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
Change-Id: I60f883c049bd9b4562e6ce34d34ead47ba28af5f
Fixes a bug with the signal time of devices using the
modern sync file interface. The bug only affects kernels running
an Android kernel 4.9 and later.
b/63395253
Test: tests/sync_test.cpp
Change-Id: I6fb00bcb8e16a3268c357153edd8e35a44546caa
libsync.so is categorized as SP-NDK and vendor_available.
However, it is marked as VNDK because it is needed by some VNDK libs.
Bug: 63866913
Test: build and boot with BOARD_VNDK_VERSION=current
Change-Id: I116a442ce284a6e5ba1c76f99d44329a9f00fed7
The header names were changed during review, but the library map file
wasn't updated.
Bug: 62229958
Test: CtsGraphicsTestCases:android.graphics.cts.SyncTest
Change-Id: Ie5955865667b35067f1ee209933f159f170419cd
Use of 'inline' without 'static' may allow the C compiler to uninline it
within the compilation unit, depending on the C standard level. Always
using 'static inline' avoids this problem.
Test: build + boot to launcher
Change-Id: Ifb6e1fa6b84286067ddc2daca4c8942c410e56ab
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
Previously all libsync calls would try first the modern/mainline uapi
and if that failed try the legacy uapi, or vice versa. This is
inefficient, and confusing when looking at strace. With this change,
after the first successful syscall, libsync know's what uapi version
the kernel supports, and will only try that version in the future.
Test: sync-unit-tests on bullhead
Change-Id: I8b5de0194da0cfc6c080c0180318e16bb673d3c9
Leave a temporary symlink from the old name to avoid having to change
all dependencies simultaneously.
Bug: 1901466
Test: m
Change-Id: Id210f0091457e52e1a6e048d241a723bdbe8779b
Also modifies sync-unit-test to use sync_file_info instead of the
deprecated sync_fence_info, but check that they match in several tests.
Bug: 35138793
Test: sync-unit-tests on bullhead
Change-Id: Ic672d1c89798435a8b71469500e82c770a66bf4d
Split the sync_fence_info implementation into multiple functions. This
clarifies the logic, and allows the parts to be reused in the upcoming
sync_file_info function.
Test: sync-unit-tests on bullhead
Change-Id: I0ea37067dddf41b831670f08eb99e0b7fd52adce
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
The previous and current types are the same size, so this wouldn't
have caused a bug in practice, but it is confusing, and would have
been a problem in the unlikely event we changed the size of one of the
types.
Test: sync-unit-tests on bullhead
Change-Id: Ic43b81f3b4ff214af86b6b6d4d02c648f95d0c4b
Inserting tuple into unordered_map relies on non standard libc++ extension:
http://stackoverflow.com/a/21313229
This change removes this dependency.
Test: sync-unit-tests (on hikey with SW_SYNC_USER built into kernel)
On mainline if the sw_sync timeline is destroyed the fences doesn't not
signal or error. So change the test to check if the fence is still there
by polling the fence with timeout zero and asserting if it is not
signalled.
Test: Sync unit tests still passes.
Change-Id: Icb8e629018eef35074ae91d0f29ed1f12e90492b
The mainline Sync File implementation doesn't have wait ioctl anymore.
Only poll is supported now, and we already have a test for that.
Test: Sync unit tests still passes.
Change-Id: Iadde7b2173024af9b8d20316e640297cf214c645
Change libsync functions in a way that it can run dynamically on both
APIs.
v2: fix whitespace changes and poll return handling
v3: handle error cases on sync_wait()
Test: Sync unit tests still passes.
Change-Id: I743ab92ce39cbfa75dca41dd0a435efa9f2aab66
hange-Id: Ib56f2c6441b41028bc9f66998676790b7713988a
sw_sync file for debug was moved to debugfs. Try to open it and if it
fails try to open /dev/sw_sync.
Test: Sync unit tests still passes.
Change-Id: Ie078fbc2eb5294f28b916a9e65b7fcd3a18a8580
hange-Id: I216874964368d939bed2779d98cd89e527a57d45
Add the new API to the internal sync.h file. As there is two different
APIs we will need to discovery dynamically which one to use.
v2: Fix Documentation
Test: Sync unit tests still passes.
Change-Id: I2ab3cd46e48ba5d9c73d54f9583b1a8141566581
This patch moves the legacy API to the internal sync.h header
and add documentation to it.
Test: Sync unit tests still passes.
Change-Id: I9b17eb23af30043b3df5fb9e857affad68ba8521
Update sync.c to include the structurs from sw_sync.h. This uapi
header has been deleted.
Test: Built mips/arm/arm64/x86/x86_64. Built and booted angler.
Change-Id: I2495cb17b35f697fb8a2a00f6633ccb53f78293f
The new uapi kernel headers added a new SEGV reason code, so
add it to the tombstone code.
Update sync.c to include the needed data structures itself. Someone
else will be fixing this to work on old versus new kernels.
Change-Id: Icb27713ea38a20003c7671a9bca262eebd96099b
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
Also cleans up two instances of open() with useless mode params, and
changes a few uses of snprintf to use sizeof(buffer) instead of
hardcoded buffer sizes.
Change-Id: If11591003d910c995e72ad8f75afd072c255a3c5
Upstream modifications in K3.12 to the sw_sync driver set O_CLOEXEC on
the fd's returned by the SW_SYNC_IOC_CREATE_FENCE ioctl, therefore we
check the return of fcntl() for a non-negative value instead of strictly 0.
Change-Id: If4c82750fcc0aa3a57f243fa2a94691e3150e4a4
Not complete yet, but substantially more comprehensive than the
interactive test that was there before.
(cherry-picked from internal master, same change-id).
Change-Id: I9019b0a8babbc91f78aa850e0e288bbf05f93500
This change removes the #includes of "linux/*.h" headers from the libsync
header. It currently does this by copying the needed structs that are in the
linux headers. This is intended to be a temporary solution.
Change-Id: Ie7e1a8e05fcf8809ba4aa0e2427efe141dae5327
Used to talk to kernel synchronization framework
Change-Id: I66e1f4a90f5d58d384bf1cec09db52101f182c5e
Signed-off-by: Erik Gilling <konkers@android.com>
