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0e9f43f Aug 12, 2016
27 lines (21 sloc) 483 Bytes
// 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() {}
}