Bug 15803 – std.file should support sub-second file time precision on POSIX
Status
RESOLVED
Resolution
FIXED
Severity
enhancement
Priority
P1
Component
phobos
Product
D
Version
D2
Platform
All
OS
All
Creation time
2016-03-16T18:19:00Z
Last change time
2016-04-22T23:20:45Z
Keywords
pull
Assigned to
dlang-bugzilla
Creator
dlang-bugzilla
Comments
Comment #0 by dlang-bugzilla — 2016-03-16T18:19:05Z
Modern POSIX-like operating systems and filesystems expose sub-second file time resolution through various extensions. Currently, std.file does not utilize them, only using the time_t values which offer precision with only second granularity. Since SysTime (the format used by std.file for file times) supports hectananosecond precision, std.file needs to detect the presence of these extensions (as declared in Druntime), and provide seamless interoperability through them to achieve full timestamp precision for files.
Comment #1 by dlang-bugzilla — 2016-03-16T18:26:15Z
Setting timestamps is already done with full resolution (toTimeVal + utimes).
Comment #2 by dlang-bugzilla — 2016-03-16T19:50:55Z
Comment #3 by dlang-bugzilla — 2016-03-16T21:17:26Z
(In reply to Vladimir Panteleev from comment #1)
> Setting timestamps is already done with full resolution (toTimeVal + utimes).
Actually, utimes does not offer nanosecond precision. Instead, utimensat should be used when available.
Comment #4 by github-bugzilla — 2016-04-22T23:20:45Z