private static string[] TryReadFileContent(string file, IMessageLogger messageLogger)
{
try
{
return(IoHelpers.ReadFileContent(file));
}
catch (IOException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
$"Could not access file '{file}'.", ex);
return(Array <string> .Empty);
}
catch (UnauthorizedAccessException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
$"Could not access file '{file}'.", ex);
return(Array <string> .Empty);
}
catch (DecoderFallbackException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
$"Cannot detect encoding for file '{file}'. Try to save the file as UTF8 or UTF16.", ex);
return(Array <string> .Empty);
}
}
public static XDocument TryParseXmlAnnotationDoc(
string resourcePath,
IMessageLogger messageLogger)
{
try
{
using (var stream = File.OpenRead(resourcePath))
{
return(TryParseXmlAnnotationDoc(
stream,
$"XML annotation '{resourcePath}'",
messageLogger));
}
}
catch (IOException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
$"Could not access file '{resourcePath}'.", ex);
return(null);
}
catch (UnauthorizedAccessException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
$"Could not access file '{resourcePath}'.", ex);
return(null);
}
}
public static SourceAnnotationInfo TryGetSourceInfo(
[NotNull] Target target,
[NotNull] IMessageLogger messageLogger)
{
SourceAnnotationInfo result = null;
try
{
// ReSharper disable once PossibleNullReferenceException
var reader = GetReader(target.Method.DeclaringType.Module);
result = TryGetSourceInfoCore(target, reader, messageLogger);
if (result == null)
{
messageLogger.WriteSetupErrorMessage(
target,
"No PDB data available.",
$"Ensure that there is actual pdb file for the assembly '{target.Method.DeclaringType?.Module.GetModulePath()}'.");
}
}
catch (COMException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.ExecutionError, target,
"Could not parse method symbols.", ex);
}
return(result);
}
// ReSharper restore ConvertClosureToMethodGroup
private static T?TryParseCore <T>(
Target target, XElement competitionNode,
string xmlAttributeName,
Func <string, T> parseCallback,
T fallbackValue,
IMessageLogger messageLogger)
where T : struct
{
var attributeValue = competitionNode.Attribute(xmlAttributeName)?.Value;
if (attributeValue == null)
{
return(fallbackValue);
}
try
{
return(parseCallback(attributeValue));
}
catch (FormatException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
target,
$"XML annotation for {target.MethodDisplayInfo}: could not parse {xmlAttributeName}.",
ex);
return(null);
}
}
private static XDocument TryParseXmlAnnotationDocCore(
[NotNull] Func <XmlReader> readerFactory,
[NotNull] string sourceDescription,
[NotNull] IMessageLogger messageLogger)
{
Code.NotNull(messageLogger, nameof(messageLogger));
Code.NotNullNorEmpty(sourceDescription, nameof(sourceDescription));
XDocument xmlAnnotationDoc;
using (var reader = readerFactory())
{
try
{
xmlAnnotationDoc = XDocument.Load(reader, LoadOptions.PreserveWhitespace | LoadOptions.SetLineInfo);
}
catch (ArgumentException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
$"{sourceDescription}: Could not parse XML annotation.", ex);
return(null);
}
catch (XmlException ex)
{
messageLogger.WriteExceptionMessage(
MessageSeverity.SetupError,
$"{sourceDescription}: Could not parse XML annotation.", ex);
return(null);
}
}
var rootNode = xmlAnnotationDoc.Element(CompetitionBenchmarksRootNode);
if (rootNode == null)
{
messageLogger.WriteSetupErrorMessage(
$"{sourceDescription}: root node {CompetitionBenchmarksRootNode} not found.");
return(null);
}
messageLogger.Logger.WriteVerbose($"{sourceDescription}: XML annotation parsed.");
return(xmlAnnotationDoc);
}
private static bool SpinWait(
Mutex mutex,
TimeSpan waitTimeout, TimeSpan spinWaitTimeout,
IMessageLogger messageLogger)
{
Code.InRange(waitTimeout, nameof(spinWaitTimeout), TimeSpan.Zero, _totalWaitTimeout);
Code.InRange(spinWaitTimeout, nameof(spinWaitTimeout), TimeSpan.Zero, _totalWaitTimeout);
if (spinWaitTimeout > waitTimeout)
{
spinWaitTimeout = waitTimeout;
}
bool lockTaken = false;
var totalSpinTime = TimeSpan.Zero;
while (!lockTaken && totalSpinTime < waitTimeout)
{
try
{
lockTaken = mutex.WaitOne(spinWaitTimeout);
if (!lockTaken)
{
messageLogger.WriteInfoMessage($"Another perftest is running, wait timeout {totalSpinTime} of {waitTimeout}.");
}
else if (totalSpinTime > TimeSpan.Zero)
{
messageLogger.WriteInfoMessage(
$"Another perftest completed, starting. Wait timeout {totalSpinTime} of {waitTimeout}.");
}
}
catch (AbandonedMutexException ex)
{
// It's ok to swallow abandoned mutex exception as we have no shared resources but logger output
// and the log is protected by FileShare.Read lock
// see https://msdn.microsoft.com/en-us/library/system.threading.abandonedmutexexception.aspx
// for more detail.
messageLogger.WriteExceptionMessage(
MessageSeverity.Informational,
$"Another perftest aborted, starting. Wait timeout {totalSpinTime} of {waitTimeout}.", ex);
lockTaken = true;
}
totalSpinTime += spinWaitTimeout;
}
return(lockTaken);
}