138 lines
3.2 KiB
Plaintext
138 lines
3.2 KiB
Plaintext
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1996, 1997
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* Sleepycat Software. All rights reserved.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)btree.src 10.3 (Sleepycat) 8/17/97";
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#endif /* not lint */
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PREFIX bam
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/*
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* BTREE-pg_alloc: used to record allocating a new page.
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*
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* meta_lsn: the meta-data page's original lsn.
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* page_lsn: the allocated page's original lsn.
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* pgno: the page allocated.
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* next: the next page on the free list.
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*/
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BEGIN pg_alloc
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ARG fileid u_int32_t lu
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POINTER meta_lsn DB_LSN * lu
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POINTER page_lsn DB_LSN * lu
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ARG pgno db_pgno_t lu
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ARG ptype u_int32_t lu
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ARG next db_pgno_t lu
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END
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/*
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* BTREE-pg_free: used to record freeing a page.
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*
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* pgno: the page being freed.
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* meta_lsn: the meta-data page's original lsn.
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* header: the header from the free'd page.
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* next: the previous next pointer on the metadata page.
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*/
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BEGIN pg_free
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ARG fileid u_int32_t lu
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ARG pgno db_pgno_t lu
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POINTER meta_lsn DB_LSN * lu
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DBT header DBT s
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ARG next db_pgno_t lu
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END
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/*
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* BTREE-split: used to log a page split.
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*
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* left: the page number for the low-order contents.
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* llsn: the left page's original LSN.
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* right: the page number for the high-order contents.
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* rlsn: the right page's original LSN.
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* indx: the number of entries that went to the left page.
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* npgno: the next page number
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* nlsn: the next page's original LSN (or 0 if no next page).
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* pg: the split page's contents before the split.
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*/
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BEGIN split
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ARG fileid u_int32_t lu
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ARG left db_pgno_t lu
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POINTER llsn DB_LSN * lu
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ARG right db_pgno_t lu
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POINTER rlsn DB_LSN * lu
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ARG indx u_int32_t lu
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ARG npgno db_pgno_t lu
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POINTER nlsn DB_LSN * lu
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DBT pg DBT s
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END
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/*
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* BTREE-rsplit: used to log a reverse-split
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*
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* pgno: the page number of the page copied over the root.
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* pgdbt: the page being copied on the root page.
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* rootent: last entry on the root page.
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* rootlsn: the root page's original lsn.
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*/
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BEGIN rsplit
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ARG fileid u_int32_t lu
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ARG pgno db_pgno_t lu
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DBT pgdbt DBT s
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DBT rootent DBT s
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POINTER rootlsn DB_LSN * lu
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END
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/*
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* BTREE-adj: used to log the adjustment of an index.
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*
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* pgno: the page modified.
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* lsn: the page's original lsn.
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* indx: the index adjusted.
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* indx_copy: the index to copy if inserting.
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* is_insert: 0 if a delete, 1 if an insert.
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*/
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BEGIN adj
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ARG fileid u_int32_t lu
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ARG pgno db_pgno_t lu
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POINTER lsn DB_LSN * lu
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ARG indx u_int32_t lu
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ARG indx_copy u_int32_t lu
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ARG is_insert u_int32_t lu
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END
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/*
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* BTREE-cadjust: used to adjust the count change in an internal page.
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*
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* pgno: the page modified.
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* lsn: the page's original lsn.
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* indx: the index to be adjusted.
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* adjust: the signed adjustment.
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* total: if the total tree entries count should be adjusted
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*/
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BEGIN cadjust
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ARG fileid u_int32_t lu
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ARG pgno db_pgno_t lu
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POINTER lsn DB_LSN * lu
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ARG indx u_int32_t lu
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ARG adjust int32_t ld
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ARG total int32_t ld
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END
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/*
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* BTREE-cdel: used to log the intent-to-delete of a cursor record.
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*
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* pgno: the page modified.
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* lsn: the page's original lsn.
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* indx: the index to be deleted.
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*/
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BEGIN cdel
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ARG fileid u_int32_t lu
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ARG pgno db_pgno_t lu
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POINTER lsn DB_LSN * lu
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ARG indx u_int32_t lu
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END
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