在 C++ 中获取当前实例（例如 pid）的唯一值的独立于平台的方法是什么？
我想以平台无关的方式获取C++中当前实例的某种唯一整数值（无论它是进程ID还是其他任何东西）（这意味着没有#if #否则宏开关）。
基于时间的值不可靠，因为两个实例可以同时启动。
有什么办法可以实现这一点吗？
编辑：它不必是全球唯一的。它只需要在系统范围内是唯一的。
I would like to get a some kind (doesn't matter whether it's a process id or anything) of a unique integer value of current instance in C++ in a platform independent manner (that means no #if #else macro switch).
time based value would not be reliable since two instances can start at the same time.
Is there any way of achieving this?
EDIT: It doesn't have to be globally unique. it just needs to be unique system wide.
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查看Boost 流程。可能正是您正在寻找的东西。如果您不想包含该库，可以看看该功能是如何实现的。
Take a look at Boost process. Might be exactly what you're looking for. If you don't want to include the library, you can take a look at how the functionality is implemented.
长话短说，答案是否定的，除非使用特定于平台的功能。
[C++03]
C++ 语言本身没有提供任何机制来执行此操作。事实上，C++ 本身对进程或进程间通信一无所知。不使用特定于平台的功能 - 要么由您手动编写，这意味着
#ifdefs，要么在某些跨平台的第三部分库（如 Boost）中，这也意味着#ifdefcode>s——这是无法完成的。...并且...
[C++11]
C++ 语言有线程的基本概念，但它没有提供（我可以看到的）创建进程间通信机制的机制，因此上述内容仍然适用。
Long story short, the answer is no, not without using platform-specific functionality.
[C++03]
The C++ language itself does not provide any mechanism to do this. In fact, C++ itself knows nothing about processes or interprocess communication. Without using platform-specific functionality -- either hand-rolled by you, which means
#ifdefs, or in some cross-platform 3rd part library like Boost, which also means#ifdefs -- this cannot be done....and...
[C++11]
The C++ language has a basic concept of threads, but it provides no mechanism (that I can see) to create an interprocess communication mechanism, so the above still applies.
这可能有点过头了，但请查看 QUuid
This might be an overkill, but take a look into QUuid
我认为，您需要通用唯一标识符
I think, you need Universally unique identifier