1 files changed, 68 insertions, 0 deletions
diff --git a/infra/base-images/base-runner/gocoverage/pprof-merge/main.go b/infra/base-images/base-runner/gocoverage/pprof-merge/main.go
new file mode 100644
index 000000000..f35156403
--- /dev/null
+++ b/infra/base-images/base-runner/gocoverage/pprof-merge/main.go
@@ -0,0 +1,68 @@
+// Copyright 2019 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/google/pprof/profile"
+)
+
+var (
+	output string
+)
+
+func main() {
+	flag.StringVar(&output, "o", "merged.data", "")
+	flag.Parse()
+
+	files := os.Args[1:]
+	if len(files) == 0 {
+		log.Fatal("Give profiles files as arguments")
+	}
+
+	var profiles []*profile.Profile
+	for _, fname := range files {
+		f, err := os.Open(fname)
+		if err != nil {
+			log.Fatalf("Cannot open profile file at %q: %v", fname, err)
+		}
+		p, err := profile.Parse(f)
+		if err != nil {
+			log.Fatalf("Cannot parse profile at %q: %v", fname, err)
+		}
+		profiles = append(profiles, p)
+	}
+
+	merged, err := profile.Merge(profiles)
+	if err != nil {
+		log.Fatalf("Cannot merge profiles: %v", err)
+	}
+
+	out, err := os.OpenFile(output, os.O_RDWR|os.O_CREATE, 0755)
+	if err != nil {
+		log.Fatalf("Cannot open output to write: %v", err)
+	}
+
+	if err := merged.Write(out); err != nil {
+		log.Fatalf("Cannot write merged profile to file: %v", err)
+	}
+
+	if err := out.Close(); err != nil {
+		log.Printf("Error when closing the output file: %v", err)
+	}
+}