diff options
Diffstat (limited to 'storage/innobase/include/rem0rec.h')
| -rw-r--r-- | storage/innobase/include/rem0rec.h | 137 |
1 files changed, 90 insertions, 47 deletions
diff --git a/storage/innobase/include/rem0rec.h b/storage/innobase/include/rem0rec.h index c81f0479ce6..f38efc660c4 100644 --- a/storage/innobase/include/rem0rec.h +++ b/storage/innobase/include/rem0rec.h @@ -71,29 +71,72 @@ The status is stored in the low-order bits. */ /* Length of a B-tree node pointer, in bytes */ #define REC_NODE_PTR_SIZE 4 +#ifndef UNIV_INNOCHECKSUM /** SQL null flag in a 1-byte offset of ROW_FORMAT=REDUNDANT records */ -#define REC_1BYTE_SQL_NULL_MASK 0x80UL +static const offset_t REC_1BYTE_SQL_NULL_MASK= 0x80; /** SQL null flag in a 2-byte offset of ROW_FORMAT=REDUNDANT records */ -#define REC_2BYTE_SQL_NULL_MASK 0x8000UL +static const offset_t REC_2BYTE_SQL_NULL_MASK= 0x8000; /** In a 2-byte offset of ROW_FORMAT=REDUNDANT records, the second most significant bit denotes that the tail of a field is stored off-page. */ -#define REC_2BYTE_EXTERN_MASK 0x4000UL +static const offset_t REC_2BYTE_EXTERN_MASK= 0x4000; + +static const size_t RECORD_OFFSET= 2; +static const size_t INDEX_OFFSET= + RECORD_OFFSET + sizeof(rec_t *) / sizeof(offset_t); -#ifdef UNIV_DEBUG -/* Length of the rec_get_offsets() header */ -# define REC_OFFS_HEADER_SIZE 4 -#else /* UNIV_DEBUG */ /* Length of the rec_get_offsets() header */ -# define REC_OFFS_HEADER_SIZE 2 +static const size_t REC_OFFS_HEADER_SIZE= +#ifdef UNIV_DEBUG + sizeof(rec_t *) / sizeof(offset_t) + + sizeof(dict_index_t *) / sizeof(offset_t) + #endif /* UNIV_DEBUG */ + 2; /* Number of elements that should be initially allocated for the offsets[] array, first passed to rec_get_offsets() */ -#define REC_OFFS_NORMAL_SIZE OFFS_IN_REC_NORMAL_SIZE -#define REC_OFFS_SMALL_SIZE 10 +static const size_t REC_OFFS_NORMAL_SIZE= 300; +static const size_t REC_OFFS_SMALL_SIZE= 18; +static const size_t REC_OFFS_SEC_INDEX_SIZE= + /* PK max key parts */ 16 + /* sec idx max key parts */ 16 + + /* child page number for non-leaf pages */ 1; + +/* Offset consists of two parts: 2 upper bits is type and all other bits is +value */ + +enum field_type_t +{ + /** normal field */ + STORED_IN_RECORD= 0 << 14, + /** this field is stored off-page */ + STORED_OFFPAGE= 1 << 14, + /** just an SQL NULL */ + SQL_NULL= 2 << 14 +}; + +/** without 2 upper bits */ +static const offset_t DATA_MASK= 0x3fff; +/** 2 upper bits */ +static const offset_t TYPE_MASK= ~DATA_MASK; +inline field_type_t get_type(offset_t n) +{ + return static_cast<field_type_t>(n & TYPE_MASK); +} +inline void set_type(offset_t &n, field_type_t type) +{ + n= (n & DATA_MASK) | static_cast<offset_t>(type); +} +inline offset_t get_value(offset_t n) { return n & DATA_MASK; } +inline offset_t combine(offset_t value, field_type_t type) +{ + return get_value(value) | static_cast<offset_t>(type); +} + +/** Compact flag ORed to the extra size returned by rec_offs_base()[0] */ +static const offset_t REC_OFFS_COMPACT= 1 << 15; +/** External flag in offsets returned by rec_offs_base()[0] */ +static const offset_t REC_OFFS_EXTERNAL= 1 << 14; -#ifndef UNIV_INNOCHECKSUM /******************************************************//** The following function is used to get the pointer of the next chained record on the same page. @@ -398,7 +441,7 @@ offsets form. If the field is SQL null, the flag is ORed in the returned value. @return offset of the start of the field, SQL null flag ORed */ UNIV_INLINE -ulint +uint8_t rec_1_get_field_end_info( /*=====================*/ const rec_t* rec, /*!< in: record */ @@ -453,11 +496,11 @@ rec_get_n_extern_new( (ULINT_UNDEFINED to compute all offsets) @param[in,out] heap memory heap @return the new offsets */ -ulint* +offset_t* rec_get_offsets_func( const rec_t* rec, const dict_index_t* index, - ulint* offsets, + offset_t* offsets, #ifdef UNIV_DEBUG bool leaf, #endif /* UNIV_DEBUG */ @@ -494,7 +537,7 @@ rec_get_offsets_reverse( const dict_index_t* index, /*!< in: record descriptor */ ulint node_ptr,/*!< in: nonzero=node pointer, 0=leaf node */ - ulint* offsets)/*!< in/out: array consisting of + offset_t* offsets)/*!< in/out: array consisting of offsets[0] allocated elements */ MY_ATTRIBUTE((nonnull)); #ifdef UNIV_DEBUG @@ -507,7 +550,7 @@ rec_offs_validate( /*==============*/ const rec_t* rec, /*!< in: record or NULL */ const dict_index_t* index, /*!