Testing for linux cpuinfo

internal/processor/cpu.go

@@ -0,0 +1,34 @@
+package processor
+
+import "time"
+
+type ProcessorInformation struct {
+	IdleTimeSinceBoot   uint64
+	KernelTimeSinceBoot uint64
+	UserTimeSinceBoot   uint64
+}
+
+func (procInfo ProcessorInformation) Usage() (
+	TotalCPUUsage float64,
+	KernelCPUUsage float64,
+	UserCPUUsage float64,
+	IdleCPUUsage float64,
+) {
+	first := GetCPUInformation()
+	time.Sleep(time.Second)
+	second := GetCPUInformation()
+
+	deltaIdleTime := second.IdleTimeSinceBoot - first.IdleTimeSinceBoot
+	deltaKernelTime := second.KernelTimeSinceBoot - first.KernelTimeSinceBoot
+	deltaUserTime := second.UserTimeSinceBoot - first.UserTimeSinceBoot
+	deltaTotalTime := deltaIdleTime + deltaKernelTime + deltaUserTime
+
+	if deltaTotalTime > 0 {
+		TotalCPUUsage = ((float64(deltaKernelTime) + float64(deltaUserTime)) / float64(deltaTotalTime)) * 100
+		UserCPUUsage = (float64(deltaUserTime) / float64(deltaTotalTime)) * 100
+		KernelCPUUsage = (float64(deltaKernelTime) / float64(deltaTotalTime)) * 100
+		IdleCPUUsage = (float64(deltaIdleTime) / float64(deltaTotalTime)) * 100
+	}
+
+	return TotalCPUUsage, KernelCPUUsage, UserCPUUsage, IdleCPUUsage
+}