- Support a few more ParcelFileDescriptor APIs.
- Support OsConstants and a couple of Os APIs.

- Also clean up f/b/ravenwood. Now we have "runtime-common" library
  that can be used from different components of Ravenwood infra,
  with native code support.

Bug: 292141694
Test: $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh
Test: CtsOsTestCases (on tree hugger)
Flag: EXEMPT hostside test change only
Change-Id: I259a04201e05e615e17da0529cb500a102887ec9

Bug: n/a
Test: n/a
Change-Id: I3c359283b8efa04d0731018c0d6647586221f8cc

... even without a RavenwoodRule.

There are situation where android APIs are called outside of
a RavenwoodRule, but some of the APIs require a RavenwoodRule
to initialize them.

Since Build and SystemProperties are critical and often used by
the test infra code (e.g. test runner or other junit rules), make sure
they're always accessible.

Fix: 341735388
Test: atest CtsOsTestCases
Test: $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh
Change-Id: Iedcfae7e75c5ee9f2c7fb87c61262c2b33450d04

Revert submission 27402077-2024-05-17-PFD

Reason for revert: Broke tests

Reverted changes: /q/submissionid:27402077-2024-05-17-PFD

Change-Id: If2b50329dbcaccb5f13f7631f1fa4df532bfcc60

- Support a few more ParcelFileDescriptor APIs.
- Support OsConstants and a couple of Os APIs.

- Also clean up f/b/ravenwood. Now we have "runtime-common" library
  that can be used from different components of Ravenwood infra,
  with native code support.

Bug: 292141694
Test: $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh
Test: CtsOsTestCases (on tree hugger)

Change-Id: Ia06873114e80e9dd309d2cf077b208aaa7396542

We should minimize uses of it, but once in a while,
it's useful as a last resort.

Bug: 340556010
Test: atest FrameworksCoreTestsRavenwood:com.android.internal.ravenwood.RavenwoodEnvironmentTest
Test: tree hugger for device side tests
Merged-In: Ice651a55cad092514466dd56940a2cf7b2285e4e
Change-Id: Ice651a55cad092514466dd56940a2cf7b2285e4e

- Now unsupported Context API will throw with a more useful message.
- Change all the "stub"s in the policy files to "keep"s. They are the
  same thing (with the current use of hoststubgen) and "keep" matches
  the annotation name better.

Bug: 292141694
Test:  $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh

Change-Id: I56b60543801ebe9a4f1ba253996edc80f1bf3e32

- Moved Color's JNI methods out of Shader.cpp, so Ravenwood
    can enable it without enabling other shader native methods.

- Also, leaned up the Matrix native methods while I'm here.

Bug: 337110712
Test: atest CtsGraphicsTestCases
Test: atest CtsGraphicsTestCasesRavenwood
Test: Boot the device
Change-Id: I0e99fb56ef581b4f59944994d07fd5253208dc31

We should minimize uses of it, but once in a while,
it's useful as a last resort.

Bug: 340556010
Test: atest FrameworksCoreTestsRavenwood:com.android.internal.ravenwood.RavenwoodEnvironmentTest
Test: tree hugger for device side tests
Change-Id: Ice651a55cad092514466dd56940a2cf7b2285e4e

- Also make ravenwood-stats-collector.sh collect "keep-all" files too.

Bug: 292141694
Test: atest hoststubgentest tiny-framework-dump-test hoststubgen-invoke-test
Change-Id: Ib0943c7c2f28c2558ddabe804d692b379fc178ed

Bug: 292141694
Test: Created http://ag/27283818
Change-Id: I5d5a98666debcaca8304b64600e3433eeda3bd3d

Bug: 292141694
Test: ravenwood/scripts/ravenwood-stats-collector.sh
  and check the output file
Change-Id: I4e8e8462248355045e2494aa5e9fd457f85be15a

... to allow other modules to refer to the text
files.

Bug: 292141694
Test: ./scripts/run-all-tests.sh

Change-Id: I46f0c0e238a6d7f8dc1a30cf111296a529c83664

Enable Matrix, Path and Interpolator for starters

Bug: 337110712
Bug: 337329128
Test: ./ravenwood/scripts/run-ravenwood-tests.sh
Test: atest CtsGraphicsTestCasesRavenwood
Test: atest CtsGraphicsTestCases
Change-Id: Iefa17f91837c5382067bf17fc148b158133a4de5

We don't track native allocation size, but we still need to
release native allocations.

