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5e089a2cd1
Signed-off-by: Connor <zbk602423539@gmail.com> Co-authored-by: Nick Cameron <nrc@ncameron.org> Co-authored-by: linning <linningde25@gmail.com> Co-authored-by: YangKeao <keao.yang@yahoo.com> Co-authored-by: andylokandy <andylokandy@hotmail.com> Co-authored-by: Iosmanthus Teng <myosmanthustree@gmail.com>
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
// Copyright 2017 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package server
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import (
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"context"
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"time"
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"github.com/pingcap/log"
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"go.uber.org/zap"
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)
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// StartMonitor calls systimeErrHandler if system time jump backward.
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func StartMonitor(ctx context.Context, now func() time.Time, systimeErrHandler func()) {
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log.Info("start system time monitor")
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tick := time.NewTicker(100 * time.Millisecond)
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defer tick.Stop()
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for {
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last := now().UnixNano()
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select {
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case <-tick.C:
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if now().UnixNano() < last {
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log.Error("system time jump backward", zap.Int64("last", last))
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systimeErrHandler()
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}
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case <-ctx.Done():
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return
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}
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}
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}
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