libsync is an NDK/LLNDK library but it's missing "stubs" key. So, when
it is referenced by an APEX, it is bundled in APEX package.
By adding "stubs" property, we can make it a stubs library and APEXes
use it from the system instead of bundling it.
Note that the symbol(sync_wait) is exposed to APEX because it is used
by libui which is used by media APEXes again.
Bug: 158270824
Test: lunch mini_armv7a_neon # no VNDK
m com.andorid.media.swcodec
// see if libsync is not in the APEX
Change-Id: I39e682328acb5cc363a4242601e5bf1470938dac
Android build system added support for building translated binaries
used on natively bridged targets (arm on x86 for example).
However in order to avoid building unnecessary binaries and libraries
for such architectures most modules do not support native bridge by default.
All needed modules have to explicitly indicate if they may be used as part
of translated binary build.
This change enabled native bridge support for libsync because it is a
public library.
Bug: http://b/77159578
Test: make
Change-Id: I993384469fa2b011a15a2ecb1fd2162184c74a47
Statically linking against libsync is no longer a concern, since libsync
has supported the modern sync ABI (which is frozen upstream) after the
recent cleanup works.
Test: `m dist` with aosp_taimen-userdebug
Change-Id: Ic162bc7ff7c9dd306658d11d4b71e2d18730a2ee
Tests in this file depends on long out-of-date behavior of the sync
api. More current tests are in tests/sync_test.cpp.
Test: quis custodiet ipsos custodes?
Change-Id: Ia0a0970dde17c1ae4e1d79fac1a9fe3b54e8fcd6
libsync is used both by platform (e.g. libui.so) and by same-process
HALs (e.g. android.hardware.graphics.mapper@2.0-impl.so). Therefore it
is eligible for either VNDK-SP or LL-NDK. Among the two choices, LL-NDK
was selected because it is already an NDK and is just a thin wrapper
around a few kernel ioctls.
However, since libui (which is a vendor_available:true library) is using
more symbols that are not available to NDK clients, the extra symbols
are exposed as # vndk tag so that they are only available to VNDK
clients, but not to NDK clients.
Bug: 63866913
Test: BOARD_VNDK_VERSION=current m -j successful (2017 pixel)
Test: the built image is bootable
Merged-In: I60f883c049bd9b4562e6ce34d34ead47ba28af5f
Change-Id: I60f883c049bd9b4562e6ce34d34ead47ba28af5f
(cherry picked from commit 058e0919f6)
clang is the default compiler since Android nougat
Test: mma & verified it´s still build with clang
Change-Id: I34adaeef2f6558a09f26027271222bad94780507
Signed-off-by: Lennart Wieboldt <lennart.1997@gmx.de>
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: 33241851
Test: build and flash internal marlin
Test: m -j libsync
Test: build with BOARD_VNDK_VERSION := current
(cherry picked from commit d0b26edf30)
Merged-In: I5b23d2c1f41b842e5a9b7ea257921133b80c3f98
Change-Id: I5b23d2c1f41b842e5a9b7ea257921133b80c3f98
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: 33241851
Test: build and flash internal marlin
Test: m -j libsync
Test: build with BOARD_VNDK_VERSION := current
Change-Id: I5b23d2c1f41b842e5a9b7ea257921133b80c3f98
Soong handles these automatically now.
Bug: 33241851
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
Change-Id: Ia039812817495c00e450eec7292447d5e8f93adb
The new header provides an updated interface to libsync appropriate
for the NDK. Clients use existing syscalls where possible (e.g. poll()
instead of sync_wait()), and the remaining functions return structures
used in mainline Linux kernels rather than the Android staging sync
framework.
Over time, framework clients will be migrated to using the NDK
interface, which will eventually replace the current internal
interface. The only difference is the header will be named
<android/sync.h> in the NDK and <sync/sync.h> internally.
Bug: 35138793
Test: sync-unit-tests on bullhead
Change-Id: Ieb3649b80565393e26b604416158438d32c2a256
See build/soong/README.md for more information.
I tested the following tests on a Nexus9 and linux host, and they
continued to pass:
/data/nativetest{,64}/bootstat_tests/bootstat_tests
out/host/linux-x86/bin/nativetest{,64}/bootstat_tests/bootstat_tests
/data/nativetest64/memunreachable_test/memunreachable_test
out/host/linux-x86/bin/nativetest{,64}/memunreachable_test/memunreachable_test
These continue to fail just like before this change:
/data/nativetest{,64}/sync_test/sync_test (was /system/bin/sync_test)
/data/nativetest{,64}/sync-unit-test/sync-unit-test
/data/nativetest/memunreachable_test/memunreachable_test
Test: See above
Change-Id: I691e564e0cf008dd363e3746223b153d712e024d
