没有Boost.Serialization的序列化 [英] Serialization without Boost.Serialization

问题描述

我试图实现一个简单的序列化/反序列化方法，我的代码能够通过网络使用MPI传递一个对象。在理想的情况下，我会使用 Boost.Serialization 和 Boost.MPI

I'm trying to implement a simple serialization/deserialization method for my code to be able to pass an object over the network using MPI. In an ideal world I would have used Boost.Serialization and Boost.MPI for that but they are not installed on some of the clusters I have access to so I'm considering doing this myself.

我的策略是将每个对象序列化为 std :: stringstream 对象，然后使用 MPI_CHAR 作为数据类型通过 MPI_Send 发送消息。在这种情况下，我会传递 std :: stringstream :: str（）:: c_str（）作为指针和 std :: streaingstream :: str（）:: size（）* sizeof（char）作为消息的大小。

My strategy is to serialize every object into a std::stringstream object and then send a message via MPI_Send using MPI_CHAR as the datatype. In such a case I would pass std::stringstream::str()::c_str() as the pointer and std::streaingstream::str()::size()*sizeof(char) as the size of the message.

转换为 std :: stringstream 对象。我的反序列化方法也需要一个 std :: stringstream 对象，反序列化所有的东西。这工作正常，但我不知道如何从 char 的数组创建 std :: stringstream 避免从数组到流的额外副本。我应该改变我的反序列化方法直接使用 char 的数组使用 memcpy 吗？

I've figured how to serialize everything into a std::stringstream object. My deserialization method also takes a std::stringstream object and deserializes everything back. This works fine except I do not know how to create a std::stringstream object from an array of chars and avoid the extra copy from the array into the stream. Should I change my deserialization method to directly work with an array of char using memcpy instead?

推荐答案

这样做的MPI方式将使用 MPI_Pack 和 MPI_Unpack 。当然这是C，可能不像使用C ++功能的东西那么方便。有关简单示例，请参见 http://www.mcs.anl.gov/research/projects/mpi/tutorial/mpiexmpl/src/bcast/C/pack/solution.html

The MPI way of doing this, would be using MPI_Pack and MPI_Unpack. Of course that is C and might not be as convenient as something using C++ features. For a simple example see http://www.mcs.anl.gov/research/projects/mpi/tutorial/mpiexmpl/src/bcast/C/pack/solution.html

这篇关于没有Boost.Serialization的序列化的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！