tag | 96246a023f70f3d912cb826fb1d8a15b502cf321 | |
---|---|---|
tagger | The Android Open Source Project <initial-contribution@android.com> | Wed Sep 13 09:32:57 2017 -0700 |
object | f1c590a8e5b13d85d7d92cdd675b47f6ed38003d |
Android 8.0.0 release 10
commit | f1c590a8e5b13d85d7d92cdd675b47f6ed38003d | [log] [tgz] |
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author | Dan Willemsen <dwillemsen@google.com> | Fri Apr 07 14:11:05 2017 -0700 |
committer | Steven Moreland <smoreland@google.com> | Tue Apr 11 18:31:14 2017 +0000 |
tree | 27654a3a42e8292d780fae503c55d43c9ed4ab28 | |
parent | eac02f91b43006b8b9a38fb98d4bc417b1933c98 [diff] |
Mark as vendor_available By setting vendor_available, the following may become true: * a prebuilt library from this release may be used at runtime by in a later releasse (by vendor code compiled against this release). so this library shouldn't depend on runtime state that may change in the future. * this library may be loaded twice into a single process (potentially an old version and a newer version). The symbols will be isolated using linker namespaces, but this may break assumptions about 1 library in 1 process (your singletons will run twice). Background: This means that these modules may be built and installed twice -- once for the system partition and once for the vendor partition. The system version will build just like today, and will be used by the framework components on /system. The vendor version will build against a reduced set of exports and libraries -- similar to, but separate from, the NDK. This means that all your dependencies must also mark vendor_available. At runtime, /system binaries will load libraries from /system/lib*, while /vendor binaries will load libraries from /vendor/lib*. There are some exceptions in both directions -- bionic(libc,etc) and liblog are always loaded from /system. And SP-HALs (OpenGL, etc) may load /vendor code into /system processes, but the dependencies of those libraries will load from /vendor until it reaches a library that's always on /system. In the SP-HAL case, if both framework and vendor libraries depend on a library of the same name, both versions will be loaded, but they will be isolated from each other. It's possible to compile differently -- reducing your source files, exporting different include directories, etc. For details see: https://android-review.googlesource.com/368372 None of this is enabled unless the device opts into the system/vendor split with BOARD_VNDK_VERSION := current. Bug: 36426473 Bug: 36079834 Test: Android-aosp_arm.mk is the same before/after Test: build.ninja is the same before/after Test: build-aosp_arm.ninja is the same before/after Test: attempt to compile with BOARD_VNDK_VERSION := current Merged-In: I9722ac3b803d9dab8c01a714d72904fa4dd40196 Change-Id: I9722ac3b803d9dab8c01a714d72904fa4dd40196
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