Introduce SensorsHalProxy Split commit 61514f2be5f87df2664a0cedb285466fae621ce3 into 2 patches for relanding with less risk. This is part one. Introduce SensorsHalProxy to handle the communication with upcoming new sensor HAL. SensorsHalProxy runs 2 threads in loops to (1) respond to the guest requests and (2) report sensor data to the guest at a constant rate. For now, SensorsHalProxy only supports "list-sensors" request, which is required to activate sensor HAL. The support for more HAL requests can be added later. Bug: 350076857 Test: check logcat to confirm the guest receives sensors data Change-Id: I07208b17e66882e015c9f4633cc51fb2a76d998d
Make sure virtualization with KVM is available.
grep -c -w "vmx\|svm" /proc/cpuinfo
This should return a non-zero value. If running on a cloud machine, this may take cloud-vendor-specific steps to enable. For Google Compute Engine specifically, see the GCE guide.
ARM specific steps:
/dev/kvm. Note that this method can also be used to confirm support of KVM on any environment.Download, build, and install the host debian packages:
sudo apt install -y git devscripts config-package-dev debhelper-compat golang curl git clone https://github.com/google/android-cuttlefish cd android-cuttlefish # Install build dependencies and build debian packages ./tools/buildutils/build_packages.sh sudo dpkg -i ./cuttlefish-base_*_*64.deb || sudo apt-get install -f sudo dpkg -i ./cuttlefish-user_*_*64.deb || sudo apt-get install -f sudo usermod -aG kvm,cvdnetwork,render $USER sudo reboot
The reboot will trigger installing additional kernel modules and applying udev rules.
Go to http://ci.android.com/
Enter a branch name. Start with aosp-main if you don‘t know what you’re looking for
Navigate to aosp_cf_x86_64_phone and click on userdebug for the latest build
aosp-main-throttled and device target aosp_cf_arm64_only_phone-trunk_staging-userdebugClick on Artifacts
Scroll down to the OTA images. These packages look like aosp_cf_x86_64_phone-img-xxxxxx.zip -- it will always have img in the name. Download this file
Scroll down to cvd-host_package.tar.gz. You should always download a host package from the same build as your images.
On your local system, combine the packages:
mkdir cf cd cf tar xvf /path/to/cvd-host_package.tar.gz unzip /path/to/aosp_cf_x86_64_phone-img-xxxxxx.zip
Launch cuttlefish with:
$ HOME=$PWD ./bin/launch_cvd
You can use adb to debug it, just like a physical device:
$ ./bin/adb -e shell
When launching with ---start_webrtc (the default), you can see a list of all available devices at https://localhost:8443 . For more information, see the WebRTC on Cuttlefish documentation.
You will need to stop the virtual device within the same directory as you used to launch the device.
$ HOME=$PWD ./bin/stop_cvd