< in: record descriptor or NULL */ - const ulint* offsets)/*!< in: array returned by + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((nonnull(3), warn_unused_result)); /************************************************************//** @@ -519,7 +562,7 @@ rec_offs_make_valid( /*================*/ const rec_t* rec, /*!< in: record */ const dict_index_t* index, /*!< in: record descriptor */ - ulint* offsets)/*!< in: array returned by + offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((nonnull)); #else @@ -557,10 +600,10 @@ The following function is used to get an offset to the nth data field in a record. @return offset from the origin of rec */ UNIV_INLINE -ulint +offset_t rec_get_nth_field_offs( /*===================*/ - const ulint* offsets,/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets,/*!< in: array returned by rec_get_offsets() */ ulint n, /*!< in: index of the field */ ulint* len) /*!< out: length of the field; UNIV_SQL_NULL if SQL null */ @@ -575,7 +618,7 @@ UNIV_INLINE ulint rec_offs_comp( /*==========*/ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /******************************************************//** Determine if the offsets are for a record containing @@ -585,7 +628,7 @@ UNIV_INLINE ulint rec_offs_any_extern( /*================*/ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /******************************************************//** Determine if the offsets are for a record containing null BLOB pointers. @@ -595,7 +638,7 @@ const byte* rec_offs_any_null_extern( /*=====================*/ const rec_t* rec, /*!< in: record */ - const ulint* offsets) /*!< in: rec_get_offsets(rec) */ + const offset_t* offsets) /*!< in: rec_get_offsets(rec) */ MY_ATTRIBUTE((warn_unused_result)); /******************************************************//** Returns nonzero if the extern bit is set in nth field of rec. @@ -604,7 +647,7 @@ UNIV_INLINE ulint rec_offs_nth_extern( /*================*/ - const ulint* offsets,/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets,/*!< in: array returned by rec_get_offsets() */ ulint n) /*!< in: nth field */ MY_ATTRIBUTE((warn_unused_result)); @@ -613,7 +656,7 @@ rec_offs_nth_extern( @param[in] n nth field */ void rec_offs_make_nth_extern( - ulint* offsets, + offset_t* offsets, const ulint n); /******************************************************//** Returns nonzero if the SQL NULL bit is set in nth field of rec. @@ -622,7 +665,7 @@ UNIV_INLINE ulint rec_offs_nth_sql_null( /*==================*/ - const ulint* offsets,/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets,/*!< in: array returned by rec_get_offsets() */ ulint n) /*!< in: nth field */ MY_ATTRIBUTE((warn_unused_result)); /******************************************************//** @@ -632,7 +675,7 @@ UNIV_INLINE ulint rec_offs_nth_size( /*==============*/ - const ulint* offsets,/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets,/*!< in: array returned by rec_get_offsets() */ ulint n) /*!< in: nth field */ MY_ATTRIBUTE((warn_unused_result)); @@ -643,7 +686,7 @@ UNIV_INLINE ulint rec_offs_n_extern( /*==============*/ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /***********************************************************//** This is used to modify the value of an already existing field in a record. @@ -656,7 +699,7 @@ void rec_set_nth_field( /*==============*/ rec_t* rec, /*!< in: record */ - const ulint* offsets,/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets,/*!< in: array returned by rec_get_offsets() */ ulint n, /*!< in: index number of the field */ const void* data, /*!< in: pointer to the data if not SQL null */ ulint len) /*!< in: length of the data or UNIV_SQL_NULL. @@ -685,7 +728,7 @@ UNIV_INLINE ulint rec_offs_get_n_alloc( /*=================*/ - const ulint* offsets)/*!< in: array for rec_get_offsets() */ + const offset_t* offsets)/*!< in: array for rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /**********************************************************//** The following function sets the number of allocated elements @@ -694,7 +737,7 @@ UNIV_INLINE void rec_offs_set_n_alloc( /*=================*/ - ulint* offsets, /*!< out: array for rec_get_offsets(), + offset_t*offsets, /*!< out: array for rec_get_offsets(), must be allocated */ ulint n_alloc) /*!