C# AccessControl.MutexAccessRule类代码示例

        public UIMutex(string mutexName)
        {
            pGlobalMutexName = mutexName;

            // Create a string representing the current user.
            string userName = Environment.UserDomainName + "\\" + Environment.UserName;

            // Create a security object that grants no access.
            MutexSecurity mutexSecurity = new MutexSecurity();

            // Add a rule that grants the current user the right
            // to enter or release the mutex.
            MutexAccessRule mutexAccessRule = new MutexAccessRule(userName, MutexRights.FullControl, AccessControlType.Allow);
            mutexSecurity.AddAccessRule(mutexAccessRule);

            bool createdNew = false;
            pMutex = new Mutex(false, pGlobalMutexName, out createdNew, mutexSecurity);

            if (createdNew)
            {
                // loggingSystem.LogVerbose("New Mutex created {0}", pGlobalMutexName);
            }
            else
            {
                //loggingSystem.LogVerbose("Existing Mutex opened {0}", globalMutextName);
            }

        }

        public static Mutex GrabMutex(string name)
        {
            var mutexName = "kalixLuceneSegmentMutex_" + name;
            try
            {
                return Mutex.OpenExisting(mutexName);
            }
            catch (WaitHandleCannotBeOpenedException)
            {
                var worldSid = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
                var security = new MutexSecurity();
                var rule = new MutexAccessRule(worldSid, MutexRights.FullControl, AccessControlType.Allow);
                security.AddAccessRule(rule);
                var mutexIsNew = false;
                return new Mutex(false, mutexName, out mutexIsNew, security);
            }
            catch (UnauthorizedAccessException)
            {
                var m = Mutex.OpenExisting(mutexName, MutexRights.ReadPermissions | MutexRights.ChangePermissions);
                var security = m.GetAccessControl();
                var user = Environment.UserDomainName + "\\" + Environment.UserName;
                var rule = new MutexAccessRule(user, MutexRights.Synchronize | MutexRights.Modify, AccessControlType.Allow);
                security.AddAccessRule(rule);
                m.SetAccessControl(security);

                return Mutex.OpenExisting(mutexName);
            }
        }

        public InterProcessMutexLock(String mutexName)
        {
            try
            {
                _mutexName = mutexName;

                try
                {
                    _currentMutex = Mutex.OpenExisting(_mutexName);
                }
                catch (WaitHandleCannotBeOpenedException)
                {
                    // grant everyone access to the mutex
                    var security = new MutexSecurity();
                    var everyoneIdentity = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
                    var rule = new MutexAccessRule(everyoneIdentity, MutexRights.FullControl, AccessControlType.Allow);
                    security.AddAccessRule(rule);

                    // make sure to not initially own it, because if you do it also acquires the lock
                    // we want to explicitly attempt to acquire the lock ourselves so we know how many times
                    // this object acquired and released the lock
                    _currentMutex = new Mutex(false, mutexName, out _created, security);
                }

                AquireMutex();
            }
            catch(Exception ex)
            {
                var exceptionString = String.Format("Exception in InterProcessMutexLock, mutex name {0}", mutexName);
                Log.Error(this, exceptionString, ex);
                throw ExceptionUtil.Rethrow(ex, exceptionString);
            }
        }

        // Note: configuration based on stackoverflow answer: http://stackoverflow.com/questions/229565/what-is-a-good-pattern-for-using-a-global-mutex-in-c
        public BankAccountMutex(double money)
        {
            // get application GUID as defined in AssemblyInfo.cs
            string appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value.ToString();

            // unique id for global mutex - Global prefix means it is global to the machine
            string mutexId = string.Format("Global\\{{{0}}}", appGuid);

            // Need a place to store a return value in Mutex() constructor call
            bool createdNew;

            // set up security for multi-user usage
            // work also on localized systems (don't use just "Everyone")
            var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
            var securitySettings = new MutexSecurity();
            securitySettings.AddAccessRule(allowEveryoneRule);

            mutex = new Mutex(false, mutexId, out createdNew, securitySettings);

