Split <chrono> into <__msvc_chrono.hpp>
#2604
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barcharcraz
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Mar 9, 2022
StephanTLavavej
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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This contains @cpplearner's commits in #2600 to split
<chrono>into a smaller internal header containing classic machinery (a strategy used successfully in the past), with an additional commit to rename this header to follow our modern naming convention.(
<__msvc_meow.hpp>clearly indicates "internal, implementation-specific, not for public consumption", and all recently added headers have followed that pattern.<xmeow.h>is less obviously internal. We don't use extensionless<xmeow>anymore because that requires changing the IDE's lists of extensionless headers.)This is a separate PR because we want to prioritize the header surgery for VS 2022 17.2 Preview 3 (low risk, high throughput gain). Thanks again to @cpplearner who did all the hard work here - I reviewed the split to make sure nothing was lost or altered unintentionally. (The only thing being dropped with a single comment
// [time.clock.file], which I'm perfectly happy with.)Works towards #2003.
Microsoft-internal build/setup changes will be necessary for this new header.