50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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u_long NBUCKETS = 2000;
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u_long NOPS = 200000;
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u_long NSIZE = (16*1024);
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char **foo;
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int
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main(int argc, char **argv)
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{
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int i,j,k;
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if (argc > 1) NOPS = strtoul(argv[1],0,0);
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if (argc > 2) NBUCKETS = strtoul(argv[2],0,0);
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if (argc > 3) NSIZE = strtoul(argv[3],0,0);
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printf("BRK(0)=%x ",sbrk(0));
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foo = malloc (sizeof *foo * NBUCKETS);
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memset(foo,0,sizeof *foo * NBUCKETS);
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for (i = 1; i <= 4096; i+=i) {
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for (j = 0 ; j < 40960/i && j < NBUCKETS; j++) {
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foo[j] = malloc(i);
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}
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for (j = 0 ; j < 40960/i && j < NBUCKETS; j++) {
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free(foo[j]);
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foo[j] = 0;
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}
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}
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for (i = 0 ; i < NOPS ; i++) {
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j = random() % NBUCKETS;
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k = random() % NSIZE;
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foo[j] = realloc(foo[j], k & 1 ? 0 : k);
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if (foo[j])
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foo[j][0] = 1;
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}
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printf("BRK(1)=%x ",sbrk(0));
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for (j = 0 ; j < NBUCKETS ; j++) {
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if (foo[j]) {
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free(foo[j]);
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foo[j] = 0;
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}
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}
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printf("BRK(2)=%x NOPS=%lu NBUCKETS=%lu NSIZE=%lu\n",
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sbrk(0),NOPS,NBUCKETS,NSIZE);
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return 0;
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}
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