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57 lines
1.5 KiB
57 lines
1.5 KiB
// Copyright 2018 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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//go:build linux || darwin || freebsd || unix
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// +build linux darwin freebsd unix
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package signal
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import (
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"log"
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"os"
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"os/signal"
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"runtime"
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"syscall"
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"github.com/pingcap/tidb/util/logutil"
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"go.uber.org/zap"
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)
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// SetupSignalHandler setup signal handler for TiDB Server
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func SetupSignalHandler(shutdownFunc func(bool)) {
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usrDefSignalChan := make(chan os.Signal, 1)
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signal.Notify(usrDefSignalChan, syscall.SIGUSR1)
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go func() {
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buf := make([]byte, 1<<16)
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for {
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sig := <-usrDefSignalChan
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if sig == syscall.SIGUSR1 {
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stackLen := runtime.Stack(buf, true)
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log.Printf("\n=== Got signal [%s] to dump goroutine stack. ===\n%s\n=== Finished dumping goroutine stack. ===\n", sig, buf[:stackLen])
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}
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}
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}()
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closeSignalChan := make(chan os.Signal, 1)
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signal.Notify(closeSignalChan,
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syscall.SIGHUP,
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syscall.SIGINT,
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syscall.SIGTERM,
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syscall.SIGQUIT)
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go func() {
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sig := <-closeSignalChan
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logutil.BgLogger().Info("got signal to exit", zap.Stringer("signal", sig))
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shutdownFunc(sig == syscall.SIGQUIT)
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}()
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}
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