cess running, not restarting");
      onSuccessfulStart();
      return;
    }
    dumpn("Didn't find ADB process running, restarting");

    this._didRunInitially = true;
    const process = Cc["@mozilla.org/process/util;1"].createInstance(
      Ci.nsIProcess
    );

    // FIXME: Bug 1481691 - We should avoid extracting files every time.
    const adbFile = await this._getAdbFile();
    process.init(adbFile);
    // Hide command prompt window on Windows
    process.startHidden = true;
    process.noShell = true;
    const params = ["start-server"];
    let isStarted = false;
    try {
      await this._runProcess(process, params);
      isStarted = await waitUntil(check);
    } catch (e) {}

    if (isStarted) {
      onSuccessfulStart();
    } else {
      this._ready = false;
      throw new Error("ADB Process didn't start");
    }
  }

  /**
   * Stop the ADB server, but only if we started it.  If it was started before
   * us, we return immediately.
   */
  async stop() {
    if (!this._didRunInitially) {
      return; // We didn't start the server, nothing to do
    }
    await this.kill();
  }

  /**
   * Kill the ADB server.
   */
  async kill() {
    try {
      await runCommand("host:kill");
    } catch (e) {
      dumpn("Failed to send host:kill command");
    }
    dumpn("adb server was terminated by host:kill");
    this._ready = false;
    this._didRunInitially = false;
  }
}

exports.adbProcess = new AdbProcess();
PK