Dalamud/Dalamud/Interface/Internal/Windows/Data/Widgets/TaskSchedulerWidget.cs
srkizer a26bb58fdb
Use custom TaskScheduler for Framework.RunOnTick (#1597)
* Use custom TaskScheduler for Framework.RunOnTick

* TaskSchedulerWidget: add example
2024-03-14 00:36:38 +01:00

401 lines
15 KiB
C#

// ReSharper disable MethodSupportsCancellation // Using alternative method of cancelling tasks by throwing exceptions.
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Reflection;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Dalamud.Game;
using Dalamud.Interface.Colors;
using Dalamud.Interface.Components;
using Dalamud.Interface.ImGuiFileDialog;
using Dalamud.Interface.Utility;
using Dalamud.Interface.Utility.Raii;
using Dalamud.Logging.Internal;
using Dalamud.Utility;
using ImGuiNET;
using Serilog;
namespace Dalamud.Interface.Internal.Windows.Data.Widgets;
/// <summary>
/// Widget for displaying task scheduler test.
/// </summary>
internal class TaskSchedulerWidget : IDataWindowWidget
{
private readonly FileDialogManager fileDialogManager = new();
private readonly byte[] urlBytes = new byte[2048];
private readonly byte[] localPathBytes = new byte[2048];
private Task? downloadTask = null;
private (long Downloaded, long Total, float Percentage) downloadState;
private CancellationTokenSource taskSchedulerCancelSource = new();
/// <inheritdoc/>
public string[]? CommandShortcuts { get; init; } = { "tasksched", "taskscheduler" };
/// <inheritdoc/>
public string DisplayName { get; init; } = "Task Scheduler";
/// <inheritdoc/>
public bool Ready { get; set; }
/// <inheritdoc/>
public void Load()
{
this.Ready = true;
Encoding.UTF8.GetBytes(
"https://geo.mirror.pkgbuild.com/iso/2024.01.01/archlinux-2024.01.01-x86_64.iso",
this.urlBytes);
}
/// <inheritdoc/>
public void Draw()
{
var framework = Service<Framework>.Get();
if (ImGui.Button("Clear list"))
{
TaskTracker.Clear();
}
ImGui.SameLine();
ImGuiHelpers.ScaledDummy(10);
ImGui.SameLine();
if (ImGui.Button("Cancel using CancellationTokenSource"))
{
this.taskSchedulerCancelSource.Cancel();
this.taskSchedulerCancelSource = new();
}
ImGui.Text("Run in any thread: ");
ImGui.SameLine();
if (ImGui.Button("Short Task.Run"))
{
Task.Run(() => { Thread.Sleep(500); });
}
ImGui.SameLine();
if (ImGui.Button("Task in task(Delay)"))
{
var token = this.taskSchedulerCancelSource.Token;
Task.Run(async () => await this.TestTaskInTaskDelay(token), token);
}
ImGui.SameLine();
if (ImGui.Button("Task in task(Sleep)"))
{
Task.Run(async () => await this.TestTaskInTaskSleep());
}
ImGui.SameLine();
if (ImGui.Button("Faulting task"))
{
Task.Run(() =>
{
Thread.Sleep(200);
_ = ((string)null)!.Contains("dalamud"); // Intentional null exception.
