Google CMD goimports_gc.go

// Copyright 2016 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.
// +build gc
package main
import (
    "flag"
    "runtime/trace"
)
var traceProfile = flag.String("trace", "", "trace profile output")
func doTrace() func() {
    if *traceProfile != "" {
        bw, flush := bufferedFileWriter(*traceProfile)
        trace.Start(bw)
        return func() {
            flush()
            trace.Stop()
        }
    }
    return func() {}
}