24940020806

Committed 25 Apr 2026 08:30PM UTC coverage: 28.251% (-1.5%) from 29.75%

Build # 24940020806

Build Type

push

coveralls.net

Committed by

DemoBytom

Commit Message

Remove old `StaThreadService` and related codebase

Superseeded by `WindowsMessagePump`

Coverage Stats

1208 of 4276 relevant lines covered (28.25%)

0.32 hits per line

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83.33

/src/Demo.Engine.Core/Services/MainLoopService.cs

// Copyright © Michał Dembski and contributors.
// Distributed under MIT license. See LICENSE file in the root for more information.

using System.Diagnostics;
using Demo.Engine.Core.Features.StaThread;
using Demo.Engine.Core.Interfaces;
using Demo.Engine.Core.Interfaces.Rendering;
using Demo.Engine.Core.Requests.Keyboard;
using Demo.Engine.Core.ValueObjects;
using Mediator;
using Microsoft.Extensions.Logging;

namespace Demo.Engine.Core.Services;

internal sealed class MainLoopService
    : IMainLoopService,
      IAsyncDisposable
{
    private readonly ILogger<MainLoopService> _logger;
    private readonly IStaThreadWriter _staThreadWriter;
    private readonly IMediator _mediator;
    private readonly IFpsTimer _fpsTimer;
    private readonly IMainLoopLifetime _mainLoopLifetime;
    private readonly ILoopJob _loopJob;
    private bool _disposedValue;

    public Task ExecutingTask { get; }

    public MainLoopService(
        ILogger<MainLoopService> logger,
        IStaThreadWriter staThreadWriter,
        IMediator mediator,
        IFpsTimer fpsTimer,
        IRenderingEngine renderingEngine,
        IMainLoopLifetime mainLoopLifetime,
        ILoopJob loopJob)
    {
        _logger = logger;
        _staThreadWriter = staThreadWriter;
        _mediator = mediator;
        _fpsTimer = fpsTimer;
        _mainLoopLifetime = mainLoopLifetime;
        _loopJob = loopJob;
        ExecutingTask = Task.Run(async () =>
        {
            try
            {
                await DoAsync(renderingEngine);
            }
            catch (TaskCanceledException)
            {
                _mainLoopLifetime.Cancel();
            }
            catch (Exception ex)
            {
                _logger.LogMainLoopFailedWithError(ex);
                _mainLoopLifetime.Cancel();
                //throw;
            }
        });
    }

    private async Task DoAsync(
        IRenderingEngine renderingEngine)
    {
        var keyboardHandle = await _mediator.Send(new KeyboardHandleRequest(), CancellationToken.None);
        var keyboardCharCache = await _mediator.Send(new KeyboardCharCacheRequest(), CancellationToken.None);

        var surfaces = new List<RenderingSurfaceId>
        {
            await _staThreadWriter.CreateSurface(
                renderingEngine,
                _mainLoopLifetime.Token),
            //await _staThreadWriter.CreateSurface(
            //    _mainLoopLifetime.Token),
        };

        if (surfaces is [var mainFormId, ..]
            && renderingEngine.TryGetRenderingSurface(mainFormId, out var mainForm))
        {
            mainForm.RenderingControl.RenderingFormClosed += (_, _) => _mainLoopLifetime.Cancel();
        }

        var previous = Stopwatch.GetTimestamp();
        var lag = TimeSpan.Zero;

        var msPerUpdate = TimeSpan.FromSeconds(1) / 60;

        var cnt = 0;
        while (
            //&& IsRunning
            !_disposedValue
            && !_mainLoopLifetime.Token.IsCancellationRequested)
        {
            var current = Stopwatch.GetTimestamp();
            var elapsed = Stopwatch.GetElapsedTime(previous, current);
            previous = current;
            lag += elapsed;

            //process input
            // TODO!

            while (lag >= msPerUpdate)
            {
                //Update
                // TODO - fix the UPS timer.. somehow :D
                _fpsTimer.StopUpdateTimer();
                RenderingSurfaceId? sId = null;

