First of all, you should consider broadcast obsolete, specially INADDR_BROADCAST (255.255.255.255). Your question highlights exactly one of the reasons that broadcast is unsuitable. It should die along with IPv4 (hopefully). Note that IPv6 doesn’t even have a concept of broadcast (multicast is used, instead). INADDR_BROADCAST is limited to the local link. Nowadays, it’s only visible … Read more
This is a common source of confusion for people new to MPI. You don’t use MPI_Recv() to receive data sent by a broadcast; you use MPI_Bcast(). Eg, what you want is this: #include <mpi.h> #include <stdio.h> int main(int argc, char** argv) { int rank; int buf; const int root=0; MPI_Init(&argc, &argv); MPI_Comm_rank(MPI_COMM_WORLD, &rank); if(rank == … Read more
Extending the answer By @Rohan Aletty. Here is a sample code of a BroadcastWrapper that refresh broadcast variable based on some ttl public class BroadcastWrapper { private Broadcast<ReferenceData> broadcastVar; private Date lastUpdatedAt = Calendar.getInstance().getTime(); private static BroadcastWrapper obj = new BroadcastWrapper(); private BroadcastWrapper(){} public static BroadcastWrapper getInstance() { return obj; } public JavaSparkContext getSparkContext(SparkContext sc) … Read more
I believe that those actions can only be received by receivers registered in Java code (via registerReceiver()) rather than through receivers registered in the manifest.
There is no broadcast action, but I did find you can hook up a content observer to get notified when the settings change, volume of streams being some of those settings. Register for the android.provider.Settings.System.CONTENT_URI to be notified of all settings changes: mSettingsContentObserver = new SettingsContentObserver( new Handler() ); this.getApplicationContext().getContentResolver().registerContentObserver( android.provider.Settings.System.CONTENT_URI, true, mSettingsContentObserver ); The … Read more