Age         Owner                  TLA  Line data    Source code

                                  1                 : /*-------------------------------------------------------------------------
                                  2                 :  *
                                  3                 :  * genericdesc.c
                                  4                 :  *    rmgr descriptor routines for access/transam/generic_xlog.c
                                  5                 :  *
                                  6                 :  *
                                  7                 :  * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
                                  8                 :  * Portions Copyright (c) 1994, Regents of the University of California
                                  9                 :  *
                                 10                 :  * src/backend/access/rmgrdesc/genericdesc.c
                                 11                 :  *
                                 12                 :  *-------------------------------------------------------------------------
                                 13                 :  */
                                 14                 : #include "postgres.h"
                                 15                 : 
                                 16                 : #include "access/generic_xlog.h"
                                 17                 : #include "lib/stringinfo.h"
                                 18                 : #include "storage/relfilelocator.h"
                                 19                 : 
                                 20                 : /*
                                 21                 :  * Description of generic xlog record: write page regions that this record
                                 22                 :  * overrides.
                                 23                 :  */
                                 24                 : void
 2564 teodor                     25 UBC           0 : generic_desc(StringInfo buf, XLogReaderState *record)
                                 26                 : {
                                 27               0 :     Pointer     ptr = XLogRecGetData(record),
                                 28               0 :                 end = ptr + XLogRecGetDataLen(record);
                                 29                 : 
                                 30               0 :     while (ptr < end)
                                 31                 :     {
                                 32                 :         OffsetNumber offset,
                                 33                 :                     length;
                                 34                 : 
                                 35               0 :         memcpy(&offset, ptr, sizeof(offset));
                                 36               0 :         ptr += sizeof(offset);
                                 37               0 :         memcpy(&length, ptr, sizeof(length));
                                 38               0 :         ptr += sizeof(length);
                                 39               0 :         ptr += length;
                                 40                 : 
                                 41               0 :         if (ptr < end)
                                 42               0 :             appendStringInfo(buf, "offset %u, length %u; ", offset, length);
                                 43                 :         else
                                 44               0 :             appendStringInfo(buf, "offset %u, length %u", offset, length);
                                 45                 :     }
                                 46               0 : }
                                 47                 : 
                                 48                 : /*
                                 49                 :  * Identification of generic xlog record: we don't distinguish any subtypes
                                 50                 :  * inside generic xlog records.
                                 51                 :  */
                                 52                 : const char *
                                 53               0 : generic_identify(uint8 info)
                                 54                 : {
                                 55               0 :     return "Generic";
                                 56                 : }