LCOV - code coverage report
Current view: top level - src/backend/access/table - tableam_indexscan.c (source / functions) Coverage Total Hit
Test: PostgreSQL 20devel Lines: 88.9 % 9 8
Test Date: 2026-09-22 22:15:54 Functions: 100.0 % 1 1
Legend: Lines:     hit not hit
Branches: + taken - not taken # not executed
Branches: 75.0 % 4 3

             Branch data     Line data    Source code
       1                 :             : /*-------------------------------------------------------------------------
       2                 :             :  *
       3                 :             :  * tableam_indexscan.c
       4                 :             :  *    Helpers for table AM index scan callbacks.
       5                 :             :  *
       6                 :             :  *
       7                 :             :  * Table AMs can use these functions to implement xs_getnext_slot callbacks.
       8                 :             :  * See access/tableam.h.
       9                 :             :  *
      10                 :             :  * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
      11                 :             :  * Portions Copyright (c) 1994, Regents of the University of California
      12                 :             :  *
      13                 :             :  *
      14                 :             :  * IDENTIFICATION
      15                 :             :  *    src/backend/access/table/tableam_indexscan.c
      16                 :             :  *
      17                 :             :  *-------------------------------------------------------------------------
      18                 :             :  */
      19                 :             : 
      20                 :             : #include "postgres.h"
      21                 :             : 
      22                 :             : #include "access/tableam_indexscan.h"
      23                 :             : #include "utils/builtins.h"
      24                 :             : 
      25                 :             : /*
      26                 :             :  * Copy all name columns stored as cstrings back into NAMEDATALEN bytes of
      27                 :             :  * xs_name_cstring_buf.
      28                 :             :  *
      29                 :             :  * Called by tableam_index_fill_ios_slot (kept out of line, since it's needed
      30                 :             :  * only by index-only scans of indexes on "name" columns).
      31                 :             :  */
      32                 :             : pg_attribute_cold void
      33                 :        6398 : tableam_index_fill_ios_names(IndexScanDesc scan, TupleTableSlot *slot)
      34                 :             : {
      35         [ +  + ]:       12796 :     for (int idx = 0; idx < scan->xs_name_cstring_count; idx++)
      36                 :             :     {
      37                 :        6398 :         int         attnum = scan->xs_name_cstring_attnums[idx];
      38                 :             :         Name        name;
      39                 :             : 
      40                 :             :         /* skip null Datums */
      41         [ -  + ]:        6398 :         if (slot->tts_isnull[attnum])
      42                 :           0 :             continue;
      43                 :             : 
      44                 :             :         /* use namestrcpy to zero-pad all trailing bytes */
      45                 :        6398 :         name = (Name) (scan->xs_name_cstring_buf + idx * NAMEDATALEN);
      46                 :        6398 :         namestrcpy(name, DatumGetCString(slot->tts_values[attnum]));
      47                 :        6398 :         slot->tts_values[attnum] = NameGetDatum(name);
      48                 :             :     }
      49                 :        6398 : }
        

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