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xstrstr: speed up analysis by avoiding string comparisons

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With large input one should see cut 15% for overall run time.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2013-08-31 00:30:28 +01:00
parent d70b08244f
commit 06ffa5ed04
5 changed files with 102 additions and 98 deletions
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3
src/dhcpd-pools.h
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@ -210,8 +210,7 @@ void copy_ipaddr(union ipaddr_t *restrict dst,
const union ipaddr_t *restrict src);
const char *ntop_ipaddr(const union ipaddr_t *ip);
double get_range_size(const struct range_t *r);
int xstrstr(const char *__restrict a, const char *__restrict b, int len)
__attribute__ ((nonnull(1, 2)))
int xstrstr(const char *__restrict str)
# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
__attribute__ ((__hot__))
# endif