private void UpdateLogEntryIndicesNoLock(MergedLogFileChanges changes)
{
// DO NOT CALL EXTERNAL / VIRTUAL METHODS OF ANY KIND HERE
// We only need to re-calculate those indices if there was an invalidation or a portion
// of this index. If there wasn't, then ProcessAppendsNoLock() already does its job as required...
if (changes.TryGetFirstInvalidationIndex(out var firstInvalidatedIndex))
{
for (int i = firstInvalidatedIndex.Value; i < _indices.Count; ++i)
{
var index = _indices[i];
index.MergedLogEntryIndex = (int)CalculateLogEntryIndexFor(i, index);
_indices[i] = index;
}
}
}
private void ProcessAppendsNoLock(IReadOnlyList <MergedLogFileSection> pendingModifications, MergedLogFileChanges changes)
{
// DO NOT CALL EXTERNAL / VIRTUAL METHODS OF ANY KIND HERE
var indices = CreateIndices(pendingModifications);
var invalidated = false;
var appendStartingIndex = _indices.Count;
foreach (var index in indices)
{
var insertionIndex = FindInsertionIndexNoLock(index);
if (insertionIndex < _indices.Count)
{
if (!invalidated)
{
// Here's the awesome thing: We're inserting a "pre-sorted" list of indices
// into our index buffer. Therefore, the very first index which requires an invalidation
// is also the LOWEST POSSIBLE index which could require an invalidation and therefore
// there can only ever be one invalidation while this method is executing.
// We do need to take into account that even though we're invalidating a region,
// that doesn't mean we also didn't append something previously....
var appendCount = _indices.Count - appendStartingIndex;
if (appendCount > 0)
{
changes.Append(appendStartingIndex, appendCount);
}
changes.InvalidateFrom(insertionIndex);
invalidated = true;
}
}
var actualIndex = index;
actualIndex.MergedLogEntryIndex = (int)CalculateLogEntryIndexFor(insertionIndex, index);
_indices.Insert(insertionIndex, actualIndex);
}
var appendCount2 = _indices.Count - appendStartingIndex;
if (appendCount2 > 0)
{
changes.Append(appendStartingIndex, appendCount2);
}
}
private void ProcessResetsNoLock(IReadOnlyList <MergedLogFileSection> pendingModifications, MergedLogFileChanges changes)
{
// DO NOT CALL EXTERNAL / VIRTUAL METHODS OF ANY KIND HERE
foreach (var pendingModification in pendingModifications)
{
if (pendingModification.Section.IsReset)
{
var logFileIndex = GetLogFileIndex(pendingModification.LogFile);
var firstIndex = _indices.FindIndex(x => x.LogFileIndex == logFileIndex);
if (firstIndex >= 0)
{
changes.InvalidateFrom(firstIndex);
_indices.RemoveAll(x => x.LogFileIndex == logFileIndex);
if (_indices.Count == 0)
{
changes.Reset();
}
}
}
}
}
