libcxx/utils/ci/vendor/android/emulator-entrypoint.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 # This script is the entrypoint of an Android Emulator Docker container.
  11
  12 set -e
  13
  14 # The container's /dev/kvm has the same UID+GID as the host device. Changing the
  15 # ownership inside the container doesn't affect the UID+GID on the host.
  16 sudo chown emulator:emulator /dev/kvm
  17
  18 # Always use a copy of platform-tools provided by the host to ensure that the
  19 # versions of adb match between the host and the emulator.
  20 if [ ! -x /mnt/android-platform-tools/platform-tools/adb ]; then
  21     echo "error: This image requires platform-tools mounted at" \
  22          "/mnt/android-platform-tools containing platform-tools/adb" >&2
  23     exit 1
  24 fi
  25 sudo cp -r /mnt/android-platform-tools/platform-tools /opt/android/sdk
  26
  27 # Start an adb host server. `adb start-server` blocks until the port is ready.
  28 # Use ADB_REJECT_KILL_SERVER=1 to ensure that an adb protocol version mismatch
  29 # doesn't kill the adb server.
  30 ADB_REJECT_KILL_SERVER=1 adb -a start-server
  31
  32 # This syntax (using an IP address of 127.0.0.1 rather than localhost) seems to
  33 # prevent the adb client from ever spawning an adb host server.
  34 export ADB_SERVER_SOCKET=tcp:127.0.0.1:5037
  35
  36 # The AVD could already exist if the Docker container were stopped and then
  37 # restarted.
  38 if [ ! -d ~/.android/avd/emulator.avd ]; then
  39     # N.B. AVD creation takes a few seconds and creates a mostly-empty
  40     # multi-gigabyte userdata disk image. (It's not useful to create the AVDs in
  41     # advance.)
  42     avdmanager --verbose create avd --name emulator \
  43         --package "${EMU_PACKAGE_NAME}" --device pixel_5
  44 fi
  45
  46 # Use exec so that the emulator is PID 1, so that `docker stop` kills the
  47 # emulator.
  48 exec emulator @emulator -no-audio -no-window \
  49     -partition-size "${EMU_PARTITION_SIZE}"