| 1 | /*- |
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| 2 | * See the file LICENSE for redistribution information. |
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| 3 | * |
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| 4 | * Copyright (c) 1996, 1997, 1998, 1999, 2000 |
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| 5 | * Sleepycat Software. All rights reserved. |
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| 6 | * |
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| 7 | * $Id: btree.src,v 1.1.1.2 2002-02-11 16:29:58 ghudson Exp $ |
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| 8 | */ |
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| 9 | |
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| 10 | PREFIX bam |
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| 11 | |
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| 12 | INCLUDE #include "db_config.h" |
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| 13 | INCLUDE |
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| 14 | INCLUDE #ifndef NO_SYSTEM_INCLUDES |
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| 15 | INCLUDE #include <sys/types.h> |
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| 16 | INCLUDE |
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| 17 | INCLUDE #include <ctype.h> |
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| 18 | INCLUDE #include <errno.h> |
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| 19 | INCLUDE #include <string.h> |
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| 20 | INCLUDE #endif |
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| 21 | INCLUDE |
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| 22 | INCLUDE #include "db_int.h" |
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| 23 | INCLUDE #include "db_page.h" |
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| 24 | INCLUDE #include "db_dispatch.h" |
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| 25 | INCLUDE #include "db_am.h" |
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| 26 | INCLUDE #include "btree.h" |
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| 27 | INCLUDE #include "txn.h" |
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| 28 | INCLUDE |
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| 29 | |
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| 30 | /* |
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| 31 | * BTREE-pg_alloc: used to record allocating a new page. |
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| 32 | * |
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| 33 | * meta_lsn: the meta-data page's original lsn. |
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| 34 | * alloc_lsn: the meta-data page's original allocation lsn. |
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| 35 | * page_lsn: the allocated page's original lsn. |
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| 36 | * pgno: the page allocated. |
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| 37 | * next: the next page on the free list. |
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| 38 | */ |
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| 39 | DEPRECATED pg_alloc1 51 |
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| 40 | ARG fileid int32_t ld |
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| 41 | POINTER meta_lsn DB_LSN * lu |
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| 42 | POINTER page_lsn DB_LSN * lu |
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| 43 | ARG pgno db_pgno_t lu |
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| 44 | ARG ptype u_int32_t lu |
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| 45 | ARG next db_pgno_t lu |
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| 46 | END |
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| 47 | |
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| 48 | BEGIN pg_alloc 60 |
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| 49 | ARG fileid int32_t ld |
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| 50 | POINTER meta_lsn DB_LSN * lu |
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| 51 | POINTER alloc_lsn DB_LSN * lu |
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| 52 | POINTER page_lsn DB_LSN * lu |
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| 53 | ARG pgno db_pgno_t lu |
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| 54 | ARG ptype u_int32_t lu |
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| 55 | ARG next db_pgno_t lu |
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| 56 | END |
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| 57 | |
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| 58 | /* |
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| 59 | * BTREE-pg_free: used to record freeing a page. |
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| 60 | * |
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| 61 | * pgno: the page being freed. |
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| 62 | * meta_lsn: the meta-data page's original lsn. |
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| 63 | * alloc_lsn: the meta-data page's original allocation lsn. |
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| 64 | * header: the header from the free'd page. |
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| 65 | * next: the previous next pointer on the metadata page. |
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| 66 | */ |
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| 67 | DEPRECATED pg_free1 52 |
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| 68 | ARG fileid int32_t ld |
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| 69 | ARG pgno db_pgno_t lu |
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| 70 | POINTER meta_lsn DB_LSN * lu |
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| 71 | DBT header DBT s |
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| 72 | ARG next db_pgno_t lu |
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| 73 | END |
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| 74 | |
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| 75 | BEGIN pg_free 61 |
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| 76 | ARG fileid int32_t ld |
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| 77 | ARG pgno db_pgno_t lu |
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| 78 | POINTER meta_lsn DB_LSN * lu |
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| 79 | POINTER alloc_lsn DB_LSN * lu |
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| 80 | DBT header DBT s |
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| 81 | ARG next db_pgno_t lu |
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| 82 | END |
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| 83 | |
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| 84 | /* |
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| 85 | * BTREE-split: used to log a page split. |
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| 86 | * |
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| 87 | * left: the page number for the low-order contents. |
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| 88 | * llsn: the left page's original LSN. |
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| 89 | * right: the page number for the high-order contents. |
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| 90 | * rlsn: the right page's original LSN. |
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| 91 | * indx: the number of entries that went to the left page. |
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| 92 | * npgno: the next page number |
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| 93 | * nlsn: the next page's original LSN (or 0 if no next page). |
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| 94 | * pg: the split page's contents before the split. |
