func()

in pkg/tools/profiling/go_library.go [75:118]

• 39 lines of code
• 11 McCabe index (conditional complexity)

func (l *GoLibrary) ToModule(pid int32, modName, modPath string, moduleRange []*ModuleRange) (*Module, error) {
	res := &Module{}
	res.Name = modName
	res.Path = modPath
	res.Ranges = moduleRange
	file, err := elf.Open(modPath)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	header := file.FileHeader
	mType := ModuleTypeUnknown
	switch header.Type {
	case elf.ET_EXEC:
		mType = ModuleTypeExec
	case elf.ET_DYN:
		mType = ModuleTypeSo
	}

	if mType == ModuleTypeUnknown {
		if strings.HasSuffix(modPath, ".map") && path.Exists(modPath) {
			mType = ModuleTypePerfMap
		} else if modName == "[vdso]" {
			mType = ModuleTypeVDSO
		}
	} else if mType == ModuleTypeSo {
		section := file.Section(".text")
		if section == nil {
			return nil, fmt.Errorf("could not found .text section in so file: %s", modName)
		}
		res.SoAddr = section.Addr
		res.SoOffset = section.Offset
	}
	res.Type = mType

	// load all symbols
	res.Symbols, err = l.AnalyzeSymbols(modPath)
	if err != nil {
		return nil, err
	}

	return res, nil
}