diff options
Diffstat (limited to 'lib/std/monotimes.nim')
| -rw-r--r-- | lib/std/monotimes.nim | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/std/monotimes.nim b/lib/std/monotimes.nim index 78736d719..bf6dc776b 100644 --- a/lib/std/monotimes.nim +++ b/lib/std/monotimes.nim @@ -10,17 +10,14 @@ ##[ The `std/monotimes` module implements monotonic timestamps. A monotonic timestamp represents the time that has passed since some system defined -point in time. The monotonic timestamps are guaranteed to always increase, +point in time. The monotonic timestamps are guaranteed not to decrease, meaning that that the following is guaranteed to work: ]## runnableExamples: - import std/os - let a = getMonoTime() - sleep(10) let b = getMonoTime() - assert a < b + assert a <= b ##[ This is not guaranteed for the `times.Time` type! This means that the @@ -79,6 +76,10 @@ when defined(js): elif defined(posix) and not defined(osx): import std/posix +when defined(zephyr): + proc k_uptime_ticks(): int64 {.importc: "k_uptime_ticks", header: "<kernel.h>".} + proc k_ticks_to_ns_floor64(ticks: int64): int64 {.importc: "k_ticks_to_ns_floor64", header: "<kernel.h>".} + elif defined(windows): proc QueryPerformanceCounter(res: var uint64) {. importc: "QueryPerformanceCounter", stdcall, dynlib: "kernel32".} @@ -101,6 +102,9 @@ proc getMonoTime*(): MonoTime {.tags: [TimeEffect].} = mach_timebase_info(machAbsoluteTimeFreq) result = MonoTime(ticks: ticks * machAbsoluteTimeFreq.numer div machAbsoluteTimeFreq.denom) + elif defined(zephyr): + let ticks = k_ticks_to_ns_floor64(k_uptime_ticks()) + result = MonoTime(ticks: ticks) elif defined(posix): var ts: Timespec discard clock_gettime(CLOCK_MONOTONIC, ts) |