diff options
Diffstat (limited to 'innobase/include/rem0rec.h')
| -rw-r--r-- | innobase/include/rem0rec.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/innobase/include/rem0rec.h b/innobase/include/rem0rec.h index 62c0aa14519..12e3a8b39d6 100644 --- a/innobase/include/rem0rec.h +++ b/innobase/include/rem0rec.h @@ -12,6 +12,7 @@ Created 5/30/1994 Heikki Tuuri #include "univ.i" #include "data0data.h" #include "rem0types.h" +#include "mtr0types.h" /* Maximum values for various fields (for non-blob tuples) */ #define REC_MAX_N_FIELDS (1024 - 1) @@ -162,6 +163,49 @@ rec_get_nth_field_size( /* out: field size in bytes */ rec_t* rec, /* in: record */ ulint n); /* in: index of the field */ +/*************************************************************** +Gets the value of the ith field extern storage bit. If it is TRUE +it means that the field is stored on another page. */ +UNIV_INLINE +ibool +rec_get_nth_field_extern_bit( +/*=========================*/ + /* in: TRUE or FALSE */ + rec_t* rec, /* in: record */ + ulint i); /* in: ith field */ +/********************************************************** +Returns TRUE if the extern bit is set in any of the fields +of rec. */ +UNIV_INLINE +ibool +rec_contains_externally_stored_field( +/*=================================*/ + /* out: TRUE if a field is stored externally */ + rec_t* rec); /* in: record */ +/*************************************************************** +Sets the value of the ith field extern storage bit. */ + +void +rec_set_nth_field_extern_bit( +/*=========================*/ + rec_t* rec, /* in: record */ + ulint i, /* in: ith field */ + ibool val, /* in: value to set */ + mtr_t* mtr); /* in: mtr holding an X-latch to the page where + rec is, or NULL; in the NULL case we do not + write to log about the change */ +/*************************************************************** +Sets TRUE the extern storage bits of fields mentioned in an array. */ + +void +rec_set_field_extern_bits( +/*======================*/ + rec_t* rec, /* in: record */ + ulint* vec, /* in: array of field numbers */ + ulint n_fields, /* in: number of fields numbers */ + mtr_t* mtr); /* in: mtr holding an X-latch to the page + where rec is, or NULL; in the NULL case we + do not write to log about the change */ /**************************************************************** The following function is used to get a copy of the nth data field in the record to a buffer. */ @@ -350,6 +394,15 @@ rec_sprintf( #define REC_INFO_BITS 6 /* This is single byte bit-field */ +/* Maximum lengths for the data in a physical record if the offsets +are given in one byte (resp. two byte) format. */ +#define REC_1BYTE_OFFS_LIMIT 0x7F +#define REC_2BYTE_OFFS_LIMIT 0x7FFF + +/* The data size of record must be smaller than this because we reserve +two upmost bits in a two byte offset for special purposes */ +#define REC_MAX_DATA_SIZE (16 * 1024) + #ifndef UNIV_NONINL #include "rem0rec.ic" #endif |