public void Dispose()
{
if (TaskSlotScheduler != null)
{
TaskSlotScheduler.FreeSlot();
TaskSlotScheduler = null;
}
}
internal static async Task <BuildResult> RunParallelBuildOperation(ProgressMonitor monitor, ConfigurationSelector configuration, IEnumerable <SolutionItem> sortedItems, Func <ProgressMonitor, SolutionItem, Task <BuildResult> > buildAction, bool ignoreFailed)
{
List <SolutionItem> toBuild = new List <SolutionItem> (sortedItems);
BuildResult cres = new BuildResult();
cres.BuildCount = 0;
// Limit the number of concurrent builders to processors / 2
var slotScheduler = new TaskSlotScheduler(Environment.ProcessorCount / 2);
// Create a dictionary with the status objects of all items
var buildStatus = new Dictionary <SolutionItem, BuildStatus> ();
foreach (var it in toBuild)
{
buildStatus.Add(it, new BuildStatus());
}
// Start the build tasks for all itemsw
foreach (var itemToBuild in toBuild)
{
if (monitor.CancellationToken.IsCancellationRequested)
{
break;
}
var item = itemToBuild;
var myStatus = buildStatus [item];
var myMonitor = monitor.BeginAsyncStep(1);
// Get a list of the status objects for all items on which this one depends
var refStatus = item.GetReferencedItems(configuration).Select(it => {
BuildStatus bs;
buildStatus.TryGetValue(it, out bs);
return(bs);
}).Where(t => t != null).ToArray();
// Build the item when all its dependencies have been built
var refTasks = refStatus.Select(bs => bs.Task);
myStatus.Task = Task.WhenAll(refTasks).ContinueWith(async t => {
if (!ignoreFailed && (refStatus.Any(bs => bs.Failed) || t.IsFaulted))
{
myStatus.Failed = true;
}
else
{
using (await slotScheduler.GetTaskSlot())
myStatus.Result = await buildAction(myMonitor, item);
myStatus.Failed = myStatus.Result != null && myStatus.Result.ErrorCount > 0;
}
myMonitor.Dispose();
}, Runtime.MainTaskScheduler).Unwrap();
if (!Runtime.Preferences.ParallelBuild.Value)
{
await myStatus.Task;
}
}
// Wait for all tasks to end
await Task.WhenAll(buildStatus.Values.Select(bs => bs.Task));
// Generate the errors in the order they were supposed to build
foreach (var it in toBuild)
{
BuildStatus bs;
if (buildStatus.TryGetValue(it, out bs) && bs.Result != null)
{
cres.Append(bs.Result);
}
}
return(cres);
}
