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Fix DisposeTrack and improve AsyncLazy to support disposal

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This commit is contained in:
Dean Herbert 2017-11-30 05:05:07 +09:00
parent dddd432dc8
commit d402222f17
2 changed files with 56 additions and 9 deletions
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63
osu.Game/Beatmaps/WorkingBeatmap.cs
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@ -31,7 +31,7 @@ namespace osu.Game.Beatmaps
Mods.ValueChanged += mods => applyRateAdjustments();
beatmap = new AsyncLazy<Beatmap>(populateBeatmap);
background = new AsyncLazy<Texture>(populateBackground);
background = new AsyncLazy<Texture>(populateBackground, b => b == null || !b.IsDisposed);
track = new AsyncLazy<Track>(populateTrack);
waveform = new AsyncLazy<Waveform>(populateWaveform);
}
@ -99,10 +99,11 @@ namespace osu.Game.Beatmaps
if (WaveformLoaded) Waveform?.Dispose();
}
public void DisposeTrack()
{
if (TrackLoaded) Track?.Dispose();
}
/// <summary>
/// Eagerly dispose of the audio track associated with this <see cref="WorkingBeatmap"/> (if any).
/// Accessing track again will load a fresh instance.
/// </summary>
public void RecycleTrack() => track.Recycle();
private void applyRateAdjustments(Track t = null)
{
@ -114,11 +115,57 @@ namespace osu.Game.Beatmaps
mod.ApplyToClock(t);
}
public class AsyncLazy<T> : Lazy<Task<T>>
public class AsyncLazy<T>
{
public AsyncLazy(Func<T> valueFactory)
: base(() => Task.Run(valueFactory))
private Lazy<Task<T>> lazy;
private readonly Func<T> valueFactory;
private readonly Func<T, bool> stillValidFunction;
public AsyncLazy(Func<T> valueFactory, Func<T, bool> stillValidFunction = null)
{
this.valueFactory = valueFactory;
this.stillValidFunction = stillValidFunction;
init();
}
public void Recycle()
{
if (!IsValueCreated) return;
(lazy.Value.Result as IDisposable)?.Dispose();
init();
}
public bool IsValueCreated
{
get
{
ensureValid();
return lazy.IsValueCreated;
}
}
public Task<T> Value
{
get
{
ensureValid();
return lazy.Value;
}
}
private void ensureValid()
{
if (!lazy.IsValueCreated || (stillValidFunction?.Invoke(lazy.Value.Result) ?? true)) return;
init();
}
private void init()
{
lazy = new Lazy<Task<T>>(() => Task.Run(valueFactory));
}
}
}

2
osu.Game/OsuGameBase.cs
View File

@ -154,7 +154,7 @@ namespace osu.Game
Debug.Assert(lastBeatmap != null);
Debug.Assert(lastBeatmap.Track != null);
lastBeatmap.DisposeTrack();
lastBeatmap.RecycleTrack();
}
Audio.Track.AddItem(b.Track);