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[ .. KEMBALI ]
📄 aligned.h
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📄 aria_backup.h
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SAVING...
BERHASIL DIUBAH!
EDITING: heap.h
/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ /* This file should be included when using heap_database_functions */ /* Author: Michael Widenius */ #ifndef _heap_h #define _heap_h #ifdef __cplusplus extern "C" { #endif #ifndef _my_base_h #include <my_base.h> #endif #include <my_pthread.h> #include <thr_lock.h> #include "my_compare.h" #include "my_tree.h" /* defines used by heap-functions */ #define HP_MAX_LEVELS 4 /* 128^5 records is enough */ #define HP_PTRS_IN_NOD 128 /* struct used with heap_functions */ typedef struct st_heapinfo /* Struct from heap_info */ { ulong records; /* Records in database */ ulong deleted; /* Deleted records in database */ ulong max_records; ulonglong data_length; ulonglong index_length; uint reclength; /* Length of one record */ int errkey; ulonglong auto_increment; time_t create_time; } HEAPINFO; /* Structs used by heap-database-handler */ typedef struct st_heap_ptrs { uchar *blocks[HP_PTRS_IN_NOD]; /* pointers to HP_PTRS or records */ } HP_PTRS; struct st_level_info { /* Number of unused slots in *last_blocks HP_PTRS block (0 for 0th level) */ uint free_ptrs_in_block; /* Maximum number of records that can be 'contained' inside of each element of last_blocks array. For level 0 - 1, for level 1 - HP_PTRS_IN_NOD, for level 2 - HP_PTRS_IN_NOD^2 and so forth. */ ulong records_under_level; /* Ptr to last allocated HP_PTRS (or records buffer for level 0) on this level. */ HP_PTRS *last_blocks; }; /* Heap table records and hash index entries are stored in HP_BLOCKs. HP_BLOCK is used as a 'growable array' of fixed-size records. Size of record is recbuffer bytes. The internal representation is as follows: HP_BLOCK is a hierarchical structure of 'blocks'. A block at level 0 is an array records_in_block records. A block at higher level is an HP_PTRS structure with pointers to blocks at lower levels. At the highest level there is one top block. It is stored in HP_BLOCK::root. See hp_find_block for a description of how record pointer is obtained from its index. See hp_get_new_block */ typedef struct st_heap_block { HP_PTRS *root; /* Top-level block */ struct st_level_info level_info[HP_MAX_LEVELS+1]; uint levels; /* number of used levels */ uint recbuffer; /* Length of one saved record */ ulong records_in_block; /* Records in one heap-block */ ulong last_allocated; /* number of records there is allocated space for */ size_t alloc_size; /* Allocate blocks of this size */ } HP_BLOCK; struct st_heap_info; /* For reference */ typedef struct st_hp_keydef /* Key definition with open */ { uint flag; /* HA_NOSAME | HA_NULL_PART_KEY */ uint keysegs; /* Number of key-segment */ uint length; /* Length of key (automatic) */ uint8 algorithm; /* HASH / BTREE */ HA_KEYSEG *seg; HP_BLOCK block; /* Where keys are saved */ /* Number of buckets used in hash table. Used only to provide #records estimates for heap key scans. */ ha_rows hash_buckets; TREE rb_tree; int (*write_key)(struct st_heap_info *info, struct st_hp_keydef *keyinfo, const uchar *record, uchar *recpos); int (*delete_key)(struct st_heap_info *info, struct st_hp_keydef *keyinfo, const uchar *record, uchar *recpos, int flag); uint (*get_key_length)(struct st_hp_keydef *keydef, const uchar *key); } HP_KEYDEF; typedef struct st_heap_share { HP_BLOCK block; HP_KEYDEF *keydef; ulonglong data_length,index_length,max_table_size; ulonglong auto_increment; ulong min_records,max_records; /* Params to open */ ulong records; /* records */ ulong blength; /* records rounded up to 2^n */ ulong deleted; /* Deleted records in database */ uint key_stat_version; /* version to indicate insert/delete */ uint key_version; /* Updated on key change */ uint file_version; /* Update on clear */ uint reclength; /* Length of one record */ uint visible; /* Offset to the visible/deleted mark */ uint changed; uint keys,max_key_length; uint currently_disabled_keys; /* saved value from "keys" when disabled */ uint open_count; uchar *del_link; /* Link to next block with del. rec */ char * name; /* Name of "memory-file" */ time_t create_time; THR_LOCK lock; my_bool delete_on_close; my_bool internal; /* Internal temporary table */ LIST open_list; uint auto_key; uint auto_key_type; /* real type of the auto key segment */ } HP_SHARE; struct st_hp_hash_info; typedef struct st_heap_info { HP_SHARE *s; uchar *current_ptr; struct st_hp_hash_info *current_hash_ptr; ulong current_record,next_block; int lastinx,errkey; int mode; /* Mode of file (READONLY..) */ uint opt_flag,update; uchar *lastkey; /* Last used key with rkey */ uchar *recbuf; /* Record buffer for rb-tree keys */ enum ha_rkey_function last_find_flag; TREE_ELEMENT *parents[MAX_TREE_HEIGHT+1]; TREE_ELEMENT **last_pos; uint key_version; /* Version at last read */ uint file_version; /* Version at scan */ uint lastkey_len; my_bool implicit_emptied; THR_LOCK_DATA lock; LIST open_list; } HP_INFO; typedef struct st_heap_create_info { HP_KEYDEF *keydef; uint auto_key; /* keynr [1 - maxkey] for auto key */ uint auto_key_type; uint keys; uint reclength; ulong max_records; ulong min_records; ulonglong max_table_size; ulonglong auto_increment; my_bool with_auto_increment; my_bool internal_table; /* TRUE if heap_create should 'pin' the created share by setting open_count to 1. Is only looked at if not internal_table. */ my_bool pin_share; } HP_CREATE_INFO; /* Prototypes for heap-functions */ extern HP_INFO *heap_open(const char *name, int mode); extern HP_INFO *heap_open_from_share(HP_SHARE *share, int mode); extern HP_INFO *heap_open_from_share_and_register(HP_SHARE *share, int mode); extern void heap_release_share(HP_SHARE *share, my_bool internal_table); extern int heap_close(HP_INFO *info); extern int heap_write(HP_INFO *info,const uchar *buff); extern int heap_update(HP_INFO *info,const uchar *old,const uchar *newdata); extern int heap_rrnd(HP_INFO *info,uchar *buf,uchar *pos); extern int heap_scan_init(HP_INFO *info); extern int heap_scan(HP_INFO *info, uchar *record); extern int heap_delete(HP_INFO *info,const uchar *buff); extern int heap_info(HP_INFO *info,HEAPINFO *x,int flag); extern int heap_create(const char *name, HP_CREATE_INFO *create_info, HP_SHARE **share, my_bool *created_new_share); extern int heap_delete_table(const char *name); extern void heap_drop_table(HP_INFO *info); extern int heap_extra(HP_INFO *info,enum ha_extra_function function); extern int heap_reset(HP_INFO *info); extern int heap_rename(const char *old_name,const char *new_name); extern int heap_panic(enum ha_panic_function flag); extern int heap_rsame(HP_INFO *info,uchar *record,int inx); extern int heap_rnext(HP_INFO *info,uchar *record); extern int heap_rprev(HP_INFO *info,uchar *record); extern int heap_rfirst(HP_INFO *info,uchar *record,int inx); extern int heap_rlast(HP_INFO *info,uchar *record,int inx); extern void heap_clear(HP_INFO *info); extern void heap_clear_keys(HP_INFO *info); extern int heap_disable_indexes(HP_INFO *info); extern int heap_enable_indexes(HP_INFO *info); extern int heap_indexes_are_disabled(HP_INFO *info); extern void heap_update_auto_increment(HP_INFO *info, const uchar *record); ha_rows hp_rb_records_in_range(HP_INFO *info, int inx, const key_range *min_key, const key_range *max_key); int hp_panic(enum ha_panic_function flag); int heap_rkey(HP_INFO *info, uchar *record, int inx, const uchar *key, key_part_map keypart_map, enum ha_rkey_function find_flag); extern uchar * heap_find(HP_INFO *info,int inx,const uchar *key); extern int heap_check_heap(const HP_INFO *info, my_bool print_status); extern uchar *heap_position(HP_INFO *info); /* The following is for programs that uses the old HEAP interface where pointer to rows where a long instead of a (uchar*). */ #if defined(WANT_OLD_HEAP_VERSION) || defined(OLD_HEAP_VERSION) extern int heap_rrnd_old(HP_INFO *info,uchar *buf,ulong pos); extern ulong heap_position_old(HP_INFO *info); #endif #ifdef OLD_HEAP_VERSION typedef ulong HEAP_PTR; #define heap_position(A) heap_position_old(A) #define heap_rrnd(A,B,C) heap_rrnd_old(A,B,C) #else typedef uchar *HEAP_PTR; #endif #ifdef __cplusplus } #endif #endif
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