@Override // Binder call
public void registerCallback(IDisplayManagerCallback callback) {
if (callback == null) {
throw new IllegalArgumentException("listener must not be null");
}
synchronized (mSyncRoot) {
int callingPid = Binder.getCallingPid();
if (mCallbacks.get(callingPid) != null) {
throw new SecurityException(
"The calling process has already " + "registered an IDisplayManagerCallback.");
}
CallbackRecord record = new CallbackRecord(callingPid, callback);
try {
IBinder binder = callback.asBinder();
binder.linkToDeath(record, 0);
} catch (RemoteException ex) {
// give up
throw new RuntimeException(ex);
}
mCallbacks.put(callingPid, record);
}
}
private void registerCallbackInternal(IDisplayManagerCallback callback, int callingPid) {
synchronized (mSyncRoot) {
if (mCallbacks.get(callingPid) != null) {
throw new SecurityException(
"The calling process has already " + "registered an IDisplayManagerCallback.");
}
CallbackRecord record = new CallbackRecord(callingPid, callback);
try {
IBinder binder = callback.asBinder();
binder.linkToDeath(record, 0);
} catch (RemoteException ex) {
// give up
throw new RuntimeException(ex);
}
mCallbacks.put(callingPid, record);
}
}