uint8_t *make_space(size_t len) {
if (len > static_cast<size_t>(cur_ - buf_)) {
- auto old_size = size();
- auto largest_align = AlignOf<largest_scalar_t>();
- reserved_ += (std::max)(len, growth_policy(reserved_));
- // Round up to avoid undefined behavior from unaligned loads and stores.
- reserved_ = (reserved_ + (largest_align - 1)) & ~(largest_align - 1);
- auto new_buf = allocator_.allocate(reserved_);
- auto new_cur = new_buf + reserved_ - old_size;
- memcpy(new_cur, cur_, old_size);
- cur_ = new_cur;
- allocator_.deallocate(buf_);
- buf_ = new_buf;
+ reallocate(len);
}
cur_ -= len;
// Beyond this, signed offsets may not have enough range:
uint8_t *buf_;
uint8_t *cur_; // Points at location between empty (below) and used (above).
const simple_allocator &allocator_;
+
+ void reallocate(size_t len) {
+ auto old_size = size();
+ auto largest_align = AlignOf<largest_scalar_t>();
+ reserved_ += (std::max)(len, growth_policy(reserved_));
+ // Round up to avoid undefined behavior from unaligned loads and stores.
+ reserved_ = (reserved_ + (largest_align - 1)) & ~(largest_align - 1);
+ auto new_buf = allocator_.allocate(reserved_);
+ auto new_cur = new_buf + reserved_ - old_size;
+ memcpy(new_cur, cur_, old_size);
+ cur_ = new_cur;
+ allocator_.deallocate(buf_);
+ buf_ = new_buf;
+ }
};
// Converts a Field ID to a virtual table offset.