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dirstate-v2: Truncate directory mtimes to 31 bits of seconds

Authored by SimonSapin on Oct 12 2021, 1:00 PM.



… instead of 64 bits, while keeping the sub-second presision.
This brings the size of one timestamp from 12 bytes to 8 bytes.

31 bits is chosen instead of 32 because that’s already what happens for the
mtime of files and symlinks, because dirstate-v1 uses negative i32 values as

Later we’ll add sub-second precision for file/symlink mtimes, making their
dirstate-v2 representation the same as for directories.

Diff Detail

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Automatic diff as part of commit; unit tests not applicable.

Event Timeline

SimonSapin created this revision.Oct 12 2021, 1:00 PM
This revision was not accepted when it landed; it landed in state Needs Review.
This revision was automatically updated to reflect the committed changes.