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      1 /*
      2   This file is part of drd, a thread error detector.
      3 
      4   Copyright (C) 2006-2012 Bart Van Assche <bvanassche (at) acm.org>.
      5 
      6   This program is free software; you can redistribute it and/or
      7   modify it under the terms of the GNU General Public License as
      8   published by the Free Software Foundation; either version 2 of the
      9   License, or (at your option) any later version.
     10 
     11   This program is distributed in the hope that it will be useful, but
     12   WITHOUT ANY WARRANTY; without even the implied warranty of
     13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14   General Public License for more details.
     15 
     16   You should have received a copy of the GNU General Public License
     17   along with this program; if not, write to the Free Software
     18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
     19   02111-1307, USA.
     20 
     21   The GNU General Public License is contained in the file COPYING.
     22 */
     23 
     24 
     25 /*
     26  * A bitmap is a data structure that contains information about which
     27  * addresses have been accessed for reading or writing within a given
     28  * segment.
     29  */
     30 
     31 
     32 #ifndef __PUB_DRD_BITMAP_H
     33 #define __PUB_DRD_BITMAP_H
     34 
     35 
     36 #include "drd_basics.h"      /* DRD_() */
     37 #include "pub_tool_basics.h" /* Addr, SizeT */
     38 #include "pub_tool_oset.h"   /* struct _OSet */
     39 
     40 
     41 /* Defines. */
     42 
     43 #define LHS_R (1<<0)
     44 #define LHS_W (1<<1)
     45 #define RHS_R (1<<2)
     46 #define RHS_W (1<<3)
     47 #define HAS_RACE(a) ((((a) & RHS_W) && ((a) & (LHS_R | LHS_W)))         \
     48                      || (((a) & LHS_W) && ((a) & (RHS_R | RHS_W))))
     49 
     50 
     51 /* Forward declarations. */
     52 
     53 struct bitmap;
     54 
     55 
     56 /* Datatype definitions. */
     57 
     58 typedef enum { eLoad, eStore, eStart, eEnd } BmAccessTypeT;
     59 
     60 struct bm_cache_elem
     61 {
     62    Addr            a1;
     63    struct bitmap2* bm2;
     64 };
     65 
     66 #define DRD_BITMAP_N_CACHE_ELEM 4
     67 
     68 /* Complete bitmap. */
     69 struct bitmap
     70 {
     71    struct bm_cache_elem cache[DRD_BITMAP_N_CACHE_ELEM];
     72    OSet*                oset;
     73 };
     74 
     75 
     76 /* Function declarations. */
     77 
     78 void DRD_(bm_module_init)(void);
     79 void DRD_(bm_module_cleanup)(void);
     80 struct bitmap* DRD_(bm_new)(void);
     81 void DRD_(bm_delete)(struct bitmap* const bm);
     82 void DRD_(bm_init)(struct bitmap* const bm);
     83 void DRD_(bm_cleanup)(struct bitmap* const bm);
     84 void DRD_(bm_access_range)(struct bitmap* const bm,
     85                            const Addr a1, const Addr a2,
     86                            const BmAccessTypeT access_type);
     87 void DRD_(bm_access_range_load)(struct bitmap* const bm,
     88                                 const Addr a1, const Addr a2);
     89 void DRD_(bm_access_load_1)(struct bitmap* const bm, const Addr a1);
     90 void DRD_(bm_access_load_2)(struct bitmap* const bm, const Addr a1);
     91 void DRD_(bm_access_load_4)(struct bitmap* const bm, const Addr a1);
     92 void DRD_(bm_access_load_8)(struct bitmap* const bm, const Addr a1);
     93 void DRD_(bm_access_range_store)(struct bitmap* const bm,
     94                                  const Addr a1, const Addr a2);
     95 void DRD_(bm_access_store_1)(struct bitmap* const bm, const Addr a1);
     96 void DRD_(bm_access_store_2)(struct bitmap* const bm, const Addr a1);
