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📁 ..	-	2025-05-25 12:27
📄 beep.go // Copyright 2012 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. //go:build windows package main import ( "syscall" ) // BUG(brainman): MessageBeep Windows api is broken on Windows 7, // so this example does not beep when runs as service on Windows 7. var ( beepFunc = syscall.MustLoadDLL("user32.dll").MustFindProc("MessageBeep") ) func beep() { beepFunc.Call(0xffffffff) }	478 B	2025-05-25 12:27
📄 install.go // Copyright 2012 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. //go:build windows package main import ( "fmt" "os" "path/filepath" "golang.org/x/sys/windows/svc/eventlog" "golang.org/x/sys/windows/svc/mgr" ) func exePath() (string, error) { prog := os.Args[0] p, err := filepath.Abs(prog) if err != nil { return "", err } fi, err := os.Stat(p) if err == nil { if !fi.Mode().IsDir() { return p, nil } err = fmt.Errorf("%s is directory", p) } if filepath.Ext(p) == "" { p += ".exe" fi, err := os.Stat(p) if err == nil { if !fi.Mode().IsDir() { return p, nil } err = fmt.Errorf("%s is directory", p) } } return "", err } func installService(name, desc string) error { exepath, err := exePath() if err != nil { return err } m, err := mgr.Connect() if err != nil { return err } defer m.Disconnect() s, err := m.OpenService(name) if err == nil { s.Close() return fmt.Errorf("service %s already exists", name) } s, err = m.CreateService(name, exepath, mgr.Config{DisplayName: desc}, "is", "auto-started") if err != nil { return err } defer s.Close() err = eventlog.InstallAsEventCreate(name, eventlog.Error\|eventlog.Warning\|eventlog.Info) if err != nil { s.Delete() return fmt.Errorf("SetupEventLogSource() failed: %s", err) } return nil } func removeService(name string) error { m, err := mgr.Connect() if err != nil { return err } defer m.Disconnect() s, err := m.OpenService(name) if err != nil { return fmt.Errorf("service %s is not installed", name) } defer s.Close() err = s.Delete() if err != nil { return err } err = eventlog.Remove(name) if err != nil { return fmt.Errorf("RemoveEventLogSource() failed: %s", err) } return nil }	1.79 KB	2025-05-25 12:27
📄 main.go // Copyright 2012 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. //go:build windows // Example service program that beeps. // // The program demonstrates how to create Windows service and // install / remove it on a computer. It also shows how to // stop / start / pause / continue any service, and how to // write to event log. It also shows how to use debug // facilities available in debug package. package main import ( "flag" "fmt" "log" "os" "strings" "golang.org/x/sys/windows/svc" ) func usage(errmsg string) { fmt.Fprintf(os.Stderr, "%s\n\n"+ "usage: %s <command>\n"+ " where <command> is one of\n"+ " install, remove, debug, start, stop, pause or continue.\n", errmsg, os.Args[0]) os.Exit(2) } var svcName = "exampleservice" func main() { flag.StringVar(&svcName, "name", svcName, "name of the service") flag.Parse() inService, err := svc.IsWindowsService() if err != nil { log.Fatalf("failed to determine if we are running in service: %v", err) } if inService { runService(svcName, false) return } if len(os.Args) < 2 { usage("no command specified") } cmd := strings.ToLower(os.Args[1]) switch cmd { case "debug": runService(svcName, true) return case "install": err = installService(svcName, "example service") case "remove": err = removeService(svcName) case "start": err = startService(svcName) case "stop": err = controlService(svcName, svc.Stop, svc.Stopped) case "pause": err = controlService(svcName, svc.Pause, svc.Paused) case "continue": err = controlService(svcName, svc.Continue, svc.Running) default: usage(fmt.Sprintf("invalid command %s", cmd)) } if err != nil { log.Fatalf("failed to %s %s: %v", cmd, svcName, err) } return }	1.8 KB	2025-05-25 12:27
📄 manage.go // Copyright 2012 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. //go:build windows package main import ( "fmt" "time" "golang.org/x/sys/windows/svc" "golang.org/x/sys/windows/svc/mgr" ) func startService(name string) error { m, err := mgr.Connect() if err != nil { return err } defer m.Disconnect() s, err := m.OpenService(name) if err != nil { return fmt.Errorf("could not access service: %v", err) } defer s.Close() err = s.Start("is", "manual-started") if err != nil { return fmt.Errorf("could not start service: %v", err) } return nil } func controlService(name string, c svc.Cmd, to svc.State) error { m, err := mgr.Connect() if err != nil { return err } defer m.Disconnect() s, err := m.OpenService(name) if err != nil { return fmt.Errorf("could not access service: %v", err) } defer s.Close() status, err := s.Control(c) if err != nil { return fmt.Errorf("could not send control=%d: %v", c, err) } timeout := time.Now().Add(10 * time.Second) for status.State != to { if timeout.Before(time.Now()) { return fmt.Errorf("timeout waiting for service to go to state=%d", to) } time.Sleep(300 * time.Millisecond) status, err = s.Query() if err != nil { return fmt.Errorf("could not retrieve service status: %v", err) } } return nil }	1.36 KB	2025-05-25 12:27
📄 service.go // Copyright 2012 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. //go:build windows package main import ( "fmt" "strings" "time" "golang.org/x/sys/windows/svc" "golang.org/x/sys/windows/svc/debug" "golang.org/x/sys/windows/svc/eventlog" ) var elog debug.Log type exampleService struct{} func (m exampleService) Execute(args []string, r <-chan svc.ChangeRequest, changes chan<- svc.Status) (ssec bool, errno uint32) { const cmdsAccepted = svc.AcceptStop \| svc.AcceptShutdown \| svc.AcceptPauseAndContinue changes <- svc.Status{State: svc.StartPending} fasttick := time.Tick(500 time.Millisecond) slowtick := time.Tick(2 * time.Second) tick := fasttick changes <- svc.Status{State: svc.Running, Accepts: cmdsAccepted} loop: for { select { case <-tick: beep() elog.Info(1, "beep") case c := <-r: switch c.Cmd { case svc.Interrogate: changes <- c.CurrentStatus // Testing deadlock from https://code.google.com/p/winsvc/issues/detail?id=4 time.Sleep(100 * time.Millisecond) changes <- c.CurrentStatus case svc.Stop, svc.Shutdown: // golang.org/x/sys/windows/svc.TestExample is verifying this output. testOutput := strings.Join(args, "-") testOutput += fmt.Sprintf("-%d", c.Context) elog.Info(1, testOutput) break loop case svc.Pause: changes <- svc.Status{State: svc.Paused, Accepts: cmdsAccepted} tick = slowtick case svc.Continue: changes <- svc.Status{State: svc.Running, Accepts: cmdsAccepted} tick = fasttick default: elog.Error(1, fmt.Sprintf("unexpected control request #%d", c)) } } } changes <- svc.Status{State: svc.StopPending} return } func runService(name string, isDebug bool) { var err error if isDebug { elog = debug.New(name) } else { elog, err = eventlog.Open(name) if err != nil { return } } defer elog.Close() elog.Info(1, fmt.Sprintf("starting %s service", name)) run := svc.Run if isDebug { run = debug.Run } err = run(name, &exampleService{}) if err != nil { elog.Error(1, fmt.Sprintf("%s service failed: %v", name, err)) return } elog.Info(1, fmt.Sprintf("%s service stopped", name)) }	2.19 KB	2025-05-25 12:27

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