int main (int argc, char *argv[])
{
int write_character = -1;
g_prog_mode = PRG_SENDER_MODE;
/*check parameters */
if ((buffer_size = get_buffer_size(argc, argv)) == RETURN_ERROR)
{
return EXIT_FAILURE;
}
/*create semaphore and ringbuffer*/
if (create_environment() == RETURN_ERROR)
{
return EXIT_FAILURE;
}
/*write ringbuffer*/
do
{
/*read stdin input*/
write_character = fgetc(stdin);
/*decrement semaphore*/
if (my_sem_wait() == RETURN_ERROR)
{
return EXIT_FAILURE;
}
/*write ringbuffer*/
write_char_to_buffer(write_character);
/*increment semaphore*/
if (my_sem_post() == RETURN_ERROR)
{
return EXIT_FAILURE;
}
} while (write_character != EOF);
/*check for errors in input of stdin*/
if (ferror(stdin))
{
fprintf(stderr, "%s: %s%s\n", g_program_name, "Error while reading input from \"stdin\".", strerror(errno));
destroy_environment(PRG_ERROR);
return EXIT_FAILURE;
}
/*destroy semaphore and ringbuffer*/
if (destroy_environment(PRG_SUCCESS) == RETURN_ERROR)
{
return EXIT_FAILURE;
}
else
{
return EXIT_SUCCESS;
}
}
/* Run a simulation, using the specified environment file. */
static void
run_one_simulation (struct dirent *env_file)
{
if (! open_log_file (env_file->d_name))
return;
LOG ((LOG_SCREEN | LOG_FILE), "*** Starting simulation %s ***", env_file->d_name);
/* Parse the environment file. */
if (! initialize_from_env_file (env_file))
return;
/* Create all agents. */
if (! spawn_all_agents ())
return;
for (env.current_time = 0;
env.current_time < env.simulation_length;
env.current_time++)
{
LOG (LOG_FILE, " ");
LOG ((LOG_SCREEN | LOG_FILE), "Starting Turn %u", env.current_time);
LOG (LOG_FILE, " ");
log_map ();
LOG (LOG_FILE, " ");
run_one_turn ();
if (env.alive_agents == NULL)
{
LOG ((LOG_SCREEN | LOG_FILE), " ** All agents have died -- aborting simulation");
break;
}
}
/* Clean up. */
summarize_results ();
destroy_all_agents ();
destroy_agent_list (&env.alive_agents);
destroy_all_predators ();
destroy_environment ();
LOG ((LOG_SCREEN | LOG_FILE), "*** End of simulation %s ***\n", env_file->d_name);
close_log_file ();
}