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Common(-Tests): implemented SingleApplicationInstance
This implementation covers MS .NET on Windows, Mono with SHM on Unix, Mono without SHM on Unix. It uses named mutex + Remoting or file mutex + Remoting depending on what is supported by the operating system and CLI runtime. * MS .NET on Windows -> named mutex * Mono on Windows -> named mutex * Mono with SHM on Linux -> named mutex * Mono without SHM on Linux -> file lock For file mutex support you need to compile this class with -define:MONO_UNIX and -r:Mono.Posix.dll otherwise it will throw a NotSupportedException when named mutex is not available.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,127 @@ | ||
| // Smuxi - Smart MUltipleXed Irc | ||
| // | ||
| // Copyright (c) 2015 Mirco Bauer <meebey@meebey.net> | ||
| // | ||
| // Full GPL License: <http://www.gnu.org/licenses/gpl.txt> | ||
| // | ||
| // This program is free software; you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation; either version 2 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with this program; if not, write to the Free Software | ||
| // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| using System; | ||
| using NUnit.Framework; | ||
| using System.Runtime.Remoting; | ||
| using System.Runtime.Remoting.Channels; | ||
| using System.Threading; | ||
| using System.IO; | ||
|
|
||
| namespace Smuxi.Common | ||
| { | ||
| [TestFixture] | ||
| public class SingleApplicationInstanceTests | ||
| { | ||
| SingleApplicationInstance<TestApplication> FirstInstance { get; set; } | ||
|
|
||
| class TestApplication : MarshalByRefObject | ||
| { | ||
| public int InvokeCounter { get; private set; } | ||
|
|
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| public void Invoke() | ||
| { | ||
| InvokeCounter++; | ||
| } | ||
|
|
||
| public override object InitializeLifetimeService() | ||
| { | ||
| // I want to live forever | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| [SetUp] | ||
| public void SetUp() | ||
| { | ||
| FirstInstance = new SingleApplicationInstance<TestApplication>("test"); | ||
| } | ||
|
|
||
| [TearDown] | ||
| public void TearDown() | ||
| { | ||
| if (FirstInstance != null) { | ||
| FirstInstance.Dispose(); | ||
| } | ||
| try { | ||
| var mutex = Mutex.OpenExisting("test"); | ||
| Assert.Fail(); | ||
| } catch (WaitHandleCannotBeOpenedException) { | ||
| } | ||
| } | ||
|
|
||
| [Test] | ||
| public void IsFirstInstance() | ||
| { | ||
| var instance1 = FirstInstance; | ||
| Assert.IsTrue(instance1.IsFirstInstance); | ||
|
|
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| using (var instance2 = new SingleApplicationInstance<TestApplication>("test")) { | ||
| Assert.IsFalse(instance2.IsFirstInstance); | ||
| } | ||
| } | ||
|
|
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| [Test] | ||
| public void Dispose() | ||
| { | ||
| FirstInstance.Dispose(); | ||
| FirstInstance = null; | ||
|
|
||
| try { | ||
| var mutex = Mutex.OpenExisting("test"); | ||
| Assert.Fail(); | ||
| } catch (WaitHandleCannotBeOpenedException) { | ||
| } | ||
| Assert.IsNull(ChannelServices.GetChannel("ipc")); | ||
|
|
||
| var appData = Environment.GetFolderPath( | ||
| Environment.SpecialFolder.LocalApplicationData | ||
| ); | ||
| var lockDirectory = Path.Combine(appData, "SingleApplicationInstance"); | ||
| var lockFile = Path.Combine(lockDirectory, "test"); | ||
| //Assert.IsFalse(File.Exists(lockFile)); | ||
|
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| FirstInstance = new SingleApplicationInstance<TestApplication>("test"); | ||
| Assert.IsTrue(FirstInstance.IsFirstInstance); | ||
| //Assert.IsTrue(File.Exists(lockFile)); | ||
| } | ||
|
|
||
| [Test] | ||
| public void Invoke() | ||
| { | ||
| var instance1 = FirstInstance; | ||
| Assert.IsTrue(instance1.IsFirstInstance); | ||
|
|
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| instance1.FirstInstance = new TestApplication(); | ||
| Assert.IsNotNull(instance1.FirstInstance); | ||
| Assert.AreEqual(0, instance1.FirstInstance.InvokeCounter); | ||
| instance1.FirstInstance.Invoke(); | ||
| Assert.AreEqual(1, instance1.FirstInstance.InvokeCounter); | ||
|
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| using (var instance2 = new SingleApplicationInstance<TestApplication>("test")) { | ||
| Assert.IsFalse(instance2.IsFirstInstance); | ||
|
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| Assert.IsNotNull(instance2.FirstInstance); | ||
| Assert.AreEqual(1, instance2.FirstInstance.InvokeCounter); | ||
| instance2.FirstInstance.Invoke(); | ||
| Assert.AreEqual(2, instance2.FirstInstance.InvokeCounter); | ||
| } | ||
| } | ||
| } | ||
| } |
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