// Handle TCP traffic, from a client to this server asking for work to be
// done. This is called on the TCP reader thread, not a Fork/Join worker
// thread. We want to do the bulk TCP read in the TCP reader thread.
static void tcp_exec(final AutoBuffer ab) {
final int ctrl = ab.getCtrl();
final int task = ab.getTask();
final int flag = ab.getFlag();
assert flag == CLIENT_UDP_SEND; // Client sent a request to be executed?
// Act "as if" called from the UDP packet code, by recording the task just
// like the packet we will be receiving (eventually). The presence of this
// packet is used to stop dup-actions on dup-sends. Racily inserted, keep
// only the last one.
DTask dt1 = ab._h2o.record_task(task);
assert dt1 == null || dt1 instanceof NOPTask
: "#"
+ task
+ " "
+ dt1.getClass(); // For TCP, no repeats, so 1st send is only send (except for UDP
// timeout retries)
// Make a remote instance of this dude from the stream, but only if the
// racing UDP packet did not already make one. Start the bulk TCP read.
final DTask dt = ab.get(DTask.class);
// Here I want to execute on this, but not block for completion in the
// TCP reader thread. Jam the task on some F/J thread.
UDP.udp
.UDPS[ctrl]
.pool()
.execute(
new CountedCompleter() {
public void compute() {
remexec(dt, ab._h2o, task, ab).close();
tryComplete();
}
public boolean onExceptionalCompletion(Throwable ex, CountedCompleter caller) {
ex.printStackTrace();
return true;
}
});
// All done for the TCP thread! Work continues in the FJ thread...
}
