mirror of https://github.com/icsharpcode/ILSpy.git
Christoph Wille
3 years ago
committed by
GitHub
3 changed files with 158 additions and 121 deletions
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// Copyright (c) 2022 AlphaSierraPapa for the SharpDevelop Team
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System; |
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using System.Collections.Generic; |
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using System.Diagnostics; |
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using System.IO; |
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using System.Linq; |
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using System.Threading; |
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namespace ICSharpCode.ILSpy |
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{ |
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internal static class SingleInstanceHandling |
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{ |
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internal static Mutex SingleInstanceMutex; |
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internal static void ForceSingleInstance(IEnumerable<string> cmdArgs) |
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{ |
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bool isFirst; |
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try |
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{ |
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SingleInstanceMutex = new Mutex(initiallyOwned: true, @"Local\ILSpyInstance", out isFirst); |
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} |
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catch (WaitHandleCannotBeOpenedException) |
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{ |
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isFirst = true; |
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} |
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if (!isFirst) |
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{ |
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try |
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{ |
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SingleInstanceMutex.WaitOne(10000); |
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} |
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catch (AbandonedMutexException) |
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{ |
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// continue, there is no concurrent start happening.
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} |
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} |
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cmdArgs = cmdArgs.Select(FullyQualifyPath); |
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string message = string.Join(Environment.NewLine, cmdArgs); |
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if (SendToPreviousInstance("ILSpy:\r\n" + message, !App.CommandLineArguments.NoActivate)) |
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{ |
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ReleaseSingleInstanceMutex(); |
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Environment.Exit(0); |
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} |
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} |
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internal static string FullyQualifyPath(string argument) |
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{ |
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// Fully qualify the paths before passing them to another process,
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// because that process might use a different current directory.
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if (string.IsNullOrEmpty(argument) || argument[0] == '/') |
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return argument; |
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try |
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{ |
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return Path.Combine(Environment.CurrentDirectory, argument); |
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} |
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catch (ArgumentException) |
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{ |
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return argument; |
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} |
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} |
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internal static void ReleaseSingleInstanceMutex() |
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{ |
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var mutex = SingleInstanceMutex; |
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SingleInstanceMutex = null; |
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if (mutex == null) |
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{ |
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return; |
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} |
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using (mutex) |
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{ |
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mutex.ReleaseMutex(); |
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} |
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} |
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#region Pass Command Line Arguments to previous instance
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internal static bool SendToPreviousInstance(string message, bool activate) |
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{ |
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string ownProcessName; |
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using (var ownProcess = Process.GetCurrentProcess()) |
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{ |
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ownProcessName = ownProcess.ProcessName; |
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} |
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bool success = false; |
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NativeMethods.EnumWindows( |
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(hWnd, lParam) => { |
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string windowTitle = NativeMethods.GetWindowText(hWnd, 100); |
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if (windowTitle.StartsWith("ILSpy", StringComparison.Ordinal)) |
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{ |
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string processName = NativeMethods.GetProcessNameFromWindow(hWnd); |
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Debug.WriteLine("Found {0:x4}: '{1}' in '{2}'", hWnd, windowTitle, processName); |
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if (string.Equals(processName, ownProcessName, StringComparison.OrdinalIgnoreCase)) |
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{ |
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IntPtr result = Send(hWnd, message); |
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Debug.WriteLine("WM_COPYDATA result: {0:x8}", result); |
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if (result == (IntPtr)1) |
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{ |
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if (activate) |
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NativeMethods.SetForegroundWindow(hWnd); |
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success = true; |
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return false; // stop enumeration
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} |
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} |
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} |
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return true; // continue enumeration
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}, IntPtr.Zero); |
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return success; |
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} |
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unsafe static IntPtr Send(IntPtr hWnd, string message) |
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{ |
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const uint SMTO_NORMAL = 0; |
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CopyDataStruct lParam; |
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lParam.Padding = IntPtr.Zero; |
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lParam.Size = message.Length * 2; |
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fixed (char* buffer = message) |
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{ |
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lParam.Buffer = (IntPtr)buffer; |
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IntPtr result; |
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// SendMessage with 3s timeout (e.g. when the target process is stopped in the debugger)
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if (NativeMethods.SendMessageTimeout( |
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hWnd, NativeMethods.WM_COPYDATA, IntPtr.Zero, ref lParam, |
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SMTO_NORMAL, 3000, out result) != IntPtr.Zero) |
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{ |
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return result; |
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} |
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else |
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{ |
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return IntPtr.Zero; |
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} |
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} |
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} |
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#endregion
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} |
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} |
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