diff options
Diffstat (limited to 'storage/innobase/include/page0page.ic')
| -rw-r--r-- | storage/innobase/include/page0page.ic | 240 |
1 files changed, 17 insertions, 223 deletions
diff --git a/storage/innobase/include/page0page.ic b/storage/innobase/include/page0page.ic index db98f2e6558..0062db56bfa 100644 --- a/storage/innobase/include/page0page.ic +++ b/storage/innobase/include/page0page.ic @@ -40,32 +40,7 @@ Created 2/2/1994 Heikki Tuuri #undef UNIV_INLINE #define UNIV_INLINE #endif -#endif /* !UNIV_INNOCHECKSUM */ -/************************************************************//** -Gets the start of a page. -@return start of the page */ -UNIV_INLINE -page_t* -page_align( -/*=======*/ - const void* ptr) /*!< in: pointer to page frame */ -{ - return((page_t*) ut_align_down(ptr, UNIV_PAGE_SIZE)); -} - -#ifndef UNIV_INNOCHECKSUM -/************************************************************//** -Gets the offset within a page. -@return offset from the start of the page */ -UNIV_INLINE -ulint -page_offset( -/*========*/ - const void* ptr) /*!< in: pointer to page frame */ -{ - return(ut_align_offset(ptr, UNIV_PAGE_SIZE)); -} /*************************************************************//** Returns the max trx id field value. */ UNIV_INLINE @@ -286,34 +261,6 @@ page_header_reset_last_insert( } } -#endif /* !UNIV_INNOCHECKSUM */ - -/************************************************************//** -Determine whether the page is in new-style compact format. -@return nonzero if the page is in compact format, zero if it is in -old-style format */ -UNIV_INLINE -ulint -page_is_comp( -/*=========*/ - const page_t* page) /*!< in: index page */ -{ - return(page[PAGE_HEADER + PAGE_N_HEAP] & 0x80); -} - -#ifndef UNIV_INNOCHECKSUM -/************************************************************//** -TRUE if the record is on a page in compact format. -@return nonzero if in compact format */ -UNIV_INLINE -ulint -page_rec_is_comp( -/*=============*/ - const rec_t* rec) /*!< in: record */ -{ - return(page_is_comp(page_align(rec))); -} - /***************************************************************//** Returns the heap number of a record. @return heap number */ @@ -330,33 +277,6 @@ page_rec_get_heap_no( } } -#endif /* !UNIV_INNOCHECKSUM */ - -/************************************************************//** -Determine whether the page is a B-tree leaf. -@return true if the page is a B-tree leaf (PAGE_LEVEL = 0) */ -UNIV_INLINE -bool -page_is_leaf( -/*=========*/ - const page_t* page) /*!< in: page */ -{ - return(!*(const uint16*) (page + (PAGE_HEADER + PAGE_LEVEL))); -} - -#ifndef UNIV_INNOCHECKSUM -/************************************************************//** -Determine whether the page is empty. -@return true if the page is empty (PAGE_N_RECS = 0) */ -UNIV_INLINE -bool -page_is_empty( -/*==========*/ - const page_t* page) /*!< in: page */ -{ - return(!*(const uint16*) (page + (PAGE_HEADER + PAGE_N_RECS))); -} - /** Determine whether a page is an index root page. @param[in] page page frame @return true if the page is a root page of an index */ @@ -382,162 +302,36 @@ page_is_root( == IB_UINT64_MAX); } -/************************************************************//** -Determine whether the page contains garbage. -@return true if the page contains garbage (PAGE_GARBAGE is not 0) */ -UNIV_INLINE +/** Determine whether an index page record is a user record. +@param[in] rec record in an index page +@return true if a user record */ +inline bool -page_has_garbage( -/*=============*/ - const page_t* page) /*!< in: page */ -{ - return(!!*(const uint16*) (page + (PAGE_HEADER + PAGE_GARBAGE))); -} - -/************************************************************//** -Gets the offset of the first record on the page. -@return offset of the first record in record list, relative from page */ -UNIV_INLINE -ulint -page_get_infimum_offset( -/*====================*/ - const page_t* page) /*!