Golang utils.GetTotalUsedFds函數代碼示例

func (srv *Server) DockerInfo() *APIInfo {
	images, _ := srv.runtime.graph.Map()
	var imgcount int
	if images == nil {
		imgcount = 0
	} else {
		imgcount = len(images)
	}
	lxcVersion := ""
	if output, err := exec.Command("lxc-version").CombinedOutput(); err == nil {
		outputStr := string(output)
		if len(strings.SplitN(outputStr, ":", 2)) == 2 {
			lxcVersion = strings.TrimSpace(strings.SplitN(string(output), ":", 2)[1])
		}
	}
	kernelVersion := "<unknown>"
	if kv, err := utils.GetKernelVersion(); err == nil {
		kernelVersion = kv.String()
	}

	return &APIInfo{
		Containers:         len(srv.runtime.List()),
		Images:             imgcount,
		MemoryLimit:        srv.runtime.capabilities.MemoryLimit,
		SwapLimit:          srv.runtime.capabilities.SwapLimit,
		IPv4Forwarding:     !srv.runtime.capabilities.IPv4ForwardingDisabled,
		Debug:              os.Getenv("DEBUG") != "",
		NFd:                utils.GetTotalUsedFds(),
		NGoroutines:        runtime.NumGoroutine(),
		LXCVersion:         lxcVersion,
		NEventsListener:    len(srv.events),
		KernelVersion:      kernelVersion,
		IndexServerAddress: auth.IndexServerAddress(),
	}
}

func init() {
	os.Setenv("TEST", "1")

	// Hack to run sys init during unit testing
	if selfPath := utils.SelfPath(); selfPath == "/sbin/init" || selfPath == "/.dockerinit" {
		SysInit()
		return
	}

	if uid := syscall.Geteuid(); uid != 0 {
		log.Fatal("docker tests need to be run as root")
	}

	NetworkBridgeIface = unitTestNetworkBridge

	// Make it our Store root
	if runtime, err := NewRuntimeFromDirectory(unitTestStoreBase, false); err != nil {
		log.Fatalf("Unable to create a runtime for tests:", err)
	} else {
		globalRuntime = runtime
	}

	// Cleanup any leftover container
	for _, container := range globalRuntime.List() {
		if err := globalRuntime.Destroy(container); err != nil {
			log.Fatalf("Error destroying leftover container: %s", err)
		}
	}

	// Create the "Server"
	srv := &Server{
		runtime:     globalRuntime,
		enableCors:  false,
		pullingPool: make(map[string]struct{}),
		pushingPool: make(map[string]struct{}),
	}
	// If the unit test is not found, try to download it.
	if img, err := globalRuntime.repositories.LookupImage(unitTestImageName); err != nil || img.ID != unitTestImageID {
		// Retrieve the Image
		if err := srv.ImagePull(unitTestImageName, "", os.Stdout, utils.NewStreamFormatter(false), nil, nil, true); err != nil {
			log.Fatalf("Unable to pull the test image:", err)
		}
	}
	// Spawn a Daemon
	go func() {
		if err := ListenAndServe(testDaemonProto, testDaemonAddr, srv, os.Getenv("DEBUG") != ""); err != nil {
			log.Fatalf("Unable to spawn the test daemon:", err)
		}
	}()

	// Give some time to ListenAndServer to actually start
	time.Sleep(time.Second)

	startFds, startGoroutines = utils.GetTotalUsedFds(), runtime.NumGoroutine()
}

func init() {
	// Always use the same driver (vfs) for all integration tests.
	// To test other drivers, we need a dedicated driver validation suite.
	os.Setenv("DOCKER_DRIVER", "vfs")
	os.Setenv("TEST", "1")

	// Hack to run sys init during unit testing
	if selfPath := utils.SelfPath(); strings.Contains(selfPath, ".dockerinit") {
		sysinit.SysInit()
		return
	}

	if uid := syscall.Geteuid(); uid != 0 {
		log.Fatal("docker tests need to be run as root")
	}

	// Copy dockerinit into our current testing directory, if provided (so we can test a separate dockerinit binary)
	if dockerinit := os.Getenv("TEST_DOCKERINIT_PATH"); dockerinit != "" {
		src, err := os.Open(dockerinit)
		if err != nil {
			log.Fatalf("Unable to open TEST_DOCKERINIT_PATH: %s\n", err)
		}
		defer src.Close()
		dst, err := os.OpenFile(filepath.Join(filepath.Dir(utils.SelfPath()), "dockerinit"), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0555)
		if err != nil {
			log.Fatalf("Unable to create dockerinit in test directory: %s\n", err)
		}
		defer dst.Close()
		if _, err := io.Copy(dst, src); err != nil {
			log.Fatalf("Unable to copy dockerinit to TEST_DOCKERINIT_PATH: %s\n", err)
		}
		dst.Close()
		src.Close()
	}

