/**
* Initializes a NodePtr and stores a JobPtr in it.
* @param data JobPtr represented by the new NodePtr
* @return New NodePtr
*/
NodePtr createNode(JobPtr data)
{
NodePtr newNode = (NodePtr) buddy_malloc (sizeof(Node));
newNode->next = NULL;
newNode->prev = NULL;
newNode->data = data;
return newNode;
}
/**
* Creates a ListPtr and returns it
* @returns New ListPtr
*/
ListPtr createList()
{
ListPtr list;
list = (ListPtr) buddy_malloc(sizeof(List));
list->size = 0;
list->head = NULL;
list->tail = NULL;
return list;
}
int main(int argc, char **argv)
{
if(isArgumentForShowingVersion(argv)) showVersionAndExit();
char *buf;
char *bufCopy;
pid_t pid = getpid();
pid_t backgroundJob;
int status = 0;
char *prompt = getPrompt();
int bg;
int jobNumber = 1;
int counts;
int jumpSet = 0;
char *arguments[2048];
initialize();
printf("\n");
setPrompt(prompt);
while ((buf = readline(prompt))) {
if(strlen(buf) != 0) {
bufCopy = buddy_malloc((strlen(buf)+1)*sizeof(char));
strcpy(bufCopy, buf);
add_history(bufCopy);
}
else
{
printFinishedJobs(jobList);
free(buf);
continue;
}
free(buf);
if(isCommandNotEmpty(bufCopy)) bg = isBackgroundCommand(bufCopy);
getArgument(arguments, bufCopy, &counts);
if(isExitCommand(bufCopy)){
buddy_free(bufCopy);
freeList(jobList);
if(arguments != NULL){
freeArguments(counts, arguments, NULL);
}
exit(0);
}
if(isCdCommand(bufCopy, arguments)){
changeDir(arguments);
freeArguments(counts, arguments, bufCopy);
}
else if(isJobsCommand(bufCopy)) {
printList(jobList);
freeArguments(counts, arguments, bufCopy);
}
else if(isFgCommand(bufCopy, arguments)){
fg(arguments, jobList, counts, bufCopy);
}
else if(isBgCommand(bufCopy, arguments)){
bgS(arguments, jobList, counts, bufCopy);
}
else if (isCommandNotEmpty(bufCopy))
{
if(bg == 1)
{
backgroundJob = fork();
if(backgroundJob == 0) {
ignoreSignals();
runCommand(arguments, bufCopy);
}
else{
NodePtr n = createAndSetNode(&jobNumber, backgroundJob, bufCopy, bg);
recordCommand(n, jobNumber, bg);
freeArguments(counts, arguments, bufCopy);
}
}
else
{
pid = fork();
if(pid == 0){
runCommand(arguments, bufCopy);
}
else {
NodePtr n = createAndSetNode(&jobNumber, pid, bufCopy, bg);
ignoreSignals();
if((waitpid(pid,&status,WUNTRACED))<0) err_sys("waitpid error");
freeArguments(counts, arguments, bufCopy);
restoreSignalsAndDetermineStatus(status, jobList, n);
}
}
}
else
{
freeArguments(counts, arguments, bufCopy);
}
if(jumpSet == 0){
sigsetjmp(env, 1);
jumpSet = 1;
}
continue;
}
if(buf == NULL) printf("\n");
exit(0);
}
void runRandomTests(int count, unsigned int seed, int n, ListPtr list)
{
int i;
int test;
NodePtr node;
JobPtr job;
int *tests;
tests = (int *) buddy_malloc(sizeof(int)*NUM_TESTS);
for (i=0; i<NUM_TESTS; i++)
tests[i]=0;
srandom(seed);
for (i=0; i<count; i++) {
printf("\rRunning test #%d", i);
test = (int) (NUM_TESTS * (double) rand()/RAND_MAX);
tests[test]++;
switch (test) {
case 0:
if (DEBUG > 1) fprintf(stderr,"addAtFront\n");
