Handle thread preemption in debugger

src/runtime.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 4949 matching lines @@
   CONVERT_NUMBER_CHECKED(uint32_t, index, Uint32, args[1]);
 
   return obj->GetElementWithInterceptor(*obj, index);
 }
 
 
 static Object* Runtime_CheckExecutionState(Arguments args) {
   ASSERT(args.length() >= 1);
   CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]);
   // Check that the break id is valid.
-  if (Top::break_id() == 0 || break_id != Top::break_id()) {
+  if (Debug::break_id() == 0 || break_id != Debug::break_id()) {
     return Top::Throw(Heap::illegal_execution_state_symbol());
   }
 
   return Heap::true_value();
 }
 
 
 static Object* Runtime_GetFrameCount(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 1);
 
   // Check arguments.
   Object* result = Runtime_CheckExecutionState(args);
   if (result->IsFailure()) return result;
 
   // Count all frames which are relevant to debugging stack trace.
   int n = 0;
-  StackFrame::Id id = Top::break_frame_id();
+  StackFrame::Id id = Debug::break_frame_id();
   if (id == StackFrame::NO_ID) {
     // If there is no JavaScript stack frame count is 0.
     return Smi::FromInt(0);
   }
   for (JavaScriptFrameIterator it(id); !it.done(); it.Advance()) n++;
   return Smi::FromInt(n);
 }
 
 
 static const int kFrameDetailsFrameIdIndex = 0;
@@ skipping 24 matching lines @@
 static Object* Runtime_GetFrameDetails(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 2);
 
   // Check arguments.
   Object* check = Runtime_CheckExecutionState(args);
   if (check->IsFailure()) return check;
   CONVERT_NUMBER_CHECKED(int, index, Int32, args[1]);
 
   // Find the relevant frame with the requested index.
-  StackFrame::Id id = Top::break_frame_id();
+  StackFrame::Id id = Debug::break_frame_id();
   if (id == StackFrame::NO_ID) {
     // If there are no JavaScript stack frames return undefined.
     return Heap::undefined_value();
   }
   int count = 0;
   JavaScriptFrameIterator it(id);
   for (; !it.done(); it.Advance()) {
     if (count == index) break;
     count++;
   }
@@ skipping 1092 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     Counters::gc_last_resort_from_js.Increment();
     Heap::CollectAllGarbage();
   }
 }
 
 
 } }  // namespace v8::internal