private void ReallocateBufferIfNeeded()
{
using (History._trace.TraceMethod())
{
int historySize = this.GetHistorySize();
if (historySize == this._capacity)
{
return;
}
HistoryInfo[] historyInfoArray = new HistoryInfo[historySize];
int num = this._countEntriesInBuffer;
if ((long)num < this._countEntriesAdded)
{
num = (int)this._countEntriesAdded;
}
if (this._countEntriesInBuffer > historySize)
{
num = historySize;
}
for (int index = num; index > 0; --index)
{
long id = this._countEntriesAdded - (long)index + 1L;
historyInfoArray[History.GetIndexFromId(id, historySize)] = this._buffer[this.GetIndexFromId(id)];
}
this._countEntriesInBuffer = num;
this._capacity = historySize;
this._buffer = historyInfoArray;
}
}