internal bool ShouldExecute(IExecuteContext executeContext, CommandResultEntry[] previousResultCollection, ObjectId commandHash, out CommandResultEntry matchingResult)
{
var outputObjectsGroups = executeContext.GetOutputObjectsGroups();
MicrothreadLocalDatabases.MountDatabase(outputObjectsGroups);
try
{
matchingResult = FindMatchingResult(executeContext, previousResultCollection);
}
finally
{
MicrothreadLocalDatabases.UnmountDatabase();
}
if (matchingResult == null || Command.ShouldForceExecution())
{
// Ensure we ignore existing results if the execution is forced
matchingResult = null;
return(true);
}
return(false);
}
private void ScheduleBuildStep(BuilderContext builderContext, BuildStep instigator, BuildStep buildStep, IDictionary <string, string> variables)
{
if (buildStep.ExecutionId == 0)
{
if (buildStep.Parent != null && buildStep.Parent != instigator)
{
throw new InvalidOperationException("Scheduling a BuildStep with a different instigator that its parent");
}
if (buildStep.Parent == null)
{
buildStep.Parent = instigator;
}
// Compute content dependencies before scheduling the build
GenerateDependencies(buildStep);
// TODO: Big review of the log infrastructure of CompilerApp & BuildEngine!
// Create a logger that redirects to various places (BuildStep.Logger, timestampped log, global log, etc...)
var buildStepLogger = new BuildStepLogger(buildStep, Logger, startTime);
var logger = (Logger)buildStepLogger;
// Apply user-registered callbacks to the logger
buildStep.TransformExecuteContextLogger?.Invoke(ref logger);
// Create execute context
var executeContext = new ExecuteContext(this, builderContext, buildStep, logger)
{
Variables = new Dictionary <string, string>(variables)
};
//buildStep.ExpandStrings(executeContext);
if (runMode == Mode.Build)
{
MicroThread microThread = scheduler.Create();
// Set priority from this build step, if we have one.
if (buildStep.Priority.HasValue)
{
microThread.Priority = buildStep.Priority.Value;
}
buildStep.ExecutionId = microThread.Id;
microThread.Name = buildStep.ToString();
// Default:
// Schedule continuations as early as possible to help EnumerableBuildStep finish when all its task are finished.
// Otherwise, it would wait for all leaf to finish first before finishing parent EnumerableBuildStep.
// This should also reduce memory usage, and might improve cache coherency as well.
microThread.ScheduleMode = ScheduleMode.First;
microThread.Start(async() =>
{
// Wait for prerequisites
await Task.WhenAll(buildStep.PrerequisiteSteps.Select(x => x.ExecutedAsync()).ToArray());
// Check for failed prerequisites
var status = ResultStatus.NotProcessed;
if (buildStep.ArePrerequisitesSuccessful)
{
try
{
var outputObjectsGroups = executeContext.GetOutputObjectsGroups();
MicrothreadLocalDatabases.MountDatabase(outputObjectsGroups);
// Execute
status = await buildStep.Execute(executeContext, builderContext);
}
catch (TaskCanceledException e)
{
// Benlitz: I'm NOT SURE this is the correct explanation, it might be a more subtle race condition, but I can't manage to reproduce it again
executeContext.Logger.Warning("A child task of build step " + buildStep + " triggered a TaskCanceledException that was not caught by the parent task. The command has not handled cancellation gracefully.");
executeContext.Logger.Warning(e.Message);
status = ResultStatus.Cancelled;
}
catch (Exception e)
{
executeContext.Logger.Error("Exception in command " + buildStep + ": " + e);
status = ResultStatus.Failed;
}
finally
{
MicrothreadLocalDatabases.UnmountDatabase();
// Ensure the command set at least the result status
if (status == ResultStatus.NotProcessed)
{
throw new InvalidDataException("The build step " + buildStep + " returned ResultStatus.NotProcessed after completion.");
}
}
if (microThread.Exception != null)
{
executeContext.Logger.Error("Exception in command " + buildStep + ": " + microThread.Exception);
status = ResultStatus.Failed;
}
}
else
{
status = ResultStatus.NotTriggeredPrerequisiteFailed;
}
//if (completedTask.IsCanceled)
//{
// completedStep.Status = ResultStatus.Cancelled;
//}
var logType = LogMessageType.Info;
string logText = null;
switch (status)
{
case ResultStatus.Successful:
logType = LogMessageType.Verbose;
logText = "BuildStep {0} was successful.".ToFormat(buildStep.ToString());
break;
case ResultStatus.Failed:
logType = LogMessageType.Error;
logText = "BuildStep {0} failed.".ToFormat(buildStep.ToString());
break;
case ResultStatus.NotTriggeredPrerequisiteFailed:
logType = LogMessageType.Error;
logText = "BuildStep {0} failed of previous failed prerequisites.".ToFormat(buildStep.ToString());
break;
case ResultStatus.Cancelled:
logType = LogMessageType.Warning;
logText = "BuildStep {0} cancelled.".ToFormat(buildStep.ToString());
break;
case ResultStatus.NotTriggeredWasSuccessful:
logType = LogMessageType.Verbose;
logText = "BuildStep {0} is up-to-date and has been skipped".ToFormat(buildStep.ToString());
break;
case ResultStatus.NotProcessed:
throw new InvalidDataException("BuildStep has neither succeeded, failed, nor been cancelled");
}
if (logText != null)
{
var logMessage = new LogMessage(null, logType, logText);
executeContext.Logger.Log(logMessage);
}
buildStep.RegisterResult(executeContext, status);
stepCounter.AddStepResult(status);
});
}
else
{
buildStep.Clean(executeContext, builderContext, runMode == Mode.CleanAndDelete);
}
}
}