Initial isolate reload support

runtime/vm/service_event.h

 // Copyright (c) 2015, 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_SERVICE_EVENT_H_
 #define VM_SERVICE_EVENT_H_
 
 #include "vm/debugger.h"
 
 class DebuggerEvent;
 class TimelineEventBlock;
 
 namespace dart {
 
 class ServiceEvent {
  public:
   enum EventKind {
     kVMUpdate,           // VM identity information has changed
 
-    kIsolateStart,       // New isolate has started
-    kIsolateRunnable,    // Isolate is ready to run
-    kIsolateExit,        // Isolate has exited
-    kIsolateUpdate,      // Isolate identity information has changed
-
+    kIsolateStart,           // New isolate has started
+    kIsolateRunnable,        // Isolate is ready to run
+    kIsolateExit,            // Isolate has exited
+    kIsolateUpdate,          // Isolate identity information has changed
+    kIsolateReload,          // Result of a reload request
     kServiceExtensionAdded,  // A service extension was registered
 
     kPauseStart,         // --pause-isolates-on-start
     kPauseExit,          // --pause-isolates-on-exit
     kPauseBreakpoint,
     kPauseInterrupted,
     kPauseException,
     kNone,               // isolate has not been made runnable yet.
     kResume,
     kBreakpointAdded,
@@ skipping 96 matching lines @@
   }
 
   const Object* exception() const {
     return exception_;
   }
   void set_exception(const Object* exception) {
     ASSERT(kind_ == kPauseException);
     exception_ = exception;
   }
 
+  const Error* reload_error() const {
+    ASSERT(kind_ == kIsolateReload);
+    return reload_error_;
+  }
+  void set_reload_error(const Error* error) {
+    ASSERT(kind_ == kIsolateReload);
+    reload_error_ = error;
+  }
+
   bool at_async_jump() const {
     return at_async_jump_;
   }
   void set_at_async_jump(bool value) {
     at_async_jump_ = value;
   }
 
   const Object* inspectee() const {
     return inspectee_;
   }
@@ skipping 51 matching lines @@
  private:
   Isolate* isolate_;
   EventKind kind_;
   const char* embedder_kind_;
   const char* embedder_stream_id_;
   Breakpoint* breakpoint_;
   ActivationFrame* top_frame_;
   const TimelineEventBlock* timeline_event_block_;
   const String* extension_rpc_;
   const Object* exception_;
+  const Error* reload_error_;
   bool at_async_jump_;
   const Object* inspectee_;
   const Heap::GCStats* gc_stats_;
   const uint8_t* bytes_;
   intptr_t bytes_length_;
   LogRecord log_record_;
   ExtensionEvent extension_event_;
   int64_t timestamp_;
 };
 
 }  // namespace dart
 
 #endif  // VM_SERVICE_EVENT_H_