DevTools: Prevent a debugger pause while executing js code in releaseObjectGroup

Source/bindings/core/v8/ScriptDebugServer.cpp

 /*
  * Copyright (c) 2010-2011 Google Inc. 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
@@ skipping 159 matching lines @@
 
 void ScriptDebugServer::setPauseOnNextStatement(bool pause)
 {
     ASSERT(!isPaused());
     if (pause)
         v8::Debug::DebugBreak(m_isolate);
     else
         v8::Debug::CancelDebugBreak(m_isolate);
 }
 
+bool ScriptDebugServer::pausingOnNextStatement()

[Yang, 2014/08/18 09:30:23]

This name is somewhat misleading. Interrupts in V8 are checked usually at
function entry and loop back edges. There is no guarantee that it will trigger
at the next statement.

+{
+    return v8::Debug::CheckDebugBreak(m_isolate);
+}
+
 bool ScriptDebugServer::canBreakProgram()
 {
     if (!m_breakpointsActivated)
         return false;
     return m_isolate->InContext();
 }
 
 void ScriptDebugServer::breakProgram()
 {
     if (!canBreakProgram())
@@ skipping 487 matching lines @@
 {
     return PassOwnPtr<ScriptSourceCode>();
 }
 
 String ScriptDebugServer::preprocessEventListener(LocalFrame*, const String& source, const String& url, const String& functionName)
 {
     return source;
 }
 
 } // namespace blink