public static ReplicationControl Old_ConvertGuidesToInstructions(List<List<ProtoCore.ReplicationGuide>> partialGuides)
{
/*
//Test to ensure that we're within the known limitations, supporting at most 1 guide per argument
//Munge the format to use the legacy mechansi,
//This is temporary code
//@TODO(Luke)
List<int?> singlePartialGuides = new List<int?>();
foreach (List<int> guideList in partialGuides)
{
if (guideList.Count == 0)
singlePartialGuides.Add(null);
else if (guideList.Count > 1)
throw new NotImplementedException("Multiple guides on an argument not yet supported: {93AF9B93-7EDC-4EE9-8E20-1A5FF029871C}");
else
singlePartialGuides.Add(guideList[0]);
}*/
ReplicationControl rc = new ReplicationControl()
{
//Instructions = Old_BuildPartialReplicationInstructions(singlePartialGuides)
Instructions = BuildPartialReplicationInstructions(partialGuides)
};
//Now push the result to the legacy code to do the computation
return rc;
}
public static ReplicationControl Old_ConvertGuidesToInstructions(List <List <ProtoCore.ReplicationGuide> > partialGuides)
{
/*
* //Test to ensure that we're within the known limitations, supporting at most 1 guide per argument
* //Munge the format to use the legacy mechansi,
* //This is temporary code
* //@TODO(Luke)
* List<int?> singlePartialGuides = new List<int?>();
* foreach (List<int> guideList in partialGuides)
* {
* if (guideList.Count == 0)
* singlePartialGuides.Add(null);
* else if (guideList.Count > 1)
* throw new NotImplementedException("Multiple guides on an argument not yet supported: {93AF9B93-7EDC-4EE9-8E20-1A5FF029871C}");
* else
* singlePartialGuides.Add(guideList[0]);
* }*/
ReplicationControl rc = new ReplicationControl()
{
//Instructions = Old_BuildPartialReplicationInstructions(singlePartialGuides)
Instructions = BuildPartialReplicationInstructions(partialGuides)
};
//Now push the result to the legacy code to do the computation
return(rc);
}
private void ComputeFeps(StringBuilder log, ProtoCore.Runtime.Context context, List<StackValue> arguments, FunctionGroup funcGroup, ReplicationControl replicationControl,
List<List<ProtoCore.ReplicationGuide>> partialReplicationGuides, StackFrame stackFrame, Core core,
out List<FunctionEndPoint> resolvesFeps, out List<ReplicationInstruction> replicationInstructions)
{
//With replication guides only
//Exact match
//Match with single elements
//Match with single elements with upcast
//Try replication without type cast
//Match with type conversion
//Match with type conversion with upcast
//Try replication + type casting
//Try replication + type casting + Array promotion
#region First Case: Replicate only according to the replication guides
{
log.AppendLine("Case 1: Exact Match");
FunctionEndPoint fep = Case1GetCompleteMatchFEP(context, arguments, funcGroup, replicationControl,
stackFrame,
core, log);
if (fep != null)
{
//log.AppendLine("Resolution completed in " + sw.ElapsedMilliseconds + "ms");
if (core.Options.DumpFunctionResolverLogic)
core.DSExecutable.EventSink.PrintMessage(log.ToString());
resolvesFeps = new List<FunctionEndPoint>() { fep };
replicationInstructions = replicationControl.Instructions;
return;
}
}
#endregion
#region Case 2: Replication with no type cast
{
log.AppendLine("Case 2: Beginning Auto-replication, no casts");
//Build the possible ways in which we might replicate
List<List<ReplicationInstruction>> replicationTrials =
Replicator.BuildReplicationCombinations(replicationControl.Instructions, arguments, core);
foreach (List<ReplicationInstruction> replicationOption in replicationTrials)
{
ReplicationControl rc = new ReplicationControl() { Instructions = replicationOption };
log.AppendLine("Attempting replication control: " + rc);
List<List<StackValue>> reducedParams = Replicator.ComputeAllReducedParams(arguments,
rc.Instructions, core);
int resolutionFailures;
Dictionary<FunctionEndPoint, int> lookups = funcGroup.GetExactMatchStatistics(
context, reducedParams, stackFrame, core,
out resolutionFailures);
if (resolutionFailures > 0)
continue;
log.AppendLine("Resolution succeeded against FEP Cluster");
foreach (FunctionEndPoint fep in lookups.Keys)
log.AppendLine("\t - " + fep);
List<FunctionEndPoint> feps = new List<FunctionEndPoint>();
feps.AddRange(lookups.Keys);
//log.AppendLine("Resolution completed in " + sw.ElapsedMilliseconds + "ms");
if (core.Options.DumpFunctionResolverLogic)
core.DSExecutable.EventSink.PrintMessage(log.ToString());
//Otherwise we have a cluster of FEPs that can be used to dispatch the array
resolvesFeps = feps;
replicationInstructions = rc.Instructions;
return;
}
}
#endregion
#region Case 3: Match with type conversion, but no array promotion
{
log.AppendLine("Case 3: Type conversion");
Dictionary<FunctionEndPoint, int> candidatesWithDistances =
