#include <unrelacy.h>
#include <common.h>
+#include <spec_lib.h>
+#include <stdlib.h>
+#include <cdsannotate.h>
+#include <specannotation.h>
+#include <model_memory.h>
+
/**
@Begin
@Class_begin
} elem;
@DeclareVar:
spec_list *list;
- id_tag_t *tag;
+ //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;
- e->fetch_tid = -1;
- }
- @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:
- void show_list() {
- //model_print("Status:\n");
- for (int i = 0; i < size(list); i++) {
- elem *e = (elem*) elem_at_index(list, i);
- //model_print("%d: pos %d, written %d, tid %d, fetch_tid %d, call_id %d\n", i, e->pos, e->written, e->tid, e->fetch_tid, e->id);
- }
- }
- @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:
- elem* get_elem_by_fetch_tid(thread_id_t fetch_tid) {
- for (int i = 0; i < size(list); i++) {
- elem *e = (elem*) elem_at_index(list, i);
- if (e->fetch_tid== fetch_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:
- int elem_idx_by_fetch_tid(thread_id_t fetch_tid) {
- for (int i = 0; i < size(list); i++) {
- elem *existing = (elem*) elem_at_index(list, i);
- if (fetch_tid == existing->fetch_tid) {
- return i;
- }
- }
- return -1;
- }
- @DefineFunc:
- int elem_num(t_element *pos) {
- int cnt = 0;
- for (int i = 0; i < size(list); i++) {
- elem *existing = (elem*) elem_at_index(list, i);
- if (pos == existing->pos) {
- cnt++;
- }
- }
- return cnt;
- }
- @DefineFunc:
- call_id_t prepare_id() {
- call_id_t res = get_and_inc(tag);
- //model_print("prepare_id: %d\n", res);
- return res;
- }
- @DefineFunc:
- bool prepare_check(t_element *pos, thread_id_t tid) {
- show_list();
- elem *e = get_elem_by_pos(pos);
- //model_print("prepare_check: e %d\n", e);
- return NULL == e;
- }
- @DefineFunc:
- void prepare(call_id_t id, t_element *pos, thread_id_t tid) {
- //model_print("prepare: id %d, pos %d, tid %d\n", id, pos, tid);
- 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);
- //model_print("publish_id: id %d\n", e == NULL ? 0 : e->id);
- if (NULL == e)
- return DEFAULT_CALL_ID;
- return e->id;
- }
- @DefineFunc:
- bool publish_check(thread_id_t tid) {
- show_list();
- elem *e = get_elem_by_tid(tid);
- //model_print("publish_check: tid %d\n", tid);
- if (NULL == e)
- return false;
- if (elem_num(e->pos) > 1)
- return false;
- return !e->written;
- }
- @DefineFunc:
- void publish(thread_id_t tid) {
- //model_print("publish: tid %d\n", 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);
- //model_print("fetch_id: id %d\n", e == NULL ? 0 : e->id);
- if (NULL == e)
- return DEFAULT_CALL_ID;
- return e->id;
- }
- @DefineFunc:
- bool fetch_check(t_element *pos) {
- show_list();
- if (pos == NULL) return true;
- elem *e = get_elem_by_pos(pos);
- //model_print("fetch_check: pos %d, e %d\n", pos, e);
- if (e == NULL) return false;
- if (elem_num(e->pos) > 1)
- return false;
- return true;
- }
- @DefineFunc:
- void fetch(t_element *pos, thread_id_t tid) {
- if (pos == NULL) return;
- elem *e = (elem*) get_elem_by_pos(pos);
- //model_print("fetch: pos %d, tid %d\n", pos, tid);
