TUN-528: Move cloudflared into a separate repo

vendor/google.golang.org/grpc/benchmark/server/main.go

@@ -0,0 +1,90 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * 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"
+	"fmt"
+	"net"
+	_ "net/http/pprof"
+	"os"
+	"os/signal"
+	"runtime"
+	"runtime/pprof"
+	"syscall"
+	"time"
+
+	"golang.org/x/sys/unix"
+	"google.golang.org/grpc/benchmark"
+	"google.golang.org/grpc/grpclog"
+)
+
+var (
+	port     = flag.String("port", "50051", "Localhost port to listen on.")
+	testName = flag.String("test_name", "", "Name of the test used for creating profiles.")
+)
+
+func main() {
+	flag.Parse()
+	if *testName == "" {
+		grpclog.Fatalf("test name not set")
+	}
+	lis, err := net.Listen("tcp", ":"+*port)
+	if err != nil {
+		grpclog.Fatalf("Failed to listen: %v", err)
+	}
+	defer lis.Close()
+
+	cf, err := os.Create("/tmp/" + *testName + ".cpu")
+	if err != nil {
+		grpclog.Fatalf("Failed to create file: %v", err)
+	}
+	defer cf.Close()
+	pprof.StartCPUProfile(cf)
+	cpuBeg := getCPUTime()
+	// Launch server in a separate goroutine.
+	stop := benchmark.StartServer(benchmark.ServerInfo{Type: "protobuf", Listener: lis})
+	// Wait on OS terminate signal.
+	ch := make(chan os.Signal, 1)
+	signal.Notify(ch, syscall.SIGTERM)
+	<-ch
+	cpu := time.Duration(getCPUTime() - cpuBeg)
+	stop()
+	pprof.StopCPUProfile()
+	mf, err := os.Create("/tmp/" + *testName + ".mem")
+	if err != nil {
+		grpclog.Fatalf("Failed to create file: %v", err)
+	}
+	defer mf.Close()
+	runtime.GC() // materialize all statistics
+	if err := pprof.WriteHeapProfile(mf); err != nil {
+		grpclog.Fatalf("Failed to write memory profile: %v", err)
+	}
+	fmt.Println("Server CPU utilization:", cpu)
+	fmt.Println("Server CPU profile:", cf.Name())
+	fmt.Println("Server Mem Profile:", mf.Name())
+}
+
+func getCPUTime() int64 {
+	var ts unix.Timespec
+	if err := unix.ClockGettime(unix.CLOCK_PROCESS_CPUTIME_ID, &ts); err != nil {
+		grpclog.Fatal(err)
+	}
+	return ts.Nano()
+}