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Fix clock_gettime() is not available on old MacOS.

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cheatfate 2019-09-03 17:30:28 +03:00
parent 7029f8bc1e
commit a039011f5b
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2 changed files with 24 additions and 10 deletions
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2
chronos.nimble
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@ -1,5 +1,5 @@
packageName = "chronos" packageName = "chronos"
version = "2.2.9" version = "2.3.0"
author = "Status Research & Development GmbH" author = "Status Research & Development GmbH"
description = "Chronos" description = "Chronos"
license = "Apache License 2.0 or MIT" license = "Apache License 2.0 or MIT"

32
chronos/timer.nim
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@ -101,22 +101,36 @@ elif defined(macosx):
result = (cast[uint64](t.tv_sec) * 1_000_000_000 + result = (cast[uint64](t.tv_sec) * 1_000_000_000 +
cast[uint64](t.tv_usec) * 1_000) cast[uint64](t.tv_usec) * 1_000)
else: else:
from posix import clock_gettime, Timespec, CLOCK_MONOTONIC type
MachTimebaseInfo {.importc: "struct mach_timebase_info",
header: "<mach/mach_time.h>", pure, final.} = object
numer: uint32
denom: uint32
proc mach_timebase_info(info: var MachTimebaseInfo) {.importc,
header: "<mach/mach_time.h>".}
proc mach_absolute_time(): uint64 {.importc, header: "<mach/mach_time.h>".}
var queryFrequencyN: uint64
var queryFrequencyD: uint64
proc setupQueryFrequence() =
var info: MachTimebaseInfo
mach_timebase_info(info)
queryFrequencyN = info.numer
queryFrequencyD = info.denom
proc fastEpochTime*(): uint64 {. proc fastEpochTime*(): uint64 {.
inline, deprecated: "Use Moment.now()".} = inline, deprecated: "Use Moment.now()".} =
## Procedure's resolution is millisecond. ## Procedure's resolution is millisecond.
var t: Timespec result = (mach_absolute_time() * queryFrequencyN) div queryFrequencyD
discard clock_gettime(CLOCK_MONOTONIC, t) result = result div 1_000_000
result = ((cast[uint64](t.tv_sec) * 1_000) +
(cast[uint64](t.tv_nsec) div 1_000_000))
proc fastEpochTimeNano(): uint64 {.inline.} = proc fastEpochTimeNano(): uint64 {.inline.} =
## Procedure's resolution is nanosecond. ## Procedure's resolution is nanosecond.
var t: Timespec result = (mach_absolute_time() * queryFrequencyN) div queryFrequencyD
discard clock_gettime(CLOCK_MONOTONIC, t)
result = cast[uint64](t.tv_sec) * 1_000_000_000'u64 + setupQueryFrequence()
cast[uint64](t.tv_nsec)
elif defined(posix): elif defined(posix):
from posix import clock_gettime, Timespec, CLOCK_REALTIME, CLOCK_MONOTONIC from posix import clock_gettime, Timespec, CLOCK_REALTIME, CLOCK_MONOTONIC