How to implement a hello world shared memory in c/c++ in windows?

Is shared memory stable at the first place?

I prefer this way to inter-开发者_如何学运维process/application communication because that way I don't need the overhead of parsing data.

Is there a good hello world demo on this in c/c++?

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You should check out Boost.Interprocess. It provides the functionality you need and the documentation contains instructions on how to use it.

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There are some issues you need to think of when using shared memory:

1. You need to lock accesses to the shared memory so no process attempts to read from it while another process is writing to it to prevent reading a partially updated (inconstant).
2. You need some way to handle corruption of the shared memory. What happens when a program that is writing to the shared memory crashes and leaves the shared memory in corrupt?

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Is shared memory stable at the first place?

Yes.

I prefer this way to inter-process/application communication because that way I don't need the overhead of parsing data.

You may be wrong.

Is there a good hello world demo on this in c/c++?

I that you want something like Managing Memory-Mapped Files.

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It's as stable as your code.

Note that there's no parsing required with any IPC method that supports binary messages,, such as UDP datagrams, message-mode pipes, or mailslots.

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If you're looking for a simple example, Using Shared Memory in a Dynamic-Link Library from MSDN is probably a good starting point.