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Diffstat (limited to '')
| -rw-r--r-- | include/myisammrg.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/include/myisammrg.h b/include/myisammrg.h new file mode 100644 index 00000000..b3bca218 --- /dev/null +++ b/include/myisammrg.h @@ -0,0 +1,129 @@ +/* Copyright (c) 2000-2002, 2004, 2006-2008 MySQL AB, 2009 Sun Microsystems, Inc. + Use is subject to license terms. + + 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 merge_isam_functions */ + +#ifndef _myisammrg_h +#define _myisammrg_h +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef _my_base_h +#include <my_base.h> +#endif +#ifndef _myisam_h +#include <myisam.h> +#endif + +#include <queues.h> + +#define MYRG_NAME_EXT ".MRG" +#define MYRG_NAME_TMPEXT ".MRG_TMP" + +/* In which table to INSERT rows */ +#define MERGE_INSERT_DISABLED 0 +#define MERGE_INSERT_TO_FIRST 1 +#define MERGE_INSERT_TO_LAST 2 + +extern TYPELIB merge_insert_method; + + /* Param to/from myrg_info */ + +typedef struct st_mymerge_info /* Struct from h_info */ +{ + ulonglong records; /* Records in database */ + ulonglong deleted; /* Deleted records in database */ + ulonglong recpos; /* Pos for last used record */ + ulonglong data_file_length; + ulonglong dupp_key_pos; /* Offset of the Duplicate key in the merge table */ + uint reclength; /* Recordlength */ + int errkey; /* With key was duplicated on err */ + uint options; /* HA_OPTION_... used */ + ulong *rec_per_key; /* for sql optimizing */ +} MYMERGE_INFO; + +typedef struct st_myrg_table_info +{ + struct st_myisam_info *table; + ulonglong file_offset; +} MYRG_TABLE; + +typedef struct st_myrg_info +{ + MYRG_TABLE *open_tables,*current_table,*end_table,*last_used_table; + ulonglong records; /* records in tables */ + ulonglong del; /* Removed records */ + ulonglong data_file_length; + ulong cache_size; + uint merge_insert_method; + uint tables,options,reclength,keys; + uint key_parts; + my_bool cache_in_use; + /* If MERGE children attached to parent. See top comment in ha_myisammrg.cc */ + my_bool children_attached; + LIST open_list; + QUEUE by_key; + ulong *rec_per_key_part; /* for sql optimizing */ + mysql_mutex_t mutex; +} MYRG_INFO; + + + /* Prototypes for merge-functions */ + +extern int myrg_close(MYRG_INFO *file); +extern int myrg_delete(MYRG_INFO *file,const uchar *buff); +extern MYRG_INFO *myrg_open(const char *name,int mode,int wait_if_locked); +extern MYRG_INFO *myrg_parent_open(const char *parent_name, + int (*callback)(void*, const char*), + void *callback_param); +extern int myrg_attach_children(MYRG_INFO *m_info, int handle_locking, + MI_INFO *(*callback)(void*), + void *callback_param, + my_bool *need_compat_check); +extern int myrg_detach_children(MYRG_INFO *m_info); +extern int myrg_panic(enum ha_panic_function function); +extern int myrg_rfirst(MYRG_INFO *file,uchar *buf,int inx); +extern int myrg_rlast(MYRG_INFO *file,uchar *buf,int inx); +extern int myrg_rnext(MYRG_INFO *file,uchar *buf,int inx); +extern int myrg_rprev(MYRG_INFO *file,uchar *buf,int inx); +extern int myrg_rnext_same(MYRG_INFO *file,uchar *buf); +extern int myrg_rkey(MYRG_INFO *info,uchar *buf,int inx, const uchar *key, + key_part_map keypart_map, enum ha_rkey_function search_flag); +extern int myrg_rrnd(MYRG_INFO *file,uchar *buf,ulonglong pos); +extern int myrg_rsame(MYRG_INFO *file,uchar *record,int inx); +extern int myrg_update(MYRG_INFO *file,const uchar *old, + const uchar *new_rec); +extern int myrg_write(MYRG_INFO *info,const uchar *rec); +extern int myrg_status(MYRG_INFO *file,MYMERGE_INFO *x,int flag); +extern int myrg_lock_database(MYRG_INFO *file,int lock_type); +extern int myrg_create(const char *name, const char **table_names, + uint insert_method, my_bool fix_names); +extern int myrg_extra(MYRG_INFO *file,enum ha_extra_function function, + void *extra_arg); +extern int myrg_reset(MYRG_INFO *info); +extern void myrg_extrafunc(MYRG_INFO *info,invalidator_by_filename inv); +extern ha_rows myrg_records_in_range(MYRG_INFO *info, int inx, + const key_range *min_key, + const key_range *max_key, + page_range *pages); +extern ha_rows myrg_records(MYRG_INFO *info); + +extern ulonglong myrg_position(MYRG_INFO *info); +#ifdef __cplusplus +} +#endif +#endif |