48 lines
912 B
C
48 lines
912 B
C
//~ time ./realloc_speed_test_c 50000 100000
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//~ Success, iterations = 50000, nobj = 100000
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//~
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//~ real 0m0.313s
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//~ user 0m0.130s
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//~ sys 0m0.160s
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "xalloc.h"
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int main(int argc, char *argv[])
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{
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if (argc != 3) {
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fputs("Usage: realloc_speed_test_c iterations nobj\n", stderr);
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exit(-1);
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}
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size_t iterations = (size_t)atoi(argv[1]);
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size_t nobj = (size_t)atoi(argv[2]);
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void **p = malloc(sizeof(void *) * nobj);
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memset(p, 0, sizeof(void *) * nobj);
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size_t i, idx, sz;
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for (i = 0; i < iterations; i++) {
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idx = (size_t)(rand() % (int)nobj);
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sz = i;
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p[idx] = realloc(p[idx], sz);
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if (sz && !p[idx]) {
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fprintf(stderr, "Alloc error at i = %lu\n", i);
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exit(-1);
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}
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}
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for (i = 0; i < nobj; i++)
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free(p[i]);
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free(p);
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printf("Success, iterations = %lu, nobj = %lu\n", iterations, nobj);
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return EXIT_SUCCESS;
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}
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