add windows package

staging/src/k8s.io/component-base/go.mod

@@ -20,6 +20,7 @@ require (
 	go.uber.org/atomic v1.4.0 // indirect
 	go.uber.org/multierr v1.1.0 // indirect
 	go.uber.org/zap v1.10.0
+	golang.org/x/sys v0.0.0-20201112073958-5cba982894dd
 	k8s.io/apimachinery v0.0.0
 	k8s.io/client-go v0.0.0
 	k8s.io/klog/v2 v2.5.0

staging/src/k8s.io/component-base/metrics/processstarttime.go

@@ -17,11 +17,8 @@ limitations under the License.
 package metrics
 
 import (
-	"os"
 	"time"
 
-	"github.com/prometheus/procfs"
-
 	"k8s.io/klog/v2"
 )
 
@@ -52,16 +49,3 @@ func RegisterProcessStartTime(registrationFunc func(Registerable) error) error {
 	processStartTime.WithLabelValues().Set(start)
 	return nil
 }
-
-func getProcessStart() (float64, error) {
-	pid := os.Getpid()
-	p, err := procfs.NewProc(pid)
-	if err != nil {
-		return 0, err
-	}
-
-	if stat, err := p.Stat(); err == nil {
-		return stat.StartTime()
-	}
-	return 0, err
-}

staging/src/k8s.io/component-base/metrics/processstarttime_others.go

@@ -0,0 +1,38 @@
+// +build !windows
+
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package metrics
+
+import (
+	"os"
+
+	"github.com/prometheus/procfs"
+)
+
+func getProcessStart() (float64, error) {
+	pid := os.Getpid()
+	p, err := procfs.NewProc(pid)
+	if err != nil {
+		return 0, err
+	}
+
+	if stat, err := p.Stat(); err == nil {
+		return stat.StartTime()
+	}
+	return 0, err
+}

staging/src/k8s.io/component-base/metrics/processstarttime_windows.go

@@ -0,0 +1,33 @@
+// +build windows
+
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package metrics
+
+import (
+	"golang.org/x/sys/windows"
+)
+
+func getProcessStart() (float64, error) {
+	processHandle := windows.CurrentProcess()
+
+	var creationTime, exitTime, kernelTime, userTime windows.Filetime
+	if err := windows.GetProcessTimes(processHandle, &creationTime, &exitTime, &kernelTime, &userTime); err != nil {
+		return 0, err
+	}
+	return float64(creationTime.Nanoseconds() / 1e9), nil
+}