Bound the pending write events queue to a large amount of events in
total (100,000) so that we do not have out of memory crashes when the
sensors framework locks up. Events are 80B of memory each. So this
change caps are pending writes event queue to 8MB of memory.
Bug: 143302327
Test: atest android.hardware.sensors@2.0-halproxy-unit-tests &&
vts-tradefed run commandAndExit vts --skip-all-system-status-check
--primary-abi-only --skip-preconditions --module VtsHalSensorsV2_0Target
Change-Id: I5d0a7f382e3f61fbbe2c74b5c9cf13560432b84c
The multihal framework is a HAL interface for the sensors framework that
allows multiple vendors to package their HAL implementation into a
subHAL dynamic library that will be loaded and used to pass on method
calls to the appropriate subHAL. The HalProxy object, that will act as
the main proxy sensors wrapper for the multiHAL handles writing sensor
events to the event FMQ and wakelock acquisition and releasing via a
callback object it passes to the subHALs.
In order to turn your HAL 2.0 executable into a subHAL to be used by the
multiHAL, implement the Return<Result> initialize(sp<HalProxyCallback>&
callback) method of the ISensorsSubHal derived class. Implement the
ISensorsSubHal* sensorsHalGetSubHal(uint32_t* version)method and have it
return a pointer to your subHAL object. Build this into a dynamic
library and list its filename under /vendor/etc/sensors/hals.conf.
Squashed commits:
07b442e96 (refs/published/mh2_2) MH2 | Write processedEvents instead of
original events.
b38f2e251 Merge "MH2 | Check that subhal index is in range"
d38f99474 Merge "MH2 | Implement debug method of HalProxy"
bf46132fe (refs/published/mh2_4, mh2_4) MH2 | Implement debug method of
HalProxy
1de5bb334 MH2 | Fix wakelock name
e07215347 (refs/published/mh2_3, mh2_3) MH2 | Check that subhal index is
in range
336c1c71e MH2 | Add restart logic in HalProxy::initialize method.
731d7125b MH2 | Change rc file to more appropriate settings
f09465d11 MH2 | Add makeFMQ helpers to HalProxy_test
75cc7bf2f MH2 | Implement wakelock processing thread
e93fdf9a4 MH2 | Implement dynamic sensors callbacks on HalProxy
82b84148c Remove libhwbinder/libhidltransport deps
d45e49b4b Merge "MH2 | Implement pending writes thread"
597142692 MH2 | Implement pending writes thread
db23aa825 MH2 | Implement direct channel and direct report methods
83e4370ae MH2 | Implement injectSensorData method of HalProxy
d0cd57d4c MH2 | Implement ScopeWakelock ctor and dtor
537c0274b MH2 | Add rough proxy callback postEvents method
f97a3f357 Multihal 2.0 - Small tweaks to sensorHandle handling
7a7235461 MultiHal 2.0 - setOperationMode and init direct channel flags
dc7a8e789 MultiHal 2.0 - Get sensors list from subhals
4b4c7b744 MultiHal 2.0 - activate, batch, flush methods of HalProxy
1638531df MultiHal 2.0 - proxying api calls helper methods
aacbf9485 Set up shell to use for unit tests
2879067dd Multihal 2.0 - Implement SubHal discovery
c34e6683b Add a sub-HAL implementation for testing multi-HAL
a689f8a65 Add skeleton for multihal 2.0
Bug: 136511617
Test: atest android.hardware.sensors@2.0-halproxy-unit-tests &&
vts-tradefed run commandAndExit vts --skip-all-system-status-check
--primary-abi-only --skip-preconditions --module VtsHalSensorsV2_0Target
Change-Id: Ibe92d40c92b70848526b0e941bbcffbaf81ffaf2
