Add a callback to inform embedders when an isolate is being shut down.

vm/isolate.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_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/class_table.h"
@@ skipping 155 matching lines @@
   void set_ast_node_id(int value) { ast_node_id_ = value; }
 
   intptr_t computation_id() const { return computation_id_; }
   void set_computation_id(int value) { computation_id_ = value; }
 
   RawArray* ic_data_array() const { return ic_data_array_; }
   void set_ic_data_array(RawArray* value) { ic_data_array_ = value; }
 
   Debugger* debugger() const { return debugger_; }
 
-  static void SetCreateCallback(Dart_IsolateCreateCallback cback);
-  static Dart_IsolateCreateCallback CreateCallback();
+  static void SetCreateCallback(Dart_IsolateCreateCallback cb) {
+    create_callback_ = cb;
+  }
+  static Dart_IsolateCreateCallback CreateCallback() {
+    return create_callback_;
+  }
 
-  static void SetInterruptCallback(Dart_IsolateInterruptCallback cback);
-  static Dart_IsolateInterruptCallback InterruptCallback();
+  static void SetInterruptCallback(Dart_IsolateInterruptCallback cb) {
+    interrupt_callback_ = cb;
+  }
+  static Dart_IsolateInterruptCallback InterruptCallback() {
+    return interrupt_callback_;
+  }
+
+  static void SetShutdownCallback(Dart_IsolateShutdownCallback cb) {
+    shutdown_callback_ = cb;
+  }
+  static Dart_IsolateShutdownCallback ShutdownCallback() {
+    return shutdown_callback_;
+  }
 
   GcPrologueCallbacks& gc_prologue_callbacks() {
     return gc_prologue_callbacks_;
   }
 
   GcEpilogueCallbacks& gc_epilogue_callbacks() {
     return gc_epilogue_callbacks_;
   }
 
  private:
@@ skipping 31 matching lines @@
   Mutex* mutex_;  // protects stack_limit_ and saved_stack_limit_.
   uword stack_limit_;
   uword saved_stack_limit_;
   MessageHandler* message_handler_;
   uword spawn_data_;
   GcPrologueCallbacks gc_prologue_callbacks_;
   GcEpilogueCallbacks gc_epilogue_callbacks_;
 
   static Dart_IsolateCreateCallback create_callback_;
   static Dart_IsolateInterruptCallback interrupt_callback_;
+  static Dart_IsolateShutdownCallback shutdown_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(Isolate);
 };
 
 // When we need to execute code in an isolate, we use the
 // StartIsolateScope.
 class StartIsolateScope {
  public:
   explicit StartIsolateScope(Isolate* new_isolate)
       : new_isolate_(new_isolate), saved_isolate_(Isolate::Current()) {
@@ skipping 51 matching lines @@
   Isolate* new_isolate_;
   Isolate* saved_isolate_;
   uword saved_stack_limit_;
 
   DISALLOW_COPY_AND_ASSIGN(SwitchIsolateScope);
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_