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()
}
}()
}