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Add Crystal::System::Time.ticks #14620

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merged 4 commits into from
May 25, 2024
Merged

Add Crystal::System::Time.ticks #14620

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51d8192
Simplify Crystal::System::Time.monotonic (Windows)
ysbaddaden May 23, 2024
6b33390
Use constants in Crystal::System::Time (UNIX)
ysbaddaden May 23, 2024
426d54d
Add Crystal::System::Time.ticks
ysbaddaden May 23, 2024
6eeb4df
Use class getter as suggested by @straight-shoota
ysbaddaden May 24, 2024
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2 changes: 2 additions & 0 deletions src/crystal/system/time.cr
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@ module Crystal::System::Time
# since `0001-01-01 00:00:00`.
# def self.compute_utc_seconds_and_nanoseconds : {Int64, Int32}

# Returns the current time from the monotonic clock in `{seconds,
# nanoseconds}`.
# def self.monotonic : {Int64, Int32}

# Returns a list of paths where time zone data should be looked up.
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19 changes: 9 additions & 10 deletions src/crystal/system/win32/time.cr
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Expand Up @@ -53,21 +53,20 @@ module Crystal::System::Time
((filetime.dwHighDateTime.to_u64 << 32) | filetime.dwLowDateTime.to_u64).to_f64 / FILETIME_TICKS_PER_SECOND.to_f64
end

@@performance_frequency : Int64 = begin
ret = LibC.QueryPerformanceFrequency(out frequency)
if ret == 0
raise RuntimeError.from_winerror("QueryPerformanceFrequency")
end
@@performance_frequency : Int64?

frequency
private def self.performance_frequency
@@performance_frequency ||= begin
LibC.QueryPerformanceFrequency(out frequency)
frequency
end
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end

def self.monotonic : {Int64, Int32}
if LibC.QueryPerformanceCounter(out ticks) == 0
raise RuntimeError.from_winerror("QueryPerformanceCounter")
end
LibC.QueryPerformanceCounter(out ticks)
frequency = performance_frequency
{ticks // frequency, (ticks.remainder(frequency) * NANOSECONDS_PER_SECOND / frequency).to_i32}

{ticks // @@performance_frequency, (ticks.remainder(@@performance_frequency) * NANOSECONDS_PER_SECOND / @@performance_frequency).to_i32}
end

def self.load_localtime : ::Time::Location?
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