Testing for linux cpuinfo

internal/processor/win_cpu.go

@@ -0,0 +1,48 @@
+//go:build windows
+
+package processor
+
+import (
+	"rpi5-health/internal/windows_system"
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+type DWORD uint32
+
+type PFILETIME struct {
+	dwLowDateTime  DWORD
+	dwHighDateTime DWORD
+}
+
+func getWinCpuInfo(getSystemTimes *windows.LazyProc) ProcessorInformation {
+	var lpIdleTime PFILETIME
+	var lpKernelTime PFILETIME
+	var lpUserTime PFILETIME
+
+	getSystemTimes.Call(
+		uintptr(unsafe.Pointer(&lpIdleTime)),
+		uintptr(unsafe.Pointer(&lpKernelTime)),
+		uintptr(unsafe.Pointer(&lpUserTime)),
+	)
+
+	timeSpentIdlingTicks := fileTimeToTicks(lpIdleTime)
+	timeSpentByKernelTicks := fileTimeToTicks(lpKernelTime) - timeSpentIdlingTicks // kernel time includes idling by default
+	timeSpentByUserTicks := fileTimeToTicks(lpUserTime)
+
+	return ProcessorInformation{
+		IdleTimeSinceBoot:   timeSpentIdlingTicks,
+		KernelTimeSinceBoot: timeSpentByKernelTicks,
+		UserTimeSinceBoot:   timeSpentByUserTicks,
+	}
+}
+
+func fileTimeToTicks(filetime PFILETIME) uint64 {
+	// 100 nanosecond intervals since 1601, january 1
+	return (uint64(filetime.dwHighDateTime) << 32) | uint64(filetime.dwLowDateTime)
+}
+
+func GetCPUInformation() ProcessorInformation {
+	return getWinCpuInfo(windows_system.GetWindowsTools().SystemTimes)
+}