This change removed 68 explict strlen() calls from the code.
The following renames was done to ensure we don't use the old names
when merging code from earlier releases, as using the new variables
for print function could result in crashes:
- charset->csname renamed to charset->cs_name
- charset->name renamed to charset->coll_name
Almost everything where mechanical changes except:
- Changed to use the new Protocol::store(LEX_CSTRING..) when possible
- Changed to use field->store(LEX_CSTRING*, CHARSET_INFO*) when possible
- Changed to use String->append(LEX_CSTRING&) when possible
Other things:
- There where compiler issues with ensuring that all character set names
points to the same string: gcc doesn't allow one to use integer constants
when defining global structures (constant char * pointers works fine).
To get around this, I declared defines for each character set name
length.
This patch ensures that all identical character sets shares the same
cs->csname.
This allows us to replace strcmp() in my_charset_same() with comparisons
of pointers. This fixes a long standing performance issue that could cause
as strcmp() for every item sent trough the protocol class to the end user.
One consequence of this patch is that we don't allow one to add a character
definition in the Index.xml file that changes the csname of an existing
character set. This is by design as changing character set names of existing
ones is extremely dangerous, especially as some storage engines just records
character set numbers.
As we now have a hash over character set's csname, we can in the future
use that for faster access to a specific character set. This could be done
by changing the hash to non unique and use the hash to find the next
character set with same csname.
The code did not take into account that:
- U+005C (backslash) can occupy more than mbminlen characters (e.g. in sjis)
- Some character sets do not have a code for U+005C (e.g. swe7)
Adding a new function my_wc_to_printable into MY_CHARSET_HANDLER to
cover all special cases easier.
This is a pre-requisite patch for:
- MDEV-8433 Make field<'broken-string' use indexes
- MDEV-8625 Bad result set with ignorable characters when using a prefix key
- MDEV-8626 Bad result set with contractions when using a prefix key
Adding a new virtual function MY_CHARSET_HANDLER::copy_abort().
Moving character set specific code into the correspoding implementations
(for simple, multi-byte and mbmaxlen>1 character sets).
sql/sql_insert.cc:
CREATE ... IF NOT EXISTS may do nothing, but
it is still not a failure. don't forget to my_ok it.
******
CREATE ... IF NOT EXISTS may do nothing, but
it is still not a failure. don't forget to my_ok it.
sql/sql_table.cc:
small cleanup
******
small cleanup
Added strings_def.h into strings library to be able to have a DBUG_ASSERT() version without _db_flush() call (as strings.a should not depend on dbug.a)
Remove include of m_string.h in all string files (as it's included by string_def.h).
Fixed include order.
Changed "m_ctype.h" -> <m_ctype.h>
include/my_dbug.h:
Flush DBUG log in case of DBUG_ASSERT()
strings/bchange.c:
Include strings_def.h
strings/bcmp.c:
Include strings_def.h
strings/bfill.c:
Include strings_def.h
strings/bmove.c:
Include strings_def.h
strings/bmove512.c:
Include strings_def.h
strings/bmove_upp.c:
Include strings_def.h
strings/conf_to_src.c:
Include strings_def.h
Fixed copyright
strings/ctype-big5.c:
Include strings_def.h
strings/ctype-bin.c:
Include strings_def.h
strings/ctype-cp932.c:
Include strings_def.h
strings/ctype-czech.c:
Include strings_def.h
strings/ctype-euc_kr.c:
Include strings_def.h
