private void GetChildrenAndContinue(EvalResultDataItem dataItem, DkmWorkList workList, DkmStackWalkFrame stackFrame, int initialRequestSize, DkmInspectionContext inspectionContext, DkmCompletionRoutine <DkmGetChildrenAsyncResult> completionRoutine)
{
var expansion = dataItem.Expansion;
var rows = ArrayBuilder <EvalResultDataItem> .GetInstance();
int index = 0;
if (expansion != null)
{
expansion.GetRows(this, rows, inspectionContext, dataItem, dataItem.Value, 0, initialRequestSize, visitAll: true, index: ref index);
}
var numRows = rows.Count;
Debug.Assert(index >= numRows);
Debug.Assert(initialRequestSize >= numRows);
var initialChildren = new DkmEvaluationResult[numRows];
GetEvaluationResultsAndContinue(rows, initialChildren, 0, numRows, workList, inspectionContext, stackFrame,
() => ContinueWithExceptionHandling(
() =>
{
var enumContext = DkmEvaluationResultEnumContext.Create(index, stackFrame, inspectionContext, new EnumContextDataItem(dataItem));
completionRoutine(new DkmGetChildrenAsyncResult(initialChildren, enumContext));
rows.Free();
},
e => completionRoutine(DkmGetChildrenAsyncResult.CreateErrorResult(e))));
}
internal DkmEvaluationResult[] GetChildren(
DkmEvaluationResult evalResult,
int initialRequestSize,
DkmInspectionContext inspectionContext,
out DkmEvaluationResultEnumContext enumContext
)
{
DkmGetChildrenAsyncResult getChildrenResult = default(DkmGetChildrenAsyncResult);
var workList = new DkmWorkList();
evalResult.GetChildren(
workList,
initialRequestSize,
inspectionContext ?? DefaultInspectionContext,
r =>
{
getChildrenResult = r;
}
);
workList.Execute();
var exception = getChildrenResult.Exception;
if (exception != null)
{
ExceptionDispatchInfo.Capture(exception).Throw();
}
enumContext = getChildrenResult.EnumContext;
return(getChildrenResult.InitialChildren);
}
void IDkmClrResultProvider.GetChildren(DkmEvaluationResult evaluationResult, DkmWorkList workList, int initialRequestSize, DkmInspectionContext inspectionContext, DkmCompletionRoutine <DkmGetChildrenAsyncResult> completionRoutine)
{
var dataItem = evaluationResult.GetDataItem <EvalResultDataItem>();
if (dataItem == null)
{
// We don't know about this result. Call next implementation
evaluationResult.GetChildren(workList, initialRequestSize, inspectionContext, completionRoutine);
return;
}
var expansion = dataItem.Expansion;
if (expansion == null)
{
var enumContext = DkmEvaluationResultEnumContext.Create(0, evaluationResult.StackFrame, inspectionContext, new EnumContextDataItem(evaluationResult));
completionRoutine(new DkmGetChildrenAsyncResult(new DkmEvaluationResult[0], enumContext));
return;
}
// Evaluate children with InspectionContext that is not the root.
inspectionContext = inspectionContext.With(NotRoot);
var rows = ArrayBuilder <EvalResult> .GetInstance();
int index = 0;
expansion.GetRows(this, rows, inspectionContext, dataItem, dataItem.Value, 0, initialRequestSize, visitAll: true, index: ref index);
var numRows = rows.Count;
Debug.Assert(index >= numRows);
Debug.Assert(initialRequestSize >= numRows);
var initialChildren = new DkmEvaluationResult[numRows];
CompletionRoutine <Exception> onException = e => completionRoutine(DkmGetChildrenAsyncResult.CreateErrorResult(e));
var wl = new WorkList(workList, onException);
wl.ContinueWith(() =>
GetEvaluationResultsAndContinue(evaluationResult, rows, initialChildren, 0, numRows, wl, inspectionContext,
() =>
wl.ContinueWith(
() =>
{
var enumContext = DkmEvaluationResultEnumContext.Create(index, evaluationResult.StackFrame, inspectionContext, new EnumContextDataItem(evaluationResult));
completionRoutine(new DkmGetChildrenAsyncResult(initialChildren, enumContext));
rows.Free();
}),
onException));
}
