private async Task <(StepResult, BreakState)> DoReadDebugDataAsync(ReadDebugDataStep step)
{
var watches = _debugWatches;
BreakStateDispatchParameters dispatchParams = null;
if (!string.IsNullOrEmpty(step.WatchesFile.Path))
{
var result = await ReadDebugDataFileAsync("Valid watches", step.WatchesFile.Path, step.WatchesFile.IsRemote(), step.WatchesFile.CheckTimestamp);
if (!result.TryGetResult(out var data, out var error))
{
return(new StepResult(false, error.Message, ""), null);
}
var watchString = Encoding.UTF8.GetString(data);
var watchArray = watchString.Split(new[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries);
watches = Array.AsReadOnly(watchArray);
}
if (!string.IsNullOrEmpty(step.DispatchParamsFile.Path))
{
var result = await ReadDebugDataFileAsync("Dispatch parameters", step.DispatchParamsFile.Path, step.DispatchParamsFile.IsRemote(), step.DispatchParamsFile.CheckTimestamp);
if (!result.TryGetResult(out var data, out var error))
{
return(new StepResult(false, error.Message, ""), null);
}
var paramsString = Encoding.UTF8.GetString(data);
var dispatchParamsResult = BreakStateDispatchParameters.Parse(paramsString);
if (!dispatchParamsResult.TryGetResult(out dispatchParams, out error))
{
return(new StepResult(false, error.Message, ""), null);
}
}
{
var outputPath = step.OutputFile.Path;
var initOutputTimestamp = GetInitialFileTimestamp(outputPath);
int GetDispatchDwordCount(int fileDwordCount, out string warning)
{
warning = "";
if (dispatchParams == null)
{
return(fileDwordCount);
}
var laneDataSize = 1 /* system watch */ + watches.Count;
var totalLaneCount = dispatchParams.GridSizeX * dispatchParams.GridSizeY * dispatchParams.GridSizeZ;
var dispatchDwordCount = (int)totalLaneCount * laneDataSize;
if (fileDwordCount < dispatchDwordCount)
{
warning = $"Output file ({outputPath}) is smaller than expected.\r\n\r\n" +
$"Grid size as specified in the dispatch parameters file is ({dispatchParams.GridSizeX}, {dispatchParams.GridSizeY}, {dispatchParams.GridSizeZ}), " +
$"which corresponds to {totalLaneCount} lanes. With {laneDataSize} DWORDs per lane, the output file is expected to contain at least " +
$"{dispatchDwordCount} DWORDs, but it only contains {fileDwordCount} DWORDs.";
}
return(Math.Min(dispatchDwordCount, fileDwordCount));
}
BreakStateOutputFile outputFile;
uint[] localOutputData = null;
string stepWarning;
if (step.OutputFile.IsRemote())
{
var response = await _channel.SendWithReplyAsync <MetadataFetched>(
new FetchMetadata { FilePath = new[] { outputPath }, BinaryOutput = step.BinaryOutput }, _controller.CancellationToken);
if (response.Status == FetchStatus.FileNotFound)
{
return(new StepResult(false, $"Output file ({outputPath}) could not be found.", ""), null);
}
if (step.OutputFile.CheckTimestamp && response.Timestamp == initOutputTimestamp)
{
return(new StepResult(false, $"Output file ({outputPath}) was not modified. Data may be stale.", ""), null);
}
var offset = step.BinaryOutput ? step.OutputOffset : step.OutputOffset * 4;
var fileByteCount = Math.Max(0, response.ByteCount - offset);
var dispatchDwordCount = GetDispatchDwordCount(fileDwordCount: fileByteCount / 4, out stepWarning);
outputFile = new BreakStateOutputFile(outputPath, step.BinaryOutput, step.OutputOffset, response.Timestamp, dispatchDwordCount);
}
else
{
var timestamp = GetLocalFileLastWriteTimeUtc(outputPath);
if (step.OutputFile.CheckTimestamp && timestamp == initOutputTimestamp)
{
return(new StepResult(false, $"Output file ({outputPath}) was not modified. Data may be stale.", ""), null);
}
int dispatchDwordCount;
if (step.BinaryOutput)
{
if (!ReadLocalFile(outputPath, out var outputBytes, out var readError))
{
return(new StepResult(false, "Output file could not be opened. " + readError, ""), null);
}
var fileByteCount = Math.Max(0, outputBytes.Length - step.OutputOffset);
dispatchDwordCount = GetDispatchDwordCount(fileDwordCount: fileByteCount / 4, out stepWarning);
localOutputData = new uint[dispatchDwordCount];
Buffer.BlockCopy(outputBytes, step.OutputOffset, localOutputData, 0, dispatchDwordCount * 4);
}
else
{
var outputDwords = TextDebuggerOutputParser.ReadTextOutput(outputPath, step.OutputOffset);
dispatchDwordCount = GetDispatchDwordCount(fileDwordCount: outputDwords.Count, out stepWarning);
if (outputDwords.Count > dispatchDwordCount)
{
outputDwords.RemoveRange(dispatchDwordCount, outputDwords.Count - dispatchDwordCount);
}
localOutputData = outputDwords.ToArray();
}
outputFile = new BreakStateOutputFile(outputPath, step.BinaryOutput, offset: 0, timestamp, dispatchDwordCount);
}
var data = new BreakStateData(watches, outputFile, localOutputData);
return(new StepResult(true, stepWarning, ""), new BreakState(data, dispatchParams));
}
}
public BreakState(BreakStateData breakStateData, BreakStateDispatchParameters dispatchParameters)
{
Data = breakStateData;
DispatchParameters = dispatchParameters;
}