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authorunknown <jani@hynda.mysql.fi>2007-06-27 17:49:12 +0300
committerunknown <jani@hynda.mysql.fi>2007-06-27 17:49:12 +0300
commit5444b55cbbab69a508e6c477a1b9580eff969da1 (patch)
treeeb82a0418f88b83d49bf66dfc659d59862535683 /include/my_handler.h
parente34641b3cece714b861c7130f245659342f583ba (diff)
parent1a96259191b193b353387cbb70d7567009e3b247 (diff)
downloadmariadb-git-5444b55cbbab69a508e6c477a1b9580eff969da1.tar.gz
Merge jamppa@bk-internal.mysql.com:/home/bk/mysql-5.1
into hynda.mysql.fi:/home/my/mysql-maria BitKeeper/etc/ignore: auto-union Makefile.am: Auto merged BUILD/SETUP.sh: Auto merged BitKeeper/deleted/.del-init_db.sql~a77d572c39d5a1f8: Auto merged client/mysqldump.c: Auto merged include/Makefile.am: Auto merged include/m_string.h: Auto merged include/my_base.h: Auto merged include/my_dbug.h: Auto merged libmysql/CMakeLists.txt: Auto merged libmysql/Makefile.shared: Auto merged libmysqld/Makefile.am: Auto merged mysql-test/include/varchar.inc: Auto merged mysql-test/lib/mtr_cases.pl: Auto merged mysql-test/lib/mtr_io.pl: Auto merged mysql-test/lib/mtr_misc.pl: Auto merged mysql-test/mysql-test-run.pl: Auto merged mysql-test/lib/mtr_process.pl: Auto merged mysql-test/lib/mtr_report.pl: Auto merged mysql-test/r/events_logs_tests.result: Auto merged mysql-test/r/view.result: Auto merged mysql-test/t/disabled.def: Auto merged mysql-test/t/events_logs_tests.test: Auto merged mysql-test/t/myisam.test: Auto merged mysql-test/t/view.test: Auto merged mysys/Makefile.am: Auto merged mysys/my_create.c: Auto merged mysys/my_handler.c: Auto merged mysys/my_init.c: Auto merged mysys/my_open.c: Auto merged mysys/safemalloc.c: Auto merged plugin/daemon_example/daemon_example.cc: Auto merged sql/Makefile.am: Auto merged sql/filesort.cc: Auto merged sql/gen_lex_hash.cc: Auto merged sql/ha_ndbcluster.cc: Auto merged sql/handler.cc: Auto merged sql/handler.h: Auto merged sql/item_func.cc: Auto merged sql/item_func.h: Auto merged sql/log.cc: Auto merged sql/mysql_priv.h: Auto merged sql/opt_range.cc: Auto merged sql/slave.cc: Auto merged sql/slave.h: Auto merged sql/sql_parse.cc: Auto merged sql/sql_select.cc: Auto merged sql/share/errmsg.txt: Auto merged sql/sql_table.cc: Auto merged sql/sql_test.cc: Auto merged sql/udf_example.c: Auto merged sql/uniques.cc: Auto merged sql/unireg.cc: Auto merged storage/csv/ha_tina.cc: Auto merged storage/myisam/ft_boolean_search.c: Auto merged storage/myisam/ft_nlq_search.c: Auto merged storage/myisam/ft_parser.c: Auto merged storage/myisam/ft_stopwords.c: Auto merged storage/myisam/ft_update.c: Auto merged storage/myisam/fulltext.h: Auto merged storage/myisam/ha_myisam.h: Auto merged storage/myisam/mi_checksum.c: Auto merged storage/myisam/mi_create.c: Auto merged storage/myisam/mi_delete.c: Auto merged storage/myisam/mi_delete_all.c: Auto merged storage/myisam/mi_key.c: Auto merged storage/myisam/mi_log.c: Auto merged storage/myisam/mi_open.c: Auto merged storage/myisam/mi_range.c: Auto merged storage/myisam/mi_rkey.c: Auto merged storage/myisam/mi_rsamepos.c: Auto merged storage/myisam/mi_search.c: Auto merged storage/myisam/mi_test1.c: Auto