成员的完整列表，这些成员属于 apollo::cyber::transport::ArenaSegmentBlockDescriptor,包括所有继承而来的类成员

bytes_	apollo::cyber::transport::ArenaSegmentBlockDescriptor
read_write_mutex_	apollo::cyber::transport::ArenaSegmentBlockDescriptor
reading_ref_count_	apollo::cyber::transport::ArenaSegmentBlockDescriptor
size_	apollo::cyber::transport::ArenaSegmentBlockDescriptor
struct_	apollo::cyber::transport::ArenaSegmentBlockDescriptor
writing_ref_count_	apollo::cyber::transport::ArenaSegmentBlockDescriptor