private void execInPty()

in src/com/pty4j/unix/UnixPtyProcess.java [206:256]
44 lines of code
15 McCabe index (conditional complexity)

  private void execInPty(String[] command, String[] environment, String workingDirectory, Pty pty, Pty errPty,
                         @Nullable Integer initialColumns,
                         @Nullable Integer initialRows) throws IOException {
    if (environment == null) {
      environment = new String[0];
    }
    final String slaveName = pty.getSlaveName();
    final int masterFD = pty.getMasterFD();
    final String errSlaveName = errPty == null ? null : errPty.getSlaveName();
    final int errMasterFD = errPty == null ? -1 : errPty.getMasterFD();
    // int fdm = pty.get
    Reaper reaper = new Reaper(command, environment, workingDirectory, slaveName, masterFD, errSlaveName, errMasterFD, myConsoleMode);

    reaper.setDaemon(true);
    reaper.start();
    // Wait until the subprocess is started or error.
    synchronized (this) {
      while (pid == 0) {
        try {
          wait();
        }
        catch (InterruptedException e) {
          Thread.currentThread().interrupt();
        }
      }

      boolean init = Boolean.getBoolean("unix.pty.init") || initialColumns != null || initialRows != null;
      if (init) {
        int cols = initialColumns != null ? initialColumns : Integer.getInteger("unix.pty.cols", 80);
        int rows = initialRows != null ? initialRows : Integer.getInteger("unix.pty.rows", 25);
        WinSize size = new WinSize(cols, rows);

        // On OSX, there is a race condition with pty initialization
        // If we call com.pty4j.unix.Pty.setTerminalSize(com.pty4j.WinSize) too early, we can get ENOTTY
        for (int attempt = 0; attempt < 1000; attempt++) {
          try {
            myPty.setWindowSize(size, this);
            break;
          }
          catch (UnixPtyException e) {
            if (e.getErrno() != CLibrary.ENOTTY) {
              break;
            }
          }
        }
      }
    }
    if (pid == -1) {
      throw new IOException("Exec_tty error:" + reaper.getErrorMessage(), reaper.getException());
    }
  }