blob: 952d834bc43bb0d41c3419d9a798634f3b514b73 [file] [log] [blame]
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package debug contains facilities for programs to debug themselves while
// they are running.
package debug
import (
"os"
"runtime"
)
// PrintStack prints to standard error the stack trace returned by Stack.
func PrintStack() {
os.Stderr.Write(Stack())
}
// Stack returns a formatted stack trace of the goroutine that calls it.
// For each routine, it includes the source line information and PC value,
// then attempts to discover, for Go functions, the calling function or
// method.
func Stack() []byte {
buf := make([]byte, 1024)
for {
n := runtime.Stack(buf, false)
if n < len(buf) {
return buf[:n]
}
buf = make([]byte, 2*len(buf))
}
}