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osu-lazer/osu.Desktop/Program.cs

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// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.IO;
using System.Linq;
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using System.Threading;
using System.Threading.Tasks;
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using osu.Framework;
using osu.Framework.Development;
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using osu.Framework.Logging;
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using osu.Framework.Platform;
using osu.Game.IPC;
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namespace osu.Desktop
{
public static class Program
{
[STAThread]
public static int Main(string[] args)
{
// Back up the cwd before DesktopGameHost changes it
var cwd = Environment.CurrentDirectory;
using (DesktopGameHost host = Host.GetSuitableHost(@"osu", true))
{
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host.ExceptionThrown += handleException;
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if (!host.IsPrimaryInstance)
{
var importer = new ArchiveImportIPCChannel(host);
// Restore the cwd so relative paths given at the command line work correctly
Directory.SetCurrentDirectory(cwd);
foreach (var file in args)
{
Console.WriteLine(@"Importing {0}", file);
if (!importer.ImportAsync(Path.GetFullPath(file)).Wait(3000))
throw new TimeoutException(@"IPC took too long to send");
}
}
else
{
switch (args.FirstOrDefault() ?? string.Empty)
{
default:
host.Run(new OsuGameDesktop(args));
break;
}
}
return 0;
}
}
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private static int allowableExceptions = DebugUtils.IsDebugBuild ? 0 : 1;
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/// <summary>
/// Allow a maximum of one unhandled exception, per second of execution.
/// </summary>
/// <param name="arg"></param>
/// <returns></returns>
private static bool handleException(Exception arg)
{
bool continueExecution = Interlocked.Decrement(ref allowableExceptions) >= 0;
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Logger.Log($"Unhandled exception has been {(continueExecution ? $"allowed with {allowableExceptions} more allowable exceptions" : "denied")} .");
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// restore the stock of allowable exceptions after a short delay.
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Task.Delay(1000).ContinueWith(_ => Interlocked.Increment(ref allowableExceptions));
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return continueExecution;
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}
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}
}