Process Bancone {
	int nbomb = 0;
	long tick = 0, alarm = -1;
	bool butta = false;
	entry friggi_i(out int rimasti);
	entry friggi_f;
	entry servi_cliente_i;
	entry servi_cliente_f;
	entry scaduti;
	entry clock;
	entry wait_timer;
	entry set_timer (in long n);

	do
		[] nbomb == 0 or butta; accept friggi_i(out nrimasti);
            nrimasti = nbomb;

		[] ; accept friggi_f() ->
			nbomb = 30;
			alarm = tick + minuti(60);
			butta = false;

		[] nbomb > 0 and !butta; accept servi_cliente_i();

		[] ; accept servi_cliente_f() ->
			nbomb--;

		[] ; accept clock(); ->
			tick++;

		[] tick >= alarm and alarm != -1; accept wait_timer() ->
			butta = true;
			nbomb = 0; // errore
			alarm = -1;

		[] ; accept set_timer(in long n) ->
			alarm = tick + n;

		[] ; accept scaduti ->
			butta = true;
	od;
}

Process Mario {
    int nrimasti;
	while(true){
		call Bancone.friggi_i(nrimasti);
        if(nrimasti) < butta >;
		< friggi bomboloni >
		call Bancone.set_timer(60);
		call Bancone.friggi_f();
	}
}

Process Piero {
	while(true){
        < attendi cliente >
		call Bancone.servi_cliente_i();
		< servi cliente >
		call Bancone.servi_cliente_f();
	}
}

Process Rosa {
	while(true){
		call Bancone.wait_timer();
		call Bancone.butta();
	}
}

Process Clock {
	while(true){
		< hardware clock ticks >
		call Bancone.clock();
	}
}