merged storage/myisam/mi_test2.c: Auto merged storage/myisam/mi_unique.c: Auto merged storage/myisam/mi_update.c: Auto merged storage/myisam/myisamlog.c: Auto merged storage/myisam/myisampack.c: Auto merged storage/myisam/rt_index.c: Auto merged storage/myisam/sort.c: Auto merged storage/myisam/sp_test.c: Auto merged storage/myisammrg/ha_myisammrg.h: Auto merged storage/ndb/src/mgmapi/mgmapi.cpp: Auto merged unittest/Makefile.am: Auto merged BitKeeper/triggers/post-commit: Manual merge from mysql-5.1 to mysql-maria configure.in: Manual merge from mysql-5.1 to mysql-maria include/ft_global.h: Manual merge from mysql-5.1 to mysql-maria include/keycache.h: Manual merge from mysql-5.1 to mysql-maria include/my_atomic.h: Manual merge from mysql-5.1 to mysql-maria include/my_global.h: Manual merge from mysql-5.1 to mysql-maria include/my_sys.h: Manual merge from mysql-5.1 to mysql-maria include/myisam.h: Manual merge from mysql-5.1 to mysql-maria mysys/array.c: Manual merge from mysql-5.1 to mysql-maria mysys/mf_keycache.c: Manual merge from mysql-5.1 to mysql-maria mysys/mf_keycaches.c: Manual merge from mysql-5.1 to mysql-maria mysys/my_pread.c: Manual merge from mysql-5.1 to mysql-maria sql/mysqld.cc: Manual merge from mysql-5.1 to mysql-maria sql/net_serv.cc: Manual merge from mysql-5.1 to mysql-maria sql/set_var.cc: Manual merge from mysql-5.1 to mysql-maria sql/set_var.h: Manual merge from mysql-5.1 to mysql-maria sql/sql_class.h: Manual merge from mysql-5.1 to mysql-maria storage/myisam/ft_static.c: Manual merge from mysql-5.1 to mysql-maria storage/myisam/ha_myisam.cc: Manual merge from mysql-5.1 to mysql-maria storage/myisam/mi_check.c: Manual merge from mysql-5.1 to mysql-maria storage/myisam/mi_dynrec.c: Manual merge from mysql-5.1 to mysql-maria storage/myisam/mi_packrec.c: Manual merge from mysql-5.1 to mysql-maria storage/myisam/mi_write.c: Manual merge from mysql-5.1 to mysql-maria storage/myisam/myisamchk.c: Manual merge from mysql-5.1 to mysql-maria storage/myisam/myisamdef.h: Manual merge from mysql-5.1 to mysql-maria storage/myisammrg/ha_myisammrg.cc: Manual merge from mysql-5.1 to mysql-maria unittest/mysys/Makefile.am: Manual merge from mysql-5.1 to mysql-maria unittest/mysys/my_atomic-t.c: Manual merge from mysql-5.1 to mysql-maria
Diffstat (limited to 'include/my_handler.h')
-rw-r--r--include/my_handler.h55
1 files changed, 42 insertions, 13 deletions
diff --git a/include/my_handler.h b/include/my_handler.h
index d7cd0567f9c..13dcd01a332 100644
--- a/include/my_handler.h
+++ b/include/my_handler.h
@@ -18,10 +18,30 @@
#ifndef _my_handler_h
#define _my_handler_h
-#include "my_base.h"
-#include "m_ctype.h"
#include "myisampack.h"
+/*
+ There is a hard limit for the maximum number of keys as there are only
+ 8 bits in the index file header for the number of keys in a table.
+ This means that 0..255 keys can exist for a table. The idea of
+ HA_MAX_POSSIBLE_KEY is to ensure that one can use myisamchk & tools on
+ a MyISAM table for which one has more keys than MyISAM is normally
+ compiled for. If you don't have this, you will get a core dump when
+ running myisamchk compiled for 128 keys on a table with 255 keys.
