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                 @Cleanup:
  42                         if (__deque)
  43                                 free_spec_list(__deque);
  44                         if (tag)
  45                                 free_id_tag();
  46         @DefineFunc:
  47             tag_elem_t* new_tag_elem(call_id_t id, int data) {
  48                 tag_elem_t *e = (tag_elem_t*) CMODEL_MALLOC(sizeof(tag_elem_t));
  49                 e->id = id;
  50                 e->data = data;
  51                 return e;
  52             }
  53         @DefineFunc:
  54             call_id_t get_id(void *wrapper) {
  55                                 tag_elem_t *res = (tag_elem_t*) wrapper;
  56                                 if (res == NULL) {
  57                                         //model_print("wrong id here\n");
  58                                         return 0;
  59                                 }
  60                 return res->id;
  61             }
  62         @DefineFunc:
  63             int get_data(void *wrapper) {
  64                                 tag_elem_t *res = (tag_elem_t*) wrapper;
  65                 return res->data;
  66             }
  67     @Happens_before:
  68         Push -> Steal
  69                 Push -> Take
  70     @End
  71 */
  72
  73
  74 Deque * create();
  75 void resize(Deque *q);
  76
  77 /**
  78     @Begin
  79     @Interface: Take
  80     //@Commit_point_set: Take_Read_Bottom | Take_CAS_Top | Take_Additional_Point
  81     @Commit_point_set: Take_Read_Bottom | Take_Additional_Point
  82     @ID: __RET__ == EMPTY ? DEFAULT_CALL_ID : get_id(back(__deque))
  83     @Action:
  84         int _Old_Val = EMPTY;
  85                 if (__RET__ != EMPTY) {
  86                         if (size(__deque) > 0) {
  87                                 _Old_Val = get_data(back(__deque));
  88                         pop_back(__deque);
  89                         }
  90                 }
  91     @Post_check:
  92         _Old_Val == __RET__
  93     @End
  94 */
  95 int take(Deque *q);
  96
  97 /**
  98     @Begin
  99     @Interface: Push
 100     @Commit_point_set: Push_Update_Bottom
 101     @ID: get_and_inc(tag);
 102     @Action:
 103         tag_elem_t *elem = new_tag_elem(__ID__, x);
 104         push_back(__deque, elem);
 105     @End
 106 */
 107 void push(Deque *q, int x);
 108
 109 /**
 110     @Begin
 111     @Interface: Steal
 112     //@Commit_point_set: Steal_Read_Bottom | Steal_CAS_Top | Steal_Additional_Point
 113     @Commit_point_set: Steal_Read_Bottom | Steal_Additional_Point
 114     @ID: (__RET__ == EMPTY || __RET__ == ABORT) ? DEFAULT_CALL_ID : get_id(front(__deque))
 115     @Action:
 116         int _Old_Val = EMPTY;
 117                 if (__RET__ != EMPTY && __RET__ != ABORT) {
 118                         if (size(__deque) > 0) {
 119                                 _Old_Val = get_data(front(__deque));
 120                                 pop_front(__deque);
 121                         }
 122                 }
 123     @Post_check:
 124         _Old_Val == __RET__ || __RET__ == EMPTY || __RET__ == ABORT
 125     @End
 126 */
 127 int steal(Deque *q);
 128
 129 #endif