Пример #1
0
func makeVizTmpDir() error {
	if vizTmpDir != "" {
		return nil
	}
	name, err := ioutil.TempDir("", "pprof-")
	if err != nil {
		return err
	}
	tempfile.DeferDelete(name)
	vizTmpDir = name
	return nil
}
Пример #2
0
func invokeVisualizer(interactive **bool, format PostProcessor, suffix string, visualizers []string) PostProcessor {
	return func(input *bytes.Buffer, output io.Writer, ui plugin.UI) error {
		if err := makeVizTmpDir(); err != nil {
			return err
		}
		tempFile, err := tempfile.New(vizTmpDir, "pprof", "."+suffix)
		if err != nil {
			return err
		}
		tempfile.DeferDelete(tempFile.Name())
		if err = format(input, tempFile, ui); err != nil {
			return err
		}
		tempFile.Close() // on windows, if the file is Open, start cannot access it.
		// Try visualizers until one is successful
		for _, v := range visualizers {
			// Separate command and arguments for exec.Command.
			args := strings.Split(v, " ")
			if len(args) == 0 {
				continue
			}
			viewer := exec.Command(args[0], append(args[1:], tempFile.Name())...)
			viewer.Stderr = os.Stderr
			if err = viewer.Start(); err == nil {
				// The viewer might just send a message to another program
				// to open the file. Give that program a little time to open the
				// file before we remove it.
				time.Sleep(1 * time.Second)

				if !**interactive {
					// In command-line mode, wait for the viewer to be closed
					// before proceeding
					return viewer.Wait()
				}
				return nil
			}
		}
		return err
	}
}