cmd: vendor golang.org/x/telemetry@a740542

Commands run:
	go get golang.org/x/telemetry@a740542
	go mod tidy
	go mod vendor

Change-Id: I8b1a71adc05f3c54f9492dfb9cfd1873727e5680
Reviewed-on: https://go-review.googlesource.com/c/go/+/594017
Reviewed-by: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

src/cmd/go.mod

@@ -9,7 +9,7 @@ require (
 	golang.org/x/mod v0.18.0
 	golang.org/x/sync v0.7.0
 	golang.org/x/sys v0.21.0
-	golang.org/x/telemetry v0.0.0-20240621183135-b4de734908f6
+	golang.org/x/telemetry v0.0.0-20240621194115-a740542b267c
 	golang.org/x/term v0.20.0
 	golang.org/x/tools v0.22.1-0.20240618181713-f2d2ebe43e72
 )

src/cmd/go.sum

@@ -16,8 +16,8 @@ golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
 golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/telemetry v0.0.0-20240621183135-b4de734908f6 h1:2+8QyQRLYDeEKd+CM/BsuaBaLdhAsNdasS/SnZfPS9g=
-golang.org/x/telemetry v0.0.0-20240621183135-b4de734908f6/go.mod h1:n38mvGdgc4dA684EC4NwQwoPKSw4jyKw8/DgZHDA1Dk=
+golang.org/x/telemetry v0.0.0-20240621194115-a740542b267c h1:zNxtD9mZQCgRwCNanVRlJ/XlOyATHcbR+09LzoArRl4=
+golang.org/x/telemetry v0.0.0-20240621194115-a740542b267c/go.mod h1:n38mvGdgc4dA684EC4NwQwoPKSw4jyKw8/DgZHDA1Dk=
 golang.org/x/term v0.20.0 h1:VnkxpohqXaOBYJtBmEppKUG6mXpi+4O6purfc2+sMhw=
 golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=

src/cmd/vendor/golang.org/x/telemetry/counter/counter.go

@@ -83,8 +83,6 @@ func NewStack(name string, depth int) *StackCounter {
 // If the telemetry mode is "off", Open is a no-op. Otherwise, it opens the
 // counter file on disk and starts to mmap telemetry counters to the file.
 // Open also persists any counters already created in the current process.
-//
-// Programs using telemetry should call either Open or OpenDir exactly once.
 func Open() {
 	counter.Open()
 }
@@ -95,8 +93,6 @@ func Open() {
 // If the telemetry mode is "off", Open is a no-op. Otherwise, it opens the
 // counter file on disk and starts to mmap telemetry counters to the file.
 // Open also persists any counters already created in the current process.
-//
-// Programs using telemetry should call either Open or OpenDir exactly once.
 func OpenDir(telemetryDir string) {
 	if telemetryDir != "" {
 		telemetry.Default = telemetry.NewDir(telemetryDir)

src/cmd/vendor/golang.org/x/telemetry/internal/counter/file.go

@@ -340,6 +340,8 @@ func (f *file) newCounter1(name string) (v *atomic.Uint64, cleanup func()) {
 	return v, cleanup
 }
 
+var openOnce sync.Once
+
 // Open associates counting with the defaultFile.
 // The returned function is for testing only, and should
 // be called after all Inc()s are finished, but before
@@ -349,22 +351,27 @@ func Open() func() {
 	if telemetry.DisabledOnPlatform {
 		return func() {}
 	}
-	if mode, _ := telemetry.Default.Mode(); mode == "off" {
-		// Don't open the file when telemetry is off.
-		defaultFile.err = ErrDisabled
-		return func() {} // No need to clean up.
-	}
-	debugPrintf("Open")
-	defaultFile.rotate()
-	return func() {
-		// Once this has been called, the defaultFile is no longer usable.
-		mf := defaultFile.current.Load()
-		if mf == nil {
-			// telemetry might have been off
+	close := func() {}
+	openOnce.Do(func() {
+		if mode, _ := telemetry.Default.Mode(); mode == "off" {
+			// Don't open the file when telemetry is off.
+			defaultFile.err = ErrDisabled
+			// No need to clean up.
 			return
 		}
-		mf.close()
-	}
+		debugPrintf("Open")
+		defaultFile.rotate()
+		close = func() {
+			// Once this has been called, the defaultFile is no longer usable.
+			mf := defaultFile.current.Load()
+			if mf == nil {
+				// telemetry might have been off
+				return
+			}
+			mf.close()
+		}
+	})
+	return close
 }
 
 // A mappedFile is a counter file mmapped into memory.

src/cmd/vendor/modules.txt

@@ -45,7 +45,7 @@ golang.org/x/sync/semaphore
 golang.org/x/sys/plan9
 golang.org/x/sys/unix
 golang.org/x/sys/windows
-# golang.org/x/telemetry v0.0.0-20240621183135-b4de734908f6
+# golang.org/x/telemetry v0.0.0-20240621194115-a740542b267c
 ## explicit; go 1.20
 golang.org/x/telemetry
 golang.org/x/telemetry/counter