< in: page which must have record(s) */ -{ - ut_ad(page); - ut_ad(!page_offset(page)); - - if (page_is_comp(page)) { - return(PAGE_NEW_INFIMUM); - } else { - return(PAGE_OLD_INFIMUM); - } -} - -/************************************************************//** -Gets the offset of the last record on the page. -@return offset of the last record in record list, relative from page */ -UNIV_INLINE -ulint -page_get_supremum_offset( -/*=====================*/ - const page_t* page) /*!< in: page which must have record(s) */ -{ - ut_ad(page); - ut_ad(!page_offset(page)); - - if (page_is_comp(page)) { - return(PAGE_NEW_SUPREMUM); - } else { - return(PAGE_OLD_SUPREMUM); - } -} - -/************************************************************//** -TRUE if the record is a user record on the page. -@return TRUE if a user record */ -UNIV_INLINE -ibool -page_rec_is_user_rec_low( -/*=====================*/ - ulint offset) /*!< in: record offset on page */ -{ - ut_ad(offset >= PAGE_NEW_INFIMUM); -#if PAGE_OLD_INFIMUM < PAGE_NEW_INFIMUM -# error "PAGE_OLD_INFIMUM < PAGE_NEW_INFIMUM" -#endif -#if PAGE_OLD_SUPREMUM < PAGE_NEW_SUPREMUM -# error "PAGE_OLD_SUPREMUM < PAGE_NEW_SUPREMUM" -#endif -#if PAGE_NEW_INFIMUM > PAGE_OLD_SUPREMUM -# error "PAGE_NEW_INFIMUM > PAGE_OLD_SUPREMUM" -#endif -#if PAGE_OLD_INFIMUM > PAGE_NEW_SUPREMUM -# error "PAGE_OLD_INFIMUM > PAGE_NEW_SUPREMUM" -#endif -#if PAGE_NEW_SUPREMUM > PAGE_OLD_SUPREMUM_END -# error "PAGE_NEW_SUPREMUM > PAGE_OLD_SUPREMUM_END" -#endif -#if PAGE_OLD_SUPREMUM > PAGE_NEW_SUPREMUM_END -# error "PAGE_OLD_SUPREMUM > PAGE_NEW_SUPREMUM_END" -#endif - ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START); - - return(offset != PAGE_NEW_SUPREMUM - && offset != PAGE_NEW_INFIMUM - && offset != PAGE_OLD_INFIMUM - && offset != PAGE_OLD_SUPREMUM); -} - -/************************************************************//** -TRUE if the record is the supremum record on a page. -@return TRUE if the supremum record */ -UNIV_INLINE -ibool -page_rec_is_supremum_low( -/*=====================*/ - ulint offset) /*!< in: record offset on page */ -{ - ut_ad(offset >= PAGE_NEW_INFIMUM); - ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START); - - return(offset == PAGE_NEW_SUPREMUM - || offset == PAGE_OLD_SUPREMUM); -} - -/************************************************************//** -TRUE if the record is the infimum record on a page. -@return TRUE if the infimum record */ -UNIV_INLINE -ibool -page_rec_is_infimum_low( -/*====================*/ - ulint offset) /*!< in: record offset on page */ -{ - ut_ad(offset >= PAGE_NEW_INFIMUM); - ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START); - - return(offset == PAGE_NEW_INFIMUM || offset == PAGE_OLD_INFIMUM); -} - -/************************************************************//** -TRUE if the record is a user record on the page. -@return TRUE if a user record */ -UNIV_INLINE -ibool -page_rec_is_user_rec( -/*=================*/ - const rec_t* rec) /*!< in: record */ +page_rec_is_user_rec(const rec_t* rec) { ut_ad(page_rec_check(rec)); - return(page_rec_is_user_rec_low(page_offset(rec))); } -/************************************************************//** -TRUE if the record is the supremum record on a page. -@return TRUE if the supremum record */ -UNIV_INLINE -ibool -page_rec_is_supremum( -/*=================*/ - const rec_t* rec) /*!< in: record */ +/** Determine whether an index page record is the supremum record. +@param[in] rec record in an index page +@return true if the supremum record */ +inline +bool +page_rec_is_supremum(const rec_t* rec) { ut_ad(page_rec_check(rec)); - return(page_rec_is_supremum_low(page_offset(rec))); } -/************************************************************//** -TRUE if the record is the infimum record on a page. -@return TRUE if the infimum record */ -UNIV_INLINE -ibool -page_rec_is_infimum( -/*================*/ - const rec_t* rec) /*!< in: record */ +/** Determine whether an index page record is the infimum record. +@param[in] rec record in an index page +@return true if the infimum record */ +inline +bool +page_rec_is_infimum(const rec_t* rec) { ut_ad(page_rec_check(rec)); - return(page_rec_is_infimum_low(page_offset(rec))); } |