// This is the final process called by main()
// It is responsible for:
// * Receiving and executing commands from the java GUI
// * Killing off all processes when exiting the application
void uicommand_process(void) {
int i;
int current_person_id = 0;
char message[SI_UI_MAX_MESSAGE_SIZE];
int pid;
while(1) {
// Read a message from the GUI
si_ui_receive(message);
if(!strcmp(message, "new")) {
// TODO:
// * Check that we don't create too many persons
// * fork and create a new person process (and
// record the new pid in person_pid[])
if (current_person_id + 1 < MAX_N_PERSONS) {
pid = fork();
current_person_id++;
if (!pid) {
person_process(current_person_id);
} else {
person_pid[current_person_id] = pid;
}
}
} else if (!strncmp(message, "test", 4)) {
switch ((int) (message[5] - '0')) {
case 0:
for (i=0; i<MAX_N_PERSONS; i++) {
if (current_person_id + 1 < MAX_N_PERSONS) {
pid = fork();
current_person_id++;
if (!pid) {
person_process(current_person_id);
} else {
person_pid[current_person_id] = pid;
}
}
}
}
} else if(!strcmp(message, "exit")) {
// The code below sends the SIGINT signal to
// all processes involved in this application
// except for the uicommand process itself
// (which is exited by calling exit())
kill(uidraw_pid, SIGINT);
kill(lift_pid, SIGINT);
kill(liftmove_pid, SIGINT);
kill(guard_pid, SIGINT);
for(i=0; i < MAX_N_PERSONS; i++) {
if(person_pid[i] > 0) {
kill(person_pid[i], SIGINT);
}
}
exit(0);
}
}
}
int main(int argc, char **argv)
{
message_init();
lift_pid = fork();
if(!lift_pid) {
lift_process();
}
liftmove_pid = fork();
if(!liftmove_pid){
liftmove_process();
}
int current_person_id = 0;
int j;
for(j = 0; j < MAX_N_PERSONS; j++){
pid_t tmp_pid = fork();
if (tmp_pid == 0){
person_process(current_person_id);
} else{
person_pid[current_person_id] = tmp_pid;
current_person_id ++;
}
}
result_process();
return 0;
}
int main(int argc, char **argv) {
int i;
int current_person_id = 0;
int pid;
printf("Length of time_msg: %lld \n", sizeof(struct long_time_msg));
message_init();
si_ui_init(); // Initialize user interface. (Must be done here!)
lift_pid = fork();
if(!lift_pid) {
lift_process();
}
uidraw_pid = fork();
if(!uidraw_pid) {
uidraw_process();
}
liftmove_pid = fork();
if(!liftmove_pid) {
liftmove_process();
}
guard_pid = fork();
if(!guard_pid) {
file_guard_process();
}
for (i=0; i<MAX_N_PERSONS; i++) {
if (current_person_id < MAX_N_PERSONS) {
pid = fork();
if (!pid) {
person_process(current_person_id);
} else {
person_pid[current_person_id++] = pid;
}
}
}
uicommand_process();
return 0;
}
