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

vm/code_generator.cc

 // 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.
 
 #include "vm/code_generator.h"
 
 #include "vm/assembler_macros.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
@@ skipping 1279 matching lines @@
   if (interrupt_bits & Isolate::kStoreBufferInterrupt) {
     if (FLAG_verbose_gc) {
       OS::PrintErr("Scavenge scheduled by store buffer overflow.\n");
     }
     isolate->heap()->CollectGarbage(Heap::kNew);
   }
   if (interrupt_bits & Isolate::kMessageInterrupt) {
     isolate->message_handler()->HandleOOBMessages();
   }
   if (interrupt_bits & Isolate::kApiInterrupt) {
+    // Signal isolate interrupt  event.
+    Debugger::SignalIsolateEvent(Debugger::kIsolateInterrupted);
+
     Dart_IsolateInterruptCallback callback = isolate->InterruptCallback();
     if (callback) {
       if ((*callback)()) {
         return;
       } else {
         // TODO(turnidge): Unwind the stack.
         UNIMPLEMENTED();
       }
     }
   }
@@ skipping 392 matching lines @@
                 current->slot(),
                 current->value());
     }
 
     delete current;
   }
 }
 
 
 }  // namespace dart