});
}
ImGui.Text("Run in Framework.Update: ");
ImGui.SameLine();
if (ImGui.Button("ASAP"))
{
_ = framework.RunOnTick(() => Log.Information("Framework.Update - ASAP"), cancellationToken: this.taskSchedulerCancelSource.Token);
}
ImGui.SameLine();
if (ImGui.Button("In 1s"))
{
_ = framework.RunOnTick(() => Log.Information("Framework.Update - In 1s"), cancellationToken: this.taskSchedulerCancelSource.Token, delay: TimeSpan.FromSeconds(1));
}
ImGui.SameLine();
if (ImGui.Button("In 60f"))
{
_ = framework.RunOnTick(() => Log.Information("Framework.Update - In 60f"), cancellationToken: this.taskSchedulerCancelSource.Token, delayTicks: 60);
}
ImGui.SameLine();
if (ImGui.Button("In 1s+120f"))
{
_ = framework.RunOnTick(() => Log.Information("Framework.Update - In 1s+120f"), cancellationToken: this.taskSchedulerCancelSource.Token, delay: TimeSpan.FromSeconds(1), delayTicks: 120);
}
ImGui.SameLine();
if (ImGui.Button("In 2s+60f"))
{
_ = framework.RunOnTick(() => Log.Information("Framework.Update - In 2s+60f"), cancellationToken: this.taskSchedulerCancelSource.Token, delay: TimeSpan.FromSeconds(2), delayTicks: 60);
}
ImGui.SameLine();
if (ImGui.Button("Every 60 frames"))
{
_ = framework.RunOnTick(
async () =>
{
for (var i = 0L; ; i++)
{
Log.Information($"Loop #{i}; MainThread={ThreadSafety.IsMainThread}");
await framework.DelayTicks(60, this.taskSchedulerCancelSource.Token);
}
},
cancellationToken: this.taskSchedulerCancelSource.Token);
}
ImGui.SameLine();
if (ImGui.Button("Error in 1s"))
{
_ = framework.RunOnTick(() => throw new Exception("Test Exception"), cancellationToken: this.taskSchedulerCancelSource.Token, delay: TimeSpan.FromSeconds(1));
}
ImGui.SameLine();
if (ImGui.Button("As long as it's in Framework Thread"))
{
Task.Run(async () => await framework.RunOnFrameworkThread(() => { Log.Information("Task dispatched from non-framework.update thread"); }));
framework.RunOnFrameworkThread(() => { Log.Information("Task dispatched from framework.update thread"); }).Wait();
}
if (ImGui.CollapsingHeader("Download"))
{
ImGui.InputText("URL", this.urlBytes, (uint)this.urlBytes.Length);
ImGui.InputText("Local Path", this.localPathBytes, (uint)this.localPathBytes.Length);
ImGui.SameLine();
if (ImGuiComponents.IconButton("##localpathpicker", FontAwesomeIcon.File))
{
var defaultFileName = Encoding.UTF8.GetString(this.urlBytes).Split('\0', 2)[0].Split('/').Last();
this.fileDialogManager.SaveFileDialog(
"Choose a local path",
"*",
defaultFileName,
string.Empty,
(accept, newPath) =>
{
if (accept)
{
this.localPathBytes.AsSpan().Clear();
Encoding.UTF8.GetBytes(newPath, this.localPathBytes.AsSpan());
}
});
}
ImGui.TextUnformatted($"{this.downloadState.Downloaded:##,###}/{this.downloadState.Total:##,###} ({this.downloadState.Percentage:0.00}%)");
using var disabled =
ImRaii.Disabled(this.downloadTask?.IsCompleted is false || this.localPathBytes[0] == 0);
ImGui.AlignTextToFramePadding();
ImGui.TextUnformatted("Download");
ImGui.SameLine();
var downloadUsingGlobalScheduler = ImGui.Button("using default scheduler");
ImGui.SameLine();
var downloadUsingFramework = ImGui.Button("using Framework.Update");
if (downloadUsingGlobalScheduler || downloadUsingFramework)
{
var url = Encoding.UTF8.GetString(this.urlBytes).Split('\0', 2)[0];
var localPath = Encoding.UTF8.GetString(this.localPathBytes).Split('\0', 2)[0];
var ct = this.taskSchedulerCancelSource.Token;
this.downloadState = default;
var factory = downloadUsingGlobalScheduler
? Task.Factory
: framework.FrameworkThreadTaskFactory;