Bug: 337110712
Test: atest RavenwoodBivalentTest
Test: atest RavenwoodBivalentTest_device
Test: ./ravenwood/scripts/run-ravenwood-tests.sh
Change-Id: Ia50c963731a26fc951a8040cbf353a5c56505b6a

Test: Treehugger
Bug: 292141694
Change-Id: I87b14fbac29fdefecd9c503c2c97d16b00151e58

- Now we show all methods including unsupported ones, with actual
  policies.
- Also show inherited APIs. e.g. Now Object.toString() will always be
  included in every class.

Bug: 292141694
Test: ./ravenwood/scripts/ravenwood-stats-collector.sh
    and examine the generated files
Test: ./ravenwood/scripts/run-ravenwood-tests.sh

Change-Id: I43bd40cf5013b0eb8f900dbc2f4b4b3fd158ad3f

Bug: 292141694
Test: ./ravenwood/scripts/ravenwood-stats-collector.sh
    and examine the generated files
Change-Id: I3ea52f20ca54644f3ab724f23ae3e8f0e08e269f

Bug: 323970018
Test: atest PowerStatsTestsRavenwood && atest PowerStatsTests
Flag: com.android.server.power.optimization.streamlined_connectivity_battery_stats
Change-Id: Id12cce9c3bb311ff97fcde0f21286cbc761ee48e

Test: MD change only
Bug: 292141694
Change-Id: I10017cc470a85cf2c27d44709e584725925e3d12

This is done in preparation for adding MobileRadioPowerStatsCollector.
Mobile radio has multiple different states (3G, LTE, NR etc) and
multiple different signal levels. The space of all states is vast,
but sparse. This CL prepares to handle per-state stats without
wasting too much RAM and disk space.

Bug: 323970018
Test: atest --host FrameworksCoreTestsRavenwood PowerStatsTestsRavenwood

Change-Id: I76841a59a385f5df0fcc957f5b00116b68d34250

Move all the tests to the `com.android.ravenwoodtest` package in order
to tell them part from actual ravenwood code.

This allows various tools to ignore ravenwood code without ignoring
ravenwood test code.

Test: ./ravenwood/scripts/run-ravenwood-tests.sh
Bug: 292141694

Change-Id: I48728784e7dd2e5aea3327da793923c8ef3b795d

[Fixed the NPE in the sysui test]


- Bug fix: Now native substitution methods can handle bytes correctly.

- Spec change: disallow using DisabledOnNonRavenwood on types.

It turned out the device side test runner can't handle it if a class rule
uses Assume.

We could still support it with a non-class rule, but to avoid confusion,
let's disallow using it on classes for the time being.

- Add more tests

- Some refactoring for future changes.

Test: ./ravenwood/scripts/run-ravenwood-tests.sh
Test: v2/sysui/unit_test on ABTD: https://android-build.corp.google.com/abtd/run/L40000030002931752/
Bug: 292141694
Bug: 332973325
Change-Id: I6d8df1e879840b60326e2beeeee2d8ee7b2ff925

This reverts commit ec5e313e.

Reason for revert: Probable culprit for b/332911993. Will be verifying through ABTD for confirmation and before submitting the revert.

Change-Id: I030e2d27d6b897013106b9d73b57b50823ea87c9

- Bug fix: Now native substitution methods can handle bytes correctly.

- Spec change: disallow using DisabledOnNonRavenwood on types.

It turned out the device side test runner can't handle it if a class rule
uses Assume.

We could still support it with a non-class rule, but to avoid confusion,
let's disallow using it on classes for the time being.

- Add more tests

- Some refactoring for future changes.

Test: ./ravenwood/scripts/run-ravenwood-tests.sh
Bug: 292141694
Change-Id: I6e2fd389ef63d31472f5eafcd9a58ac9e52e8117

Also re-organize the f/b/ravenwood directory.

Test: ./ravenwood/scripts/run-ravenwood-tests.sh
Bug: 292141694
Change-Id: Icf6677c8ab8ead76148ae5278cb54d38fa0b34f2

Test: atest ravenwood-stats-checker
Bug: 292141694
Change-Id: I51a295d940e4a02f33341614ca4b80bca330200c

This reverts commit 21b3abe2.

Reason for revert: Ravenwood has resumed.

Change-Id: I96b6ec9583775cd8b626fef57efcfbd419c645d4

This reverts commit 109fe5c1.

Reason for revert: Ravenwood has resumed.

Change-Id: I53d4fdc0b99bb3b34e38bb5ce8f98ce6ed251b33

This is an extension to the existing `hasFileDescriptors` method, both of which are "Active Objects" of a sort and allow writes across processes.
This check would be useful to perform validations on Bundle entries or
any Parcelable type if it only contains non-active objects and can be
essentially treated read only without having to inspect the marshalled
parcel object.

