From 85b51e4e779360a4f2ead4404bf4d6b547f6d49d Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Sun, 24 Nov 2013 20:41:00 +0100
Subject: Stats: use GetProcessTimes() on WIN32 to determine MPD uptime

Don't use GTimer if the operating system is able to tell us the
uptime.
---
 src/system/Clock.cxx | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'src/system/Clock.cxx')

diff --git a/src/system/Clock.cxx b/src/system/Clock.cxx
index 347997a44..17b221c15 100644
--- a/src/system/Clock.cxx
+++ b/src/system/Clock.cxx
@@ -96,3 +96,29 @@ MonotonicClockUS(void)
 #endif
 }
 
+#ifdef WIN32
+
+gcc_const
+static unsigned
+DeltaFileTimeS(FILETIME a, FILETIME b)
+{
+	ULARGE_INTEGER a2, b2;
+	b2.LowPart = b.dwLowDateTime;
+	b2.HighPart = b.dwHighDateTime;
+	a2.LowPart = a.dwLowDateTime;
+	a2.HighPart = a.dwHighDateTime;
+	return (a2.QuadPart - b2.QuadPart) / 10000000;
+}
+
+unsigned
+GetProcessUptimeS()
+{
+	FILETIME creation_time, now;
+	GetProcessTimes(GetCurrentProcess(), &creation_time,
+			nullptr, nullptr, nullptr);
+	GetSystemTimeAsFileTime(&now);
+
+	return DeltaFileTimeS(now, creation_time);
+}
+
+#endif
-- 
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