Implement issue 554 Add "ProcessDebuggerRequests" call to Debug Agent API

src/execution.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 620 matching lines @@
       if (Debug::IsDebugGlobal(global)) {
         return Heap::undefined_value();
       }
     }
   }
 
   // Collect the break state before clearing the flags.
   bool debug_command_only =
       StackGuard::IsDebugCommand() && !StackGuard::IsDebugBreak();
 
-  // Clear the debug request flags.
+  // Clear the debug break request flag.
   StackGuard::Continue(DEBUGBREAK);
+
+  ProcessDebugMesssages(debug_command_only);
+
+  // Return to continue execution.
+  return Heap::undefined_value();
+}
+
+void Execution::ProcessDebugMesssages(bool debug_command_only) {
+  // Clear the debug command request flag.
   StackGuard::Continue(DEBUGCOMMAND);
 
   HandleScope scope;
   // Enter the debugger. Just continue if we fail to enter the debugger.
   EnterDebugger debugger;
   if (debugger.FailedToEnter()) {
-    return Heap::undefined_value();
+    return;
   }
 
   // Notify the debug event listeners. Indicate auto continue if the break was
   // a debug command break.
   Debugger::OnDebugBreak(Factory::undefined_value(), debug_command_only);
+}
 
-  // Return to continue execution.
-  return Heap::undefined_value();
-}
+
 #endif
 
 Object* Execution::HandleStackGuardInterrupt() {
 #ifdef ENABLE_DEBUGGER_SUPPORT
   if (StackGuard::IsDebugBreak() || StackGuard::IsDebugCommand()) {
     DebugBreakHelper();
   }
 #endif
   if (StackGuard::IsPreempted()) RuntimePreempt();
   if (StackGuard::IsTerminateExecution()) {
@@ skipping 23 matching lines @@
   // All allocation spaces other than NEW_SPACE have the same effect.
   Heap::CollectAllGarbage(false);
   return v8::Undefined();
 }
 
 
 static GCExtension kGCExtension;
 v8::DeclareExtension kGCExtensionDeclaration(&kGCExtension);
 
 } }  // namespace v8::internal