diff options
Diffstat (limited to 'src/cmd/compile/internal/gc/util.go')
-rw-r--r-- | src/cmd/compile/internal/gc/util.go | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/cmd/compile/internal/gc/util.go b/src/cmd/compile/internal/gc/util.go index 56fd137de2..dcac0ce79a 100644 --- a/src/cmd/compile/internal/gc/util.go +++ b/src/cmd/compile/internal/gc/util.go @@ -8,12 +8,11 @@ import ( "os" "runtime" "runtime/pprof" + tracepkg "runtime/trace" "cmd/compile/internal/base" ) -var traceHandler func(string) - func startProfile() { if base.Flag.CPUProfile != "" { f, err := os.Create(base.Flag.CPUProfile) @@ -64,13 +63,20 @@ func startProfile() { if err != nil { base.Fatalf("%v", err) } - startMutexProfiling() + runtime.SetMutexProfileFraction(1) base.AtExit(func() { pprof.Lookup("mutex").WriteTo(f, 0) f.Close() }) } - if base.Flag.TraceProfile != "" && traceHandler != nil { - traceHandler(base.Flag.TraceProfile) + if base.Flag.TraceProfile != "" { + f, err := os.Create(base.Flag.TraceProfile) + if err != nil { + base.Fatalf("%v", err) + } + if err := tracepkg.Start(f); err != nil { + base.Fatalf("%v", err) + } + base.AtExit(tracepkg.Stop) } } |