/// <summary>
/// Called only if the grouping runs in paralel.
/// Merges local group results into the global results.
/// </summary>
private void MergeResults(GroupJob job, int matcherID)
{
foreach (var item in job.groups)
{
var keyFull = new GroupDictKeyFull(item.Key.hash, job.resTable[item.Key.position]);
var buckets = this.globalGroups.GetOrAdd(keyFull, item.Value);
if (item.Value != null && !object.ReferenceEquals(buckets, item.Value))
{
for (int j = 0; j < aggregates.Length; j++)
{
aggregates[j].MergeThreadSafe(buckets[j], item.Value[j]);
}
}
}
this.groupJobs[matcherID] = null;
}
public TwoStepHalfStreamedBucket(QueryExpressionInfo expressionInfo, IGroupByExecutionHelper executionHelper, int columnCount, int[] usedVars) : base(expressionInfo, executionHelper, columnCount, usedVars)
{
this.groupJobs = new GroupJob[this.executionHelper.ThreadCount];
// Create an initial job, comparers and hashers
this.CreateHashersAndComparers(out ExpressionComparer[] comparers, out ExpressionHasher[] hashers);
var firstComp = RowEqualityComparerGroupKey.Factory(null, comparers, true);
var firstHasher = new RowHasher(hashers);
firstHasher.SetCache(firstComp.comparers);
this.groupJobs[0] = new GroupJob(firstComp, firstHasher, new TableResults(this.ColumnCount, this.executionHelper.FixedArraySize, this.usedVars));
for (int i = 1; i < this.executionHelper.ThreadCount; i++)
{
CloneHasherAndComparer(firstComp, firstHasher, out RowEqualityComparerGroupKey newComp, out RowHasher newHasher);
groupJobs[i] = new GroupJob(newComp, newHasher, new TableResults(this.ColumnCount, this.executionHelper.FixedArraySize, this.usedVars));
}
this.globalGroups = new ConcurrentDictionary <GroupDictKeyFull, AggregateBucketResult[]>(RowEqualityComparerGroupDickKeyFull.Factory(comparers, false));
}
public void TestRunReenteringGroup()
{
AsyncProcessor processor = new AsyncProcessor();
using ( processor )
{
const int total = 5;
_jobCount = 0;
GroupJob job = new GroupJob(total, 1);
processor.RunJob(job);
if (_jobCount != total + 3)
{
throw new Exception("TestRunReenteringGroup(): GroupJob( total, 1 ) failed. _jobCount = " + _jobCount);
}
_jobCount = 0;
job = new GroupJob(total, 3);
processor.RunJob(job);
if (_jobCount != total + 3)
{
throw new Exception("TestRunReenteringGroup(): GroupJob( total, 3 ) failed. _jobCount = " + _jobCount);
}
_jobCount = 0;
job = new GroupJob(total, 5);
processor.RunJob(job);
if (_jobCount != total + 3)
{
throw new Exception("TestRunReenteringGroup(): GroupJob( total, 5 ) failed. _jobCount = " + _jobCount);
}
_jobCount = 0;
job = new GroupJob(total, 11);
processor.RunJob(job);
if (_jobCount != total + 3)
{
throw new Exception("TestRunReenteringGroup(): GroupJob( total, 11 ) failed. _jobCount = " + _jobCount);
}
}
}
