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// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package main
import (
"fmt"
"io/ioutil"
"os"
"os/signal"
"runtime"
"syscall"
)
func init() {
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, syscall.SIGUSR1)
fmt.Printf("Listening on SIGUSR1\n")
go func() {
for range sigChan {
fmt.Printf("Receive SIGUSR1\n")
// Dump stack.
buf := make([]byte, 4*1024*1024)
buf = buf[:runtime.Stack(buf, true)]
if err := ioutil.WriteFile("stack.log", buf, 0644); err != nil {
fmt.Printf("Unable to dump stack trace: %s\n", err)
}
}
}()
}
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