C++ SectionSP::GetByteSize方法代码示例

bool SectionLoadList::SetSectionLoadAddress(const lldb::SectionSP &section,
                                            addr_t load_addr,
                                            bool warn_multiple) {
  Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
  ModuleSP module_sp(section->GetModule());

  if (module_sp) {
    LLDB_LOGV(log, "(section = {0} ({1}.{2}), load_addr = {3:x}) module = {4}",
              section.get(), module_sp->GetFileSpec(), section->GetName(),
              load_addr, module_sp.get());

    if (section->GetByteSize() == 0)
      return false; // No change

    // Fill in the section -> load_addr map
    std::lock_guard<std::recursive_mutex> guard(m_mutex);
    sect_to_addr_collection::iterator sta_pos =
        m_sect_to_addr.find(section.get());
    if (sta_pos != m_sect_to_addr.end()) {
      if (load_addr == sta_pos->second)
        return false; // No change...
      else
        sta_pos->second = load_addr;
    } else
      m_sect_to_addr[section.get()] = load_addr;

    // Fill in the load_addr -> section map
    addr_to_sect_collection::iterator ats_pos = m_addr_to_sect.find(load_addr);
    if (ats_pos != m_addr_to_sect.end()) {
      // Some sections are ok to overlap, and for others we should warn. When
      // we have multiple load addresses that correspond to a section, we will
      // always attribute the section to the be last section that claims it
      // exists at that address. Sometimes it is ok for more that one section
      // to be loaded at a specific load address, and other times it isn't.
      // The "warn_multiple" parameter tells us if we should warn in this case
      // or not. The DynamicLoader plug-in subclasses should know which
      // sections should warn and which shouldn't (darwin shared cache modules
      // all shared the same "__LINKEDIT" sections, so the dynamic loader can
      // pass false for "warn_multiple").
      if (warn_multiple && section != ats_pos->second) {
        ModuleSP module_sp(section->GetModule());
        if (module_sp) {
          ModuleSP curr_module_sp(ats_pos->second->GetModule());
          if (curr_module_sp) {
            module_sp->ReportWarning(
                "address 0x%16.16" PRIx64
                " maps to more than one section: %s.%s and %s.%s",
                load_addr, module_sp->GetFileSpec().GetFilename().GetCString(),
                section->GetName().GetCString(),
                curr_module_sp->GetFileSpec().GetFilename().GetCString(),
                ats_pos->second->GetName().GetCString());
          }
        }
      }
      ats_pos->second = section;
    } else
      m_addr_to_sect[load_addr] = section;
    return true; // Changed

  } else {
    if (log) {
      log->Printf(
          "SectionLoadList::%s (section = %p (%s), load_addr = 0x%16.16" PRIx64
          ") error: module has been deleted",
          __FUNCTION__, static_cast<void *>(section.get()),
          section->GetName().AsCString(), load_addr);
    }
  }
  return false;
}