In the past, dexpreopt for boot jars was very inflexible, and it was
incredibly hard to make a change that is as simple as adding a jar to a
boot image. Boot image generation was handled by
"platform_bootclasspath" and "bootclasspath_fragment" separately. This
caused not only code duplication but also the inflexiblity as such a
design did not fit today's use cases, where a boot image may take jars
from multiple mainline modules and the platform, and a mainline module
can contribute to multiple boot images. The design casued a huge
maintenance burden as any change to the boot image cost multi-week
efforts.
In recent years, efforts have been made to improve this a bit by a bit.
This change is another step towards making dexpreopt reasonable.
After this change, all boot images are generated by "dex_bootjars",
which is in build/soong and is therefore available on both the full
source tree and the thin manifest (master-art). The change decouples
profile generation/extraction from boot image generation. Profiles for
mainline modules are still handled by "bootclasspath_fragment"
because they need to be packed into APEXes when building mainline
modules and extracted from APEXes whem building the system image from
prebuilt modules. Boot images are not handled by
"bootclasspath_fragment" anymore.
Bug: 290583827
Test: m (all existing tests are still passing)
Test: Manually checked that the boot images are exactly the same as
before.
Change-Id: Ib5a5f401bee334ffcab5c26618e0c8888b84575a
This is to decouple profile generation from image configs. A boot image
profile is either for a mainline module or for the platform, which is
orthogonal to boot images.
Bug: 290583827
Test: m nothing
Change-Id: I0918f2fa945a2af1839f1a08ecede331c64d0317
This CL is to prepare for the changes in http://r.android.com/2652081.
See the description of that CL for the reasons.
Some tests were set up in a fragile way and were easy to be broken when
the implementation changes. This CL is a pure test change that fixes
them.
This CL also removes TestNoUpdatableJarsInBootImage. That test checks
what should go to the ART boot image and what should go to the
platform one, which does not apply today because boot images are not
associated with mainline modules anymore: a boot image may take jars
from multiple mainline modules and the platform, and a mainline module
can contribute to multiple boot images. In practice, we have ART jars in
the platform boot image, and we are going to add core-icu4j and
consrypt to the ART boot image, which is now for testing only.
Bug: 290583827
Test: m nothing
Change-Id: I22c45cbf6f853b030b68edb51197854e9c53a02e
After this change, there is a clear separation between tests that are
related to dexpreopt and tests that are not. The former uses
PrepareForTestWithDexpreopt, while the latter uses
PrepareForTestWithJavaDefaultModules. The benefit is that the latter
will no longer affected by any dexpreopt changes.
Bug: 280776428
Test: m nothing
Change-Id: Ib957765b9287d51c082e0a33cee17a6bb56daeef
2023-05-11 18:24:44 +01:00
Renamed from java/dexpreopt_bootjars_test.go (Browse further)
