forked from enlightenment/efl
Ali Alzyod
c25554c4f2
Summary: This function has no special processing when copy data, so using memcpy can enhance performance
Test Plan:
```
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
typedef unsigned int DATA32;
static void
oldFunc(DATA32 *src, DATA32 *dst, size_t len)
{
DATA32 *dst_end = dst + len;
while (dst < dst_end)
*dst++ = *src++;
}
static void
newFunc(DATA32 *src, DATA32 *dst, size_t len)
{
memcpy(dst, src, len * sizeof(DATA32));
}
int main()
{
int counter = 1000;
srand(time(NULL));
DATA32 src[50000] = {0};
DATA32 dst[50000] = {0};
for (int i = 0; i < 50000; i++)
src[i] = rand();
clock_t start, end;
double total_Time1 = 0;
int i;
start = clock();
for (i = 0; i < counter; i++)
oldFunc(src, dst, 50000);
end = clock();
total_Time1 = ((double)(end - start)) / CLOCKS_PER_SEC;
printf("original = %f \n", total_Time1);
start = clock();
for (i = 0; i < counter; i++)
newFunc(src, dst, 50000);
end = clock();
total_Time1 = ((double)(end - start)) / CLOCKS_PER_SEC;
printf("modified = %f \n", total_Time1);
}
```
Reviewers: raster, ManMower, woohyun, Hermet
Reviewed By: Hermet
Subscribers: Hermet, vtorri, cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D9155
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| benchmarks | ||
| bin | ||
| bindings | ||
| edje_external | ||
| examples | ||
| generic | ||
| lib | ||
| modules | ||
| scripts | ||
| static_libs | ||
| tests | ||
| wayland_protocol | ||