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all files: use restrict key word for all pointer arguments

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Limit the effects of pointer aliasing and aiding caching
optimizations.

http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2011-10-23 22:18:38 +02:00
parent 235825b084
commit 6b47d9ffaf
6 changed files with 33 additions and 32 deletions
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8
src/sort.c
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@ -44,7 +44,7 @@
#include "dhcpd-pools.h"
/* Sort functions for range sorting */
int intcomp(const void *x, const void *y)
int intcomp(const void *restrict x, const void *restrict y)
{
if (*(uint32_t *) x < *(uint32_t *) y)
return -1;
@ -54,7 +54,7 @@ int intcomp(const void *x, const void *y)
return 0;
}
int rangecomp(const void *r1, const void *r2)
int rangecomp(const void *restrict r1, const void *restrict r2)
{
if ((((struct range_t *)r1)->first_ip) <
(((struct range_t *)r2)->first_ip))
@ -139,7 +139,7 @@ void field_selector(char c)
}
/* Needed to support multiple key sorting. */
int get_order(struct range_t *left, struct range_t *right)
int get_order(struct range_t *restrict left, struct range_t *restrict right)
{
int i, len, ret;
unsigned long int lint, rint;
@ -178,7 +178,7 @@ int get_order(struct range_t *left, struct range_t *right)
return (0);
}
void mergesort_ranges(struct range_t *orig, int size, struct range_t *temp)
void mergesort_ranges(struct range_t *restrict orig, int size, struct range_t *restrict temp)
{
int left, right, i;
struct range_t hold;