Method ~CPUChunk

tensorflow/core/framework/ev_allocator.cc:45–47

     : Chunk<CPUChunk>(chunk_size, slot_size) {} 

  ~CPUChunk() {
    port::AlignedFree(start_);
  }
 
  void GetMemBlock() override {
    start_ = (char *)port::AlignedMalloc(chunk_size_, kPageSize);