Method get

src/bthread/fd.cpp:87–97

    }

    butil::atomic<T>* get(size_t index) const {
        const size_t block_index = index / BLOCK_SIZE;
        if (__builtin_expect(block_index < NBLOCK, 1)) {
            const size_t block_offset = index - block_index * BLOCK_SIZE;
            Block* const b = _blocks[block_index].load(butil::memory_order_consume);
            if (__builtin_expect(b != NULL, 1)) {
                return b->items + block_offset;
            }
        }
        return NULL;
    }

private:
    butil::atomic<Block*> _blocks[NBLOCK];