n++;
job = createJob(n, "some info", n);
node = createNode(job);
addAtFront(list, node);
break;
case 1:
if (DEBUG > 1) fprintf(stderr,"addAtRear\n");
n++;
job = createJob(n, "some info", n);
node = createNode(job);
addAtRear(list, node);
break;
case 2:
if (DEBUG > 1) fprintf(stderr,"removeFront\n");
node = removeFront(list);
freeNode(node);
break;
case 3:
if (DEBUG > 1) fprintf(stderr,"removeRear\n");
node = removeRear(list);
freeNode(node);
break;
case 4:
if (DEBUG > 1) fprintf(stderr,"removeNode\n");
node = removeNode(list, search(list, i));
freeNode(node);
break;
case 5:
if (DEBUG > 1) fprintf(stderr,"reverseList\n");
reverseList(list);
case 6:
if (DEBUG > 1) fprintf(stderr,"searchList\n");
node = search(list, i);
break;
default:
break;
}
}
printf("\n");
print_stats(tests);
buddy_free(tests);
}
int main(int argc, char *argv[])
{
int i;
char ch;
int count;
unsigned long int seed;
size_t size;
struct element x[MAX_ITEMS];
int loc;
if (argc < 2) {
fprintf(stderr, "Usage: %s <num of tests> [random seed] [silent|terse|verbose|interactive]\n", argv[0]);
exit(1);
}
count = atol(argv[1]);
if (argc == 3) {
seed = atol(argv[2]);
srandom(seed);
}
if (argc == 4) {
if (argv[3][0] == 's') {
verbosity = SILENT;
} else if (argv[3][0] == 't') {
verbosity = TERSE;
} else if (argv[3][0] == 'v') {
verbosity = VERBOSE;
} else if (argv[3][0] == 'i') {
verbosity = INTERACTIVE;
setvbuf(stdin, NULL, _IONBF, 0);
}
}
if (verbosity > TERSE)
system("clear");
buddy_init(0);
if (verbosity > TERSE) {
printf("Buddy system lists after initialization.\n");
printBuddyLists();
}
if (verbosity == INTERACTIVE) {
ch = getchar();
system("clear");
if (ch == 'q')
exit(0);
}
for (i =0; i < MAX_ITEMS; i++) {
x[i].ptr = NULL;
x[i].size = 0;
}
for (i=0; i < count; i++) {
//printf("GL ");
loc = (i) % MAX_ITEMS; // where to put in our table
//printf("Trying(%d): ", i);
if (x[loc].ptr) {
// printf("loc=%d ptr=%p size=%lu", loc, x[loc].ptr, x[loc].size);
buddy_free(x[loc].ptr);
// printf(" Done");
if (verbosity > SILENT)
printf("buddy_freed address %p of size %lu in x[%d]\n", x[loc].ptr, x[loc].size, loc);
if (verbosity > TERSE) printBuddyLists();
x[loc].ptr = NULL;
x[loc].size = 0;
// printf(" IfComplete ");
} else {
size = random() % MAX_REQUEST + 1; // how big a request
// printf("loc=%d ptr=%p size=%lu", loc, x[loc].ptr, size);
x[loc].ptr = (char *) buddy_malloc(size*sizeof(char));
// printf(" Done");
if (x[loc].ptr == NULL) {
perror("TestBuddy:");
exit(1);
}
x[loc].size = size*sizeof(char);
memset(x[loc].ptr, '1', x[loc].size);
if (verbosity > SILENT)
printf("buddy_malloced %lu bytes and stored address %p at x[%d]\n", size*sizeof(char), x[loc].ptr, loc);
if (verbosity > TERSE) printBuddyLists();
// printf(" IfComplete ");
}
//printf ("V");
if (verbosity == INTERACTIVE) {
ch = getchar();
system("clear");
if (ch == 'q')
exit(0);
}
//printf("F\n");
}
#ifdef STATS
printBuddySystemStats();
#endif
exit(0);
}