/*public Task<IResultChunk> GetNextChunkAsync()
* {
* return _downloadTasks.IsCompleted ? Task.FromResult<SFResultChunk>(null) : _downloadTasks.Take();
* }*/
public Task <IResultChunk> GetNextChunkAsync()
{
logger.InfoFmt("NextChunkToConsume: {0}, NextChunkToDownload: {1}",
nextChunkToConsumeIndex, nextChunkToDownloadIndex);
if (nextChunkToConsumeIndex < chunkInfos.Count)
{
Task <IResultChunk> chunk = taskQueues[nextChunkToConsumeIndex % prefetchSlot];
if (nextChunkToDownloadIndex < chunkInfos.Count && nextChunkToConsumeIndex > 0)
{
SFReusableChunk reusableChunk = chunkDatas[nextChunkToDownloadIndex % prefetchSlot];
reusableChunk.Reset(chunkInfos[nextChunkToDownloadIndex], nextChunkToDownloadIndex);
taskQueues[nextChunkToDownloadIndex % prefetchSlot] = DownloadChunkAsync(new DownloadContextV3()
{
chunk = reusableChunk,
qrmk = this.qrmk,
chunkHeaders = this.chunkHeaders,
cancellationToken = externalCancellationToken
});
nextChunkToDownloadIndex++;
}
nextChunkToConsumeIndex++;
return(chunk);
}
else
{
return(Task.FromResult <IResultChunk>(null));
}
}