214         auto event_fd = EventFd::OpenEventFile(selection.event_attr, tid, cpu);  in OpenEventFiles()  local
215         if (event_fd != nullptr) {  in OpenEventFiles()
217           selection.event_fds.push_back(std::move(event_fd));  in OpenEventFiles()
239     for (auto& event_fd : selection.event_fds) {  in ReadCounters()  local
241       if (!event_fd->ReadCounter(&counter_info.counter)) {  in ReadCounters()
244       counter_info.tid = event_fd->ThreadId();  in ReadCounters()
245       counter_info.cpu = event_fd->Cpu();  in ReadCounters()
255     for (auto& event_fd : selection.event_fds) {  in PreparePollForEventFiles()  local
257       event_fd->PreparePollForMmapData(&poll_fd);  in PreparePollForEventFiles()
265     for (auto& event_fd : selection.event_fds) {  in MmapEventFiles()  local
266       if (!event_fd->MmapContent(mmap_pages)) {  in MmapEventFiles()
274 static bool ReadMmapEventDataForFd(std::unique_ptr<EventFd>& event_fd,  in ReadMmapEventDataForFd()  argument
280     size_t size = event_fd->GetAvailableMmapData(&data);  in ReadMmapEventDataForFd()
294     for (auto& event_fd : selection.event_fds) {  in ReadMmapEventData()  local
297         if (!ReadMmapEventDataForFd(event_fd, callback, &have_data)) {  in ReadMmapEventData()