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                         model_print("init_list\n");
  41             tag = new_id_tag(); // Beginning of available id
  42                 @Cleanup:
  43                         if (__deque) {
  44                                 //free_spec_list(__deque);
  45                                 model_print("free_list\n");
  46                         }
  47                         if (tag)
  48                                 free_id_tag(tag);
  49         @DefineFunc:
  50             tag_elem_t* new_tag_elem(call_id_t id, int data) {
  51                 tag_elem_t *e = (tag_elem_t*) CMODEL_MALLOC(sizeof(tag_elem_t));
  52                 e->id = id;
  53                 e->data = data;
  54                 return e;
  55             }
  56         @DefineFunc:
  57             call_id_t get_id(void *wrapper) {
  58                                 tag_elem_t *res = (tag_elem_t*) wrapper;
  59                                 if (res == NULL) {
  60                                         //model_print("wrong id here\n");
  61                                         return 0;
  62                                 }
  63                 return res->id;
  64             }
  65         @DefineFunc:
  66             int get_data(void *wrapper) {
  67                                 tag_elem_t *res = (tag_elem_t*) wrapper;
  68                 return res->data;
  69             }
  70     @Happens_before:
  71         Push -> Steal
  72                 Push -> Take
  73     @End
  74 */
  75
  76
  77 Deque * create();
  78 void resize(Deque *q);
  79
  80 /**
  81     @Begin
  82     @Interface: Take
  83     //@Commit_point_set: Take_Read_Bottom | Take_CAS_Top | Take_Additional_Point
  84     @Commit_point_set: Take_Read_Bottom | Take_Additional_Point
  85     @ID: __RET__ == EMPTY ? DEFAULT_CALL_ID : get_id(back(__deque))
  86     @Action:
  87         int _Old_Val = EMPTY;
  88                 if (__RET__ != EMPTY) {
  89                         if (size(__deque) > 0) {
  90                                 _Old_Val = get_data(back(__deque));
  91                         pop_back(__deque);
  92                         }
  93                 }
  94     @Post_check:
  95         _Old_Val == __RET__
  96     @End
  97 */
  98 int take(Deque *q);
  99
 100 /**
 101     @Begin
 102     @Interface: Push
 103     @Commit_point_set: Push_Update_Bottom
 104     @ID: get_and_inc(tag);
 105     @Action:
 106         tag_elem_t *elem = new_tag_elem(__ID__, x);
 107         push_back(__deque, elem);
 108     @End
 109 */
 110 void push(Deque *q, int x);
 111
 112 /**
 113     @Begin
 114     @Interface: Steal
 115     //@Commit_point_set: Steal_Read_Bottom | Steal_CAS_Top | Steal_Additional_Point
 116     @Commit_point_set: Steal_Read_Bottom | Steal_Additional_Point
 117     @ID: (__RET__ == EMPTY || __RET__ == ABORT) ? DEFAULT_CALL_ID : get_id(front(__deque))
 118     @Action:
 119         int _Old_Val = EMPTY;
 120                 if (__RET__ != EMPTY && __RET__ != ABORT) {
 121                         if (size(__deque) > 0) {
 122                                 _Old_Val = get_data(front(__deque));
 123                                 pop_front(__deque);
 124                         }
 125                 }
 126     @Post_check:
 127         _Old_Val == __RET__ || __RET__ == EMPTY || __RET__ == ABORT
 128     @End
 129 */
 130 int steal(Deque *q);
 131
 132 #endif