在整个系统中使用 std::chrono::steady_clock 时间是否正确？
[英]Is it correct to use std::chrono::steady_clock time across the system?
问题描述
I have a file with header time as std::chrono::steady_clock parameter.
我有一个标头时间作为std::chrono::steady_clock参数的文件。 The different server will be writing them on the disk.不同的服务器会将它们写入磁盘。 During the usage of file, I will be comparing them to find the latest time.在使用文件的过程中，我会比较它们以找到最新的时间。 I am confused with https://en.cppreference.com/w/cpp/chrono/steady_clock我对https://en.cppreference.com/w/cpp/chrono/steady_clock感到困惑
Updates:更新：
Q: Whether the comparison provides me the latest file or not? Q:比较是否给我提供了最新的文件？
Q: Should I use the system_clock instead of steady_clock?问：我应该使用 system_clock 而不是 stable_clock 吗？
1 个解决方案
解决方案1
2 已采纳 2020-10-16 14:18:39
Q: Whether the comparison provides me the latest file or not? Q:比较是否给我提供了最新的文件？
Answer: With reference to link shared above:答：参考上面分享的链接：
"This clock is not related to wall clock time (for example, it can be time since last reboot), and is most suitable for measuring intervals."
It does not seem appropriate for time stamping in a file.它似乎不适合在文件中添加时间戳。 For example it seems like it could be time since the process started, and different processes would not agree on the current std::chrono::steady_clock time.例如，似乎自进程开始以来可能是时间，并且不同的进程不会就当前的std::chrono::steady_clock时间达成一致。
Retrieved from @François Andrieux's comment might help someone here.从@François Andrieux 的评论中检索可能对这里的人有所帮助。
Q: Should I use the system_clock instead of steady_clock?问：我应该使用 system_clock 而不是 stable_clock 吗？
Answer: When we are working on different servers or systems and trying to compare the std::chrono::steady_clock it will be wrong.答：当我们在不同的服务器或系统上工作并尝试比较std::chrono::steady_clock它会出错。 Use std::chrono::system_clock instead.改用 std::chrono::system_clock 。
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