this.downloadState = default;
this.downloadTask = factory.StartNew(
async () =>
{
try
{
await using var to = File.Create(localPath);
using var client = new HttpClient();
using var conn = await client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead, ct);
this.downloadState.Total = conn.Content.Headers.ContentLength ?? -1L;
await using var from = conn.Content.ReadAsStream(ct);
var buffer = new byte[8192];
while (true)
{
if (downloadUsingFramework)
ThreadSafety.AssertMainThread();
if (downloadUsingGlobalScheduler)
ThreadSafety.AssertNotMainThread();
var len = await from.ReadAsync(buffer, ct);
if (len == 0)
break;
await to.WriteAsync(buffer.AsMemory(0, len), ct);
this.downloadState.Downloaded += len;
if (this.downloadState.Total >= 0)
{
this.downloadState.Percentage =
(100f * this.downloadState.Downloaded) / this.downloadState.Total;
}
}
}
catch (Exception e)
{
Log.Error(e, "Failed to download {from} to {to}.", url, localPath);
try
{
File.Delete(localPath);
}
catch
{
// ignore
}
}
},
cancellationToken: ct).Unwrap();
}
}
if (ImGui.Button("Drown in tasks"))
{
var token = this.taskSchedulerCancelSource.Token;
Task.Run(
() =>
{
for (var i = 0; i < 100; i++)
{
token.ThrowIfCancellationRequested();
Task.Run(
() =>
{
for (var j = 0; j < 100; j++)
{
token.ThrowIfCancellationRequested();
Task.Run(
() =>
{
for (var k = 0; k < 100; k++)
{
token.ThrowIfCancellationRequested();
Task.Run(
() =>
{
for (var l = 0; l < 100; l++)
{
token.ThrowIfCancellationRequested();
Task.Run(
async () =>
{
for (var m = 0; m < 100; m++)
{
token.ThrowIfCancellationRequested();
await Task.Delay(1, token);
}
});
}
});
}
});
}
});
}
});
}
ImGui.SameLine();
ImGuiHelpers.ScaledDummy(20);
// Needed to init the task tracker, if we're not on a debug build
Service<TaskTracker>.Get().Enable();
for (var i = 0; i < TaskTracker.Tasks.Count; i++)
{
var task = TaskTracker.Tasks[i];
var subTime = DateTime.Now;
if (task.Task == null)
subTime = task.FinishTime;
switch (task.Status)
{
case TaskStatus.Created:
case TaskStatus.WaitingForActivation:
case TaskStatus.WaitingToRun:
ImGui.PushStyleColor(ImGuiCol.Header, ImGuiColors.DalamudGrey);
break;
case TaskStatus.Running:
case TaskStatus.WaitingForChildrenToComplete:
ImGui.PushStyleColor(ImGuiCol.Header, ImGuiColors.ParsedBlue);
break;
case TaskStatus.RanToCompletion:
ImGui.PushStyleColor(ImGuiCol.Header, ImGuiColors.ParsedGreen);
break;
case TaskStatus.Canceled:
case TaskStatus.Faulted:
ImGui.PushStyleColor(ImGuiCol.Header, ImGuiColors.DalamudRed);
break;
default:
throw new ArgumentOutOfRangeException();
}
if (ImGui.CollapsingHeader($"#{task.Id} - {task.Status} {(subTime - task.StartTime).TotalMilliseconds}ms###task{i}"))
{
task.IsBeingViewed = true;
if (ImGui.Button("CANCEL (May not work)"))
{
try
{
var cancelFunc =
typeof(Task).GetMethod("InternalCancel", BindingFlags.NonPublic | BindingFlags.Instance);
cancelFunc?.Invoke(task, null);
}
catch (Exception ex)
{
Log.Error(ex, "Could not cancel task");
}
}
ImGuiHelpers.ScaledDummy(10);
ImGui.TextUnformatted(task.StackTrace?.ToString());
if (task.Exception != null)
{
ImGuiHelpers.ScaledDummy(15);
ImGui.TextColored(ImGuiColors.DalamudRed, "EXCEPTION:");
ImGui.TextUnformatted(task.Exception.ToString());
}
}
else
{
task.IsBeingViewed = false;
}
ImGui.PopStyleColor(1);
}
this.fileDialogManager.Draw();
}
private async Task TestTaskInTaskDelay(CancellationToken token)
{
await Task.Delay(5000, token);
}
#pragma warning disable 1998
private async Task TestTaskInTaskSleep()
#pragma warning restore 1998
{
Thread.Sleep(5000);
}
}