summaryrefslogtreecommitdiff
path: root/sql/sql_string.cc
diff options
context:
space:
mode:
authorSergei Golubchik <sergii@pisem.net>2011-04-25 17:22:25 +0200
committerSergei Golubchik <sergii@pisem.net>2011-04-25 17:22:25 +0200
commit0accbd0364e0333e0b119aa9ce93e34ded9df6cb (patch)
treebdf0738c29dc1f57fbfba3a1754524e238f15b52 /sql/sql_string.cc
parent37f87d73ae8dc6c30594867b40a5d70159acf63c (diff)
downloadmariadb-git-0accbd0364e0333e0b119aa9ce93e34ded9df6cb.tar.gz
lots of post-merge changes
Diffstat (limited to 'sql/sql_string.cc')
-rw-r--r--sql/sql_string.cc58
1 files changed, 0 insertions, 58 deletions
diff --git a/sql/sql_string.cc b/sql/sql_string.cc
index 058af3c6826..c5544164dbf 100644
--- a/sql/sql_string.cc
+++ b/sql/sql_string.cc
@@ -916,64 +916,6 @@ my_copy_with_hex_escaping(CHARSET_INFO *cs,
return dst - dst0;
}
-/*
- Optimized for quick copying of ASCII characters in the range 0x00..0x7F.
-*/
-uint32
-copy_and_convert(char *to, uint32 to_length, CHARSET_INFO *to_cs,
- const char *from, uint32 from_length, CHARSET_INFO *from_cs,
- uint *errors)
-{
- /*
- If any of the character sets is not ASCII compatible,
- immediately switch to slow mb_wc->wc_mb method.
- */
- if ((to_cs->state | from_cs->state) & MY_CS_NONASCII)
- return copy_and_convert_extended(to, to_length, to_cs,
- from, from_length, from_cs, errors);
-
- uint32 length= min(to_length, from_length), length2= length;
-
-#if defined(__i386__)
- /*
- Special loop for i386, it allows to refer to a
- non-aligned memory block as UINT32, which makes
- it possible to copy four bytes at once. This
- gives about 10% performance improvement comparing
- to byte-by-byte loop.
- */
- for ( ; length >= 4; length-= 4, from+= 4, to+= 4)
- {
- if ((*(uint32*)from) & 0x80808080)
- break;
- *((uint32*) to)= *((const uint32*) from);
- }
-#endif
-
- for (; ; *to++= *from++, length--)
- {
- if (!length)
- {
- *errors= 0;
- return length2;
- }
- if (*((unsigned char*) from) > 0x7F) /* A non-ASCII character */
- {
- uint32 copied_length= length2 - length;
- to_length-= copied_length;
- from_length-= copied_length;
- return copied_length + copy_and_convert_extended(to, to_length,
- to_cs,
- from, from_length,
- from_cs,
- errors);
- }
- }
-
- DBUG_ASSERT(FALSE); // Should never get to here
- return 0; // Make compiler happy
-}
-
/*
copy a string,