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Use higher time resolution when available in os.nim (#7709)

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Oscar Nihlgård 2018-06-04 14:56:56 +02:00 • committed by Andreas Rumpf
commit 05b447374b
4 changed files with 55 additions and 19 deletions
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22
lib/posix/posix.nim
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@ -82,6 +82,14 @@ const
# Special types
type Sighandler = proc (a: cint) {.noconv.}
const StatHasNanoseconds* = defined(linux) or defined(freebsd) or
defined(openbsd) or defined(dragonfly) ## \
## Boolean flag that indicates if the system supports nanosecond time
## resolution in the fields of ``Stat``. Note that the nanosecond based fields
## (``Stat.st_atim``, ``Stat.st_mtim`` and ``Stat.st_ctim``) can be accessed
## without checking this flag, because this module defines fallback procs
## when they are not available.
# Platform specific stuff
when defined(linux) and defined(amd64):
@ -92,9 +100,9 @@ else:
# There used to be this name in posix.nim a long time ago, not sure why!
{.deprecated: [cSIG_HOLD: SIG_HOLD].}
when not defined(macosx) and not defined(android):
when StatHasNanoseconds:
proc st_atime*(s: Stat): Time {.inline.} =
## Second-granularity time of last access
## Second-granularity time of last access.
result = s.st_atim.tv_sec
proc st_mtime*(s: Stat): Time {.inline.} =
## Second-granularity time of last data modification.
@ -102,6 +110,16 @@ when not defined(macosx) and not defined(android):
proc st_ctime*(s: Stat): Time {.inline.} =
## Second-granularity time of last status change.
result = s.st_ctim.tv_sec
else:
proc st_atim*(s: Stat): TimeSpec {.inline.} =
## Nanosecond-granularity time of last access.
result.tv_sec = s.st_atime
proc st_mtim*(s: Stat): TimeSpec {.inline.} =
## Nanosecond-granularity time of last data modification.
result.tv_sec = s.st_mtime
proc st_ctim*(s: Stat): TimeSpec {.inline.} =
## Nanosecond-granularity time of last data modification.
result.tv_sec = s.st_ctime
when hasAioH:
proc aio_cancel*(a1: cint, a2: ptr Taiocb): cint {.importc, header: "<aio.h>".}