Android HIDL lshal
https://source.android.google.cn/devices/architecture/vintf/resources?hl=zh-cn
LSHAL
LSHAL 是一种设备端工具，可以列出向 hwservicemanager 注册的所有 HAL 以及设备上所有可用的直通实现（例如 [email protected]）。它还可以根据该列表生成设备清单文件：
adb shell su 0 /system/bin/lshal –init-vintf
130|rk3399pro_firefly_aiojd4:/ # lshal
All binderized services (registered services through hwservicemanager)
Interface Thread Use Server Clients
[email protected]::IDisplayService/default 0/1 279 237
[email protected]::ISchedulingPolicyService/default 0/4 577 237
[email protected]::ISensorManager/default 0/4 577 237
[email protected]::IEffectsFactory/default 0/3 261 388 237
[email protected]::IDevicesFactory/default 0/3 261 388 237
[email protected]::IBluetoothHci/default 0/2 262 237
[email protected]::ICameraProvider/legacy/0 0/3 263 389 237
[email protected]::IMediaCasService/default 0/2 264 237
[email protected]::ISurfaceFlingerConfigs/default 0/2 265 718 1200 739 944 577 279 237
[email protected]::ICryptoFactory/default 0/2 266 237
[email protected]::ICryptoFactory/widevine 0/2 267 237
[email protected]::IDrmFactory/default 0/2 266 237
[email protected]::IDrmFactory/widevine 0/2 267 237
[email protected]::IGnss/default 0/1 259 577 237
[email protected]::IAllocator/default 0/4 269 263 279 237
[email protected]::IComposer/default 0/4 270 279 237
[email protected]::IKeymasterDevice/default 0/1 250 393 237
[email protected]::ILight/default 0/1 271 577 237
[email protected]::IOmx/default 0/5 402 237
[email protected]::IOmxStore/default 0/5 402 237
[email protected]::IDevice/armnn 0/1 272 237
[email protected]::IDevice/ovx 0/2 273 237
[email protected]::IPower/default 0/1 274 577 237
[email protected]::ISensors/default 1/2 275 577 237
[email protected]::ISoundTriggerHw/default 0/3 261 388 237
[email protected]::IWifi/default 0/1 276 577 237
[email protected]::IWifi/default 0/1 276 577 237
[email protected]::IAllocator/ashmem 0/1 260 263 237
[email protected]::IBase/armnn 0/1 272 237
[email protected]::IBase/ashmem 0/1 260 263 237
[email protected]::IBase/default 0/4 577 237
[email protected]::IBase/legacy/0 0/3 263 389 237
[email protected]::IBase/ovx 0/2 273 237
[email protected]::IBase/widevine 0/2 267 237
[email protected]::IServiceManager/default 1/1 237 577
[email protected]::IServiceManager/default 1/1 237 577
[email protected]::ITokenManager/default 1/1 237
[email protected]::INetd/default 0/1 398 237
[email protected]::IKeystore/default 0/1 393 237
All interfaces that getService() has ever return as a passthrough interface;
PIDs / processes shown below might be inaccurate because the process
might have relinquished the interface or might have died.
The Server / Server CMD column can be ignored.
The Clients / Clients CMD column shows all process that have ever dlopen'ed
the library and successfully fetched the passthrough implementation.
Interface Thread Use Server Clients
[email protected]::IEffectsFactory/default N/A 261 261
[email protected]::IDevicesFactory/default N/A 261 261
[email protected]::IBluetoothHci/default N/A 262 262
[email protected]::ICameraProvider/legacy/0 N/A 263 263
[email protected]::ICryptoFactory/default N/A 266 266
[email protected]::IDrmFactory/default N/A 266 266
[email protected]::IGnss/default N/A 259 259
[email protected]::IAllocator/default N/A 269 269
[email protected]::IComposer/default N/A 270 270
[email protected]::IMapper/default N/A N/A 263 270 279 577 718 739 944 1200
[email protected]::IKeymasterDevice/default N/A 250 250
[email protected]::ILight/default N/A 271 271
[email protected]::IPower/default N/A 274 274
[email protected]::ISensors/default N/A 275 275
[email protected]::ISoundTriggerHw/default N/A 261 261
[email protected]::IMapper/ashmem N/A N/A 397 402 577 739
All available passthrough implementations (all -impl.so files)
Interface Thread Use Server Clients
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A 261
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A 261
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 262
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A 263
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A 266
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 259
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 269
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 270
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A 263 387
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 270 279 386 577 718 739 930 944 1162 1176 1200 1216 1255 1289 1323 1341 1364 1382
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 250
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 271
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 274
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A
[email protected]::I*/* (/vendor/lib64/hw/) N/A N/A 275
[email protected]::I*/* (/vendor/lib/hw/) N/A N/A 261
[email protected]::I*/* (/system/lib/hw/) N/A N/A 397 402
[email protected]::I*/* (/system/lib64/hw/) N/A N/A 577 739
rk3399pro_firefly_aiojd4:/ #
rk3399pro_firefly_aiojd4:/ #
130|rk3399pro_firefly_aiojd4:/ # /system/bin/lshal --init-vintf
rk3399pro_firefly_aiojd4:/ #
rk3399pro_firefly_aiojd4:/ #
rk3399pro_firefly_aiojd4:/ #
https://devarea.com/android-hidl-and-project-treble/#.XTWcS_mAShE
编写客户端要使用该服务，我们将编写一个简单的客户端应用程序 通常，它将成为Google编写的Android框架的一部分。 例如，如果通用框架想要访问振动器服务：在文件框架/ base / services / core / jni / com_android_server_VibratorService.cpp中
static sp mHal; ... mHal = IVibrator::getService(); ... Status retStatus = mHal->on(timeout_ms); ... Status retStatus = mHal->off();