Will removeFromParent also stop all running actions?

if a node called removeFromParent and retain count is 0, will it stop all running actions first and then clean up?

The cleanup method is what removes the actions…

See Node::cleanup()

void Node::cleanup()
{
    // actions
    this->stopAllActions();
    this->unscheduleAllCallbacks();

#if CC_ENABLE_SCRIPT_BINDING
    if ( _scriptType != kScriptTypeNone)
    {
        int action = kNodeOnCleanup;
        BasicScriptData data(this,(void*)&action);
        ScriptEvent scriptEvent(kNodeEvent,(void*)&data);
        ScriptEngineManager::getInstance()->getScriptEngine()->sendEvent(&scriptEvent);
    }
#endif // #if CC_ENABLE_SCRIPT_BINDING

    // timers
    for( const auto &child: _children)
        child->cleanup();
}