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| 95 | */ |
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| 96 | DEPRECATED split1 53 |
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| 97 | ARG fileid int32_t ld |
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| 98 | ARG left db_pgno_t lu |
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| 99 | POINTER llsn DB_LSN * lu |
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| 100 | ARG right db_pgno_t lu |
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| 101 | POINTER rlsn DB_LSN * lu |
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| 102 | ARG indx u_int32_t lu |
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| 103 | ARG npgno db_pgno_t lu |
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| 104 | POINTER nlsn DB_LSN * lu |
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| 105 | DBT pg DBT s |
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| 106 | END |
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| 107 | |
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| 108 | /* |
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| 109 | * BTREE-split: used to log a page split. |
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| 110 | * |
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| 111 | * left: the page number for the low-order contents. |
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| 112 | * llsn: the left page's original LSN. |
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| 113 | * right: the page number for the high-order contents. |
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| 114 | * rlsn: the right page's original LSN. |
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| 115 | * indx: the number of entries that went to the left page. |
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| 116 | * npgno: the next page number |
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| 117 | * npgno: the next page number |
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| 118 | * nlsn: the next page's original LSN (or 0 if no next page). |
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| 119 | * root_pgno: the root page number |
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| 120 | * pg: the split page's contents before the split. |
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| 121 | * opflags: SPL_NRECS: if splitting a tree that maintains a record count. |
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| 122 | */ |
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| 123 | BEGIN split 62 |
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| 124 | ARG fileid int32_t ld |
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| 125 | ARG left db_pgno_t lu |
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| 126 | POINTER llsn DB_LSN * lu |
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| 127 | ARG right db_pgno_t lu |
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| 128 | POINTER rlsn DB_LSN * lu |
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| 129 | ARG indx u_int32_t lu |
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| 130 | ARG npgno db_pgno_t lu |
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| 131 | POINTER nlsn DB_LSN * lu |
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| 132 | ARG root_pgno db_pgno_t lu |
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| 133 | DBT pg DBT s |
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| 134 | ARG opflags u_int32_t lu |
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| 135 | END |
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| 136 | |
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| 137 | /* |
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| 138 | * BTREE-rsplit: used to log a reverse-split |
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| 139 | * |
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| 140 | * pgno: the page number of the page copied over the root. |
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| 141 | * pgdbt: the page being copied on the root page. |
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| 142 | * nrec: the tree's record count. |
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| 143 | * rootent: last entry on the root page. |
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| 144 | * rootlsn: the root page's original lsn. |
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| 145 | */ |
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| 146 | DEPRECATED rsplit1 54 |
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| 147 | ARG fileid int32_t ld |
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| 148 | ARG pgno db_pgno_t lu |
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| 149 | DBT pgdbt DBT s |
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| 150 | ARG nrec db_pgno_t lu |
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| 151 | DBT rootent DBT s |
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| 152 | POINTER rootlsn DB_LSN * lu |
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| 153 | END |
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| 154 | |
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| 155 | /* |
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| 156 | * BTREE-rsplit: used to log a reverse-split |
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| 157 | * |
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| 158 | * pgno: the page number of the page copied over the root. |
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| 159 | * pgdbt: the page being copied on the root page. |
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| 160 | * root_pgno: the root page number. |
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| 161 | * nrec: the tree's record count. |
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| 162 | * rootent: last entry on the root page. |
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| 163 | * rootlsn: the root page's original lsn. |
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| 164 | */ |
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| 165 | BEGIN rsplit 63 |
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| 166 | ARG fileid int32_t ld |
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| 167 | ARG pgno db_pgno_t lu |
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| 168 | DBT pgdbt DBT s |
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| 169 | ARG root_pgno db_pgno_t lu |
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| 170 | ARG nrec db_pgno_t lu |
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| 171 | DBT rootent DBT s |
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| 172 | POINTER rootlsn DB_LSN * lu |
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| 173 | END |
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| 174 | |
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| 175 | /* |
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| 176 | * BTREE-adj: used to log the adjustment of an index. |
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| 177 | * |
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| 178 | * pgno: the page modified. |
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| 179 | * lsn: the page's original lsn. |
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| 180 | * indx: the index adjusted. |
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| 181 | * indx_copy: the index to copy if inserting. |
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| 182 | * is_insert: 0 if a delete, 1 if an insert. |
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| 183 | */ |
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| 184 | BEGIN adj 55 |
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| 185 | ARG fileid int32_t ld |
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| 186 | ARG pgno db_pgno_t lu |
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| 187 | POINTER lsn DB_LSN * lu |
