custom-kube-scheduler/kubernetes-v1.15.4/vendor/github.com/google/certificate-transparency-go/x509/root.go

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package x509

import "sync"

var (
	once           sync.Once
	systemRoots    *CertPool
	systemRootsErr error
)

func systemRootsPool() *CertPool {
	once.Do(initSystemRoots)
	return systemRoots
}

func initSystemRoots() {
	systemRoots, systemRootsErr = loadSystemRoots()
}