+ @Global_define:
+ @Options:
+ LANG = CPP;
+ CLASS = mpmc_boundq_1_alt;
+ @DeclareStruct:
+ typedef struct elem {
+ t_element *pos;
+ boolean written;
+ thread_id_t tid;
+ call_id_t id;
+ } elem;
+ @DeclareVar:
+ spec_list *list;
+ id_tag_t *tag;
+ @InitVar:
+ list = new_spec_list();
+ tag = new_id_tag();
+ @DefineFunc:
+ elem* new_elem(t_element *pos, call_id_t id, thread_id_t tid) {
+ elem *e = (elem*) MODEL_MALLOC(sizeof(elem));
+ e->pos = pos;
+ e->written = false;
+ e->id = id;
+ e->tid = tid;
+ }
+ @DefineFunc:
+ elem* get_elem_by_pos(t_element *pos) {
+ for (int i = 0; i < size(list); i++) {
+ elem *e = (elem*) elem_at_index(list, i);
+ if (e->pos == pos) {
+ return e;
+ }
+ }
+ return NULL;
+ }
+ @DefineFunc:
+ elem* get_elem_by_tid(thread_id_t tid) {
+ for (int i = 0; i < size(list); i++) {
+ elem *e = (elem*) elem_at_index(list, i);
+ if (e->tid== tid) {
+ return e;
+ }
+ }
+ return NULL;
+ }
+ @DefineFunc:
+ int elem_idx_by_pos(t_element *pos) {
+ for (int i = 0; i < size(list); i++) {
+ elem *existing = (elem*) elem_at_index(list, i);
+ if (pos == existing->pos) {
+ return i;
+ }
+ }
+ return -1;
+ }
+ @DefineFunc:
+ int elem_idx_by_tid(thread_id_t tid) {
+ for (int i = 0; i < size(list); i++) {
+ elem *existing = (elem*) elem_at_index(list, i);
+ if (tid == existing->tid) {
+ return i;
+ }
+ }
+ return -1;
+ }
+ @DefineFunc:
+ call_id_t prepare_id() {
+ return get_and_inc(tag);
+ }
+ @DefineFunc:
+ bool prepare_check(t_element *pos, thread_id_t tid) {
+ elem *e = get_elem_by_tid(tid);
+ return NULL == e;
+ }
+ @DefineFunc:
+ void prepare(call_id_t id, t_element *pos, thread_id_t tid) {
+ call_id_t id = get_and_inc(tag);
+ elem *e = new_elem(pos, id, tid);
+ push_back(list, e);
+ }
+ @DefineFunc:
+ call_id_t publish_id(thread_id_t tid) {
+ elem *e = get_elem_by_tid(tid);
+ if (NULL == e)
+ return DEFAULT_CALL_ID;
+ return e->id;
+ }
+ @DefineFunc:
+ bool publish_check(thread_id_t tid) {
+ elem *e = get_elem_by_tid(tid);
+ if (NULL == e)
+ return false;
+ return e->written;
+ }
+ @DefineFunc:
+ void publish(thread_id_t tid) {
+ elem *e = get_elem_by_tid(tid);
+ e->written = true;
+ }
+ @DefineFunc:
+ call_id_t fetch_id(t_element *pos) {
+ elem *e = get_elem_by_pos(pos);
+ if (NULL == e)
+ return DEFAULT_CALL_ID;
+ return e->id;
+ }
+ @DefineFunc:
+ bool fetch_check(t_element *pos) {
+ int idx = elem_idx_by_pos(pos);
+ if (idx == -1)
+ return false;
+ else
+ return true;
+ }
+ @DefineFunc:
+ void fetch(t_element *pos) {
+ int idx = elem_idx_by_pos(pos);
+ if (idx == -1)
+ return;
+ remove_at_index(list, idx);
+ }
+ @DefineFunc:
+ bool consume_check(thread_id_t tid) {
+ elem *e = get_elem_by_tid(tid);
+ if (NULL == e)
+ return false;
+ return e->written;
+ }
+ @DefineFunc:
+ call_id_t consume_id(thread_id_t tid) {
+ elem *e = get_elem_by_tid(tid);
+ if (NULL == e)
+ return DEFAULT_CALL_ID;
+ return e->id;
+ }
+ @DefineFunc:
+ void consume(thread_id_t tid) {
+ int idx = elem_idx_by_tid(tid);
+ if (idx == -1)
+ return;
+ remove_at_index(list, idx);
+ }
+ @Happens_before:
+ Prepare -> Fetch
+ Publish -> Consume
+ @End