diff options
Diffstat (limited to 'storage/innobase/include/page0page.ic')
| -rw-r--r-- | storage/innobase/include/page0page.ic | 93 |
1 files changed, 79 insertions, 14 deletions
diff --git a/storage/innobase/include/page0page.ic b/storage/innobase/include/page0page.ic index 0062db56bfa..ee908896050 100644 --- a/storage/innobase/include/page0page.ic +++ b/storage/innobase/include/page0page.ic @@ -186,7 +186,7 @@ page_header_set_field( Returns the offset stored in the given header field. @return offset from the start of the page, or 0 */ UNIV_INLINE -ulint +uint16_t page_header_get_offs( /*=================*/ const page_t* page, /*!< in: page */ @@ -464,7 +464,7 @@ Gets the number of user records on page (infimum and supremum records are not user records). @return number of user records */ UNIV_INLINE -ulint +uint16_t page_get_n_recs( /*============*/ const page_t* page) /*!< in: index page */ @@ -477,7 +477,7 @@ page_get_n_recs( Gets the number of dir slots in directory. @return number of slots */ UNIV_INLINE -ulint +uint16_t page_dir_get_n_slots( /*=================*/ const page_t* page) /*!< in: index page */ @@ -502,7 +502,7 @@ page_dir_set_n_slots( Gets the number of records in the heap. @return number of user records */ UNIV_INLINE -ulint +uint16_t page_dir_get_n_heap( /*================*/ const page_t* page) /*!< in: index page */ @@ -868,21 +868,17 @@ Returns the sum of the sizes of the records in the record list, excluding the infimum and supremum records. @return data in bytes */ UNIV_INLINE -ulint +uint16_t page_get_data_size( /*===============*/ const page_t* page) /*!< in: index page */ { - ulint ret; - - ret = (ulint)(page_header_get_field(page, PAGE_HEAP_TOP) - - (page_is_comp(page) - ? PAGE_NEW_SUPREMUM_END - : PAGE_OLD_SUPREMUM_END) - - page_header_get_field(page, PAGE_GARBAGE)); - + uint16_t ret = page_header_get_field(page, PAGE_HEAP_TOP) + - (page_is_comp(page) + ? PAGE_NEW_SUPREMUM_END + : PAGE_OLD_SUPREMUM_END) + - page_header_get_field(page, PAGE_GARBAGE); ut_ad(ret < UNIV_PAGE_SIZE); - return(ret); } @@ -1078,6 +1074,75 @@ page_mem_free( } } +/** Read the PAGE_DIRECTION field from a byte. +@param[in] ptr pointer to PAGE_DIRECTION_B +@return the value of the PAGE_DIRECTION field */ +inline +byte +page_ptr_get_direction(const byte* ptr) +{ + ut_ad(page_offset(ptr) == PAGE_HEADER + PAGE_DIRECTION_B); + return *ptr & ((1U << 3) - 1); +} + +/** Set the PAGE_DIRECTION field. +@param[in] ptr pointer to PAGE_DIRECTION_B +@param[in] dir the value of the PAGE_DIRECTION field */ +inline +void +page_ptr_set_direction(byte* ptr, byte dir) +{ + ut_ad(page_offset(ptr) == PAGE_HEADER + PAGE_DIRECTION_B); + ut_ad(dir >= PAGE_LEFT); + ut_ad(dir <= PAGE_NO_DIRECTION); + *ptr = (*ptr & ~((1U << 3) - 1)) | dir; +} + +/** Read the PAGE_INSTANT field. +@param[in] page index page +@return the value of the PAGE_INSTANT field */ +inline +uint16_t +page_get_instant(const page_t* page) +{ + uint16_t i = page_header_get_field(page, PAGE_INSTANT); +#ifdef UNIV_DEBUG + switch (fil_page_get_type(page)) { + case FIL_PAGE_TYPE_INSTANT: + ut_ad(page_get_direction(page) <= PAGE_NO_DIRECTION); + ut_ad(i >> 3); + break; + case FIL_PAGE_INDEX: + ut_ad(i <= PAGE_NO_DIRECTION || !page_is_comp(page)); + break; + case FIL_PAGE_RTREE: + ut_ad(i == PAGE_NO_DIRECTION || i == 0); + break; + default: + ut_ad(!"invalid page type"); + break; + } +#endif /* UNIV_DEBUG */ + return(i >> 3); +} + +/** Assign the PAGE_INSTANT field. +@param[in,out] page clustered index root page +@param[in] n original number of clustered index fields +@param[in,out] mtr mini-transaction */ +inline +void +page_set_instant(page_t* page, unsigned n, mtr_t* mtr) +{ + ut_ad(fil_page_get_type(page) == FIL_PAGE_TYPE_INSTANT); + ut_ad(n > 0); + ut_ad(n < REC_MAX_N_FIELDS); + uint16_t i = page_header_get_field(page, PAGE_INSTANT); + ut_ad(i <= PAGE_NO_DIRECTION); + i |= n << 3; + mlog_write_ulint(PAGE_HEADER + PAGE_INSTANT + page, i, + MLOG_2BYTES, mtr); +} #endif /* !UNIV_INNOCHECKSUM */ #ifdef UNIV_MATERIALIZE |