Commit 6e759ad2 authored by Dave Cheney's avatar Dave Cheney Committed by Russ Cox

cmd/compile/internal/gc: add runtime/trace support

This change adds runtime/trace support to go tool compile.

Change-Id: I6c496b9b063796123f75eba6af511c53a57c0196
Reviewed-on: https://go-review.googlesource.com/25354
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarDavid Crawshaw <crawshaw@golang.org>
parent 1a3b739b
...@@ -208,6 +208,7 @@ func Main() { ...@@ -208,6 +208,7 @@ func Main() {
flag.StringVar(&cpuprofile, "cpuprofile", "", "write cpu profile to `file`") flag.StringVar(&cpuprofile, "cpuprofile", "", "write cpu profile to `file`")
flag.StringVar(&memprofile, "memprofile", "", "write memory profile to `file`") flag.StringVar(&memprofile, "memprofile", "", "write memory profile to `file`")
flag.Int64Var(&memprofilerate, "memprofilerate", 0, "set runtime.MemProfileRate to `rate`") flag.Int64Var(&memprofilerate, "memprofilerate", 0, "set runtime.MemProfileRate to `rate`")
flag.StringVar(&traceprofile, "traceprofile", "", "write an execution trace to `file`")
flag.StringVar(&benchfile, "bench", "", "append benchmark times to `file`") flag.StringVar(&benchfile, "bench", "", "append benchmark times to `file`")
obj.Flagparse(usage) obj.Flagparse(usage)
......
// 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 go1.7
package gc
import (
"os"
tracepkg "runtime/trace"
)
func init() {
traceHandler = traceHandlerGo17
}
func traceHandlerGo17(traceprofile string) {
f, err := os.Create(traceprofile)
if err != nil {
Fatalf("%v", err)
}
if err := tracepkg.Start(f); err != nil {
Fatalf("%v", err)
}
atExit(tracepkg.Stop)
}
...@@ -33,6 +33,8 @@ var ( ...@@ -33,6 +33,8 @@ var (
cpuprofile string cpuprofile string
memprofile string memprofile string
memprofilerate int64 memprofilerate int64
traceprofile string
traceHandler func(string)
) )
func startProfile() { func startProfile() {
...@@ -61,4 +63,7 @@ func startProfile() { ...@@ -61,4 +63,7 @@ func startProfile() {
} }
}) })
} }
if traceprofile != "" && traceHandler != nil {
traceHandler(traceprofile)
}
} }
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