            LogConsole("Setting initial amount of money: " + money);

            if (money < 0)
            {
                LogConsole("The entered money quantity cannot be negative. Money: " + money);
                throw new ArgumentException(GetMessageWithTreadId("The entered money quantity cannot be negative. Money: " + money));
            }

            this.bankMoney = money;
        }

        protected override void OnStartup(StartupEventArgs e)
        {
            // store mutex result
            bool createdNew;

            // allow multiple users to run it, but only one per user
            var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
            var securitySettings = new MutexSecurity();
            securitySettings.AddAccessRule(allowEveryoneRule);

            // create mutex
            _instanceMutex = new Mutex(true, @"Global\MercurialForge_Mastery", out createdNew, securitySettings);

            // check if conflict
            if (!createdNew)
            {
                MessageBox.Show("Instance of Mastery is already running");
                _instanceMutex = null;
                Application.Current.Shutdown();
                return;
            }

            base.OnStartup(e);
            MainWindow window = new MainWindow();
            MainWindowViewModel viewModel = new MainWindowViewModel(window);
            window.DataContext = viewModel;
            window.Show();
        }

        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(true);

            string title = "KeyMagic";

            bool beta = Properties.Settings.Default.BetaRelease;

            if (beta) title += " (beta)";

            string mutexName = "\u1000\u1001";

            // http://stackoverflow.com/questions/229565/what-is-a-good-pattern-for-using-a-global-mutex-in-c/229567
            using (var mutex = new Mutex(false, mutexName))
            {
                // edited by Jeremy Wiebe to add example of setting up security for multi-user usage
                // edited by 'Marc' to work also on localized systems (don't use just "Everyone")
                var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
                var securitySettings = new MutexSecurity();
                securitySettings.AddAccessRule(allowEveryoneRule);
                mutex.SetAccessControl(securitySettings);

                //edited by acidzombie24
                var hasHandle = false;
                try
                {
                    try
                    {
                        // note, you may want to time out here instead of waiting forever
                        //edited by acidzombie24
                        //mutex.WaitOne(Timeout.Infinite, false);
                        hasHandle = mutex.WaitOne(100, false);
                        if (hasHandle == false) //another instance exist
                        {
                            IntPtr pWnd = NativeMethods.FindWindow(null, title);
                            if (pWnd != IntPtr.Zero)
                            {
                                NativeMethods.ShowWindow(pWnd, 0x05);
                            }
                            return;
                        }
                    }
                    catch (AbandonedMutexException)
                    {
                        // Log the fact the mutex was abandoned in another process, it will still get aquired
                    }

                    frmMain f = new frmMain();
                    Application.Run();
                }
                finally
                {
                    //edit by acidzombie24, added if statemnet
                    if (hasHandle)
                        mutex.ReleaseMutex();
                }
            }
        }

 public static Mutex CreateMutexWithFullControlRights(String name, out Boolean createdNew)
 {
     SecurityIdentifier securityIdentifier = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
     MutexSecurity mutexSecurity = new MutexSecurity();
     MutexAccessRule rule = new MutexAccessRule(securityIdentifier, MutexRights.FullControl, AccessControlType.Allow);
     mutexSecurity.AddAccessRule(rule);
     return new Mutex(false, name, out createdNew, mutexSecurity);
 }

        public static MutexSecurity MutexSecurity()
            {
            SecurityIdentifier user = GetEveryoneSID();
            MutexSecurity result = new MutexSecurity();

            MutexAccessRule rule = new MutexAccessRule(user, MutexRights.Synchronize | MutexRights.Modify | MutexRights.Delete, AccessControlType.Allow);
            result.AddAccessRule(rule);

            return result;
            }

 // Methods
 public MutexHelper(string mutexName)
 {
     bool flag;
     this.pGlobalMutexName = mutexName;
     string identity = Environment.UserDomainName + @"\" + Environment.UserName;
     MutexSecurity mutexSecurity = new MutexSecurity();
     MutexAccessRule rule = new MutexAccessRule(identity, MutexRights.FullControl, AccessControlType.Allow);
     mutexSecurity.AddAccessRule(rule);
     this.pMutex = new Mutex(false, this.pGlobalMutexName, out flag, mutexSecurity);
 }

