Add isolate event handler setup in order to be able to propagate isolate

vm/debugger.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_DEBUGGER_H_
 #define VM_DEBUGGER_H_
 
 #include "include/dart_debugger_api.h"
 
 #include "vm/object.h"
@@ skipping 194 matching lines @@
 typedef void BreakpointHandler(SourceBreakpoint* bpt,
                                DebuggerStackTrace* stack);
 
 
 class Debugger {
  public:
   enum EventType {
     kBreakpointReached = 1,
     kBreakpointResolved = 2,
     kExceptionThrown = 3,
+    kIsolateCreated = 4,
+    kIsolateShutdown = 5,
+    kIsolateInterrupted = 6,
   };
   struct DebuggerEvent {
     EventType type;
     union {
       DebuggerStackTrace* stack_trace;
       SourceBreakpoint* breakpoint;
       const Object* exception;
+      Isolate* isolate;
     };
   };
   typedef void EventHandler(DebuggerEvent *event);
 
   Debugger();
   ~Debugger();
 
   void Initialize(Isolate* isolate);
   void Shutdown();
   bool IsActive();
 
   void NotifyCompilation(const Function& func);
 
-  void SetEventHandler(EventHandler* handler);
-  void SetBreakpointHandler(BreakpointHandler* handler);
-
   RawFunction* ResolveFunction(const Library& library,
                                const String& class_name,
                                const String& function_name);
 
   // Set breakpoint at closest location to function entry.
   SourceBreakpoint* SetBreakpointAtEntry(const Function& target_function);
   SourceBreakpoint* SetBreakpointAtLine(const String& script_url,
                                         intptr_t line_number);
 
   void RemoveBreakpoint(intptr_t bp_id);
@@ skipping 15 matching lines @@
 
   RawArray* GetInstanceFields(const Instance& obj);
   RawArray* GetStaticFields(const Class& cls);
   RawArray* GetLibraryFields(const Library& lib);
   RawArray* GetGlobalFields(const Library& lib);
 
   intptr_t CacheObject(const Object& obj);
   RawObject* GetCachedObject(intptr_t obj_id);
   bool IsValidObjectId(intptr_t obj_id);
 
+  static void SetEventHandler(EventHandler* handler);
+  static void SetBreakpointHandler(BreakpointHandler* handler);
+
   // Utility functions.
   static const char* QualifiedFunctionName(const Function& func);
 
   RawObject* GetInstanceField(const Class& cls,
                               const String& field_name,
                               const Instance& object);
   RawObject* GetStaticField(const Class& cls,
                             const String& field_name);
 
   void SignalBpReached();
   void SignalExceptionThrown(const Object& exc);
+  static void SignalIsolateEvent(EventType type);
 
  private:
   enum ResumeAction {
     kContinue,
     kStepOver,
     kStepInto,
     kStepOut
   };
 
   void EnsureFunctionIsDeoptimized(const Function& func);
@@ skipping 26 matching lines @@
   bool ShouldPauseOnException(DebuggerStackTrace* stack_trace,
                               const Object& exc);
 
   void CollectLibraryFields(const GrowableObjectArray& field_list,
                             const Library& lib,
                             const String& prefix,
                             bool include_private_fields);
 
   Isolate* isolate_;
   bool initialized_;
-  BreakpointHandler* bp_handler_;
-  EventHandler* event_handler_;
 
   // ID number generator.
   intptr_t next_id_;
 
   // Current stack trace. Valid while executing breakpoint callback code.
   DebuggerStackTrace* stack_trace_;
 
   RemoteObjectCache* obj_cache_;
 
   SourceBreakpoint* src_breakpoints_;
   CodeBreakpoint* code_breakpoints_;
 
   // Tells debugger what to do when resuming execution after a breakpoint.
   ResumeAction resume_action_;
 
   // If >= 0, last_bpt_line contains the line number of the last breakpoint
   // location for which the breakpoint callback function was called.
   intptr_t last_bpt_line_;
 
   // Do not call back to breakpoint handler if this flag is set.
   // Effectively this means ignoring breakpoints. Set when Dart code may
   // be run as a side effect of getting values of fields.
   bool ignore_breakpoints_;
 
   intptr_t exc_pause_info_;
 
+  static BreakpointHandler* bp_handler_;
+  static EventHandler* event_handler_;
+
   friend class SourceBreakpoint;
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DEBUGGER_H_