static void *ralloc(void *ptr, size_t size, enum m_state state) {
//LOG("Request for size change to %zd\n", size);
if (size == 0) {
shee(ptr);
return NULL;
}
if (ptr == NULL) {
return shalloc(size);
}
struct block *b = B_HEAD(ptr);
unsigned long size_pow = get_pow(B_SIZE + size);
/* No need for allocation, size would be the same */
if (b->k_size == size_pow) {
return ptr;
}
void *new_ptr;
if (state == ZERO) {
new_ptr = shcalloc(1, size);
} else {
new_ptr = shalloc(size);
}
/* In case of failure, previous data is lost */
if (new_ptr == NULL) {
shee(ptr);
return NULL;
}
/* Previous data must be preserved, if possible */
memcpy(new_ptr, ptr, MIN(B_DATA_SIZE(b), B_DATA_SIZE(B_HEAD(new_ptr))));
shee(ptr);
return new_ptr;
}
int main(int argc, char *argv[])
{
char *str;
if (argc > 1) {
str = shalloc(strlen(argv[1]) + 1);
sprintf(str, "%s\n", argv[1]);
} else {
str = shalloc(sizeof(HELLO));
sprintf(str, HELLO);
}
shapass(str);
return 0;
}
void *malloc(size_t size) {
LOG("someone called malloc()\n");
return shalloc(size);
}
