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kolibrios/programs/develop/ktcc/trunk/libctest/wtalloc.c
siemargl f81857f08c better suballocator
git-svn-id: svn://kolibrios.org@7537 a494cfbc-eb01-0410-851d-a64ba20cac60
2018-11-07 17:27:07 +00:00

132 lines
2.4 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
// suballocator functions
extern void* wtmalloc(size_t size);
extern void wtfree(void *pointer);
extern void* wtrealloc(void* pointer, size_t size);
extern void* wtcalloc (size_t num, size_t size);
extern int wtmalloc_freelist_check();
extern int wtmalloc_poiner_check(void *ptr);
extern void wtdump_alloc_stats();
#ifdef __GNUC__
void* sysmalloc(size_t sz)
{
return malloc(sz);
}
#endif
#define NUMPTR 10000
char *pointers[NUMPTR];
char values[NUMPTR];
int sizes[NUMPTR];
int checkvalues()
{
for (int i = 0; i < NUMPTR; i++)
{
if (!pointers[i]) continue;
assert(wtmalloc_poiner_check(pointers[i]));
for (int j = 0; j < sizes[i]; j++)
assert(pointers[i][j] == values[i]);
}
return 1;
}
int main()
{
char *ptr;
int i, sz;
puts("Test started");
// test start settings
assert(wtmalloc_freelist_check());
// test just single alloc/dealloc
ptr = wtmalloc(1000);
assert(wtmalloc_poiner_check(ptr));
wtfree(ptr);
assert(wtmalloc_freelist_check());
puts("test allocation started");
// test allocation
for (i = 0; i < NUMPTR; i++)
{
sz = rand() % 4200;
pointers[i] = wtmalloc(sz);
sizes[i] = sz;
values[i] = sz % 256;
memset(pointers[i], values[i], sz);
assert(wtmalloc_freelist_check());
}
assert(checkvalues());
puts("test random deallocation started");
// random deallocation
for (i = 0; i < NUMPTR; i++)
{
sz = rand() % 2;
if (sz)
{
wtfree(pointers[i]);
pointers[i] = NULL;
}
}
assert(wtmalloc_freelist_check());
assert(checkvalues());
puts("test allocation in free list gaps started");
// test allocation in free list gaps
for (i = 0; i < NUMPTR; i++)
{
if (pointers[i]) continue;
sz = rand() % 4200;
pointers[i] = wtmalloc(sz);
sizes[i] = sz;
values[i] = sz % 256;
memset(pointers[i], values[i], sz);
}
assert(wtmalloc_freelist_check());
assert(checkvalues());
puts("test realloc started");
// test realloc
for (i = 0; i < NUMPTR; i++)
{
sz = rand() % 4200;
pointers[i] = wtrealloc(pointers[i], sz);
sizes[i] = sz;
memset(pointers[i], values[i], sz);
}
assert(wtmalloc_freelist_check());
assert(checkvalues());
puts("test full deallocation started");
// full deallocation
for (i = 0; i < NUMPTR; i++)
{
wtfree(pointers[i]);
pointers[i] = NULL;
}
assert(wtmalloc_freelist_check());
wtdump_alloc_stats();
printf("\ntests all OK\n");
return 0;
}