3 mcpileq_t mcqueue; //Global queue
5 void mcpileqInit(void) {
6 /* Initialize machine queue that containing prefetch oids and offset values sorted by remote machineid */
7 mcqueue.front = mcqueue.rear = NULL;
8 //Intiliaze and set machile pile queue's mutex attribute
9 pthread_mutexattr_init(&mcqueue.qlockattr);
10 pthread_mutexattr_settype(&mcqueue.qlockattr, PTHREAD_MUTEX_RECURSIVE_NP);
11 pthread_mutex_init(&mcqueue.qlock,&mcqueue.qlockattr);
12 pthread_cond_init(&mcqueue.qcond, NULL);
15 /* Insert to the rear of machine pile queue */
16 void mcpileenqueue(prefetchpile_t *node, prefetchpile_t *tail) {
17 if(mcqueue.front == NULL) {
21 mcqueue.rear->next = node;
26 /* Return the node pointed to by the front ptr of the queue */
27 prefetchpile_t *mcpiledequeue(void) {
28 prefetchpile_t *retnode=mcqueue.front;
30 printf("Machine pile queue empty: Underflow %s %d\n", __FILE__, __LINE__);
33 mcqueue.front = retnode->next;
34 if (mcqueue.front == NULL)
41 void mcpiledisplay() {
44 prefetchpile_t *tmp = mcqueue.front;
46 printf("Remote machine id = %d\n", tmp->mid);
51 /* Delete prefetchpile_t and everything it points to */
52 void mcdealloc(prefetchpile_t *node) {
53 prefetchpile_t *prefetchpile_ptr;
54 prefetchpile_t *prefetchpile_next_ptr;
55 objpile_t *objpile_ptr;
56 objpile_t *objpile_next_ptr;
58 prefetchpile_ptr = node;
60 while (prefetchpile_ptr != NULL) {
61 prefetchpile_next_ptr = prefetchpile_ptr;
62 while(prefetchpile_ptr->objpiles != NULL) {
63 //offsets aren't owned by us, so we don't free them.
64 objpile_ptr = prefetchpile_ptr->objpiles;
65 prefetchpile_ptr->objpiles = objpile_ptr->next;
68 prefetchpile_ptr = prefetchpile_next_ptr->next;
69 free(prefetchpile_next_ptr);