52 lines
1.2 KiB
C
52 lines
1.2 KiB
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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// при сильной накрузке и использовании swap std::string в разы проигрывает из-за дефрагментации
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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 "zalloc.h"
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#include "zalloc_ext.h"
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size_t optimal_zalloc_size(size_t size);
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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_cpp 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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//void *app = zmalloc(1000);
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size_t i, j, idx;
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for (i = 0; i < iterations; i++) {
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idx = (size_t)(rand() % (int)nobj);
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//p[idx] = zalloc_append(p[idx], p[idx]);
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//zrealloc_inplace(&p[idx], i);
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for (j = 0; j < i; j++)
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p[idx] = zalloc_append8(p[idx], ' ');
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}
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for (i = 0; i < nobj; i++)
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zfree(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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