Exits evs_app gracefully

This change implements a few changes to exit evs_app gracefully when it
receives SIGINT, SIGABRT, or SIGTERM.  In its signal handler, evs_app
issues a command to stop a rendering thread and deactivates the renderer
in use.

Also, EVS HAL reference implementation explicitly hides the current
rendering window before shutting down its GL wrapper.

Fix: 156435029
Test: Run /system/bin/evs_app --test --display 0 and send SIGINT or
      SIGABRT
Change-Id: I8145dc6a4d30cbcaed6dd0c15921a1970cd6fb8f
4 files changed
tree: de9aa97f38e7fc1891347ebc4543abc8802d960e
  1. car-bugreportd/
  2. car-default-input-service/
  3. car-internal-lib/
  4. car-lib/
  5. car-maps-placeholder/
  6. car-systemtest-lib/
  7. car-test-lib/
  8. car-usb-handler/
  9. car_product/
  10. computepipe/
  11. EncryptionRunner/
  12. evs/
  13. experimental/
  14. FrameworkPackageStubs/
  15. obd2-lib/
  16. procfs-inspector/
  17. service/
  18. surround_view/
  19. tests/
  20. tools/
  21. user/
  22. vehicle-hal-support-lib/
  23. watchdog/
  24. .clang-format
  25. .gitignore
  26. Android.mk
  27. CleanSpec.mk
  28. CPPLINT.cfg
  29. OWNERS
  30. PREUPLOAD.cfg
  31. README.md
  32. TEST_MAPPING
README.md

Native (C++) code format is required to be compatible with .clang-format file. Run

git clang-format --style=file --extension='h,cpp,cc' HEAD~

Note that clang-format is not desirable for Android java files. Therefore the command line above is limited to specific extensions.