Source file src/runtime/debug/stack.go

Documentation: runtime/debug

		 1  // Copyright 2011 The Go Authors. All rights reserved.
		 2  // Use of this source code is governed by a BSD-style
		 3  // license that can be found in the LICENSE file.
		 4  
		 5  // Package debug contains facilities for programs to debug themselves while
		 6  // they are running.
		 7  package debug
		 8  
		 9  import (
		10  	"os"
		11  	"runtime"
		12  )
		13  
		14  // PrintStack prints to standard error the stack trace returned by runtime.Stack.
		15  func PrintStack() {
		16  	os.Stderr.Write(Stack())
		17  }
		18  
		19  // Stack returns a formatted stack trace of the goroutine that calls it.
		20  // It calls runtime.Stack with a large enough buffer to capture the entire trace.
		21  func Stack() []byte {
		22  	buf := make([]byte, 1024)
		23  	for {
		24  		n := runtime.Stack(buf, false)
		25  		if n < len(buf) {
		26  			return buf[:n]
		27  		}
		28  		buf = make([]byte, 2*len(buf))
		29  	}
		30  }
		31  

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