void MPIApplication::Recv(void *buffer, size_t count, int source)
{
size_t recvd = 0;
do {
Status status;
COMM_WORLD.Recv(buffer+recvd, count-recvd, MPI_BYTE, source, MPI_ANY_TAG, status);
recvd += status.Get_count(MPI_BYTE);
} while(recvd < count);
}
void task5() {
barrier("Task 5");
if (id != size - 1) {
int data = rand();
int to = size - 1;
comm.Send(&data, 1, INTEGER, to, 0);
printf("Process %d sent data [%d] to %d\n", id, data, to);
} else {
Status s;
comm.Probe(ANY_SOURCE, ANY_TAG, s);
int count = s.Get_count(INTEGER);
int* buffer = new int[count];
int from = s.Get_source();
comm.Recv(buffer, count, INTEGER, from, 0);
for (int i = 0; i < count; ++i) {
printf("Process %d recieved data [%d] from %d\n", id, *(buffer + i), from);
}
delete buffer;
}
}