funcGroup.GetConversionDistances(context, arguments, replicationControl.Instructions,
core.ClassTable, core);
Dictionary<FunctionEndPoint, int> candidatesWithCastDistances =
funcGroup.GetCastDistances(context, arguments, replicationControl.Instructions, core.ClassTable,
core);
List<FunctionEndPoint> candidateFunctions = GetCandidateFunctions(stackFrame, candidatesWithDistances);
FunctionEndPoint compliantTarget = GetCompliantTarget(context, arguments,
replicationControl.Instructions, stackFrame, core,
candidatesWithCastDistances, candidateFunctions,
candidatesWithDistances);
if (compliantTarget != null)
{
log.AppendLine("Resolution Succeeded: " + compliantTarget);
if (core.Options.DumpFunctionResolverLogic)
core.DSExecutable.EventSink.PrintMessage(log.ToString());
resolvesFeps = new List<FunctionEndPoint>() { compliantTarget };
replicationInstructions = replicationControl.Instructions;
return;
}
}
#endregion
#region Case 4: Match with type conversion and replication
log.AppendLine("Case 4: Replication + Type conversion");
{
if (arguments.Any(arg => arg.IsArray))
{
//Build the possible ways in which we might replicate
List<List<ReplicationInstruction>> replicationTrials =
Replicator.BuildReplicationCombinations(replicationControl.Instructions, arguments, core);
foreach (List<ReplicationInstruction> replicationOption in replicationTrials)
{
ReplicationControl rc = new ReplicationControl() { Instructions = replicationOption };
log.AppendLine("Attempting replication control: " + rc);
//@TODO: THis should use the proper reducer?
Dictionary<FunctionEndPoint, int> candidatesWithDistances =
funcGroup.GetConversionDistances(context, arguments, rc.Instructions, core.ClassTable, core);
Dictionary<FunctionEndPoint, int> candidatesWithCastDistances =
funcGroup.GetCastDistances(context, arguments, rc.Instructions, core.ClassTable, core);
List<FunctionEndPoint> candidateFunctions = GetCandidateFunctions(stackFrame,
candidatesWithDistances);
FunctionEndPoint compliantTarget = GetCompliantTarget(context, arguments,
rc.Instructions, stackFrame, core,
candidatesWithCastDistances,
candidateFunctions,
candidatesWithDistances);
if (compliantTarget != null)
{
log.AppendLine("Resolution Succeeded: " + compliantTarget);
if (core.Options.DumpFunctionResolverLogic)
core.DSExecutable.EventSink.PrintMessage(log.ToString());
resolvesFeps = new List<FunctionEndPoint>() { compliantTarget };
replicationInstructions = rc.Instructions;
return;
}
}
}
}
#endregion
#region Case 5: Match with type conversion, replication and array promotion
log.AppendLine("Case 5: Replication + Type conversion + Array promotion");
{
//Build the possible ways in which we might replicate
List<List<ReplicationInstruction>> replicationTrials =
Replicator.BuildReplicationCombinations(replicationControl.Instructions, arguments, core);
//Add as a first attempt a no-replication, but allowing up-promoting
replicationTrials.Insert(0,
new List<ReplicationInstruction>()
);
foreach (List<ReplicationInstruction> replicationOption in replicationTrials)
{
ReplicationControl rc = new ReplicationControl() { Instructions = replicationOption };
log.AppendLine("Attempting replication control: " + rc);
//@TODO: THis should use the proper reducer?
Dictionary<FunctionEndPoint, int> candidatesWithDistances =
funcGroup.GetConversionDistances(context, arguments, rc.Instructions, core.ClassTable, core,
true);
Dictionary<FunctionEndPoint, int> candidatesWithCastDistances =
funcGroup.GetCastDistances(context, arguments, rc.Instructions, core.ClassTable, core);
List<FunctionEndPoint> candidateFunctions = GetCandidateFunctions(stackFrame,
candidatesWithDistances);
FunctionEndPoint compliantTarget = GetCompliantTarget(context, arguments,
rc.Instructions, stackFrame, core,
candidatesWithCastDistances,
candidateFunctions,
candidatesWithDistances);
if (compliantTarget != null)
{
log.AppendLine("Resolution Succeeded: " + compliantTarget);
if (core.Options.DumpFunctionResolverLogic)
core.DSExecutable.EventSink.PrintMessage(log.ToString());
resolvesFeps = new List<FunctionEndPoint>() { compliantTarget };
replicationInstructions = rc.Instructions;
return;
}
}
}
#endregion
resolvesFeps = new List<FunctionEndPoint>();
replicationInstructions = replicationControl.Instructions;
}
/// <summary>
/// Get complete match attempts to locate a function endpoint where 1 FEP matches all of the requirements for dispatch
/// </summary>
/// <param name="context"></param>
/// <param name="arguments"></param>
/// <param name="funcGroup"></param>
/// <param name="replicationControl"></param>
/// <param name="stackFrame"></param>
/// <param name="core"></param>
/// <param name="log"></param>
/// <returns></returns>
private FunctionEndPoint Case1GetCompleteMatchFEP(ProtoCore.Runtime.Context context, List<StackValue> arguments,
FunctionGroup funcGroup,