- // Remember the thread that fetches the position
- e->fetch_tid = tid;
- }
- @DefineFunc:
- bool consume_check(thread_id_t tid) {
- show_list();
- elem *e = get_elem_by_fetch_tid(tid);
- //model_print("consume_check: tid %d, e %d\n", tid, e);
- if (NULL == e)
- return false;
- if (elem_num(e->pos) > 1)
- return false;
- return e->written;
- }
- @DefineFunc:
- call_id_t consume_id(thread_id_t tid) {
- elem *e = get_elem_by_fetch_tid(tid);
- //model_print("consume_id: id %d\n", e == NULL ? 0 : e->id);
- if (NULL == e)
- return DEFAULT_CALL_ID;
- return e->id;
- }
- @DefineFunc:
- void consume(thread_id_t tid) {
- //model_print("consume: tid %d\n", tid);
- int idx = elem_idx_by_fetch_tid(tid);
- if (idx == -1)
- return;
- remove_at_index(list, idx);
- }
+ //tag = new_id_tag();
@Happens_before:
- Prepare -> Fetch
- Publish -> Consume
+ Publish -> Fetch
+ Consume -> Prepare
@End
*/
@Begin
@Interface: Fetch
@Commit_point_set: Fetch_Empty_Point | Fetch_Succ_Point
- @ID: fetch_id(__RET__)
- @Check:
- fetch_check(__RET__)
- @Action:
- fetch(__RET__, __TID__);
+ @ID: (call_id_t) __RET__
+ //@Check:
+ //__RET__ == NULL || has_elem(list, __RET__)
@End
*/
t_element * read_fetch() {
- unsigned int rdwr = m_rdwr.load(mo_acquire);
+ // Try this new weaker semantics
+ //unsigned int rdwr = m_rdwr.load(mo_acquire);
+ unsigned int rdwr = m_rdwr.load(mo_relaxed);
/**
@Begin
@Potential_commit_point_define: true
wr = rdwr & 0xFFFF;
if ( wr == rd ) { // empty
+
/**
@Begin
@Commit_point_define: true
@Label: Fetch_Empty_Point
@End
*/
+
return false;
}
@Begin
@Interface: Consume
@Commit_point_set: Consume_Point
- @ID: consume_id(__TID__)
- @Check:
- consume_check(__TID__)
- @Action:
- consume(__TID__);
+ @ID: (call_id_t) bin
+ //@Check:
+ // consume_check(__TID__)
+ //@Action:
+ //consume(__TID__);
@End
*/
- void read_consume() {
+ void read_consume(t_element *bin) {
m_read.fetch_add(1,mo_release);
/**
@Begin
@Begin
@Interface: Prepare
@Commit_point_set: Prepare_Full_Point | Prepare_Succ_Point
- @ID: prepare_id()
- @Check:
- prepare_check(__RET__, __TID__)
- @Action:
- prepare(__ID__, __RET__, __TID__);
+ @ID: (call_id_t) __RET__
+ //@Check:
+ //prepare_check(__RET__, __TID__)
+ //@Action:
+ //push_back(list, __RET__);
@End
*/
t_element * write_prepare() {
- unsigned int rdwr = m_rdwr.load(mo_acquire);
+ // Try weaker semantics
+ //unsigned int rdwr = m_rdwr.load(mo_acquire);
+ unsigned int rdwr = m_rdwr.load(mo_relaxed);
/**
@Begin
@Potential_commit_point_define: true
wr = rdwr & 0xFFFF;
if ( wr == ((rd + t_size)&0xFFFF) ) { // full
+
/**
@Begin
@Commit_point_define: true
@Begin
@Interface: Publish
@Commit_point_set: Publish_Point
- @ID: publish_id(__TID__)
- @Check:
- publish_check(__TID__)
- @Action:
- publish(__TID__);
+ @ID: (call_id_t) bin
+ //@Check:
+ //publish_check(__TID__)
+ //@Action:
+ //publish(__TID__);
@End
*/
- void write_publish()
+ void write_publish(t_element *bin)
{
m_written.fetch_add(1,mo_release);
/**
projects / cdsspec-compiler.git / blobdiff