	// Setup the base daemon, which will be duplicated for each test.
	// (no tests are run directly in the base)
	setupBaseImage()

	// Create the "global daemon" with a long-running daemons for integration tests
	spawnGlobalDaemon()
	spawnLegitHttpsDaemon()
	spawnRogueHttpsDaemon()
	startFds, startGoroutines = utils.GetTotalUsedFds(), runtime.NumGoroutine()
}

func (srv *Server) DockerInfo() *APIInfo {
	images, _ := srv.runtime.graph.All()
	var imgcount int
	if images == nil {
		imgcount = 0
	} else {
		imgcount = len(images)
	}
	return &APIInfo{
		Containers:  len(srv.runtime.List()),
		Images:      imgcount,
		MemoryLimit: srv.runtime.capabilities.MemoryLimit,
		SwapLimit:   srv.runtime.capabilities.SwapLimit,
		Debug:       os.Getenv("DEBUG") != "",
		NFd:         utils.GetTotalUsedFds(),
		NGoroutines: runtime.NumGoroutine(),
	}
}

func (srv *Server) DockerInfo() ApiInfo {
	images, _ := srv.runtime.graph.All()
	var imgcount int
	if images == nil {
		imgcount = 0
	} else {
		imgcount = len(images)
	}
	var out ApiInfo
	out.Containers = len(srv.runtime.List())
	out.Version = VERSION
	out.Images = imgcount
	out.GoVersion = runtime.Version()
	if os.Getenv("DEBUG") != "" {
		out.Debug = true
		out.NFd = utils.GetTotalUsedFds()
		out.NGoroutines = runtime.NumGoroutine()
	}
	return out
}

func init() {
	os.Setenv("TEST", "1")

	// Hack to run sys init during unit testing
	if selfPath := utils.SelfPath(); selfPath == "/sbin/init" || selfPath == "/.dockerinit" {
		sysinit.SysInit()
		return
	}

	if uid := syscall.Geteuid(); uid != 0 {
		log.Fatal("docker tests need to be run as root")
	}

	// Copy dockerinit into our current testing directory, if provided (so we can test a separate dockerinit binary)
	if dockerinit := os.Getenv("TEST_DOCKERINIT_PATH"); dockerinit != "" {
		src, err := os.Open(dockerinit)
		if err != nil {
			log.Fatalf("Unable to open TEST_DOCKERINIT_PATH: %s\n", err)
		}
		defer src.Close()
		dst, err := os.OpenFile(filepath.Join(filepath.Dir(utils.SelfPath()), "dockerinit"), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0555)
		if err != nil {
			log.Fatalf("Unable to create dockerinit in test directory: %s\n", err)
		}
		defer dst.Close()
		if _, err := io.Copy(dst, src); err != nil {
			log.Fatalf("Unable to copy dockerinit to TEST_DOCKERINIT_PATH: %s\n", err)
		}
		dst.Close()
		src.Close()
	}

	// Setup the base runtime, which will be duplicated for each test.
	// (no tests are run directly in the base)
	setupBaseImage()

	// Create the "global runtime" with a long-running daemon for integration tests
	spawnGlobalDaemon()
	startFds, startGoroutines = utils.GetTotalUsedFds(), runtime.NumGoroutine()
}

func init() {
	os.Setenv("TEST", "1")

	// Hack to run sys init during unit testing
	if selfPath := utils.SelfPath(); selfPath == "/sbin/init" || selfPath == "/.dockerinit" {
		SysInit()
		return
	}

	if uid := syscall.Geteuid(); uid != 0 {
		log.Fatal("docker tests need to be run as root")
	}

	NetworkBridgeIface = unitTestNetworkBridge

	// Setup the base runtime, which will be duplicated for each test.
	// (no tests are run directly in the base)
	setupBaseImage()

	// Create the "global runtime" with a long-running daemon for integration tests
	spawnGlobalDaemon()
	startFds, startGoroutines = utils.GetTotalUsedFds(), runtime.NumGoroutine()
}

func TestFinal(t *testing.T) {
	cleanup(globalRuntime)
	t.Logf("Fds: %d, Goroutines: %d", utils.GetTotalUsedFds(), runtime.NumGoroutine())
}

func displayFdGoroutines(t *testing.T) {
	t.Logf("Fds: %d, Goroutines: %d", utils.GetTotalUsedFds(), runtime.NumGoroutine())
}