Test: TODO
Bug: 316589195
API-Coverage-Bug: 323147058
Change-Id: I1fd8c8a27e3e7b90df8fefb0fe77bbad908db6b6

Change-Id: Iee3d67a9e5269453f91bee6f3665a2460ba11517

Change-Id: I46e09b507f84d47ca0aed8f5b471346470f8e7a4

The system properties can be stored in a std::unordered_map and can be
read in one fell swoop.

This reduces the amount of JNI boilerplate required to read individual
system properties.

Also remove the '**n/a**' magic string. LayoutLibLoader system property
logic is designed to support the empty string value.

This is effectively a cherry-pick of ag/25672148 but modified for
LayoutlibLoader in `main`.

Test: layoutlib-tests
Change-Id: I7562dc6eecada3199d8a3b20879b2e1b296cfb32

Many test authors are starting to use `CheckFlagsRule` across suites
like CTS, so instead of recommending that they use `null` when on
Ravenwood, offer them a clear behavior that is either "all-on" or
"all-off".

Eventually we'll explore providing default flag values on Ravenwood,
but let's get something cleaner available now.

Bug: 318841620
Test: ./frameworks/base/ravenwood/run-ravenwood-tests.sh
Change-Id: Id234a375426fad38f64d3a999339bb720eae84bf

Ravenwood test authors should only need to call setServicesRequired()
for the services they directly interact with, but often those
services will have indirect dependencies on other OS internals, and
those dependencies will evolve over time.

To handle this, we add the concept of dependencies to SystemService,
where a service declares the other services required to run.  (They
can choose to omit services from their dependencies where they
gracefully handle a missing service at runtime.)

Bug: 325506297
Test: atest RavenwoodServicesTest
Change-Id: I42187b3494fef499d619ad882891e832b0fd6bca

One of our eventual goals with Ravenwood is to support usage of
system services from test code.  A recent change added support for
"real" services on Ravenwood, and this change expands that to add
support for "fake" services.

Some services are so tangled with dependencies it would take a
long time until we'd be able to run their "real" code.  Also, some
services with deep hardware dependencies that it can be difficult
to add new abstraction layers to support Ravenwood.  Finally, we
want to support service owners that only have resources to meet
the "Pareto principle", where enabling 20% of their functionality
on Ravenwood is enough to unblock 80% of test use-cases.

Thus, we're supporting teams bringing either "real" or "fake"
implementations of their services.  Since all test interactions
still go through published FooManager and FooManagerInternal-style
interfaces, teams can start with a "fake" and slowly transition
to using more of their "real" code over time, without having to
update test clients.

And as a final reminder, because Ravenwood requires test suites
like CTS, we're already verifying that "fake" services behave
similarly to the "real" services on physical devices.

Bug: 325506297
Test: atest CtsContentTestCasesRavenwood
Change-Id: I8ed5bd030e03143c15cb9fa945bbdcb0b412611e

Bug: 324438289
Test: atest --host FrameworksInputMethodSystemServerTests_host:com.android.server.inputmethod.ClientControllerTest
Test: atest FrameworksInputMethodSystemServerTests:com.android.server.inputmethod.ClientControllerTest
Change-Id: I176064d24917f12af3f4551aa82cf54f59466fc0

One of our eventual goals with Ravenwood is to support usage of
system services from test code.  Robolectric takes the approach of
publishing "shadows" which are effectively fakes of the Manager
objects visible to app processes, and it unfortunately doesn't offer
a mechanism to run "real" services code.

In contrast, Ravenwood aims to support API owners progressively
offering their system services either via a "fake" approach, or by
using various levels of the "real" code that would run on a device.

This change wires up the foundational support and uses the simple
`SerialManager` example to demonstrate using the same "real" code
on both Ravenwood and devices.  It also demonstrates the `Internal`
pattern being used to customize behavior for tests.

To offer as hermetic as a test environment as possible, we start
new instances of each requested service for each test.  Requiring
developers to be explicit about the services they need will help
keep overhead low, especially for tests that don't need services.

Bug: 325506297
Test: atest RavenwoodServicesTest
Change-Id: Ie22436b38f2176f91dfce746b899ebab7752bbb8

See the Test: line

Test: ATEST=atest-dev ravenwood/run-ravenwood-tests.sh
Bug: 292141694
Change-Id: I18851d99f175578ffec78873599e842f72568c57

Enable android.util.Log's native code

Test: ./ravenwood/run-ravenwood-tests.sh
Bug: 318393625

Change-Id: I0ec607586d71b1cc34b71db67249e110edc304df