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HP_PTRS *root; /* Top-level block */
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struct st_level_info level_info[HP_MAX_LEVELS+1];
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uint32_t levels; /* number of used levels */
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uint32_t records_in_block; /* Records in one heap-block */
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uint32_t recbuffer; /* Length of one saved record */
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uint32_t last_allocated; /* number of records there is allocated space for */
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uint levels; /* number of used levels */
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uint records_in_block; /* Records in one heap-block */
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uint recbuffer; /* Length of one saved record */
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ulong last_allocated; /* number of records there is allocated space for */
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struct st_heap_info; /* For referense */
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typedef struct st_hp_keydef /* Key definition with open */
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uint32_t flag; /* HA_NOSAME | HA_NULL_PART_KEY */
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uint32_t keysegs; /* Number of key-segment */
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uint32_t length; /* Length of key (automatic) */
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uint8_t algorithm; /* HASH / BTREE */
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uint flag; /* HA_NOSAME | HA_NULL_PART_KEY */
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uint keysegs; /* Number of key-segment */
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uint length; /* Length of key (automatic) */
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uint8 algorithm; /* HASH / BTREE */
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HP_BLOCK block; /* Where keys are saved */
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ha_rows hash_buckets;
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int (*write_key)(struct st_heap_info *info, struct st_hp_keydef *keyinfo,
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const unsigned char *record, unsigned char *recpos);
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const uchar *record, uchar *recpos);
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int (*delete_key)(struct st_heap_info *info, struct st_hp_keydef *keyinfo,
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const unsigned char *record, unsigned char *recpos, int flag);
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uint32_t (*get_key_length)(struct st_hp_keydef *keydef, const unsigned char *key);
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const uchar *record, uchar *recpos, int flag);
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uint (*get_key_length)(struct st_hp_keydef *keydef, const uchar *key);
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typedef struct st_heap_columndef /* column information */
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int16_t type; /* en_fieldtype */
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uint32_t length; /* length of field */
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uint32_t offset; /* Offset to position in row */
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uint8_t null_bit; /* If column may be 0 */
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uint16_t null_pos; /* position for null marker */
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uint8_t length_bytes; /* length of the size, 1 o 2 bytes */
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typedef struct st_heap_dataspace /* control data for data space */
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typedef struct st_heap_share
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uint32_t chunk_count; /* Total chunks ever allocated in this dataspace */
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uint32_t del_chunk_count; /* Deleted chunks count */
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unsigned char *del_link; /* Link to last deleted chunk */
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uint32_t chunk_length; /* Total length of one chunk */
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uint32_t chunk_dataspace_length; /* Length of payload that will be placed into one chunk */
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uint32_t offset_status; /* Offset of the status flag relative to the chunk start */
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uint32_t offset_link; /* Offset of the linking pointer relative to the chunk start */
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uint32_t is_variable_size; /* Test whether records have variable size and so "next" pointer */
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uint64_t total_data_length; /* Total size allocated within this data space */
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typedef struct st_heap_share
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HP_KEYDEF *keydef;
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HP_COLUMNDEF *column_defs;
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HP_DATASPACE recordspace; /* Describes "block", which contains actual records */
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uint32_t min_records,max_records; /* Params to open */
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uint64_t index_length,max_table_size;
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uint32_t key_stat_version; /* version to indicate insert/delete */
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uint32_t records; /* Actual record (row) count */
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uint32_t blength; /* used_chunk_count rounded up to 2^n */
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uint32_t fixed_data_length; /* Length of record's fixed part, which contains keys and always fits into the first chunk */
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uint32_t fixed_column_count; /* Number of columns stored in fixed_data_length */
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uint32_t keys,max_key_length;
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uint32_t column_count;
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uint32_t currently_disabled_keys; /* saved value from "keys" when disabled */
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ulong min_records,max_records; /* Params to open */
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ulonglong data_length,index_length,max_table_size;
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uint key_stat_version; /* version to indicate insert/delete */
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uint records; /* records */
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uint blength; /* records rounded up to 2^n */