                ++cnt;
                foreach (var renderingSurfaceId in surfaces)
                {
                    if (!renderingEngine.TryGetRenderingSurface(
                        renderingSurfaceId,
                        out var renderingSurface))
                    {
                        _logger.LogRenderingSurfaceNotFound(
                            renderingSurfaceId);
                        break;
                    }

                    await _loopJob.Update(
                          renderingSurface,
                          keyboardHandle,
                          keyboardCharCache);

                    if (cnt == 10 * 60)
                    {
                        sId = await _staThreadWriter.CreateSurface(
                            renderingEngine,
                            _mainLoopLifetime.Token);

                        cnt = 0;
                    }
                }
                if (sId is not null)
                {
                    surfaces.Add(sId.Value);
                    sId = null;
                }
                lag -= msPerUpdate;
                _fpsTimer.StartUpdateTimer();
            }

            //Render
            foreach (var renderingSurfaceId in surfaces)
            {
                using var scope = _fpsTimer.StartRenderingTimerScope(
                    renderingSurfaceId);

                _loopJob.Render(
                    renderingEngine,
                    renderingSurfaceId);
            }
        }
        _mainLoopLifetime.Cancel();
    }

    private async ValueTask Dispose(bool disposing)
    {
        if (!_disposedValue)
        {
            if (disposing)
            {
            }

            _disposedValue = true;
            //Make sure the loop finishes
            _mainLoopLifetime.Cancel();
            await ExecutingTask;
        }
    }

    public async ValueTask DisposeAsync()
    {
        // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
        await Dispose(disposing: true);
        GC.SuppressFinalize(this);
    }
}