ReplicationControl replicationControl, StackFrame stackFrame,
Core core, StringBuilder log)
{
log.AppendLine("Attempting Dispatch with ---- RC: " + replicationControl);
//Exact match
List<FunctionEndPoint> exactTypeMatchingCandindates =
funcGroup.GetExactTypeMatches(context, arguments, replicationControl.Instructions, stackFrame, core);
FunctionEndPoint fep = null;
if (exactTypeMatchingCandindates.Count > 0)
{
if (exactTypeMatchingCandindates.Count == 1)
{
//Exact match
fep = exactTypeMatchingCandindates[0];
log.AppendLine("1 exact match found - FEP selected" + fep);
}
else
{
//Exact match with upcast
fep = SelectFEPFromMultiple(stackFrame,
core,
exactTypeMatchingCandindates, arguments);
log.AppendLine(exactTypeMatchingCandindates.Count + "exact matches found - FEP selected" + fep);
}
}
return fep;
}
/// <summary>
/// Conservative guess as to whether this call will replicate or not
/// This may give inaccurate answers if the node cluster doesn't actually exist
/// </summary>
/// <param name="context"></param>
/// <param name="arguments"></param>
/// <param name="stackFrame"></param>
/// <param name="core"></param>
/// <returns></returns>
public bool WillCallReplicate(ProtoCore.Runtime.Context context, List<StackValue> arguments,
List<List<ProtoCore.ReplicationGuide>> partialReplicationGuides, StackFrame stackFrame, Core core,
out List<List<ReplicationInstruction>> replicationTrials)
{
replicationTrials = new List<List<ReplicationInstruction>>();
if (partialReplicationGuides.Count > 0)
{
// Jun Comment: And at least one of them contains somthing
for (int n = 0; n < partialReplicationGuides.Count; ++n)
{
if (partialReplicationGuides[n].Count > 0)
{
return true;
}
}
}
#region Get Function Group
//@PERF: Possible optimisation point here, to deal with static dispatches that don't need replication analysis
//Handle resolution Pass 1: Name -> Method Group
FunctionGroup funcGroup;
try
{
funcGroup = globalFunctionTable.GlobalFuncTable[classScope + 1][methodName];
}
catch (KeyNotFoundException)
{
return false;
}
#endregion
//Replication Control is an ordered list of the elements that we have to replicate over
//Ordering implies containment, so element 0 is the outer most forloop, element 1 is nested within it etc.
//Take the explicit replication guides and build the replication structure
//Turn the replication guides into a guide -> List args data structure
ReplicationControl replicationControl =
Replicator.Old_ConvertGuidesToInstructions(partialReplicationGuides);
#region First Case: Replicate only according to the replication guides
{
FunctionEndPoint fep = Case1GetCompleteMatchFEP(context, arguments, funcGroup, replicationControl,
stackFrame,
core, new StringBuilder());
if (fep != null)
{
//found an exact match
return false;
}
}
#endregion
#region Case 2: Replication with no type cast
{
//Build the possible ways in which we might replicate
replicationTrials =
Replicator.BuildReplicationCombinations(replicationControl.Instructions, arguments, core);
foreach (List<ReplicationInstruction> replicationOption in replicationTrials)
{
ReplicationControl rc = new ReplicationControl() {Instructions = replicationOption};
List<List<StackValue>> reducedParams = Replicator.ComputeAllReducedParams(arguments,
rc.
Instructions, core);
int resolutionFailures;
Dictionary<FunctionEndPoint, int> lookups = funcGroup.GetExactMatchStatistics(
context, reducedParams, stackFrame, core,
out resolutionFailures);
if (resolutionFailures > 0)
continue;
return true; //Replicates against cluster
}
}
#endregion
#region Case 3: Match with type conversion, but no array promotion
{
Dictionary<FunctionEndPoint, int> candidatesWithDistances =
funcGroup.GetConversionDistances(context, arguments, replicationControl.Instructions,
core.ClassTable, core);
Dictionary<FunctionEndPoint, int> candidatesWithCastDistances =
funcGroup.GetCastDistances(context, arguments, replicationControl.Instructions, core.ClassTable,
core);
List<FunctionEndPoint> candidateFunctions = GetCandidateFunctions(stackFrame, candidatesWithDistances);
FunctionEndPoint compliantTarget = GetCompliantTarget(context, arguments,
replicationControl.Instructions, stackFrame, core,
candidatesWithCastDistances, candidateFunctions,
candidatesWithDistances);
if (compliantTarget != null)
{
return false; //Type conversion but no replication
}
}
#endregion
#region Case 5: Match with type conversion, replication and array promotion
{
//Build the possible ways in which we might replicate
replicationTrials =
Replicator.BuildReplicationCombinations(replicationControl.Instructions, arguments, core);
//Add as a first attempt a no-replication, but allowing up-promoting
replicationTrials.Insert(0,
new List<ReplicationInstruction>()
);
}
#endregion
return true; //It'll replicate if it suceeds
}