void free_proclist(proc_node *p)
{
if ( p == NULL ) {
return;
} else {
free_proclist( p->next );
}
free(p);
}
int free_group()
{
int i;
printf("Freeing group...\n");
for ( i=0; i<MAX_NUM_OF_GROUPS; i++ ) {
free_proclist(bcastgroup[i].pproclist);
free_buflist(bcastgroup[i].pbuflist);
}
}
int main() {
/*DECLARATIONS*/
struct command *L[100];
char *cmdLine = calloc(100,sizeof(char)); //command line
int *groupD; //keep track of directives
char c;
int numLists = 0; //number of lists created
int listNum=0; //specific list to deal with
int i;
signal(SIGCHLD, bg_handler); //allow children to die
signal(SIGALRM, alarm_handler); //check efficiency
L[numLists] = (struct command *)calloc(1, sizeof(struct command));
initialize_list(L[numLists]);
printf("My Shell > ");
fflush(stdout);
while(1) {
c = getchar();
switch(c) {
case'\n':
if (cmdLine[0] == '\0') {
printf("My Shell > ");
}
else { /*execute command line*/
groupD = parse_cmdline(L[numLists], cmdLine);
if (groupD[0] == 0){
exec_cmdline(L[numLists]);
}
else {
/*directives*/
for (i=0; i<numLists+1; i++){
if (L[i]->group == groupD[1]){
directive(L[i], groupD[0]);
}
}
}
printf("My Shell > ");
numLists++;
L[numLists] = (struct command *)calloc(1, sizeof(struct command));
initialize_list(L[numLists]);
reset_cmdline(cmdLine);
}
break;
default:
strncat(cmdLine, &c, 1);
break;
}
}
for (i=0; i<numLists+1; i++)
free_proclist(L[i]);
free_listofproclist(L);
free(cmdLine);
return -1;
}