38
39
/** B-tree search information for the adaptive hash index */
39
40
typedef struct btr_search_struct btr_search_t;
42
/** @brief The latch protecting the adaptive search system
44
This latch protects the
46
(2) columns of a record to which we have a pointer in the hash index;
50
(3) next record offset field in a record;
51
(4) next or previous records on the same page.
53
Bear in mind (3) and (4) when using the hash index.
55
extern rw_lock_t* btr_search_latch_temp;
57
/** The latch protecting the adaptive search system */
58
#define btr_search_latch (*btr_search_latch_temp)
60
/** Flag: has the search system been enabled?
61
Protected by btr_search_latch. */
62
extern char btr_search_enabled;
64
#ifdef UNIV_BLOB_DEBUG
65
# include "buf0types.h"
66
/** An index->blobs entry for keeping track of off-page column references */
67
typedef struct btr_blob_dbg_struct btr_blob_dbg_t;
69
/** Insert to index->blobs a reference to an off-page column.
70
@param index the index tree
71
@param b the reference
72
@param ctx context (for logging) */
75
btr_blob_dbg_rbt_insert(
76
/*====================*/
77
dict_index_t* index, /*!< in/out: index tree */
78
const btr_blob_dbg_t* b, /*!< in: the reference */
79
const char* ctx) /*!< in: context (for logging) */
80
__attribute__((nonnull));
82
/** Remove from index->blobs a reference to an off-page column.
83
@param index the index tree
84
@param b the reference
85
@param ctx context (for logging) */
88
btr_blob_dbg_rbt_delete(
89
/*====================*/
90
dict_index_t* index, /*!< in/out: index tree */
91
const btr_blob_dbg_t* b, /*!< in: the reference */
92
const char* ctx) /*!< in: context (for logging) */
93
__attribute__((nonnull));
95
/**************************************************************//**
96
Add to index->blobs any references to off-page columns from a record.
97
@return number of references added */
100
btr_blob_dbg_add_rec(
101
/*=================*/
102
const rec_t* rec, /*!< in: record */
103
dict_index_t* index, /*!< in/out: index */
104
const ulint* offsets,/*!< in: offsets */
105
const char* ctx) /*!< in: context (for logging) */
106
__attribute__((nonnull));
107
/**************************************************************//**
108
Remove from index->blobs any references to off-page columns from a record.
109
@return number of references removed */
112
btr_blob_dbg_remove_rec(
113
/*====================*/
114
const rec_t* rec, /*!< in: record */
115
dict_index_t* index, /*!< in/out: index */
116
const ulint* offsets,/*!< in: offsets */
117
const char* ctx) /*!< in: context (for logging) */
118
__attribute__((nonnull));
119
/**************************************************************//**
120
Count and add to index->blobs any references to off-page columns
121
from records on a page.
122
@return number of references added */
127
const page_t* page, /*!< in: rewritten page */
128
dict_index_t* index, /*!< in/out: index */
129
const char* ctx) /*!< in: context (for logging) */
130
__attribute__((nonnull));
131
/**************************************************************//**
132
Count and remove from index->blobs any references to off-page columns
133
from records on a page.
134
Used when reorganizing a page, before copying the records.
135
@return number of references removed */
140
const page_t* page, /*!< in: b-tree page */
141
dict_index_t* index, /*!< in/out: index */
142
const char* ctx) /*!< in: context (for logging) */
143
__attribute__((nonnull));
144
/**************************************************************//**
145
Restore in index->blobs any references to off-page columns
146
Used when page reorganize fails due to compressed page overflow. */
149
btr_blob_dbg_restore(
150
/*=================*/
151
const page_t* npage, /*!< in: page that failed to compress */
152
const page_t* page, /*!< in: copy of original page */
153
dict_index_t* index, /*!< in/out: index */
154
const char* ctx) /*!< in: context (for logging) */
155
__attribute__((nonnull));
157
/** Operation that processes the BLOB references of an index record
158
@param[in] rec record on index page
159
@param[in/out] index the index tree of the record
160
@param[in] offsets rec_get_offsets(rec,index)
161
@param[in] ctx context (for logging)
162
@return number of BLOB references processed */
163
typedef ulint (*btr_blob_dbg_op_f)
164
(const rec_t* rec,dict_index_t* index,const ulint* offsets,const char* ctx);
166
/**************************************************************//**
167
Count and process all references to off-page columns on a page.
168
@return number of references processed */
173
const page_t* page, /*!< in: B-tree leaf page */
174
const rec_t* rec, /*!< in: record to start from
175
(NULL to process the whole page) */
176
dict_index_t* index, /*!< in/out: index */
177
const char* ctx, /*!< in: context (for logging) */
178
const btr_blob_dbg_op_f op) /*!< in: operation on records */
179
__attribute__((nonnull(1,3,4,5)));
180
#else /* UNIV_BLOB_DEBUG */
181
# define btr_blob_dbg_add_rec(rec, index, offsets, ctx) ((void) 0)
182
# define btr_blob_dbg_add(page, index, ctx) ((void) 0)
183
# define btr_blob_dbg_remove_rec(rec, index, offsets, ctx) ((void) 0)
184
# define btr_blob_dbg_remove(page, index, ctx) ((void) 0)
185
# define btr_blob_dbg_restore(npage, page, index, ctx) ((void) 0)
186
# define btr_blob_dbg_op(page, rec, index, ctx, op) ((void) 0)
187
#endif /* UNIV_BLOB_DEBUG */
41
189
/** The size of a reference to data stored on a different page.
42
190
The reference is stored at the end of the prefix of the field
43
191
in the index record. */
added
removed
storage/innodb_plugin/include/btr0types.h
