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FS-4928 doing 100 calls I found 7 million calls to toupper, this patch replaces it with an inline optimized one I found online. Not sure it helps but maybe you can profile it again with latest.

This commit is contained in:
Anthony Minessale 2012-12-11 19:18:25 -06:00
parent 61ca331a28
commit 5d35d71cfd
2 changed files with 13 additions and 2 deletions
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13
src/include/switch_utils.h
View File

@ -40,7 +40,18 @@
#include <switch.h>
SWITCH_BEGIN_EXTERN_C SWITCH_DECLARE(int) switch_toupper(int c);
SWITCH_BEGIN_EXTERN_C
/* https://code.google.com/p/stringencoders/wiki/PerformanceAscii */
static inline uint32_t switch_toupper(uint32_t eax)
{
uint32_t ebx = (0x7f7f7f7ful & eax) + 0x05050505ul;
ebx = (0x7f7f7f7ful & ebx) + 0x1a1a1a1aul;
ebx = ((ebx & ~eax) >> 2 ) & 0x20202020ul;
return eax - ebx;
}
SWITCH_DECLARE(int) old_switch_toupper(int c);
SWITCH_DECLARE(int) switch_tolower(int c);
SWITCH_DECLARE(int) switch_isalnum(int c);
SWITCH_DECLARE(int) switch_isalpha(int c);

2
src/switch_utils.c
View File

@ -2609,7 +2609,7 @@ const short _switch_C_toupper_[1 + SWITCH_CTYPE_NUM_CHARS] = {
const short *_switch_toupper_tab_ = _switch_C_toupper_;
SWITCH_DECLARE(int) switch_toupper(int c)
SWITCH_DECLARE(int) old_switch_toupper(int c)
{
if ((unsigned int) c > 255)
return (c);