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Iristyle/uptime.ps1

Created September 8, 2016 21:08
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Windows API GetTickCount64 used to retrieve system uptime on Windows with 64-bit resolution (5000+ years)
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uptime.ps1
$signature = @'
[DllImport(@"kernel32.dll", SetLastError=true)]
public static extern UInt64 GetTickCount64 ();
'@
$type = Add-Type -MemberDefinition $signature -Name SystemTime -Namespace GetTickCount64 -PassThru
[System.TimeSpan]::FromMilliseconds($type::GetTickCount64())
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Iristyle commented Sep 8, 2016

This API exists on Vista+ - no 32-bit vs 64-bit issues.

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