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| 188 | ARG indx u_int32_t lu |
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| 189 | ARG indx_copy u_int32_t lu |
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| 190 | ARG is_insert u_int32_t lu |
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| 191 | END |
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| 192 | |
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| 193 | /* |
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| 194 | * BTREE-cadjust: used to adjust the count change in an internal page. |
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| 195 | * |
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| 196 | * pgno: the page modified. |
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| 197 | * lsn: the page's original lsn. |
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| 198 | * indx: the index to be adjusted. |
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| 199 | * adjust: the signed adjustment. |
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| 200 | * opflags: CAD_UPDATEROOT: if root page count was adjusted. |
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| 201 | */ |
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| 202 | BEGIN cadjust 56 |
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| 203 | ARG fileid int32_t ld |
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| 204 | ARG pgno db_pgno_t lu |
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| 205 | POINTER lsn DB_LSN * lu |
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| 206 | ARG indx u_int32_t lu |
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| 207 | ARG adjust int32_t ld |
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| 208 | ARG opflags u_int32_t lu |
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| 209 | END |
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| 210 | |
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| 211 | /* |
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| 212 | * BTREE-cdel: used to log the intent-to-delete of a cursor record. |
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| 213 | * |
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| 214 | * pgno: the page modified. |
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| 215 | * lsn: the page's original lsn. |
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| 216 | * indx: the index to be deleted. |
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| 217 | */ |
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| 218 | BEGIN cdel 57 |
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| 219 | ARG fileid int32_t ld |
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| 220 | ARG pgno db_pgno_t lu |
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| 221 | POINTER lsn DB_LSN * lu |
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| 222 | ARG indx u_int32_t lu |
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| 223 | END |
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| 224 | |
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| 225 | /* |
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| 226 | * BTREE-repl: used to log the replacement of an item. |
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| 227 | * |
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| 228 | * pgno: the page modified. |
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| 229 | * lsn: the page's original lsn. |
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| 230 | * orig: the original data. |
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| 231 | * new: the replacement data. |
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| 232 | * duplicate: the prefix of the replacement that matches the original. |
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| 233 | */ |
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| 234 | BEGIN repl 58 |
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| 235 | ARG fileid int32_t ld |
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| 236 | ARG pgno db_pgno_t lu |
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| 237 | POINTER lsn DB_LSN * lu |
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| 238 | ARG indx u_int32_t lu |
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| 239 | ARG isdeleted u_int32_t lu |
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| 240 | DBT orig DBT s |
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| 241 | DBT repl DBT s |
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| 242 | ARG prefix u_int32_t lu |
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| 243 | ARG suffix u_int32_t lu |
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| 244 | END |
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| 245 | |
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| 246 | /* |
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| 247 | * BTREE-root: log the assignment of a root btree page. |
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| 248 | */ |
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| 249 | BEGIN root 59 |
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| 250 | ARG fileid int32_t ld |
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| 251 | ARG meta_pgno db_pgno_t lu |
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| 252 | ARG root_pgno db_pgno_t lu |
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| 253 | POINTER meta_lsn DB_LSN * lu |
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| 254 | END |
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| 255 | |
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| 256 | /* |
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| 257 | * BTREE-curadj: undo cursor adjustments on abort txn. |
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| 258 | * Should only be processed during DB_TXN_ABORT. |
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| 259 | * NOTE: the first_indx field gets used to hold |
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| 260 | * signed index adjustment in one case. |
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| 261 | * care should be taken if its size is changed. |
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| 262 | */ |
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| 263 | BEGIN curadj 64 |
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| 264 | /* Fileid of db effected. */ |
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| 265 | ARG fileid int32_t ld |
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| 266 | /* Which adjustment. */ |
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| 267 | ARG mode db_ca_mode ld |
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| 268 | /* Page entry is from. */ |
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| 269 | ARG from_pgno db_pgno_t lu |
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| 270 | /* Page entry went to. */ |
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| 271 | ARG to_pgno db_pgno_t lu |
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| 272 | /* Left page of root split. */ |
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| 273 | ARG left_pgno db_pgno_t lu |
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| 274 | /* First index of dup set. Also used as adjustment. */ |
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| 275 | ARG first_indx u_int32_t lu |
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| 276 | /* Index entry is from. */ |
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| 277 | ARG from_indx u_int32_t lu |
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| 278 | /* Index where entry went. */ |
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| 279 | ARG to_indx u_int32_t lu |
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| 280 | END |
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