or Mailbox::get_async<void>() if you really want to play with void*.
- Unify the interface of Activity::on_{start/activity}
- New function: Comm::get_dst_data()
+ - New function: Comm::set_payload_size() to set the amount of bytes to simulate.
- New functions: Comm::sendto_{init,async} to initiate a communication
on between two (possibly remote) hosts.