void *mm_malloc(MM *mm, size_t size)
{
void *ret;
if (!mm_lock(mm))
return NULL;
ret = mm_malloc_nolock(mm, size);
mm_unlock(mm);
return ret;
}
size_t mm_available(MM *mm)
{
size_t available;
if (mm != NULL && mm_lock(mm))
{
available = mm->available;
mm_unlock(mm);
return available;
}
return 0;
}
size_t mm_sizeof(MM *mm, void *x)
{
mm_mem_head *p;
size_t ret;
if (mm == NULL || x == NULL || !mm_lock(mm))
return 0;
p = PTR_TO_HEAD(x);
ret = p->size;
mm_unlock(mm);
return ret;
}
size_t mm_maxsize(MM *mm)
{
size_t ret = MM_SIZE(0);
mm_free_bucket *p;
if (!mm_lock(mm))
return 0;
p = mm->free_list;
while (p != NULL)
{
if (p->size > ret)
ret = p->size;
p = p->next;
}
mm_unlock(mm);
return ret - MM_SIZE(0);
}
int MM_unlock(void)
{
if (mm_global == NULL)
return FALSE;
return mm_unlock(mm_global);
}
void mm_free(MM *mm, void *x)
{
mm_lock(mm);
mm_free_nolock(mm, x);
mm_unlock(mm);
}
