Oreo FingerprintService callstack 따라가기

 계속 작성중입니다.

1> frameworks/base/core/java/android/hardware/fingerprint/IFingerprintService.aidl
   package android.hardware.fingerprint;
   interface IFingerprintService { ….
      int postEnroll(IBinder token);  …. }
2> frameworks/base/core/java/android/hardware/fingerprint/FingerprintManager.java
   public class FingerprintManager { ….
      private IFingerprintService mService;
      FingerprintManager(Context ctx, IFingerprintService service) {
        mService = service; .... }
      long postEnroll() { .... mService.postEnroll(mToken); ... }
3> frameworks/base/core/java/android/app/SystemServiceRegistry.java
   registerService(Context.xxx_SERVICE,FingerprintManager.class,...
  --> createService(....) 
  --> IBinder bi = ServiceManager.getServiceOrThrow
                               (Context.FINGERPRINT_SERVICE);
  IFingerprintService svc = IFingerprintService.Stub.asInterface(bi);
  return new FingerprintManager(ctx.getOuterContext(), svc);
4> frameworks/base/services/core/java/com/android/server/fingerprint/FingerprintService.java
  class FingerprintService ... implements IHwBinder.DeathRecipient{
    ....
    private IBiometricsFingerprint mDaemon;
    int startPostEnroll(IBinder token) {
      IBiometricsFingerprint daemon = getFingerprintDaemon();
      return daemon.postEnroll(); }
    IBiometricsFingerprint getFingerprintDaemon() { ...
      mDaemon = IBiometricsFingerprint.getService();
      mDaemon.asBinder().linkToDeath(this, 0);
      mDaemon.setNotify(mDaemonCallback); .... return mDaemon  }
    void onStart() { ... 
       publishBinderService(..., new FingerprintServiceWrapper()); ... }
    class FingerprintServiceWrapper extends IFingerprintService.Stub{
       .... int postEnroll(IBinder token) { ..... 
               return startPostEnroll(token); }