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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <openssl/crypto.h>
#define CHUNK_SIZE 256
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
static void *myalloc(void)
{
size_t size = (random() &0xfff);
return OPENSSL_malloc(size);
}
int main(int argc, const char *argv[])
{
void *mem[50];
int i;
printf("\nAlloc array\n\n");
for (i = 0; i < ARRAY_SIZE(mem); i++)
mem[i] = myalloc();
printf("\nFree array ascending\n\n");
for (i = 0; i < ARRAY_SIZE(mem); i++)
OPENSSL_free(mem[i]);
printf("\nAlloc array\n\n");
for (i = 0; i < ARRAY_SIZE(mem); i++)
mem[i] = myalloc();
printf("\nFree array descending\n\n");
for (i = ARRAY_SIZE(mem) - 1; i >=0; i--)
OPENSSL_free(mem[i]);
printf("\nAlloc array\n\n");
for (i = 0; i < ARRAY_SIZE(mem); i++)
mem[i] = myalloc();
printf("\nFree *2\n\n");
for (i = 0; i < ARRAY_SIZE(mem); i += 2)
OPENSSL_free(mem[i]);
printf("\nFree holes\n\n");
for (i = 1; i < ARRAY_SIZE(mem); i += 2)
OPENSSL_free(mem[i]);
printf("\nAlloc array for split\n\n");
mem[1] = OPENSSL_malloc(0x10000);
mem[0] = OPENSSL_malloc(1);
OPENSSL_free(mem[1]);
for (i = 1; i < ARRAY_SIZE(mem); i++)
mem[i] = myalloc();
printf("\nFree *2\n\n");
for (i = 0; i < ARRAY_SIZE(mem); i += 2)
OPENSSL_free(mem[i]);
printf("\nFree holes\n\n");
for (i = 1; i < ARRAY_SIZE(mem); i += 2)
OPENSSL_free(mem[i]);
printf("\nForce Allocation across the segment boundary\n\n");
mem[0] = OPENSSL_malloc(0x1ff000);
for (i = 1; i < ARRAY_SIZE(mem); i++)
mem[i] = myalloc();
printf("\nFree *2\n\n");
for (i = 0; i < ARRAY_SIZE(mem); i += 2)
OPENSSL_free(mem[i]);
printf("\nFree holes\n\n");
for (i = 1; i < ARRAY_SIZE(mem); i += 2)
OPENSSL_free(mem[i]);
printf("\nFail oversize allocation\n\n");
mem[0] = OPENSSL_malloc(2*1024*1024);
if (mem[0] != NULL)
printf("FAILED\n");
printf("\n100 Random allocations and frees\n\n");
memset(mem, 0, sizeof(mem));
for (i = 0; i < 300; i++) {
int j = random()%ARRAY_SIZE(mem);
if (mem[j]) {
OPENSSL_free(mem[j]);
mem[j] = NULL;
} else {
mem[j] = myalloc();
}
}
for (i = 0; i < ARRAY_SIZE(mem); i++)
OPENSSL_free(mem[i]);
exit(0);
}
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