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// SPDX-License-Identifier: MIT
/*
* speed test HX_memmem
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <libHX/defs.h>
#include <libHX/init.h>
#include <libHX/misc.h>
#include <libHX/string.h>
static unsigned int size = 1048576 * 64;
static const char filler_text[] =
"Slhrdlu cringle tongle flonging blobbity bleep blingmangl";
static int long_scan(void)
{
struct timespec start, stop, delta;
char *filler2, *p;
filler2 = malloc(size);
if (filler2 == NULL)
return EXIT_FAILURE;
memset(filler2, 'l', size);
filler2[size-2] = 'a';
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start);
p = HX_memmem(filler2, strlen(filler2), "al", 2);
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &stop);
printf("long_scan: filler2=%p p=%p\n", filler2, p);
HX_timespec_sub(&delta, &stop, &start);
printf("long_scan: " HX_TIMESPEC_FMT "\n", HX_TIMESPEC_EXP(&delta));
free(filler2);
return EXIT_SUCCESS;
}
static int runner(void)
{
unsigned int i;
char *haystack;
struct timespec start, stop, delta;
if (HX_init() <= 0)
return EXIT_FAILURE;
haystack = malloc(size);
if (haystack == NULL)
return EXIT_FAILURE;
memset(haystack, 'A', size);
haystack[size-1] = haystack[size-2] = 'Z';
printf("Init done\n");
printf("Start=%p End=%p\n", filler_text,
filler_text + ARRAY_SIZE(filler_text));
printf("%p\n", HX_memmem(filler_text, strlen(filler_text), "nangl", 5));
printf("%p\n", HX_memmem(filler_text, strlen(filler_text), "angl", 4));
printf("%p\n", HX_memmem(filler_text, strlen(filler_text), "ngl", 3));
printf("%p\n", HX_memmem(filler_text, strlen(filler_text), "ngl", 3));
int ret = long_scan();
if (ret != EXIT_SUCCESS) {
free(haystack);
return ret;
}
for (i = 0; i < 10; ++i) {
printf("Search length %u...", i);
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start);
HX_memmem(haystack, size, haystack + size - i, i);
clock_gettime(CLOCK_THREAD_CPUTIME_ID, &stop);
HX_timespec_sub(&delta, &stop, &start);
printf(HX_TIMESPEC_FMT "\n", HX_TIMESPEC_EXP(&delta));
}
free(haystack);
HX_exit();
return EXIT_SUCCESS;
}
int main(void)
{
int ret = runner();
if (ret != EXIT_FAILURE)
fprintf(stderr, "FAILED\n");
return ret;
}
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