C++ SearchFilter::CompUnitPasses方法代码示例

Searcher::CallbackReturn
BreakpointResolverFileLine::SearchCallback
(
    SearchFilter &filter,
    SymbolContext &context,
    Address *addr,
    bool containing
)
{
    SymbolContextList sc_list;

    assert (m_breakpoint != NULL);
    
    // There is a tricky bit here.  You can have two compilation units that #include the same file, and
    // in one of them the function at m_line_number is used (and so code and a line entry for it is generated) but in the
    // other it isn't.  If we considered the CU's independently, then in the second inclusion, we'd move the breakpoint 
    // to the next function that actually generated code in the header file.  That would end up being confusing.
    // So instead, we do the CU iterations by hand here, then scan through the complete list of matches, and figure out 
    // the closest line number match, and only set breakpoints on that match.
    
    // Note also that if file_spec only had a file name and not a directory, there may be many different file spec's in
    // the resultant list.  The closest line match for one will not be right for some totally different file.
    // So we go through the match list and pull out the sets that have the same file spec in their line_entry
    // and treat each set separately.
    
    const size_t num_comp_units = context.module_sp->GetNumCompileUnits();
    for (size_t i = 0; i < num_comp_units; i++)
    {
        CompUnitSP cu_sp (context.module_sp->GetCompileUnitAtIndex (i));
        if (cu_sp)
        {
            if (filter.CompUnitPasses(*cu_sp))
                cu_sp->ResolveSymbolContext (m_file_spec, m_line_number, m_inlines, false, eSymbolContextEverything, sc_list);
        }
    }
    StreamString s;
    s.Printf ("for %s:%d ",
                        m_file_spec.GetFilename().AsCString("<Unknown>"),
                        m_line_number);

    SetSCMatchesByLine (filter, sc_list, m_skip_prologue, s.GetData());

    return Searcher::eCallbackReturnContinue;
}

Searcher::CallbackReturn
BreakpointResolverName::SearchCallback(SearchFilter &filter,
                                       SymbolContext &context, Address *addr,
                                       bool containing) {
  SymbolContextList func_list;
  // SymbolContextList sym_list;

  uint32_t i;
  bool new_location;
  Address break_addr;
  assert(m_breakpoint != nullptr);

  Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_BREAKPOINTS));

  if (m_class_name) {
    if (log)
      log->Warning("Class/method function specification not supported yet.\n");
    return Searcher::eCallbackReturnStop;
  }
  bool filter_by_cu =
      (filter.GetFilterRequiredItems() & eSymbolContextCompUnit) != 0;
  bool filter_by_language = (m_language != eLanguageTypeUnknown);
  const bool include_symbols = !filter_by_cu;
  const bool include_inlines = true;
  const bool append = true;

  switch (m_match_type) {
  case Breakpoint::Exact:
    if (context.module_sp) {
      for (const auto &lookup : m_lookups) {
        const size_t start_func_idx = func_list.GetSize();
        context.module_sp->FindFunctions(
            lookup.GetLookupName(), nullptr, lookup.GetNameTypeMask(),
            include_symbols, include_inlines, append, func_list);

        const size_t end_func_idx = func_list.GetSize();

        if (start_func_idx < end_func_idx)
          lookup.Prune(func_list, start_func_idx);
      }
    }
    break;
  case Breakpoint::Regexp:
    if (context.module_sp) {
      context.module_sp->FindFunctions(
          m_regex,
          !filter_by_cu, // include symbols only if we aren't filtering by CU
          include_inlines, append, func_list);
    }
    break;
  case Breakpoint::Glob:
    if (log)
      log->Warning("glob is not supported yet.");
    break;
  }

  // If the filter specifies a Compilation Unit, remove the ones that don't
  // pass at this point.
  if (filter_by_cu || filter_by_language) {
    uint32_t num_functions = func_list.GetSize();

    for (size_t idx = 0; idx < num_functions; idx++) {
      bool remove_it = false;
      SymbolContext sc;
      func_list.GetContextAtIndex(idx, sc);
      if (filter_by_cu) {
        if (!sc.comp_unit || !filter.CompUnitPasses(*sc.comp_unit))
          remove_it = true;
      }

      if (filter_by_language) {
        LanguageType sym_language = sc.GetLanguage();
        if ((Language::GetPrimaryLanguage(sym_language) !=
             Language::GetPrimaryLanguage(m_language)) &&
            (sym_language != eLanguageTypeUnknown)) {
          remove_it = true;
        }
      }

      if (remove_it) {
        func_list.RemoveContextAtIndex(idx);
        num_functions--;
        idx--;
      }
    }
  }

  // Remove any duplicates between the function list and the symbol list
  SymbolContext sc;
  if (func_list.GetSize()) {
    for (i = 0; i < func_list.GetSize(); i++) {
      if (func_list.GetContextAtIndex(i, sc)) {
        bool is_reexported = false;

        if (sc.block && sc.block->GetInlinedFunctionInfo()) {
          if (!sc.block->GetStartAddress(break_addr))
            break_addr.Clear();
        } else if (sc.function) {
          break_addr = sc.function->GetAddressRange().GetBaseAddress();
          if (m_skip_prologue && break_addr.IsValid()) {
//.........这里部分代码省略.........