private void ProduceTask()
{
using var reader = new StreamReader(_fileName);
while (true)
{
IMemoryOwner <char> lease = MemoryPool <char> .Shared.Rent(_bufferSize);
int ret = reader.Read(lease.Memory.Span);
if (ret >= _bufferSize)
{
_blocks.Add(lease);
}
else// last chunk => compute sum directly here
{
_blocks.CompleteAdding();
var sum = DigitsSummer.SumVx2A(lease.Memory.Span.Slice(0, ret));
Interlocked.Add(ref _result, sum);
lease.Dispose();
break;
}
}
}
