Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/runtime/pprof/pe.go b/src/runtime/pprof/pe.go
new file mode 100644
index 0000000..4105458
--- /dev/null
+++ b/src/runtime/pprof/pe.go
@@ -0,0 +1,19 @@
+// Copyright 2022 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.
+
+package pprof
+
+import "os"
+
+// peBuildID returns a best effort unique ID for the named executable.
+//
+// It would be wasteful to calculate the hash of the whole file,
+// instead use the binary name and the last modified time for the buildid.
+func peBuildID(file string) string {
+	s, err := os.Stat(file)
+	if err != nil {
+		return file
+	}
+	return file + s.ModTime().String()
+}