        private void InitMutex(Guid appGuid)
        {
            var mutexId = string.Format("Global\\{{{0}}}", appGuid);
            _mutex = new Mutex(false, mutexId);

            var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
            var securitySettings = new MutexSecurity();
            securitySettings.AddAccessRule(allowEveryoneRule);
            _mutex.SetAccessControl(securitySettings);
        }

        private void InitMutex()
        {
            var appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value;
            var mutexId = string.Format("Global\\{{{0}}}", appGuid);
            _mutex = new Mutex(false, mutexId);

            var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
            var securitySettings = new MutexSecurity();
            securitySettings.AddAccessRule(allowEveryoneRule);
            _mutex.SetAccessControl(securitySettings);
        }

 private static Mutex BuildMutex(string name)
 {
     name = name.Replace(":", "_");
     name = name.Replace("/", "_");
     name = name.Replace("\\", "_");
     string mutexId = string.Format("Global\\{0}", name);
     var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
     var securitySettings = new MutexSecurity();
     securitySettings.AddAccessRule(allowEveryoneRule);
     bool createdNew;
     var mutex = new Mutex(false, mutexId, out createdNew, securitySettings);
     return mutex;
 }

        private void InitWaitHandle() {
            string mutexId = String.Format("Global\\{{{0}}}", _key);

            try {
                var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
                var securitySettings = new MutexSecurity();
                securitySettings.AddAccessRule(allowEveryoneRule);

                bool wasCreated = false;
                _waitHandle = new Mutex(false, mutexId, out wasCreated, securitySettings);
            } catch (Exception) {
                // We fallback to AutoResetEvent because Mutex isn't supported in medium trust.
                _waitHandle = _namedLocks.GetOrAdd(_key, key => new AutoResetEvent(true));
            }
        }

        /// <summary>
        /// Creates a global mutex and allows everyone access to it.
        /// </summary>
        /// <param name="name">The name of the mutex to create in the Global namespace.</param>
        public GlobalMutex(string name)
        {
            // Allow full control of the mutex for everyone so that other users will be able to
            // create the same mutex and synchronise on it, if required.
            var allowEveryoneRule = new MutexAccessRule(
                new SecurityIdentifier(WellKnownSidType.WorldSid, null),
                MutexRights.FullControl,
                AccessControlType.Allow);
            var securitySettings = new MutexSecurity();
            securitySettings.AddAccessRule(allowEveryoneRule);

            bool createdNew;
            // Use the Global prefix to make it a system-wide object
            mutex = new Mutex(false, @"Global\" + name, out createdNew, securitySettings);
        }

        public static bool TryGetMutex()
        {
            //source: http://stackoverflow.com/questions/229565/what-is-a-good-pattern-for-using-a-global-mutex-in-c

            // get application GUID as defined in AssemblyInfo.cs
            //string appGuid = "SjUpdater\\v" +Assembly.GetExecutingAssembly().GetName().Version.Major;
            string appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value.ToString();

            // unique id for global mutex - Global prefix means it is global to the machine
            string mutexId = string.Format("Global\\{{{0}}}", appGuid);

            mutex = new Mutex(false, mutexId);

            // edited by Jeremy Wiebe to add example of setting up security for multi-user usage
            // edited by 'Marc' to work also on localized systems (don't use just "Everyone")
            var allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null),
                MutexRights.FullControl, AccessControlType.Allow);
            var securitySettings = new MutexSecurity();
            securitySettings.AddAccessRule(allowEveryoneRule);
            mutex.SetAccessControl(securitySettings);

            // edited by acidzombie24
            try
            {
                try
                {
                    // note, you may want to time out here instead of waiting forever
                    // edited by acidzombie24
                    // mutex.WaitOne(Timeout.Infinite, false);
                    hasHandle = mutex.WaitOne(5000, false);
                    if (hasHandle == false)
                        throw new TimeoutException("Timeout waiting for exclusive access");
                }
                catch (AbandonedMutexException)
                {
                    // Log the fact the mutex was abandoned in another process, it will still get aquired
                    hasHandle = true;
                }

                return true;
            }
            catch
            {
                return false;
            }
        }