libcxx/utils/ci/vendor/android/emulator-wait-for-ready.sh

   1 #!/usr/bin/env bash
   2 #===----------------------------------------------------------------------===##
   3 #
   4 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 # See https://llvm.org/LICENSE.txt for license information.
   6 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 #
   8 #===----------------------------------------------------------------------===##
   9
  10 set -ex
  11
  12 # Time to wait in seconds. The emulator ought to start in 5-15 seconds or so,
  13 # so add a safety factor in case something takes longer in CI.
  14 TIMEOUT=${1-300}
  15
  16 # This syntax (using an IP address of 127.0.0.1 rather than localhost) seems to
  17 # prevent the adb client from ever spawning an adb host server.
  18 export ADB_SERVER_SOCKET=tcp:127.0.0.1:5037
  19
  20 # Invoke nc first to ensure that something is listening to port 5037. Otherwise,
  21 # invoking adb might fork an adb server.
  22 #
  23 # TODO: Consider waiting for `adb shell getprop dev.bootcomplete 2>/dev/null
  24 # | grep 1 >/dev/null` as well. It adds ~4 seconds to 21-def-x86 and ~15 seconds
  25 # to 33-goog-x86_64 and doesn't seem to be necessary for running libc++ tests.
  26 timeout ${TIMEOUT} bash -c '
  27 until (nc -z localhost 5037 && adb wait-for-device); do
  28     sleep 0.5
  29 done
  30 '