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debug_handler.go
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/
debug_handler.go
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// +build !windows
// Copyright 2014-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may
// not use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file 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.
package sighandlers
import (
"os"
"os/signal"
"runtime"
"syscall"
"time"
"github.com/cihub/seelog"
)
func StartDebugHandler() {
signalChannel := make(chan os.Signal, 1)
signal.Notify(signalChannel, syscall.SIGUSR1)
go func() {
for range signalChannel {
// "640 k ought to be enough for anybody." - Bill Gates, 1981
stackDump := make([]byte, 640*1024)
n := runtime.Stack(stackDump, true)
// Resize the buffer to the size of the actual stack
stackDump = stackDump[:n]
seelog.Criticalf("====== STACKTRACE ======\n%v\n%s\n====== /STACKTRACE ======", time.Now(), stackDump)
}
}()
}