internal override IEnumerable <T> GetSequential()
{
if (source != null)
{
return(source);
}
return(WrapHelper.Wrap(customPartitioner.GetPartitions(1))[0]);
}
private void ApplySpaceAndWrappingOperations(
FormattingContext context,
TokenStream tokenStream,
TokenPairWithOperations[] tokenOperations,
OperationApplier applier,
CancellationToken cancellationToken)
{
using (Logger.LogBlock(FunctionId.Formatting_ApplySpaceAndLine, cancellationToken))
{
// go through each token pairs and apply operations. operations don't need to be applied in order
var partitioner = new Partitioner(context, tokenStream, tokenOperations);
// always create task 1 more than current processor count
var partitions = partitioner.GetPartitions(this.TaskExecutor == TaskExecutor.Synchronous ? 1 : Environment.ProcessorCount + 1);
var tasks = new List <Task>(
partitions.Select(
partition =>
this.TaskExecutor.StartNew(
() =>
{
cancellationToken.ThrowIfCancellationRequested();
partition.Do(operationPair => ApplySpaceAndWrappingOperationsBody(context, tokenStream, operationPair, applier, cancellationToken));
},
cancellationToken)));
Task.WaitAll(tasks.ToArray(), cancellationToken);
}
}
/// <include file='../../_Doc/mscorlib.xml' path='doc/members/member[@name="M:System.Threading.Tasks.Parallel.ForEach``1(System.Collections.Concurrent.Partitioner{``0},System.Threading.Tasks.ParallelOptions,System.Action{``0,System.Threading.Tasks.ParallelLoopState})"]/*' />
public static ParallelLoopResult ForEach <TSource>(
Partitioner <TSource> source,
ParallelOptions parallelOptions,
Action <TSource, ParallelLoopState> body)
{
var loopState = new ParallelLoopState();
foreach (var partition in source.GetPartitions(1))
{
while (partition.MoveNext())
{
if (loopState.ShouldExitCurrentIteration)
{
return new ParallelLoopResult {
IsCompleted = false, LowestBreakIteration = null
}
}
;
body(partition.Current, loopState);
}
}
return(new ParallelLoopResult {
IsCompleted = true
});
}
#endregion
}
internal override IList <IEnumerable <T> > GetEnumerables(QueryOptions options)
{
if (customPartitioner != null)
{
return(WrapHelper.Wrap(customPartitioner.GetPartitions(options.PartitionCount)));
}
Partitioner <T> partitioner
= (options.UseStrip) ? ParallelPartitioner.CreateForStrips(source, 1) : ParallelPartitioner.CreateBest(source);
return(WrapHelper.Wrap(partitioner.GetPartitions(options.PartitionCount)));
}
private static void ParseLogsSequential(Partitioner <string> logsPartitioner, out ConcurrentBag <string> stackTraces, out long workingTime)
{
var sequentialTimer = Stopwatch.StartNew();
var sequentialStackTraces = new ConcurrentBag <string>();
var enumerator = logsPartitioner.GetPartitions(1).Single();
while (enumerator.MoveNext())
{
ProcessLine(enumerator.Current, ref sequentialStackTraces);
}
stackTraces = sequentialStackTraces;
workingTime = sequentialTimer.ElapsedMilliseconds;
}
private void ApplySpaceAndWrappingOperations(
FormattingContext context,
TokenPairWithOperations[] tokenOperations,
OperationApplier applier,
CancellationToken cancellationToken)
{
using (Logger.LogBlock(FunctionId.Formatting_ApplySpaceAndLine, cancellationToken))
{
// go through each token pairs and apply operations. operations don't need to be applied in order
var partitioner = new Partitioner(context, tokenOperations);
// always create task 1 more than current processor count
var partitions = partitioner.GetPartitions(partitionCount: 1, cancellationToken);
foreach (var partition in partitions)
{
cancellationToken.ThrowIfCancellationRequested();
partition.Do(operationPair => ApplySpaceAndWrappingOperationsBody(context, operationPair, applier, cancellationToken));
}
}
}
internal override void GivePartitionedStream(IPartitionedStreamRecipient <TElement> recipient)
{
Contract.Assert(m_settings.DegreeOfParallelism.HasValue);
int partitionCount = m_settings.DegreeOfParallelism.Value;
OrderablePartitioner <TElement> orderablePartitioner = m_partitioner as OrderablePartitioner <TElement>;
// If the partitioner is not orderable, it will yield zeros as order keys. The order index state
// is irrelevant.
OrdinalIndexState indexState = (orderablePartitioner != null)
? GetOrdinalIndexState(orderablePartitioner)
: OrdinalIndexState.Shuffled;
PartitionedStream <TElement, int> partitions = new PartitionedStream <TElement, int>(
partitionCount,
Util.GetDefaultComparer <int>(),
indexState);
if (orderablePartitioner != null)
{
IList <IEnumerator <KeyValuePair <long, TElement> > > partitionerPartitions =
orderablePartitioner.GetOrderablePartitions(partitionCount);
if (partitionerPartitions == null)
{
throw new InvalidOperationException(SR.GetString(SR.PartitionerQueryOperator_NullPartitionList));
}
if (partitionerPartitions.Count != partitionCount)
{
throw new InvalidOperationException(SR.GetString(SR.PartitionerQueryOperator_WrongNumberOfPartitions));
}
for (int i = 0; i < partitionCount; i++)
{
IEnumerator <KeyValuePair <long, TElement> > partition = partitionerPartitions[i];
if (partition == null)
{
throw new InvalidOperationException(SR.GetString(SR.PartitionerQueryOperator_NullPartition));
}
partitions[i] = new OrderablePartitionerEnumerator(partition);
}
}
else
{
IList <IEnumerator <TElement> > partitionerPartitions =
m_partitioner.GetPartitions(partitionCount);
if (partitionerPartitions == null)
{
throw new InvalidOperationException(SR.GetString(SR.PartitionerQueryOperator_NullPartitionList));
}
if (partitionerPartitions.Count != partitionCount)
{
throw new InvalidOperationException(SR.GetString(SR.PartitionerQueryOperator_WrongNumberOfPartitions));
}
for (int i = 0; i < partitionCount; i++)
{
IEnumerator <TElement> partition = partitionerPartitions[i];
if (partition == null)
{
throw new InvalidOperationException(SR.GetString(SR.PartitionerQueryOperator_NullPartition));
}
partitions[i] = new PartitionerEnumerator(partition);
}
}
recipient.Receive <int>(partitions);
}