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uint deleted; /* Deleted records in database */
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uint reclength; /* Length of one record */
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uint keys,max_key_length;
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uint currently_disabled_keys; /* saved value from "keys" when disabled */
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uchar *del_link; /* Link to next block with del. rec */
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char * name; /* Name of "memory-file" */
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pthread_mutex_t intern_lock; /* Locking for use with _locking */
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bool delete_on_close;
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my_bool delete_on_close;
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uint32_t auto_key_type; /* real type of the auto key segment */
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uint64_t auto_increment;
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uint auto_key_type; /* real type of the auto key segment */
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ulonglong auto_increment;
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struct st_hp_hash_info;
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extern HP_INFO *heap_open_from_share(HP_SHARE *share, int mode);
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extern HP_INFO *heap_open_from_share_and_register(HP_SHARE *share, int mode);
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extern int heap_close(HP_INFO *info);
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extern int heap_write(HP_INFO *info,const unsigned char *record);
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extern int heap_update(HP_INFO *info,const unsigned char *old_record,const unsigned char *new_record);
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extern int heap_rrnd(HP_INFO *info,unsigned char *buf,unsigned char *pos);
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extern int heap_write(HP_INFO *info,const uchar *buff);
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extern int heap_update(HP_INFO *info,const uchar *old,const uchar *newdata);
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extern int heap_rrnd(HP_INFO *info,uchar *buf,uchar *pos);
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extern int heap_scan_init(HP_INFO *info);
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extern int heap_scan(register HP_INFO *info, unsigned char *record);
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extern int heap_delete(HP_INFO *info,const unsigned char *buff);
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extern int heap_scan(register HP_INFO *info, uchar *record);
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extern int heap_delete(HP_INFO *info,const uchar *buff);
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extern int heap_info(HP_INFO *info,HEAPINFO *x,int flag);
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extern int heap_create(const char *name, uint32_t keys, HP_KEYDEF *keydef,
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uint32_t columns, HP_COLUMNDEF *columndef,
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uint32_t max_key_fieldnr, uint32_t key_part_size,
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uint32_t reclength, uint32_t keys_memory_size,
236
uint32_t max_records, uint32_t min_records,
237
HP_CREATE_INFO *create_info, HP_SHARE **share);
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extern int heap_create(const char *name, uint keys, HP_KEYDEF *keydef,
203
uint reclength, ulong max_records, ulong min_records,
204
HP_CREATE_INFO *create_info, HP_SHARE **share);
239
205
extern int heap_delete_table(const char *name);
240
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extern void heap_drop_table(HP_INFO *info);
241
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extern int heap_extra(HP_INFO *info,enum ha_extra_function function);
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extern int heap_reset(HP_INFO *info);
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extern int heap_rename(const char *old_name,const char *new_name);
244
210
extern int heap_panic(enum ha_panic_function flag);
245
extern int heap_rsame(HP_INFO *info,unsigned char *record,int inx);
246
extern int heap_rnext(HP_INFO *info,unsigned char *record);
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extern int heap_rprev(HP_INFO *info,unsigned char *record);
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extern int heap_rfirst(HP_INFO *info,unsigned char *record,int inx);
249
extern int heap_rlast(HP_INFO *info,unsigned char *record,int inx);
211
extern int heap_rsame(HP_INFO *info,uchar *record,int inx);
212
extern int heap_rnext(HP_INFO *info,uchar *record);
213
extern int heap_rprev(HP_INFO *info,uchar *record);
214
extern int heap_rfirst(HP_INFO *info,uchar *record,int inx);
215
extern int heap_rlast(HP_INFO *info,uchar *record,int inx);
250
216
extern void heap_clear(HP_INFO *info);
251
217
extern void heap_clear_keys(HP_INFO *info);
252
218
extern int heap_disable_indexes(HP_INFO *info);
253
219
extern int heap_enable_indexes(HP_INFO *info);
254
220
extern int heap_indexes_are_disabled(HP_INFO *info);
255
extern void heap_update_auto_increment(HP_INFO *info, const unsigned char *record);
221
extern void heap_update_auto_increment(HP_INFO *info, const uchar *record);
256
222
ha_rows hp_rb_records_in_range(HP_INFO *info, int inx, key_range *min_key,
257
223
key_range *max_key);
258
224
int hp_panic(enum ha_panic_function flag);
259
int heap_rkey(HP_INFO *info, unsigned char *record, int inx, const unsigned char *key,
225
int heap_rkey(HP_INFO *info, uchar *record, int inx, const uchar *key,
260
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key_part_map keypart_map, enum ha_rkey_function find_flag);
261
extern unsigned char * heap_find(HP_INFO *info,int inx,const unsigned char *key);
262
extern int heap_check_heap(HP_INFO *info, bool print_status);
263
extern unsigned char *heap_position(HP_INFO *info);
227
extern uchar * heap_find(HP_INFO *info,int inx,const uchar *key);
228
extern int heap_check_heap(HP_INFO *info, my_bool print_status);
229
extern uchar *heap_position(HP_INFO *info);
265
231
/* The following is for programs that uses the old HEAP interface where
266
pointer to rows where a long instead of a (unsigned char*).
232
pointer to rows where a long instead of a (uchar*).
269
235
#if defined(WANT_OLD_HEAP_VERSION) || defined(OLD_HEAP_VERSION)
270
extern int heap_rrnd_old(HP_INFO *info,unsigned char *buf,uint32_t pos);
271
extern uint32_t heap_position_old(HP_INFO *info);
236
extern int heap_rrnd_old(HP_INFO *info,uchar *buf,ulong pos);
237
extern ulong heap_position_old(HP_INFO *info);
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239
#ifdef OLD_HEAP_VERSION
274
typedef uint32_t HEAP_PTR;
240
typedef ulong HEAP_PTR;
275
241
#define heap_position(A) heap_position_old(A)
276
242
#define heap_rrnd(A,B,C) heap_rrnd_old(A,B,C)
278
typedef unsigned char *HEAP_PTR;
244
typedef uchar *HEAP_PTR;
281
247
#ifdef __cplusplus