查看Android: Add a service的源代码 Android: Add a service 0

#1. aosp/hardware/interfaces/<myservice>/1.0
*  Android.bp
<source lang="c">
hidl_interface {
    name: "android.hardware.<myservice>@1.0",
    root: "android.hardware",
    vndk: {
        enabled: false,
    },
    srcs: [
        "types.hal",
        "I<Myservice>.hal",
    ],
    interfaces: [
        "android.hidl.base@1.0",
    ],
    gen_java: false,
}
</source>
* I<Myservice>.hal
<source lang="c">
package android.hardware.<myservice>@1.0;

interface I<Myservice> {
    func1() generates (<Myservice>Error error);
    func2(handle h, Param1 p1) generates (<MyService>Error error);
};
</source>
* types.hal
<source lang="c">
package android.hardware.<myservie>@1.0;

enum <MyService>Error : uint8_t {
    <MYSERVICE>_SUCCESS = 0,
};
struct Param1 {
    ....
};
</source>
* default/
  - Android.bp
  - simple project source
  - service.cpp
<source lang="c">
#include <sched.h>

#include <android/hardware/<myservice>/1.0/I<Myservice>.h>
#include <binder/ProcessState.h>
#include <hidl/HidlTransportSupport.h>

using android::hardware::myservice::V1_0::I<Myservice>;

int main() {
    // the conventional HAL might start binder services
    android::ProcessState::initWithDriver("/dev/vndbinder");
    android::ProcessState::self()->setThreadPoolMaxThreadCount(4);
    android::ProcessState::self()->startThreadPool();

    // same as SF main thread
    struct sched_param param = {0};
    param.sched_priority = 2;
    if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, &param) != 0) {
        ALOGE("Couldn't set SCHED_FIFO: %d", errno);
    }

    android::hardware::configureRpcThreadpool(4, true /* will join */);

    android::sp<IMyservice> service = new android::hardware::<myservice>::implementation::<Myservice>();
    if (service == nullptr) {
        ALOGE("failed to create device!");
        return -1;
    }

    if (service ->func1() != <Myservice>Error::<MYSERVICE>_SUCCESS) {
        ALOGE("failed to init device");
        return -1;
    }

    if (service->registerAsService() != android::NO_ERROR) {
        ALOGE("failed to register service");
        return 1;
    }

    android::hardware::joinRpcThreadpool();

    ALOGE("service is terminating");
    return 1;
}

</source>