tidb sigusr1_unix 源码
tidb sigusr1_unix 代码
文件路径：/br/pkg/lightning/sigusr1_unix.go
// Copyright 2020 PingCAP, Inc.
//
// 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.
//go:build linux || darwin || freebsd || unix
package lightning
import (
"os"
"os/signal"
"syscall"
"github.com/pingcap/tidb/br/pkg/lightning/log"
"go.uber.org/zap"
)
// handleSigUsr1 listens for the SIGUSR1 signal and executes `handler()` every time it is received.
func handleSigUsr1(handler func()) {
ch := make(chan os.Signal, 1)
signal.Notify(ch, syscall.SIGUSR1)
go func() {
for sig := range ch {
log.L().Debug("received signal", zap.Stringer("signal", sig))
handler()
}
}()
}
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