LCOV - code coverage report
Current view: top level - strace - dyxlat.c (source / functions) Hit Total Coverage
Test: strace-4.18.0.129.97bbb Code Coverage Lines: 17 32 53.1 %
Date: 2017-07-31 03:46:08 Functions: 3 4 75.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 5 14 35.7 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (c) 2017 The strace developers.
       3                 :            :  *
       4                 :            :  * Redistribution and use in source and binary forms, with or without
       5                 :            :  * modification, are permitted provided that the following conditions
       6                 :            :  * are met:
       7                 :            :  * 1. Redistributions of source code must retain the above copyright
       8                 :            :  *    notice, this list of conditions and the following disclaimer.
       9                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      10                 :            :  *    notice, this list of conditions and the following disclaimer in the
      11                 :            :  *    documentation and/or other materials provided with the distribution.
      12                 :            :  * 3. The name of the author may not be used to endorse or promote products
      13                 :            :  *    derived from this software without specific prior written permission.
      14                 :            :  *
      15                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      16                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      17                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      18                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      19                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      20                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      21                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      22                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      23                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      24                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      25                 :            :  */
      26                 :            : 
      27                 :            : #include "defs.h"
      28                 :            : 
      29                 :            : struct dyxlat {
      30                 :            :         size_t used;
      31                 :            :         size_t allocated;
      32                 :            :         struct xlat *xlat;
      33                 :            : };
      34                 :            : 
      35                 :            : #define MARK_END(xlat)                          \
      36                 :            :         do {                                    \
      37                 :            :                 (xlat).val = 0;                 \
      38                 :            :                 (xlat).str = 0;                 \
      39                 :            :         } while (0)
      40                 :            : 
      41                 :            : struct dyxlat *
      42                 :          2 : dyxlat_alloc(const size_t nmemb)
      43                 :            : {
      44                 :          2 :         struct dyxlat *const dyxlat = xmalloc(sizeof(*dyxlat));
      45                 :            : 
      46                 :          2 :         dyxlat->used = 1;
      47         [ +  - ]:          2 :         dyxlat->allocated = nmemb ? nmemb : 16;
      48                 :          2 :         dyxlat->xlat = xcalloc(dyxlat->allocated, sizeof(struct xlat));
      49                 :          2 :         MARK_END(dyxlat->xlat[0]);
      50                 :            : 
      51                 :          2 :         return dyxlat;
      52                 :            : }
      53                 :            : 
      54                 :            : void
      55                 :          0 : dyxlat_free(struct dyxlat *const dyxlat)
      56                 :            : {
      57                 :            :         size_t i;
      58                 :            : 
      59         [ #  # ]:          0 :         for (i = 0; i < dyxlat->used - 1; ++i) {
      60                 :          0 :                 free((void *) dyxlat->xlat[i].str);
      61                 :          0 :                 dyxlat->xlat[i].str = NULL;
      62                 :            :         }
      63                 :            : 
      64                 :          0 :         free(dyxlat->xlat);
      65                 :          0 :         dyxlat->xlat = NULL;
      66                 :          0 :         free(dyxlat);
      67                 :          0 : }
      68                 :            : 
      69                 :            : const struct xlat *
      70                 :          2 : dyxlat_get(const struct dyxlat *const dyxlat)
      71                 :            : {
      72                 :          2 :         return dyxlat->xlat;
      73                 :            : }
      74                 :            : 
      75                 :            : void
      76                 :         14 : dyxlat_add_pair(struct dyxlat *const dyxlat, const uint64_t val,
      77                 :            :                 const char *const str, const size_t len)
      78                 :            : {
      79                 :            :         size_t i;
      80                 :            : 
      81         [ +  + ]:         56 :         for (i = 0; i < dyxlat->used - 1; ++i) {
      82         [ -  + ]:         42 :                 if (dyxlat->xlat[i].val == val) {
      83         [ #  # ]:          0 :                         if (strncmp(dyxlat->xlat[i].str, str, len) == 0
      84         [ #  # ]:          0 :                             && dyxlat->xlat[i].str[len] == '\0')
      85                 :            :                                 return;
      86                 :            : 
      87                 :          0 :                         free((void *) dyxlat->xlat[i].str);
      88                 :          0 :                         dyxlat->xlat[i].str = xstrndup(str, len);
      89                 :          0 :                         return;
      90                 :            :                 }
      91                 :            :         }
      92                 :            : 
      93         [ -  + ]:         14 :         if (dyxlat->used >= dyxlat->allocated) {
      94                 :          0 :                 dyxlat->allocated *= 2;
      95                 :          0 :                 dyxlat->xlat = xreallocarray(dyxlat->xlat, dyxlat->allocated,
      96                 :            :                                              sizeof(struct xlat));
      97                 :            :         }
      98                 :            : 
      99                 :         14 :         dyxlat->xlat[dyxlat->used - 1].val = val;
     100                 :         14 :         dyxlat->xlat[dyxlat->used - 1].str = xstrndup(str, len);
     101                 :         14 :         MARK_END(dyxlat->xlat[dyxlat->used]);
     102                 :         14 :         dyxlat->used++;
     103                 :            : }

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