dart_Port WaitForKernelPort();
+  static Dart_Port KernelPort() { return kernel_port_; }
+
+  static bool LoadScript(const String& url, const String& source);
+
+ protected:
+  static Monitor* monitor_;
+  static Dart_IsolateCreateCallback create_callback_;
+
+  static void InitCallback(Isolate* I);
+  static void SetKernelIsolate(Isolate* isolate);
+  static void SetLoadPort(Dart_Port port);
+  static void FinishedInitializing();
+  static void FinishedExiting();
+
+  static Dart_Port kernel_port_;
+  static Isolate* isolate_;
+  static bool initializing_;
+  static bool shutting_down_;
+
+
+  static Dart_IsolateCreateCallback create_callback() {
+    return create_callback_;
+  }
+
+  friend class Dart;
+  friend class RunKernelTask;
+};
+
+}  // namespace dart
+
+#endif  // RUNTIME_VM_KERNEL_ISOLATE_H_