#include <actor.hfa>
#include <fstream.hfa>
#include <stdlib.hfa>
#include <string.h>
#include <stdio.h>

// int Actors = 40000, Set = 100, Rounds = 100, Processors = 1, Batch = 1, BufSize = 10; // default values
int Actors = 1000, Set = 20, Rounds = 10, Processors = 1, Batch = 1, BufSize = 10; // other defaults for test to run in reasonable time

static int ids = 0;
struct d_actor { 
	inline actor;
	d_actor * gstart;
	int id, rounds, recs, sends;
};
void ?{}( d_actor & this ) with(this) {
	id = ids++;
	gstart = (&this + (id / Set * Set - id)); // remember group-start array-element
	rounds = Set * Rounds;	// send at least one message to each group member
	recs = 0;
	sends = 0;
}

struct d_msg { inline message; } shared_msg;

allocation receive( d_actor & this, d_msg & msg ) with( this ) {
	if ( recs == rounds ) return Finished;
	if ( recs % Batch == 0 ) {
		for ( i; Batch ) {
			gstart[sends % Set] | shared_msg;
			sends += 1;
		}
	}
	recs += 1;
	return Nodelete;
}

int main( int argc, char * argv[] ) {
	switch ( argc ) {
	  case 7:
		if ( strcmp( argv[6], "d" ) != 0 ) {			// default ?
			BufSize = ato( argv[6] );
			if ( BufSize < 0 ) fallthru default;
		} // if
	  case 6:
		if ( strcmp( argv[5], "d" ) != 0 ) {			// default ?
			Batch = ato( argv[5] );
			if ( Batch < 1 ) fallthru default;
		} // if
	  case 5:
		if ( strcmp( argv[4], "d" ) != 0 ) {			// default ?
			Processors = ato( argv[4] );
			if ( Processors < 1 ) fallthru default;
		} // if
	  case 4:
		if ( strcmp( argv[3], "d" ) != 0 ) {			// default ?
			Rounds = ato( argv[3] );
			if ( Rounds < 1 ) fallthru default;
		} // if
	  case 3:
		if ( strcmp( argv[2], "d" ) != 0 ) {			// default ?
			Set = ato( argv[2] );
			if ( Set < 1 ) fallthru default;
		} // if
	  case 2:
		if ( strcmp( argv[1], "d" ) != 0 ) {			// default ?
			Actors = ato( argv[1] );
			if ( Actors < 1 || Actors <= Set || Actors % Set != 0 ) fallthru default;
		} // if
	  case 1:											// use defaults
		break;
	  default:
		exit | "Usage: " | argv[0]
			 | " [ actors (> 0 && > set && actors % set == 0 ) | 'd' (default " | Actors
			 | ") ] [ set (> 0) | 'd' (default " | Set
			 | ") ] [ rounds (> 0) | 'd' (default " | Rounds
			 | ") ] [ processors (> 0) | 'd' (default " | Processors
			 | ") ] [ batch (> 0) | 'd' (default " | Batch
			 | ") ] [ buffer size (>= 0) | 'd' (default " | BufSize
			 | ") ]" ;
	} // switch

	executor e{ Processors, Processors, Processors == 1 ? 1 : Processors * 512, true };

	sout | "starting";
	actor_start( e );
	sout | "started";
	d_actor actors[ Actors ];
	for ( i; Actors ) {
		actors[i] | shared_msg;
	} // for
	sout | "stopping";
	actor_stop();
	sout | "stopped";
}