// Counter granularity (perblock or perfunc).
	CounterGranularity string
}

// MetaFileForPackage returns the expected name of the meta-data file
// for the package whose import path is 'importPath' in cases where
// we're using meta-data generated by the cover tool, as opposed to a
// meta-data file created at runtime.
func MetaFileForPackage(importPath string) string {
	var r [32]byte
	sum := sha256.Sum256([]byte(importPath))

	for i := range runAct.Deps {
		pred := runAct.Deps[i]
		if pred.Mode != "build" || pred.Package == nil {
			continue
		}
		if pred.Package.ImportPath == p.ImportPath {
			metaFile := pred.Objdir + covcmd.MetaFileForPackage(p.ImportPath)
			f, err := os.Open(metaFile)
			if err != nil {
				return "", err
			}
			defer f.Close()
			fi, err2 := f.Stat()
			if err2 != nil {
				return "", err2
			}
			if fi.Size() == 0 {

// covMetaFileName field if 'genCoverMeta' flag is set.
func newBuildActor(p *load.Package, genCoverMeta bool) *buildActor {
	ba := &buildActor{}
	if genCoverMeta {
		ba.covMetaFileName = covcmd.MetaFileForPackage(p.ImportPath)
	}
	return ba
}

func (ba *buildActor) Act(b *Builder, ctx context.Context, a *Action) error {
	return b.build(ctx, a)
}