strings/ctype-eucjpms.c:
Include strings_def.h
strings/ctype-extra.c:
Include strings_def.h
strings/ctype-gbk.c:
Include strings_def.h
strings/ctype-latin1.c:
Include strings_def.h
strings/ctype-mb.c:
Include strings_def.h
strings/ctype-simple.c:
Include strings_def.h
strings/ctype-sjis.c:
Include strings_def.h
strings/ctype-tis620.c:
Include strings_def.h
strings/ctype-uca.c:
Include strings_def.h
strings/ctype-ucs2.c:
Include strings_def.h
strings/ctype-ujis.c:
Include strings_def.h
strings/ctype-utf8.c:
Include strings_def.h
strings/ctype-win1250ch.c:
Include strings_def.h
strings/ctype.c:
Include strings_def.h
strings/decimal.c:
Include strings_def.h
strings/do_ctype.c:
Include strings_def.h
strings/int2str.c:
Include strings_def.h
strings/is_prefix.c:
Include strings_def.h
strings/llstr.c:
Include strings_def.h
strings/longlong2str.c:
Include strings_def.h
strings/longlong2str_asm.c:
Include strings_def.h
strings/my_strchr.c:
Include strings_def.h
strings/my_strtoll10.c:
Include strings_def.h
strings/my_vsnprintf.c:
Include strings_def.h
strings/r_strinstr.c:
Include strings_def.h
strings/str2int.c:
Include strings_def.h
strings/str_alloc.c:
Include strings_def.h
strings/str_test.c:
Include strings_def.h
Fixed compiler warnings
strings/strappend.c:
Include strings_def.h
strings/strcend.c:
Include strings_def.h
strings/strcont.c:
Include strings_def.h
strings/strend.c:
Include strings_def.h
strings/strfill.c:
Include strings_def.h
strings/strinstr.c:
Include strings_def.h
strings/strmake.c:
Include strings_def.h
strings/strmov.c:
Include strings_def.h
strings/strmov_overlapp.c:
Include strings_def.h
strings/strnlen.c:
Include strings_def.h
strings/strnmov.c:
Include strings_def.h
strings/strstr.c:
Include strings_def.h
strings/strto.c:
Include strings_def.h
strings/strtod.c:
Include strings_def.h
strings/strtol.c:
Include strings_def.h
strings/strtoll.c:
Include strings_def.h
strings/strtoul.c:
Include strings_def.h
strings/strtoull.c:
Include strings_def.h
strings/strxmov.c:
Include strings_def.h
strings/strxnmov.c:
Include strings_def.h
strings/uctypedump.c:
Include strings_def.h
Fixed compiler warnings
Removed double include of m_ctype.h
strings/udiv.c:
Include strings_def.h
strings/xml.c:
Include strings_def.h
- Changed to still use bcmp() in certain cases becasue
- Faster for short unaligneed strings than memcmp()
- Bettern when using valgrind
- Changed to use my_sprintf() instead of sprintf() to get higher portability for old systems
- Changed code to use MariaDB version of select->skip_record()
- Removed -%::SCCS/s.% from Makefile.am:s to remove automake warnings
Problem: The functions my_like_range_xxx() returned
badly formed maximum strings for Asian character sets,
which made problems for storage engines.
Fix:
- Removed a number my_like_range_xxx() implementations,
which were in fact dumplicate code pieces.
- Using generic my_like_range_mb() instead.
- Setting max_sort_char member properly for Asian character sets
- Adding unittest/strings/strings-t.c,
to test that my_like_range_xxx() return well-formed
min and max strings.
Notes:
- No additional tests in mysql/t/ available.
Old tests cover the affected code well enough.
Removed compiler warnings
extra/libevent/epoll.c:
Removed compiler warnings
extra/libevent/evbuffer.c:
Removed compiler warnings
extra/libevent/event.c:
Removed compiler warnings
extra/libevent/select.c:
Removed compiler warnings
extra/libevent/signal.c:
Removed compiler warnings
include/m_ctype.h:
Define CHARSET_INFO, MY_CHARSET_HANDLER, MY_COLLATION_HANDLER, MY_UNICASE_INFO, MY_UNI_CTYPE and MY_UNI_IDX as const structures.
