// Filter filters the report with a focus regex. If no focus is provided,
// it reports back with the entire set of calls.
// Focus regex works on the package, type and function names. Filtered
// results will include parent samples from the call graph.
func (r *Report) Filter(w io.Writer, cum bool, focus *regexp.Regexp) {
// TODO(jbd): Support ignore and hide regex parameters.
if r.p == nil {
return
}
c := r.p.Copy()
c.FilterSamplesByName(focus, nil, nil)
rpt := report.NewDefault(c, report.Options{
OutputFormat: report.JSON,
CumSort: cum,
PrintAddresses: true,
})
report.Generate(w, rpt, nil)
}
func (r *Report) Draw(w io.Writer, cum bool, focus *regexp.Regexp) error {
// TODO(jbd): Support ignore and hide regex parameters.
if r.p == nil {
return errors.New("no such profile")
}
c := r.p.Copy()
c.FilterSamplesByName(focus, nil, nil)
rpt := report.NewDefault(c, report.Options{
OutputFormat: report.Dot,
CumSort: cum,
})
data := bytes.NewBuffer(nil)
report.Generate(data, rpt, nil)
cmd := exec.Command("dot", "-Tsvg")
in, _ := cmd.StdinPipe()
_, err := io.Copy(in, data)
if err != nil {
return err
}
in.Close()
out, err := cmd.Output()
_, err = w.Write(out)
return err
}