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16f3d27113
btr_root_raise_and_insert(): Because btr_page_set_level() must not change level from non-zero to zero on compressed pages, invoke btr_page_set_level() with page_zip==NULL and compress the entire root page after creating it from the scratch. btr_attach_half_pages(): Simplify the computation of lower_page_zip and upper_page_zip. Invoke btr_node_ptr_set_child_page_no() with the correct page_zip. page0page.h: Add __attribute__((const)) to functions testing for infimum or supremum. page_zip_dir_delete(): Note that the third parameter may be NULL. Correct offset errors. page_zip_available(): Use n_heap instead of n_recs. page_zip_dir_find(), page_zip_dir_find_free(): Fix off-by-one error. page_zip_fields_encode(), page_zip_fields_decode(): Encode and decode index->n_nullable for non-leaf pages. page_zip_apply_log(): Write REC_NEW_HEAP_NO before calling rec_offs_make_valid(). page_zip_write_node_ptr(): Correct off-by-one error. page_cur_search_with_match(): Make use of page_is_leaf(). page_dir_add_slots(): Replaced with page_dir_add_slot(). Use memmove().
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/******************************************************
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Index page routines
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(c) 1994-1996 Innobase Oy
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Created 2/2/1994 Heikki Tuuri
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*******************************************************/
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#ifndef page0types_h
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#define page0types_h
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#include "univ.i"
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#include "dict0types.h"
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#include "mtr0types.h"
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/* Type of the index page */
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/* The following define eliminates a name collision on HP-UX */
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#define page_t ib_page_t
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typedef byte page_t;
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typedef struct page_search_struct page_search_t;
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typedef struct page_cur_struct page_cur_t;
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typedef byte page_zip_t;
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typedef struct page_zip_des_struct page_zip_des_t;
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/* The following definitions would better belong to page0zip.h,
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but we cannot include page0zip.h from rem0rec.ic, because
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page0*.h includes rem0rec.h and may include rem0rec.ic. */
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/* Compressed page descriptor */
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struct page_zip_des_struct
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{
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page_zip_t* data; /* compressed page data */
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ulint size; /* total size of compressed page */
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ulint n_blobs; /* number of externally stored
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columns */
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ulint m_start; /* start offset of modification log */
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ulint m_end; /* end offset of modification log */
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};
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/**************************************************************************
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Write data to the compressed page. The data must already be written to
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the uncompressed page. */
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void
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page_zip_write(
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/*===========*/
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page_zip_des_t* page_zip,/* in/out: compressed page */
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const byte* rec, /* in: record whose data is being written */
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const ulint* offsets,/* in: rec_get_offsets(rec, index) */
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lint offset, /* in: start address of the block,
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relative to rec */
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ulint length) /* in: length of the data */
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__attribute__((nonnull));
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/**************************************************************************
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Clear a record on the uncompressed and compressed page, if possible. */
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void
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page_zip_clear_rec(
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/*===============*/
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page_zip_des_t* page_zip,/* in/out: compressed page */
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byte* rec, /* in: record to clear */
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dict_index_t* index, /* in: index of rec */
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const ulint* offsets,/* in: rec_get_offsets(rec, index) */
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mtr_t* mtr) /* in: mini-transaction */
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__attribute__((nonnull));
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/**************************************************************************
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Write data to the uncompressed header portion of a page. The data must
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already have been written to the uncompressed page. */
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UNIV_INLINE
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void
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page_zip_write_header(
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/*==================*/
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page_zip_des_t* page_zip,/* in/out: compressed page */
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const byte* str, /* in: address on the uncompressed page */
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ulint length, /* in: length of the data */
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mtr_t* mtr) /* in: mini-transaction, or NULL */
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__attribute__((nonnull(1,2)));
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/**************************************************************************
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Write the "deleted" flag of a record on a compressed page. The flag must
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already have been written on the uncompressed page. */
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void
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page_zip_rec_set_deleted(
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/*=====================*/
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page_zip_des_t* page_zip,/* in/out: compressed page */
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const byte* rec, /* in: record on the uncompressed page */
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ulint flag) /* in: the deleted flag (nonzero=TRUE) */
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__attribute__((nonnull));
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/**************************************************************************
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Write the "owned" flag of a record on a compressed page. The n_owned field
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must already have been written on the uncompressed page. */
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void
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page_zip_rec_set_owned(
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/*===================*/
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page_zip_des_t* page_zip,/* in/out: compressed page */
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const byte* rec, /* in: record on the uncompressed page */
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ulint flag) /* in: the owned flag (nonzero=TRUE) */
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__attribute__((nonnull));
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/**************************************************************************
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Shift the dense page directory when a record is deleted. */
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void
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page_zip_dir_delete(
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/*================*/
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page_zip_des_t* page_zip,/* in/out: compressed page */
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const byte* rec, /* in: deleted record */
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const byte* free) /* in: previous start of the free list */
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__attribute__((nonnull(1,2)));
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/**************************************************************************
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Add a slot to the dense page directory. */
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void
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page_zip_dir_add_slot(
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/*==================*/
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page_zip_des_t* page_zip)/* in/out: compressed page */
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__attribute__((nonnull));
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#endif
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