C++ EventSP类代码示例

    bool operator() (const EventSP &event_sp) const
    {
        if (m_broadcaster && !event_sp->BroadcasterIs(m_broadcaster))
            return false;

        if (m_broadcaster_names)
        {
            bool found_source = false;
            const ConstString &event_broadcaster_name = event_sp->GetBroadcaster()->GetBroadcasterName();
            for (uint32_t i=0; i<m_num_broadcaster_names; ++i)
            {
                if (m_broadcaster_names[i] == event_broadcaster_name)
                {
                    found_source = true;
                    break;
                }
            }
            if (!found_source)
                return false;
        }

        if (m_event_type_mask == 0 || m_event_type_mask & event_sp->GetType())
            return true;
        return false;
    }

bool Listener::FindNextEventInternal(
    std::unique_lock<std::mutex> &lock,
    Broadcaster *broadcaster,             // nullptr for any broadcaster
    const ConstString *broadcaster_names, // nullptr for any event
    uint32_t num_broadcaster_names, uint32_t event_type_mask, EventSP &event_sp,
    bool remove) {
  // NOTE: callers of this function must lock m_events_mutex using a
  // Mutex::Locker
  // and pass the locker as the first argument. m_events_mutex is no longer
  // recursive.
  Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS));

  if (m_events.empty())
    return false;

  Listener::event_collection::iterator pos = m_events.end();

  if (broadcaster == nullptr && broadcaster_names == nullptr &&
      event_type_mask == 0) {
    pos = m_events.begin();
  } else {
    pos = std::find_if(m_events.begin(), m_events.end(),
                       EventMatcher(broadcaster, broadcaster_names,
                                    num_broadcaster_names, event_type_mask));
  }

  if (pos != m_events.end()) {
    event_sp = *pos;

    if (log != nullptr)
      log->Printf("%p '%s' Listener::FindNextEventInternal(broadcaster=%p, "
                  "broadcaster_names=%p[%u], event_type_mask=0x%8.8x, "
                  "remove=%i) event %p",
                  static_cast<void *>(this), GetName(),
                  static_cast<void *>(broadcaster),
                  static_cast<const void *>(broadcaster_names),
                  num_broadcaster_names, event_type_mask, remove,
                  static_cast<void *>(event_sp.get()));

    if (remove) {
      m_events.erase(pos);
      // Unlock the event queue here.  We've removed this event and are about to
      // return
      // it so it should be okay to get the next event off the queue here - and
      // it might
      // be useful to do that in the "DoOnRemoval".
      lock.unlock();
      event_sp->DoOnRemoval();
    }
    return true;
  }

  event_sp.reset();
  return false;
}

bool
Listener::FindNextEventInternal
(
    Broadcaster *broadcaster,   // NULL for any broadcaster
    const ConstString *broadcaster_names, // NULL for any event
    uint32_t num_broadcaster_names,
    uint32_t event_type_mask,
    EventSP &event_sp,
    bool remove)
{
    //LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EVENTS));

    Mutex::Locker lock(m_events_mutex);

    if (m_events.empty())
        return false;


    Listener::event_collection::iterator pos = m_events.end();

    if (broadcaster == NULL && broadcaster_names == NULL && event_type_mask == 0)
    {
        pos = m_events.begin();
    }
    else
    {
        pos = std::find_if (m_events.begin(), m_events.end(), EventMatcher (broadcaster, broadcaster_names, num_broadcaster_names, event_type_mask));
    }

    if (pos != m_events.end())
    {
        event_sp = *pos;
        if (remove)
        {
            m_events.erase(pos);

            if (m_events.empty())
                m_cond_wait.SetValue (false, eBroadcastNever);
        }
        
        // Unlock the event queue here.  We've removed this event and are about to return
        // it so it should be okay to get the next event off the queue here - and it might
        // be useful to do that in the "DoOnRemoval".
        lock.Unlock();
        
        // Don't call DoOnRemoval if you aren't removing the event...
        if (remove)
            event_sp->DoOnRemoval();
            
        return true;
    }

    event_sp.reset();
    return false;
}

size_t Breakpoint::BreakpointEventData::GetNumBreakpointLocationsFromEvent(
    const EventSP &event_sp) {
  const BreakpointEventData *data = GetEventDataFromEvent(event_sp.get());
  if (data)
    return data->m_locations.GetSize();

  return 0;
}

WatchpointEventType
Watchpoint::WatchpointEventData::GetWatchpointEventTypeFromEvent (const EventSP &event_sp)
{
    const WatchpointEventData *data = GetEventDataFromEvent (event_sp.get());

    if (data == NULL)
        return eWatchpointEventTypeInvalidType;
    else
        return data->GetWatchpointEventType();
}

WatchpointSP Watchpoint::WatchpointEventData::GetWatchpointFromEvent(
    const EventSP &event_sp) {
  WatchpointSP wp_sp;

  const WatchpointEventData *data = GetEventDataFromEvent(event_sp.get());
  if (data)
    wp_sp = data->m_new_watchpoint_sp;

  return wp_sp;
}

void Listener::AddEvent(EventSP &event_sp) {
  Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS));
  if (log != nullptr)
    log->Printf("%p Listener('%s')::AddEvent (event_sp = {%p})",
                static_cast<void *>(this), m_name.c_str(),
                static_cast<void *>(event_sp.get()));

  std::lock_guard<std::mutex> guard(m_events_mutex);
  m_events.push_back(event_sp);
  m_events_condition.notify_all();
}

size_t Listener::HandleBroadcastEvent(EventSP &event_sp) {
  size_t num_handled = 0;
  std::lock_guard<std::recursive_mutex> guard(m_broadcasters_mutex);
  Broadcaster *broadcaster = event_sp->GetBroadcaster();
  if (!broadcaster)
    return 0;
  broadcaster_collection::iterator pos;
  broadcaster_collection::iterator end = m_broadcasters.end();
  Broadcaster::BroadcasterImplSP broadcaster_impl_sp(
      broadcaster->GetBroadcasterImpl());
  for (pos = m_broadcasters.find(broadcaster_impl_sp);
       pos != end && pos->first.lock() == broadcaster_impl_sp; ++pos) {
    BroadcasterInfo info = pos->second;
    if (event_sp->GetType() & info.event_mask) {
      if (info.callback != nullptr) {
        info.callback(event_sp, info.callback_user_data);
        ++num_handled;
      }
    }
  }
  return num_handled;
}

size_t
Listener::HandleBroadcastEvent (EventSP &event_sp)
{
    size_t num_handled = 0;
    Mutex::Locker locker(m_broadcasters_mutex);
    Broadcaster *broadcaster = event_sp->GetBroadcaster();
    broadcaster_collection::iterator pos;
    broadcaster_collection::iterator end = m_broadcasters.end();
    for (pos = m_broadcasters.find (broadcaster);
        pos != end && pos->first == broadcaster;
        ++pos)
    {
        BroadcasterInfo info = pos->second;
        if (event_sp->GetType () & info.event_mask)
        {
            if (info.callback != NULL)
            {
                info.callback (event_sp, info.callback_user_data);
                ++num_handled;
            }
        }
    }
    return num_handled;
}

SBEvent::SBEvent (EventSP &event_sp) :
    m_event_sp (event_sp),
    m_opaque_ptr (event_sp.get())
{
}

 bool operator()(const EventSP &event_sp) const {
   return event_sp->BroadcasterIs(m_broadcaster);
 }