Declare that pointers point to const data
include/m_string.h:
Declare that pointers point to const data
include/my_sys.h:
Redefine variables and function prototypes
include/mysql.h:
Declare charset as const
include/mysql.h.pp:
Declare charset as const
include/mysql/plugin.h:
Declare charset as const
include/mysql/plugin.h.pp:
Declare charset as const
mysys/charset-def.c:
Charset can't be of type CHARSET_INFO as they are changed when they are initialized.
mysys/charset.c:
Functions that change CHARSET_INFO must use 'struct charset_info_st'
Add temporary variables to not have to change all_charsets[] (Which now is const)
sql-common/client.c:
Added cast to const
sql/item_cmpfunc.h:
Added cast to avoid compiler error.
sql/sql_class.cc:
Added cast to const
sql/sql_lex.cc:
Added cast to const
storage/maria/ma_ft_boolean_search.c:
Added cast to avoid compiler error.
storage/maria/ma_ft_parser.c:
Added cast to avoid compiler error.
storage/maria/ma_search.c:
Added cast to const
storage/myisam/ft_boolean_search.c:
Added cast to avoid compiler error
storage/myisam/ft_parser.c:
Added cast to avoid compiler error
storage/myisam/mi_search.c:
Added cast to const
storage/pbxt/src/datadic_xt.cc:
Added cast to const
storage/pbxt/src/ha_pbxt.cc:
Added cast to const
Removed compiler warning by changing prototype of XTThreadPtr()
storage/pbxt/src/myxt_xt.h:
Character sets should be const
storage/pbxt/src/xt_defs.h:
Character sets should be const
storage/xtradb/btr/btr0cur.c:
Removed compiler warning
strings/conf_to_src.c:
Added const
Functions that change CHARSET_INFO must use 'struct charset_info_st'
strings/ctype-big5.c:
Made arrays const
strings/ctype-bin.c:
Made arrays const
strings/ctype-cp932.c:
Made arrays const
strings/ctype-czech.c:
Made arrays const
strings/ctype-euc_kr.c:
Made arrays const
strings/ctype-eucjpms.c:
Made arrays const
strings/ctype-extra.c:
Made arrays const
strings/ctype-gb2312.c:
Made arrays const
strings/ctype-gbk.c:
Made arrays const
strings/ctype-latin1.c:
Made arrays const
strings/ctype-mb.c:
Made arrays const
strings/ctype-simple.c:
Made arrays const
strings/ctype-sjis.c:
Made arrays const
strings/ctype-tis620.c:
Made arrays const
strings/ctype-uca.c:
Made arrays const
strings/ctype-ucs2.c:
Made arrays const
strings/ctype-ujis.c:
Made arrays const
strings/ctype-utf8.c:
Made arrays const
strings/ctype-win1250ch.c:
Made arrays const
strings/ctype.c:
Made arrays const
Added cast to const
Functions that change CHARSET_INFO must use 'struct charset_info_st'
strings/int2str.c:
Added cast to const
* Finished Monty and Jani's merge
* Some InnoDB tests still fail (because it's old xtradb code run against
newer testsuite). They are expected to go after mergning with the latest
xtradb.
This allows us to skip and speed up some very common character converts that MySQL is doing when sending data to the client
and this gives us a nice speed increase for most queries that uses only characters in the range 0x00-0x7f.
This code is based on Alexander Barkov's code that he has done in MySQL 6.0
include/m_ctype.h:
Added MY_CS_NONASCII marker
libmysqld/lib_sql.cc:
Added function net_store_data(...) that takes to and from CHARSET_INFO * as arguments
mysys/charset.c:
Mark character sets with MY_CS_NONASCII
scripts/mysql_install_db.sh:
Fixed messages to refer to MariaDB instead of MySQL
sql/protocol.cc:
Added function net_store_data(...) that takes to and from CHARSET_INFO * as arguments
sql/protocol.h:
Added function net_store_data(...) that takes to and from CHARSET_INFO * as arguments
sql/sql_string.cc:
Quicker copy of strings with no characters above 0x7f
strings/conf_to_src.c:
Added printing of MY_CS_NONASCII
strings/ctype-extra.c:
Mark incompatible character sets with MY_CS_NONASCII
Removed duplicated character set geostd
strings/ctype-sjis.c:
Mark incompatible character sets with MY_CS_NONASCII
strings/ctype-uca.c:
Mark incompatible character sets with MY_CS_NONASCII
strings/ctype-ucs2.c:
Mark incompatible character sets with MY_CS_NONASCII
strings/ctype-utf8.c:
Mark incompatible character sets with MY_CS_NONASCII
strings/ctype.c:
Added function to check if character set is compatible with latin1 in ranges 0x00-0x7f
