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authorunknown <guilhem@gbichot3.local>2007-02-28 17:50:51 +0100
committerunknown <guilhem@gbichot3.local>2007-02-28 17:50:51 +0100
commitea57b3d4a066a5507a7e322b53e3acab24a2855e (patch)
treea0703039f00da454a2a91c8b14835d45a6146209 /include/my_handler.h
parentae72e394502e13b854b6e9bb00889fa6b69a7ed9 (diff)
parentfdf847fb62a0fcdf0edf25d6c8654b19eaa9a9ad (diff)
downloadmariadb-git-ea57b3d4a066a5507a7e322b53e3acab24a2855e.tar.gz
Merge gbichot3.local:/home/mysql_src/mysql-5.1-for-maria
into gbichot3.local:/home/mysql_src/mysql-maria BitKeeper/etc/ignore: auto-union BUILD/SETUP.sh: Auto merged client/mysqldump.c: Auto merged config/ac-macros/plugins.m4: Auto merged configure.in: Auto merged include/Makefile.am: Auto merged include/atomic/nolock.h: Auto merged include/atomic/rwlock.h: Auto merged include/atomic/x86-gcc.h: Auto merged include/atomic/x86-msvc.h: Auto merged include/ft_global.h: Auto merged include/keycache.h: Auto merged include/m_string.h: Auto merged include/my_atomic.h: Auto merged include/my_base.h: Auto merged include/my_dbug.h: Auto merged include/my_global.h: Auto merged include/my_handler.h: Auto merged include/my_sys.h: Auto merged include/myisam.h: Auto merged libmysql/CMakeLists.txt: Auto merged libmysqld/Makefile.am: Auto merged mysql-test/mysql-test-run.pl: Auto merged mysql-test/r/events_logs_tests.result: Auto merged mysql-test/t/events_logs_tests.test: Auto merged mysys/Makefile.am: Auto merged mysys/array.c: Auto merged mysys/mf_keycache.c: Auto merged mysys/mf_keycaches.c: Auto merged mysys/my_atomic.c: Auto merged mysys/my_bit.c: Auto merged mysys/my_bitmap.c: Auto merged mysys/my_create.c: Auto merged mysys/my_delete.c: Auto merged mysys/my_getsystime.c: Auto merged mysys/my_handler.c: Auto merged mysys/my_init.c: Auto merged mysys/my_open.c: Auto merged mysys/my_pread.c: Auto merged mysys/my_rename.c: Auto merged mysys/my_symlink.c: Auto merged mysys/my_sync.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.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/set_var.h: Auto merged sql/sql_class.h: Auto merged sql/sql_parse.cc: Auto merged sql/sql_select.cc: Auto merged sql/sql_sort.h: Auto merged sql/sql_test.cc: Auto merged sql/uniques.cc: Auto merged sql/unireg.cc: Auto merged storage/Makefile.am: Auto merged storage/csv/ha_tina.cc: Auto merged storage/myisam/Makefile.am: 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_static.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_check.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_dynrec.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_packrec.c: Auto merged storage/myisam/mi_range.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/mi_write.c: Auto merged storage/myisam/myisamchk.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/myisammrg/ha_myisammrg.h: Auto merged unittest/mytap/tap.c: Auto merged mysql-test/r/view.result: manual merge mysql-test/t/view.test: manual merge Makefile.am: manual merge mysql-test/t/disabled.def: manual merge sql/mysqld.cc: manual merge sql/set_var.cc: manual merge sql/udf_example.c: manual merge storage/myisam/ha_myisam.cc: manual merge storage/myisam/myisamdef.h: manual merge storage/ndb/src/mgmapi/mgmapi.cpp: manual merge unittest/Makefile.am: manual merge unittest/mysys/Makefile.am: manual merge unittest/mysys/my_atomic-t.c: manual merge
Diffstat (limited to 'include/my_handler.h')
-rw-r--r--include/my_handler.h48
1 files changed, 35 insertions, 13 deletions
diff --git a/include/my_handler.h b/include/my_handler.h
index d7cd0567f9c..72caf67398f 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,