     97 void DRD_(bm_access_store_4)(struct bitmap* const bm, const Addr a1);
     98 void DRD_(bm_access_store_8)(struct bitmap* const bm, const Addr a1);
     99 Bool DRD_(bm_has)(struct bitmap* const bm,
    100                   const Addr a1, const Addr a2,
    101                   const BmAccessTypeT access_type);
    102 Bool DRD_(bm_has_any_load_g)(struct bitmap* const bm);
    103 Bool DRD_(bm_has_any_load)(struct bitmap* const bm,
    104                            const Addr a1, const Addr a2);
    105 Bool DRD_(bm_has_any_store)(struct bitmap* const bm,
    106                             const Addr a1, const Addr a2);
    107 Bool DRD_(bm_has_any_access)(struct bitmap* const bm,
    108                              const Addr a1, const Addr a2);
    109 Bool DRD_(bm_has_1)(struct bitmap* const bm,
    110                     const Addr address, const BmAccessTypeT access_type);
    111 void DRD_(bm_clear)(struct bitmap* const bm,
    112                     const Addr a1, const Addr a2);
    113 void DRD_(bm_clear_load)(struct bitmap* const bm,
    114                          const Addr a1, const Addr a2);
    115 void DRD_(bm_clear_store)(struct bitmap* const bm,
    116                           const Addr a1, const Addr a2);
    117 Bool DRD_(bm_test_and_clear)(struct bitmap* const bm,
    118                              const Addr a1, const Addr a2);
    119 Bool DRD_(bm_has_conflict_with)(struct bitmap* const bm,
    120                                 const Addr a1, const Addr a2,
    121                                 const BmAccessTypeT access_type);
    122 Bool DRD_(bm_load_1_has_conflict_with)(struct bitmap* const bm, const Addr a1);
    123 Bool DRD_(bm_load_2_has_conflict_with)(struct bitmap* const bm, const Addr a1);
    124 Bool DRD_(bm_load_4_has_conflict_with)(struct bitmap* const bm, const Addr a1);
    125 Bool DRD_(bm_load_8_has_conflict_with)(struct bitmap* const bm, const Addr a1);
    126 Bool DRD_(bm_load_has_conflict_with)(struct bitmap* const bm,
    127                                      const Addr a1, const Addr a2);
    128 Bool DRD_(bm_store_1_has_conflict_with)(struct bitmap* const bm,const Addr a1);
    129 Bool DRD_(bm_store_2_has_conflict_with)(struct bitmap* const bm,const Addr a1);
    130 Bool DRD_(bm_store_4_has_conflict_with)(struct bitmap* const bm,const Addr a1);
    131 Bool DRD_(bm_store_8_has_conflict_with)(struct bitmap* const bm,const Addr a1);
    132 Bool DRD_(bm_store_has_conflict_with)(struct bitmap* const bm,
    133                                       const Addr a1, const Addr a2);
    134 Bool DRD_(bm_equal)(struct bitmap* const lhs, struct bitmap* const rhs);
    135 void DRD_(bm_swap)(struct bitmap* const bm1, struct bitmap* const bm2);
    136 void DRD_(bm_merge2)(struct bitmap* const lhs, struct bitmap* const rhs);
    137 void DRD_(bm_unmark)(struct bitmap* bm);
    138 Bool DRD_(bm_is_marked)(struct bitmap* bm, const Addr a);
    139 void DRD_(bm_mark)(struct bitmap* bm1, struct bitmap* bm2);
    140 void DRD_(bm_clear_marked)(struct bitmap* bm);
    141 void DRD_(bm_merge2_marked)(struct bitmap* const lhs, struct bitmap* const rhs);
    142 void DRD_(bm_remove_cleared_marked)(struct bitmap* bm);
    143 int DRD_(bm_has_races)(struct bitmap* const bm1,
    144                        struct bitmap* const bm2);
    145 void DRD_(bm_report_races)(ThreadId const tid1, ThreadId const tid2,
    146                            struct bitmap* const bm1,
    147                            struct bitmap* const bm2);
    148 void DRD_(bm_print)(struct bitmap* bm);
    149 ULong DRD_(bm_get_bitmap_creation_count)(void);
    150 ULong DRD_(bm_get_bitmap2_creation_count)(void);
    151 ULong DRD_(bm_get_bitmap2_merge_count)(void);
    152 
    153 #endif /* __PUB_DRD_BITMAP_H */
    154