< in: number of elements */ MY_ATTRIBUTE((nonnull)); @@ -707,7 +750,7 @@ UNIV_INLINE ulint rec_offs_n_fields( /*==============*/ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /**********************************************************//** The following function returns the data size of a physical @@ -719,7 +762,7 @@ UNIV_INLINE ulint rec_offs_data_size( /*===============*/ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /**********************************************************//** Returns the total size of record minus data size of record. @@ -730,7 +773,7 @@ UNIV_INLINE ulint rec_offs_extra_size( /*================*/ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /**********************************************************//** Returns the total size of a physical record. @@ -739,7 +782,7 @@ UNIV_INLINE ulint rec_offs_size( /*==========*/ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); #ifdef UNIV_DEBUG /**********************************************************//** @@ -750,7 +793,7 @@ byte* rec_get_start( /*==========*/ const rec_t* rec, /*!< in: pointer to record */ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); /**********************************************************//** Returns a pointer to the end of the record. @@ -760,7 +803,7 @@ byte* rec_get_end( /*========*/ const rec_t* rec, /*!< in: pointer to record */ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((warn_unused_result)); #else /* UNIV_DEBUG */ # define rec_get_start(rec, offsets) ((rec) - rec_offs_extra_size(offsets)) @@ -777,7 +820,7 @@ rec_t* rec_copy( void* buf, const rec_t* rec, - const ulint* offsets); + const offset_t* offsets); /** Determine the size of a data tuple prefix in a temporary file. @param[in] index clustered or secondary index @@ -801,7 +844,7 @@ rec_init_offsets_temp( /*==================*/ const rec_t* rec, /*!< in: temporary file record */ const dict_index_t* index, /*!< in: record descriptor */ - ulint* offsets)/*!< in/out: array of offsets; + offset_t* offsets)/*!< in/out: array of offsets; in: n=rec_offs_n_fields(offsets) */ MY_ATTRIBUTE((nonnull)); @@ -843,7 +886,7 @@ UNIV_INLINE ulint rec_fold( const rec_t* rec, - const ulint* offsets, + const offset_t* offsets, ulint n_fields, ulint n_bytes, index_id_t tree_id) @@ -944,7 +987,7 @@ ibool rec_validate( /*=========*/ const rec_t* rec, /*!< in: physical record */ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((nonnull)); /***************************************************************//** Prints an old-style physical record. */ @@ -961,7 +1004,7 @@ rec_print_mbr_rec( /*==========*/ FILE* file, /*!< in: file where to print */ const rec_t* rec, /*!< in: physical record */ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((nonnull)); /***************************************************************//** Prints a physical record. */ @@ -970,7 +1013,7 @@ rec_print_new( /*==========*/ FILE* file, /*!< in: file where to print */ const rec_t* rec, /*!< in: physical record */ - const ulint* offsets)/*!< in: array returned by rec_get_offsets() */ + const offset_t* offsets)/*!< in: array returned by rec_get_offsets() */ MY_ATTRIBUTE((nonnull)); /***************************************************************//** Prints a physical record. */ @@ -992,7 +1035,7 @@ rec_print( std::ostream& o, const rec_t* rec, ulint info, - const ulint* offsets); + const offset_t* offsets); /** Wrapper for pretty-printing a record */ struct rec_index_print @@ -1019,14 +1062,14 @@ operator<<(std::ostream& o, const rec_index_print& r); struct rec_offsets_print { /** Constructor */ - rec_offsets_print(const rec_t* rec, const ulint* offsets) : + rec_offsets_print(const rec_t* rec, const offset_t* offsets) : m_rec(rec), m_offsets(offsets) {} /** Record */ const rec_t* m_rec; /** Offsets to each field */ - const ulint* m_offsets; + const offset_t* m_offsets; }; /** Display a record. @@ -1043,7 +1086,7 @@ public: /** Construct a pretty-printed record. @param rec record with header @param offsets rec_get_offsets(rec, ...) */ - rec_printer(const rec_t* rec, const ulint* offsets) + rec_printer(const rec_t* rec, const offset_t* offsets) : std::ostringstream () { @@ -1056,7 +1099,7 @@ public: @param rec record, possibly lacking header @param info rec_get_info_bits(rec) @param offsets rec_get_offsets(rec, ...) */ - rec_printer(const rec_t* rec, ulint info, const ulint* offsets) + rec_printer(const rec_t* rec, ulint info, const offset_t* offsets) : std::ostringstream () { |