Basic `ParcelFileDescriptor` on Ravenwood.

One of the final foundational building blocks, which wraps a Java
`FileDescriptor` object.  Since many of the existing APIs here offer
to work with "raw" int FD values, we need to reach "behind the
curtain" to read/write the internal value.  Thankfully `SharedSecrets`
already offers a way to gain access without requiring us to open
up the entire `java.io` area of the `java.base` module.

Bring along `android.util.CloseGuard` as a no-op wrapper.

Bug: 324417456
Test: atest CtsOsTestCasesRavenwood
Merged-in: I8af63d1c5a4bb2ef76bd43594a1072f2ca537d68
Change-Id: I8af63d1c5a4bb2ef76bd43594a1072f2ca537d68
2 files changed
tree: 4f855bd9b4d4592cf4f392335c11fde39c70f209
  1. ci/
  2. common/
  3. core/
  4. packaging/
  5. target/
  6. teams/
  7. tests/
  8. tools/
  9. .gitignore
  10. banchanHelp.sh
  11. buildspec.mk.default
  12. Changes.md
  13. CleanSpec.mk
  14. cogsetup.sh
  15. Deprecation.md
  16. envsetup.sh
  17. help.sh
  18. METADATA
  19. navbar.md
  20. OWNERS
  21. PREUPLOAD.cfg
  22. rbesetup.sh
  23. README.md
  24. shell_utils.sh
  25. tapasHelp.sh
  26. Usage.txt
README.md

Android Make Build System

This is the Makefile-based portion of the Android Build System.

For documentation on how to run a build, see Usage.txt

For a list of behavioral changes useful for Android.mk writers see Changes.md

For an outdated reference on Android.mk files, see build-system.html. Our Android.mk files look similar, but are entirely different from the Android.mk files used by the NDK build system. When searching for documentation elsewhere, ensure that it is for the platform build system -- most are not.

This Makefile-based system is in the process of being replaced with Soong, a new build system written in Go. During the transition, all of these makefiles are read by Kati, and generate a ninja file instead of being executed directly. That's combined with a ninja file read by Soong so that the build graph of the two systems can be combined and run as one.