1// Copyright 2017 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
5package trace_test
6
7import (
8	"fmt"
9	"log"
10	"os"
11	"runtime/trace"
12)
13
14// Example demonstrates the use of the trace package to trace
15// the execution of a Go program. The trace output will be
16// written to the file trace.out
17func Example() {
18	f, err := os.Create("trace.out")
19	if err != nil {
20		log.Fatalf("failed to create trace output file: %v", err)
21	}
22	defer func() {
23		if err := f.Close(); err != nil {
24			log.Fatalf("failed to close trace file: %v", err)
25		}
26	}()
27
28	if err := trace.Start(f); err != nil {
29		log.Fatalf("failed to start trace: %v", err)
30	}
31	defer trace.Stop()
32
33	// your program here
34	RunMyProgram()
35}
36
37func RunMyProgram() {
38	fmt.Printf("this function will be traced")
39}
40