ease up on artist task concurrency
This commit is contained in:
parent
fca5a40601
commit
262dc6d8cd
|
@ -185,7 +185,7 @@ namespace MediaBrowser.Server.Implementations.Library.Validators
|
||||||
/// <param name="cancellationToken">The cancellation token.</param>
|
/// <param name="cancellationToken">The cancellation token.</param>
|
||||||
/// <param name="progress">The progress.</param>
|
/// <param name="progress">The progress.</param>
|
||||||
/// <returns>Task{Artist[]}.</returns>
|
/// <returns>Task{Artist[]}.</returns>
|
||||||
private async Task<ConcurrentBag<Artist>> GetAllArtists(IEnumerable<Audio> allSongs, CancellationToken cancellationToken, IProgress<double> progress)
|
private async Task<List<Artist>> GetAllArtists(IEnumerable<Audio> allSongs, CancellationToken cancellationToken, IProgress<double> progress)
|
||||||
{
|
{
|
||||||
var allArtists = allSongs
|
var allArtists = allSongs
|
||||||
.SelectMany(i =>
|
.SelectMany(i =>
|
||||||
|
@ -203,60 +203,36 @@ namespace MediaBrowser.Server.Implementations.Library.Validators
|
||||||
.Distinct(StringComparer.OrdinalIgnoreCase)
|
.Distinct(StringComparer.OrdinalIgnoreCase)
|
||||||
.ToList();
|
.ToList();
|
||||||
|
|
||||||
const int maxTasks = 3;
|
var returnArtists = new List<Artist>(allArtists.Count);
|
||||||
|
|
||||||
var tasks = new List<Task>();
|
|
||||||
|
|
||||||
var returnArtists = new ConcurrentBag<Artist>();
|
|
||||||
|
|
||||||
var numComplete = 0;
|
var numComplete = 0;
|
||||||
var numArtists = allArtists.Count;
|
var numArtists = allArtists.Count;
|
||||||
|
|
||||||
foreach (var artist in allArtists)
|
foreach (var artist in allArtists)
|
||||||
{
|
{
|
||||||
if (tasks.Count > maxTasks)
|
cancellationToken.ThrowIfCancellationRequested();
|
||||||
{
|
|
||||||
await Task.WhenAll(tasks).ConfigureAwait(false);
|
|
||||||
tasks.Clear();
|
|
||||||
|
|
||||||
// Safe cancellation point, when there are no pending tasks
|
try
|
||||||
cancellationToken.ThrowIfCancellationRequested();
|
{
|
||||||
|
var artistItem = _libraryManager.GetArtist(artist);
|
||||||
|
|
||||||
|
await artistItem.RefreshMetadata(cancellationToken).ConfigureAwait(false);
|
||||||
|
|
||||||
|
returnArtists.Add(artistItem);
|
||||||
|
}
|
||||||
|
catch (IOException ex)
|
||||||
|
{
|
||||||
|
_logger.ErrorException("Error validating Artist {0}", ex, artist);
|
||||||
}
|
}
|
||||||
|
|
||||||
// Avoid accessing the foreach variable within the closure
|
// Update progress
|
||||||
var currentArtist = artist;
|
numComplete++;
|
||||||
|
double percent = numComplete;
|
||||||
|
percent /= numArtists;
|
||||||
|
|
||||||
tasks.Add(Task.Run(async () =>
|
progress.Report(100 * percent);
|
||||||
{
|
|
||||||
cancellationToken.ThrowIfCancellationRequested();
|
|
||||||
|
|
||||||
try
|
|
||||||
{
|
|
||||||
var artistItem = _libraryManager.GetArtist(currentArtist);
|
|
||||||
|
|
||||||
await artistItem.RefreshMetadata(cancellationToken).ConfigureAwait(false);
|
|
||||||
|
|
||||||
returnArtists.Add(artistItem);
|
|
||||||
}
|
|
||||||
catch (IOException ex)
|
|
||||||
{
|
|
||||||
_logger.ErrorException("Error validating Artist {0}", ex, currentArtist);
|
|
||||||
}
|
|
||||||
|
|
||||||
// Update progress
|
|
||||||
lock (progress)
|
|
||||||
{
|
|
||||||
numComplete++;
|
|
||||||
double percent = numComplete;
|
|
||||||
percent /= numArtists;
|
|
||||||
|
|
||||||
progress.Report(100 * percent);
|
|
||||||
}
|
|
||||||
}));
|
|
||||||
}
|
}
|
||||||
|
|
||||||
await Task.WhenAll(tasks).ConfigureAwait(false);
|
|
||||||
|
|
||||||
return returnArtists;
|
return returnArtists;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue
Block a user