Pointer Allocator::alloc(size_t size) {
for (int i = 0; i < this->pointers.size() - 1; i++) {
char *end_addr = this->pointers[i].addr + this->pointers[i].size;
if (canAlloc(end_addr, size, this->pointers[i + 1].addr)) {
SmartPointer *new_pointer = new SmartPointer(this, i + 1);
for (auto iter = this->pointers.begin() + i + 1; iter != this->pointers.end() - 1; iter++) {
iter->p->inc();
}
this->pointers.insert(this->pointers.begin() + i + 1, MyPar(end_addr, size, new_pointer));
return Pointer(new_pointer);
}
}
throw AllocError(AllocErrorType::NoMemory, "Alloc failed. No Memory");
}
void Allocator::realloc(Pointer &p, size_t size) {
auto it = std::find(this->pointers.begin() + 1, this->pointers.end() - 1, p);
if (it == this->pointers.end() - 1) {
try {
p = this->alloc(size);
}
catch (...) {
throw AllocError(AllocErrorType::NoMemory, "Realloc Failed. Pointer was not found.");
}
return;
}
if (canAlloc(p.get(), size, (it + 1)->addr)) {
it->setSize(size);
} else {
this->free(p);
try {
p = this->alloc(size);
}
catch (...) {
throw AllocError(AllocErrorType::NoMemory, "Realloc Failed. No Memory.");
}
}
}
// Allocates the specified amount of bytes in the buffer
virtual void* alloc(size_t bytes) {
alignNextAlloc();
if (!canAlloc(bytes)) return NULL;
return doAlloc(bytes);
}