1	// Copyright © Michał Dembski and contributors.
2	// Distributed under MIT license. See LICENSE file in the root for more information.
3
4	using System.Diagnostics;
5	using Demo.Engine.Core.Features.StaThread;
6	using Demo.Engine.Core.Interfaces;
7	using Demo.Engine.Core.Interfaces.Rendering;
8	using Demo.Engine.Core.Requests.Keyboard;
9	using Demo.Engine.Core.ValueObjects;
10	using Mediator;
11	using Microsoft.Extensions.Logging;
12
13	namespace Demo.Engine.Core.Services;
14
15	internal sealed class MainLoopService
16	: IMainLoopService,
17	IAsyncDisposable
18	{
19	private readonly ILogger<MainLoopService> _logger;
20	private readonly IStaThreadWriter _staThreadWriter;
21	private readonly IMediator _mediator;
22	private readonly IFpsTimer _fpsTimer;
23	private readonly IMainLoopLifetime _mainLoopLifetime;
24	private readonly ILoopJob _loopJob;
25	private bool _disposedValue;
26
27	public Task ExecutingTask { get; }
28
29	public MainLoopService(	1✔
30	ILogger<MainLoopService> logger,	1✔
31	IStaThreadWriter staThreadWriter,	1✔
32	IMediator mediator,	1✔
33	IFpsTimer fpsTimer,	1✔
34	IRenderingEngine renderingEngine,	1✔
35	IMainLoopLifetime mainLoopLifetime,	1✔
36	ILoopJob loopJob)	1✔
37	{
38	_logger = logger;	1✔
39	_staThreadWriter = staThreadWriter;	1✔
40	_mediator = mediator;	1✔
41	_fpsTimer = fpsTimer;	1✔
42	_mainLoopLifetime = mainLoopLifetime;	1✔
43	_loopJob = loopJob;	1✔
44	ExecutingTask = Task.Run(async () =>	1✔
45	{	1✔
46	try	1✔
47	{	1✔
48	await DoAsync(renderingEngine);	1✔
49	}	1✔
50	catch (TaskCanceledException)	×
51	{	1✔
52	_mainLoopLifetime.Cancel();	×
53	}	×
54	catch (Exception ex)	×
55	{	1✔
56	_logger.LogMainLoopFailedWithError(ex);	×
57	_mainLoopLifetime.Cancel();	×
58	//throw;	1✔
59	}	×
60	});	1✔
61	}	1✔
62
63	private async Task DoAsync(
64	IRenderingEngine renderingEngine)
65	{
66	var keyboardHandle = await _mediator.Send(new KeyboardHandleRequest(), CancellationToken.None);	1✔
67	var keyboardCharCache = await _mediator.Send(new KeyboardCharCacheRequest(), CancellationToken.None);	1✔
68
69	var surfaces = new List<RenderingSurfaceId>	1✔
70	{	1✔
71	await _staThreadWriter.CreateSurface(	1✔
72	renderingEngine,	1✔
73	_mainLoopLifetime.Token),	1✔
74	//await _staThreadWriter.CreateSurface(	1✔
75	// _mainLoopLifetime.Token),	1✔
76	};	1✔
77
78	if (surfaces is [var mainFormId, ..]	1✔
79	&& renderingEngine.TryGetRenderingSurface(mainFormId, out var mainForm))	1✔
80	{
81	mainForm.RenderingControl.RenderingFormClosed += (_, _) => _mainLoopLifetime.Cancel();	1✔
82	}
83
84	var previous = Stopwatch.GetTimestamp();	1✔
85	var lag = TimeSpan.Zero;	1✔
86
87	var msPerUpdate = TimeSpan.FromSeconds(1) / 60;	1✔
88
89	var cnt = 0;	1✔
90	while (	1✔
91	//&& IsRunning	1✔
92	!_disposedValue	1✔
93	&& !_mainLoopLifetime.Token.IsCancellationRequested)	1✔
94	{
95	var current = Stopwatch.GetTimestamp();	1✔
96	var elapsed = Stopwatch.GetElapsedTime(previous, current);	1✔
97	previous = current;	1✔
98	lag += elapsed;	1✔
99
100	//process input
101	// TODO!
102
103	while (lag >= msPerUpdate)	1✔
104	{
105	//Update
106	// TODO - fix the UPS timer.. somehow :D
107	_fpsTimer.StopUpdateTimer();	1✔
108	RenderingSurfaceId? sId = null;	1✔
109
110	++cnt;	1✔
111	foreach (var renderingSurfaceId in surfaces)	1✔
112	{
113	if (!renderingEngine.TryGetRenderingSurface(
114	renderingSurfaceId,	1✔
115	out var renderingSurface))	1✔
116	{
117	_logger.LogRenderingSurfaceNotFound(	×
118	renderingSurfaceId);	×
119	break;	×
120	}
121
122	await _loopJob.Update(	1✔
123	renderingSurface,	1✔
124	keyboardHandle,	1✔
125	keyboardCharCache);	1✔
126
127	if (cnt == 10 * 60)
128	{
129	sId = await _staThreadWriter.CreateSurface(	×
130	renderingEngine,	×
131	_mainLoopLifetime.Token);	×
132
133	cnt = 0;	×
134	}
135	}
136	if (sId is not null)
137	{
138	surfaces.Add(sId.Value);	×
139	sId = null;	×
140	}
141	lag -= msPerUpdate;	1✔
142	_fpsTimer.StartUpdateTimer();	1✔
143	}
144
145	//Render
146	foreach (var renderingSurfaceId in surfaces)	1✔
147	{
148	using var scope = _fpsTimer.StartRenderingTimerScope(	1✔
149	renderingSurfaceId);	1✔
150
151	_loopJob.Render(	1✔
152	renderingEngine,	1✔
153	renderingSurfaceId);	1✔
154	}
155	}
156	_mainLoopLifetime.Cancel();	1✔
157	}	1✔
158
159	private async ValueTask Dispose(bool disposing)
160	{
161	if (!_disposedValue)	1✔
162	{
163	if (disposing)	1✔
164	{
165	}
166
167	_disposedValue = true;	1✔
168	//Make sure the loop finishes
169	_mainLoopLifetime.Cancel();	1✔
170	await ExecutingTask;	1✔
171	}
172	}	1✔
173
174	public async ValueTask DisposeAsync()
175	{
176	// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
177	await Dispose(disposing: true);	1✔
178	GC.SuppressFinalize(this);	1✔
179	}	1✔
180	}

DemoBytom / DemoEngine / 24940020806

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