source: doc/theses/colby_parsons_MMAth/benchmarks/actors/ucpp/uC++Repeat.cc @ 5adf4f4

#include <string>
using namespace std;
#include <uActor.h>
#include <chrono>
using namespace chrono;
#include <iostream>

struct IntMsg : public uActor::SenderMsg { int val; };
struct CharMsg : public uActor::SenderMsg { char val; };

size_t Messages = 100'000, Processors = 4, QScale = 256, Times = 10;
time_point<steady_clock> starttime;

_Actor Server {
        Allocation receive( uActor::Message & msg ) {
                Case( IntMsg, msg ) { msg_d->val = 7; *msg_d->sender() | msg; }
                else Case( CharMsg, msg ) { msg_d->val = 'x'; *msg_d->sender() | msg; }
                else Case( StopMsg, msg ) { return Finished; }
                return Nodelete;                                                                // reuse actor
        }
};

Server * servers;

_Actor Client {
        IntMsg * intmsg;
        CharMsg * charmsg;
        size_t results = 0, times = 0;

        Allocation reset() {
                times += 1;
                if ( times == Times ) {
                        for ( unsigned int i = 0; i < Messages; i += 1 ) {
                                servers[i] | uActor::stopMsg;
                        } // for
                        return Finished;
                }
                results = 0;
                *this | uActor::startMsg;                                               // restart experiment
                return Nodelete;
        }

        Allocation receive( uActor::Message & msg ) {           // receive callback messages
                Case( IntMsg, msg ) results += 1;
                else Case( CharMsg, msg ) results += 1;
                else Case( StartMsg, msg ) {
                        for ( size_t i = 0; i < Messages; i += 1 ) { // send out work
                                servers[i] | intmsg[i];                                 // tell send
                                servers[i] | charmsg[i];
                        }
                }
                if ( results == 2 * Messages ) return reset();  // all messages handled ?
                return Nodelete;                                                                // reuse actor
        }
  public:
        Client() {
                intmsg = new IntMsg[Messages];
                charmsg = new CharMsg[Messages];
        }
        ~Client() {
                delete [] charmsg;
                delete [] intmsg;
        }
};

int main( int argc, char * argv[] ) {
        switch ( argc ) {
          case 5:
                if ( strcmp( argv[4], "d" ) != 0 ) {                    // default ?
                        QScale = stoi( argv[4] );
                        if ( QScale < 1 ) goto Usage;
                } // if
      case 4:
                if ( strcmp( argv[3], "d" ) != 0 ) {                    // default ?
                        Times = stoi( argv[3] );
                        if ( Times < 1 ) goto Usage;
                } // if
          case 3:
                if ( strcmp( argv[2], "d" ) != 0 ) {                    // default ?
                        Processors = stoi( argv[2] );
                        if ( Processors < 1 ) goto Usage;
                } // if
          case 2:
                if ( strcmp( argv[1], "d" ) != 0 ) {                    // default ?
                        Messages = stoi( argv[1] );
                        if ( Messages < 1 ) goto Usage;
                } // if
          case 1:                                                                                       // use defaults
                break;
          default:
          Usage:
                cerr << "Usage: " << argv[0]
                         << ") ] [ messages (> 0) | 'd' (default " << Messages
                         << ") ] [ processors (> 0) | 'd' (default " << Processors
             << ") ] [ Times (> 0) | 'd' (default " << Times
                         << ") ] [ qscale (> 0) | 'd' (default " << QScale
                         << ") ]" << endl;
                exit( EXIT_FAILURE );
        } // switch

        uExecutor executor( Processors, Processors, Processors == 1 ? 1 : Processors * QScale, true, -1 );
        time_point<steady_clock> starttime = steady_clock::now();
    uActor::start( &executor );                                                 // start actor system
        servers = new Server[Messages];
        Client client;
        client | uActor::startMsg;                                                      // start actors
        uActor::stop();                                                                         // wait for all actors to terminate
        cout << (steady_clock::now() - starttime).count() / 1'000'000'000.0 << endl;
        delete [] servers;
}