void allocateBuffer()

in dispenso/concurrent_object_arena.h [302:326]

• 21 lines of code
• 5 McCabe index (conditional complexity)

  void allocateBuffer() {
    void* ptr = detail::alignedMalloc(kBufferSize * sizeof(T), alignment);
#if defined(__cpp_exceptions)
    if (ptr == nullptr)
      throw std::bad_alloc();
#endif // __cpp_exceptions

    if (buffersPos_ < buffersSize_) {
      buffers_.load(std::memory_order_relaxed)[buffersPos_++] = static_cast<T*>(ptr);
    } else {
      const Index oldBuffersSize = buffersSize_;
      T** oldBuffers = buffers_.load(std::memory_order_relaxed);

      buffersSize_ = oldBuffersSize == 0 ? 2 : oldBuffersSize * 2;
      T** newBuffers = new T*[buffersSize_];

      if (oldBuffers != nullptr) {
        std::memcpy(newBuffers, oldBuffers, sizeof(T*) * oldBuffersSize);
        deleteLater_.push_back(oldBuffers);
      }

      newBuffers[buffersPos_++] = static_cast<T*>(ptr);
      buffers_.store(newBuffers, std::memory_order_relaxed);
    }
  }