/// <summary>The parallel for each call, that ensures valid multi threaded opeartions for webgrease calls.</summary>
/// <param name="idParts">The id parts.</param>
/// <param name="items">The items.</param>
/// <param name="parallelAction">The parallel action.</param>
/// <param name="serialAction">The serial action.</param>
/// <typeparam name="T">The type of items</typeparam>
public void ParallelForEach <T>(Func <T, string[]> idParts, IEnumerable <T> items, Func <IWebGreaseContext, T, ParallelLoopState, bool> parallelAction, Func <IWebGreaseContext, T, bool> serialAction = null)
{
var id = idParts(default(T));
this.SectionedAction(id).Execute(() =>
{
var serialLock = new object();
var parallelForEachItems = new List <Tuple <IWebGreaseContext, DelayedLogManager, T> >();
var done = 0;
foreach (var item in items)
{
// TODO: Better name then item ToString?
var delayedLogManager = new DelayedLogManager(this.Log, item.ToString());
var threadContext = new WebGreaseContext(new WebGreaseConfiguration(this.Configuration), delayedLogManager.LogManager, this.Cache.CurrentCacheSection, this.Preprocessing);
var success = true;
if (serialAction != null)
{
success = serialAction(threadContext, item);
}
if (success)
{
parallelForEachItems.Add(new Tuple <IWebGreaseContext, DelayedLogManager, T>(threadContext, delayedLogManager, item));
}
}
Parallel.ForEach(
parallelForEachItems,
(item, state) =>
{
var sectionId = ToStringId(idParts(item.Item3));
parallelAction(item.Item1, item.Item3, state);
var measureResult = item.Item1.Measure.GetResults();
Safe.Lock(
serialLock,
Safe.MaxLockTimeout,
() =>
{
this.threadedMeasureResults.AddRange(item.Item1.ThreadedMeasureResults);
this.threadedMeasureResults.Add(new KeyValuePair <string, IEnumerable <TimeMeasureResult> >(sectionId, measureResult));
item.Item2.Flush();
done++;
if (done == parallelForEachItems.Count - 1)
{
parallelForEachItems.ForEach(i => i.Item2.Flush());
}
});
});
});
}
/// <summary>Add resultsToAdd to results.</summary>
/// <param name="resultsToAdd">The results To Add.</param>
/// <param name="groupSelector">The group Selector.</param>
/// <returns>The grouped result</returns>
public static IEnumerable <TimeMeasureResult> Group(this IEnumerable <TimeMeasureResult> resultsToAdd, Func <TimeMeasureResult, string> groupSelector)
{
return
(resultsToAdd
.GroupBy(groupSelector)
.Select(s => new TimeMeasureResult
{
IdParts = WebGreaseContext.ToIdParts(s.Key),
Count = s.Min(m => m.Count),
Duration = s.Sum(m => m.Duration)
})
.OrderByDescending(r => r.Duration)
.ToArray());
}
/// <summary>Gets the measure results for this timer.</summary>
/// <returns>The measure results.</returns>
public TimeMeasureResult[] GetResults()
{
return
(this.measurements.Last().OrderByDescending(m => m.Value)
.Select(
m =>
new TimeMeasureResult
{
IdParts = WebGreaseContext.ToIdParts(m.Key),
Duration = m.Value,
Count = this.measurementCounts.Last()[m.Key]
})
.ToArray());
}
/// <summary>The main entry point to the tool.</summary>
/// <param name="args">The command line parameters.</param>
/// <returns>The program result.</returns>
internal static int Main(string[] args)
{
try
{
if (args == null || !args.Any())
{
Console.WriteLine(ResourceStrings.Usage);
return(1);
}
WebGreaseConfiguration config;
var mode = GenerateConfiguration(args, out config);
var context = new WebGreaseContext(config);
switch (mode)
{
case ActivityMode.Minify:
ExecuteMinification(context);
break;
case ActivityMode.Validate:
