benchmark/chase-lev-deque-bugfix/deque.h

   1 #ifndef DEQUE_H
   2 #define DEQUE_H
   3
   4 #include <spec_lib.h>
   5 #include <stdlib.h>
   6 #include <cdsannotate.h>
   7 #include <specannotation.h>
   8 #include <model_memory.h>
   9 #include "common.h"
  10
  11 typedef struct {
  12         atomic_size_t size;
  13         atomic_int buffer[];
  14 } Array;
  15
  16 typedef struct {
  17         atomic_size_t top, bottom;
  18         atomic_uintptr_t array; /* Atomic(Array *) */
  19 } Deque;
  20
  21 #define EMPTY 0xffffffff
  22 #define ABORT 0xfffffffe
  23
  24 /**
  25     @Begin
  26     @Options:
  27         LANG = C;
  28     @Global_define:
  29         @DeclareStruct:
  30         typedef struct tag_elem {
  31             call_id_t id;
  32             int data;
  33         } tag_elem_t;
  34
  35         @DeclareVar:
  36         spec_list *__deque;
  37         id_tag_t *tag;
  38         @InitVar:
  39             __deque= new_spec_list();
  40             tag = new_id_tag(); // Beginning of available id
  41         @DefineFunc:
  42             tag_elem_t* new_tag_elem(call_id_t id, int data) {
  43                 tag_elem_t *e = (tag_elem_t*) CMODEL_MALLOC(sizeof(tag_elem_t));
  44                 e->id = id;
  45                 e->data = data;
  46                 return e;
  47             }
  48         @DefineFunc:
  49             call_id_t get_id(void *wrapper) {
  50                                 tag_elem_t *res = (tag_elem_t*) wrapper;
  51                                 if (res == NULL) {
  52                                         //model_print("wrong id here\n");
  53                                         return 0;
  54                                 }
  55                 return res->id;
  56             }
  57         @DefineFunc:
  58             int get_data(void *wrapper) {
  59                                 tag_elem_t *res = (tag_elem_t*) wrapper;
  60                 return res->data;
  61             }
  62     @Happens_before:
  63         Push -> Steal
  64                 Push -> Take
  65     @End
  66 */
  67
  68
  69 Deque * create();
  70 void resize(Deque *q);
  71
  72 /**
  73     @Begin
  74     @Interface: Take
  75     //@Commit_point_set: Take_Read_Bottom | Take_CAS_Top | Take_Additional_Point
  76     @Commit_point_set: Take_Read_Bottom | Take_Additional_Point
  77     @ID: __RET__ == EMPTY ? DEFAULT_CALL_ID : get_id(back(__deque))
  78     @Action:
  79         int _Old_Val = EMPTY;
  80                 if (__RET__ != EMPTY) {
  81                         if (size(__deque) > 0) {
  82                                 _Old_Val = get_data(back(__deque));
  83                         pop_back(__deque);
  84                         }
  85                 }
  86     @Post_check:
  87         _Old_Val == __RET__
  88     @End
  89 */
  90 int take(Deque *q);
  91
  92 /**
  93     @Begin
  94     @Interface: Push
  95     @Commit_point_set: Push_Update_Bottom
  96     @ID: get_and_inc(tag);
  97     @Action:
  98         tag_elem_t *elem = new_tag_elem(__ID__, x);
  99         push_back(__deque, elem);
 100     @End
 101 */
 102 void push(Deque *q, int x);
 103
 104 /**
 105     @Begin
 106     @Interface: Steal
 107     //@Commit_point_set: Steal_Read_Bottom | Steal_CAS_Top | Steal_Additional_Point
 108     @Commit_point_set: Steal_Read_Bottom | Steal_Additional_Point
 109     @ID: (__RET__ == EMPTY || __RET__ == ABORT) ? DEFAULT_CALL_ID : get_id(front(__deque))
 110     @Action:
 111         int _Old_Val = EMPTY;
 112                 if (__RET__ != EMPTY && __RET__ != ABORT) {
 113                         if (size(__deque) > 0) {
 114                                 _Old_Val = get_data(front(__deque));
 115                                 pop_front(__deque);
 116                         }
 117                 }
 118     @Post_check:
 119         _Old_Val == __RET__ || __RET__ == EMPTY || __RET__ == ABORT
 120     @End
 121 */
 122 int steal(Deque *q);
 123
 124 #endif