1 /* Copyright (c) 2000-2002, 2004, 2006-2008 MySQL AB, 2009 Sun Microsystems, Inc. 2 Use is subject to license terms. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; version 2 of the License. 7 8 This program is distributed in the hope that it will be useful, 9 but WITHOUT ANY WARRANTY; without even the implied warranty of 10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License 14 along with this program; if not, write to the Free Software 15 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ 16 17 /* This file should be included when using merge_isam_funktions */ 18 19 #ifndef _myisammrg_h 20 #define _myisammrg_h 21 #ifdef __cplusplus 22 extern "C" { 23 #endif 24 25 #ifndef _my_base_h 26 #include <my_base.h> 27 #endif 28 #ifndef _myisam_h 29 #include <myisam.h> 30 #endif 31 32 #include <queues.h> 33 34 #define MYRG_NAME_EXT ".MRG" 35 #define MYRG_NAME_TMPEXT ".MRG_TMP" 36 37 /* In which table to INSERT rows */ 38 #define MERGE_INSERT_DISABLED 0 39 #define MERGE_INSERT_TO_FIRST 1 40 #define MERGE_INSERT_TO_LAST 2 41 42 extern TYPELIB merge_insert_method; 43 44 /* Param to/from myrg_info */ 45 46 typedef struct st_mymerge_info /* Struct from h_info */ 47 { 48 ulonglong records; /* Records in database */ 49 ulonglong deleted; /* Deleted records in database */ 50 ulonglong recpos; /* Pos for last used record */ 51 ulonglong data_file_length; 52 ulonglong dupp_key_pos; /* Offset of the Duplicate key in the merge table */ 53 uint reclength; /* Recordlength */ 54 int errkey; /* With key was dupplicated on err */ 55 uint options; /* HA_OPTION_... used */ 56 ulong *rec_per_key; /* for sql optimizing */ 57 } MYMERGE_INFO; 58 59 typedef struct st_myrg_table_info 60 { 61 struct st_myisam_info *table; 62 ulonglong file_offset; 63 } MYRG_TABLE; 64 65 typedef struct st_myrg_info 66 { 67 MYRG_TABLE *open_tables,*current_table,*end_table,*last_used_table; 68 ulonglong records; /* records in tables */ 69 ulonglong del; /* Removed records */ 70 ulonglong data_file_length; 71 ulong cache_size; 72 uint merge_insert_method; 73 uint tables,options,reclength,keys; 74 my_bool cache_in_use; 75 /* If MERGE children attached to parent. See top comment in ha_myisammrg.cc */ 76 my_bool children_attached; 77 LIST open_list; 78 QUEUE by_key; 79 ulong *rec_per_key_part; /* for sql optimizing */ 80 mysql_mutex_t mutex; 81 } MYRG_INFO; 82 83 84 /* Prototypes for merge-functions */ 85 86 extern int myrg_close(MYRG_INFO *file); 87 extern int myrg_delete(MYRG_INFO *file,const uchar *buff); 88 extern MYRG_INFO *myrg_open(const char *name,int mode,int wait_if_locked); 89 extern MYRG_INFO *myrg_parent_open(const char *parent_name, 90 int (*callback)(void*, const char*), 91 void *callback_param); 92 extern int myrg_attach_children(MYRG_INFO *m_info, int handle_locking, 93 MI_INFO *(*callback)(void*), 94 void *callback_param, 95 my_bool *need_compat_check); 96 extern int myrg_detach_children(MYRG_INFO *m_info); 97 extern int myrg_panic(enum ha_panic_function function); 98 extern int myrg_rfirst(MYRG_INFO *file,uchar *buf,int inx); 99 extern int myrg_rlast(MYRG_INFO *file,uchar *buf,int inx); 100 extern int myrg_rnext(MYRG_INFO *file,uchar *buf,int inx); 101 extern int myrg_rprev(MYRG_INFO *file,uchar *buf,int inx); 102 extern int myrg_rnext_same(MYRG_INFO *file,uchar *buf); 103 extern int myrg_rkey(MYRG_INFO *info,uchar *buf,int inx, const uchar *key, 104 key_part_map keypart_map, enum ha_rkey_function search_flag); 105 extern int myrg_rrnd(MYRG_INFO *file,uchar *buf,ulonglong pos); 106 extern int myrg_rsame(MYRG_INFO *file,uchar *record,int inx); 107 extern int myrg_update(MYRG_INFO *file,const uchar *old, 108 const uchar *new_rec); 109 extern int myrg_write(MYRG_INFO *info,const uchar *rec); 110 extern int myrg_status(MYRG_INFO *file,MYMERGE_INFO *x,int flag); 111 extern int myrg_lock_database(MYRG_INFO *file,int lock_type); 112 extern int myrg_create(const char *name, const char **table_names, 113 uint insert_method, my_bool fix_names); 114 extern int myrg_extra(MYRG_INFO *file,enum ha_extra_function function, 115 void *extra_arg); 116 extern int myrg_reset(MYRG_INFO *info); 117 extern void myrg_extrafunc(MYRG_INFO *info,invalidator_by_filename inv); 118 extern ha_rows myrg_records_in_range(MYRG_INFO *info, int inx, 119 key_range *min_key, key_range *max_key); 120 extern ha_rows myrg_records(MYRG_INFO *info); 121 122 extern ulonglong myrg_position(MYRG_INFO *info); 123 #ifdef __cplusplus 124 } 125 #endif 126 #endif 127