ExecuteValidation(context);
break;
case ActivityMode.Bundle:
ExecuteBundling(context);
break;
case ActivityMode.AutoName:
ExecuteHashFiles(context);
break;
case ActivityMode.SpriteImages:
ExecuteImageSpriting(context);
break;
default:
Console.WriteLine(ResourceStrings.Usage);
return(1);
}
}
catch (Exception ex)
{
// general catch so unhandled exceptions don't result in a stack dump on the screen
HandleError(ex, null, ResourceStrings.GeneralErrorMessage);
return(-1);
}
return(0);
}
/// <summary>Starts a new timer.</summary>
/// <param name="isGroup">If it should also start a Group.</param>
/// <param name="idParts">The id parts.</param>
public void Start(bool isGroup, params string[] idParts)
{
var id = WebGreaseContext.ToStringId(idParts);
if (this.timers.Any(t => t.Id.Equals(id)))
{
throw new BuildWorkflowException("An error occurred while starting timer for {0}, probably a wrong start/end for key: ".InvariantFormat(id));
}
this.PauseLastTimer();
this.timers.Add(new TimeMeasureItem(id, DateTime.Now));
if (isGroup)
{
this.BeginGroup();
}
}
/// <summary>Ends an already started timer.</summary>
/// <param name="isGroup">if it is a group.</param>
/// <param name="idParts">The id parts.</param>
public void End(bool isGroup, params string[] idParts)
{
if (isGroup)
{
this.EndGroup();
}
var id = WebGreaseContext.ToStringId(idParts);
var lastTimer = this.timers.Last();
if (lastTimer.Id != id)
{
throw new BuildWorkflowException("Trying to end a timer that was not started.");
}
this.StopTimer(lastTimer);
this.ResumeLastTimer();
}
/// <summary>
/// Executes the action for the cached section
/// the boolean/success result of the action will determine if the action will be stored in cache.
/// </summary>
/// <param name="cachableSectionAction">The section action.</param>
/// <returns>If all was successfull (being passed from within the actions).</returns>
public bool Execute(Func <ICacheSection, bool> cachableSectionAction)
{
var id = WebGreaseContext.ToStringId(this.idParts);
var webGreaseSectionKey = new WebGreaseSectionKey(this.context, id, this.cacheVarByContentItem, this.cacheVarBySetting, this.cacheVarByFileSet);
var sectionLock = SectionLocks.GetOrAdd(webGreaseSectionKey.Value, new object());
return(Safe.Lock(
sectionLock,
this.cacheInfiniteWaitForLock ? Safe.MaxLockTimeout : Safe.DefaultLockTimeout,
() =>
{
var errorHasOccurred = false;
EventHandler logOnErrorOccurred = delegate { errorHasOccurred = true; };
this.context.Log.ErrorOccurred += logOnErrorOccurred;
var cacheSection = this.context.Cache.BeginSection(webGreaseSectionKey);
try
{
if (this.context.TemporaryIgnore(this.cacheVarByFileSet, this.cacheVarByContentItem) && !errorHasOccurred)
{
cacheSection.Save();
return true;
}
cacheSection.Load();
if (this.cacheIsSkipable && cacheSection.CanBeSkipped())
{
if (this.whenSkippedAction != null)
{
this.whenSkippedAction(cacheSection);
}
if (!errorHasOccurred)
{
return true;
}
}
if (this.restoreFromCacheAction != null && cacheSection.CanBeRestoredFromCache())
{
if (this.restoreFromCacheAction(cacheSection) && !errorHasOccurred)
{
return true;
}
}
this.context.Measure.Start(this.isGroup, this.idParts);
try
{
if (!cachableSectionAction(cacheSection) || errorHasOccurred)
{
return false;
}
cacheSection.Save();
return true;
}
finally
{
this.context.Measure.End(this.isGroup, this.idParts);
}
}
finally
{
this.context.Log.ErrorOccurred -= logOnErrorOccurred;
cacheSection.EndSection();
}
}));
}
