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android / device / google / cuttlefish / c6553e1a0
commitc6553e1a0037b64488257dfb8ad7e00075e0eac2[log] [tgz]
authorTristan Muntsinger <muntsinger@google.com>Thu Mar 04 03:16:43 2021 +0000
committerTristan Muntsinger <muntsinger@google.com>Thu Mar 04 23:58:53 2021 +0000
treea8b52e5b9f4ada774c8047f0e163eb60cf0a4bb9
parent97d209fa204fe3b7c7611050e8af757a31d16b79 [diff]
Fix metrics prompt causing 100% cpu usage

The issue was caused by cin.get, which immediately
returns when there's no TTY present and doesn't alter
the provided char.  This caused an infinite loop.

The fix is to check the eof flag on the cin stream,
which is set when there's no TTY present, and default
to 'n'.

The downside to this is there will not be any metrics
collection when launch_cvd is run with no TTY, unless
-report_anonymous_usage_stats='y' is specified as an
argument to launch_cvd.

Bug: 181600535
Test: local build
Change-Id: Ic7eafcb7337ef56d75cafcb76f545b4af27224da
1 file changed
tree: a8b52e5b9f4ada774c8047f0e163eb60cf0a4bb9
  1. build/
  2. common/
  3. guest/
  4. host/
  5. recovery/
  6. shared/
  7. tests/
  8. tools/
  9. vsoc_arm64/
  10. vsoc_arm64_only/
  11. vsoc_arm_only/
  12. vsoc_x86/
  13. vsoc_x86_64/
  14. vsoc_x86_64_only/
  15. vsoc_x86_noapex/
  16. vsoc_x86_only/
  17. rustfmt.toml ⇨ ../../../build/soong/scripts/rustfmt.toml
  18. .clang-format
  19. Android.bp
  20. Android.mk
  21. AndroidProducts.mk
  22. CleanSpec.mk
  23. default-permissions.xml
  24. dtb.img
  25. fetcher.mk
  26. host_package.mk
  27. METADATA
  28. OWNERS
  29. PREUPLOAD.cfg
  30. README.md
  31. required_images
  32. TEST_MAPPING
README.md

Cuttlefish Getting Started

Try Cuttlefish

  1. 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.

  2. Download, build, and install the host debian package:

    git clone https://github.com/google/android-cuttlefish
cd android-cuttlefish
debuild -i -us -uc -b
sudo dpkg -i ../cuttlefish-common_*_amd64.deb || sudo apt-get install -f
sudo reboot

    The reboot will trigger installing additional kernel modules and applying udev rules.

  3. Go to http://ci.android.com/

  4. Enter a branch name. Start with aosp-master if you don‘t know what you’re looking for

  5. Navigate to aosp_cf_x86_phone and click on userdebug for the latest build

  6. Click on Artifacts

  7. Scroll down to the OTA images. These packages look like aosp_cf_x86_phone-img-xxxxxx.zip -- it will always have img in the name. Download this file

  8. Scroll down to cvd-host_package.tar.gz. You should always download a host package from the same build as your images.

  9. 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_phone-img-xxxxxx.zip

  10. Launch cuttlefish with:

$ HOME=$PWD ./bin/launch_cvd

  1. Stop cuttlefish with:

$ HOME=$PWD ./bin/stop_cvd

Debug Cuttlefish

You can use adb to debug it, just like a physical device:

$ ./bin/adb -e shell

Launch Viewer

You can use the TightVNC JViewer. Once you have downloaded the TightVNC Java Viewer JAR in a ZIP archive, run it with

$ java -jar tightvnc-jviewer.jar -ScalingFactor=50 -Tunneling=no -host=localhost -port=6444

Click “Connect” and you should see a lock screen!