+*/
+
+#define HA_MAX_POSSIBLE_KEY 255 /* For myisamchk */
+/*
+ The following defines can be increased if necessary.
+ But beware the dependency of HA_MAX_POSSIBLE_KEY_BUFF and HA_MAX_KEY_LENGTH.
+*/
+
+#define HA_MAX_KEY_LENGTH 1000 /* Max length in bytes */
+#define HA_MAX_KEY_SEG 16 /* Max segments for key */
+
+#define HA_MAX_POSSIBLE_KEY_BUFF (HA_MAX_KEY_LENGTH + 24+ 6+6)
+#define HA_MAX_KEY_BUFF (HA_MAX_KEY_LENGTH+HA_MAX_KEY_SEG*6+8+8)
+
typedef struct st_HA_KEYSEG /* Key-portion */
{
CHARSET_INFO *charset;
@@ -38,33 +58,35 @@ typedef struct st_HA_KEYSEG /* Key-portion */
} HA_KEYSEG;
#define get_key_length(length,key) \
-{ if ((uchar) *(key) != 255) \
- length= (uint) (uchar) *((key)++); \
+{ if (*(uchar*) (key) != 255) \
+ length= (uint) *(uchar*) ((key)++); \
else \
- { length=mi_uint2korr((key)+1); (key)+=3; } \
+ { length= mi_uint2korr((key)+1); (key)+=3; } \
}
#define get_key_length_rdonly(length,key) \
-{ if ((uchar) *(key) != 255) \
- length= ((uint) (uchar) *((key))); \
+{ if (*(uchar*) (key) != 255) \
+ length= ((uint) *(uchar*) ((key))); \
else \
- { length=mi_uint2korr((key)+1); } \
+ { length= mi_uint2korr((key)+1); } \
}
#define get_key_pack_length(length,length_pack,key) \
-{ if ((uchar) *(key) != 255) \
- { length= (uint) (uchar) *((key)++); length_pack=1; }\
+{ if (*(uchar*) (key) != 255) \
+ { length= (uint) *(uchar*) ((key)++); length_pack= 1; }\
else \
- { length=mi_uint2korr((key)+1); (key)+=3; length_pack=3; } \
+ { length=mi_uint2korr((key)+1); (key)+= 3; length_pack= 3; } \
}
#define store_key_length_inc(key,length) \
{ if ((length) < 255) \
- { *(key)++=(length); } \
+ { *(key)++= (length); } \
else \
{ *(key)=255; mi_int2store((key)+1,(length)); (key)+=3; } \
}
+#define size_to_store_key_length(length) ((length) < 255 ? 1 : 3)
+
#define get_rec_bits(bit_ptr, bit_ofs, bit_len) \
(((((uint16) (bit_ptr)[1] << 8) | (uint16) (bit_ptr)[0]) >> (bit_ofs)) & \
((1 << (bit_len)) - 1))
@@ -81,7 +103,7 @@ typedef struct st_HA_KEYSEG /* Key-portion */
#define clr_rec_bits(bit_ptr, bit_ofs, bit_len) \
set_rec_bits(0, bit_ptr, bit_ofs, bit_len)
-extern int mi_compare_text(CHARSET_INFO *, uchar *, uint, uchar *, uint ,
+extern int ha_compare_text(CHARSET_INFO *, uchar *, uint, uchar *, uint ,
my_bool, my_bool);
extern int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a,
register uchar *b, uint key_length, uint nextflag,
@@ -89,4 +111,11 @@ extern int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a,
extern HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, uchar *a);
+/*
+ Inside an in-memory data record, memory pointers to pieces of the
+ record (like BLOBs) are stored in their native byte order and in
+ this amount of bytes.
+*/
+#define portable_sizeof_char_ptr 8
+
#endif /* _my_handler_h */