internal Graph BuildTypeGraph(int allocatedAfterTickIndex, int allocatedBeforeTickIndex, BuildTypeGraphOptions options, FilterForm filterForm)
{
Graph graph;
if (filterForm.filterVersion != 0 ||
options != BuildTypeGraphOptions.LumpBySignature ||
allocatedAfterTickIndex > 0 ||
allocatedBeforeTickIndex < int.MaxValue)
{
graph = new Graph(this, Graph.GraphType.HeapGraph);
graph.previousGraphTickIndex = allocatedAfterTickIndex;
}
else
{
Graph previousGraph = cachedGraph;
if (previousGraph != null && previousGraph.graphSource == this)
{
return(previousGraph);
}
cachedGraph = graph = new Graph(this, Graph.GraphType.HeapGraph);
if (previousGraph != null)
{
graph.previousGraphTickIndex = ((ObjectGraph)previousGraph.graphSource).tickIndex;
foreach (Vertex v in previousGraph.vertices.Values)
{
Vertex newV = graph.FindOrCreateVertex(v.name, v.signature, v.moduleName);
if (v.weightHistory == null)
{
newV.weightHistory = new ulong[1];
}
else
{
ulong[] weightHistory = v.weightHistory;
newV.weightHistory = new ulong[Math.Min(weightHistory.Length + 1, historyDepth)];
for (int i = v.weightHistory.Length - 1; i > 0; i--)
{
newV.weightHistory[i] = weightHistory[i - 1];
}
}
newV.weightHistory[0] = v.weight;
}
}
}
graph.typeGraphOptions = options;
graph.filterVersion = filterForm.filterVersion;
if (graph.previousGraphTickIndex < graph.allocatedAfterTickIndex)
{
graph.previousGraphTickIndex = graph.allocatedAfterTickIndex;
}
graph.allocatedAfterTickIndex = allocatedAfterTickIndex;
graph.allocatedBeforeTickIndex = allocatedBeforeTickIndex;
GcObject rootObject = CreateRootObject();
for (int i = 0; i < rootCount; i++)
{
roots[i].InterestLevel = InterestLevel.Ignore;
}
foreach (GcObject gcObject in idToObject.Values)
{
gcObject.parent = null;
gcObject.vertex = null;
gcObject.InterestLevel = InterestLevel.Ignore;
}
AssignParents(rootObject);
int index = 0;
foreach (GcType gcType in typeIdToGcType.Values)
{
gcType.index = index++;
}
GcType[] gcTypes = new GcType[index];
typeHintTable = new int[index];
foreach (GcType gcType in typeIdToGcType.Values)
{
gcTypes[gcType.index] = gcType;
}
AssignInterestLevelsToTypes(options, filterForm);
for (int i = 0; i < rootCount; i++)
{
AssignInterestLevelToObject(rootIDs[i], roots[i], options, filterForm, true);
}
foreach (KeyValuePair <ulong, GcObject> keyValuePair in idToObject)
{
GcObject gcObject = keyValuePair.Value;
if (gcObject.AllocTickIndex > allocatedAfterTickIndex && gcObject.AllocTickIndex < allocatedBeforeTickIndex)
{
AssignInterestLevelToObject(keyValuePair.Key, gcObject, options, filterForm, false);
}
else
{
gcObject.InterestLevel = InterestLevel.Ignore;
}
}
foreach (GcObject gcObject in idToObject.Values)
{
if (gcObject.InterestLevel == InterestLevel.Ignore)
{
CheckForParentMarkingDescendant(gcObject);
}
}
FindVertex(0, rootObject, graph, options);
for (int i = 0; i < rootCount; i++)
{
roots[i].vertex = null;
FindVertex(rootIDs[i], roots[i], graph, options);
}
foreach (KeyValuePair <ulong, GcObject> keyValuePair in idToObject)
{
ulong id = keyValuePair.Key;
GcObject gcObject = keyValuePair.Value;
if (gcObject.parent == null ||
(gcObject.InterestLevel & (InterestLevel.Interesting | InterestLevel.Display)) == InterestLevel.Ignore)
{
continue;
}
FindVertex(id, gcObject, graph, options);
}
Vertex[] pathFromRoot = new Vertex[32];
foreach (GcObject gcObject in idToObject.Values)
{
if (gcObject.parent == null ||
(gcObject.InterestLevel & (InterestLevel.Interesting | InterestLevel.Display)) == InterestLevel.Ignore ||
gcObject.AllocTickIndex <= allocatedAfterTickIndex ||
gcObject.AllocTickIndex >= allocatedBeforeTickIndex)
{
continue;
}
int levels = 0;
for (GcObject pathObject = gcObject; pathObject != null; pathObject = pathObject.parent)
{
if (pathObject.vertex != null)
{
levels++;
}
}
while (pathFromRoot.Length < levels + 1)
{
pathFromRoot = new Vertex[pathFromRoot.Length * 2];
}
int level = levels;
for (GcObject pathObject = gcObject; pathObject != null; pathObject = pathObject.parent)
{
if (pathObject.vertex != null)
{
level--;
pathFromRoot[level] = pathObject.vertex;
}
}
levels = Vertex.SqueezeOutRepetitions(pathFromRoot, levels);
for (int j = 0; j < levels - 1; j++)
{
Vertex fromVertex = pathFromRoot[j];
Vertex toVertex = pathFromRoot[j + 1];
Edge edge = graph.FindOrCreateEdge(fromVertex, toVertex);
edge.AddWeight(gcObject.Size(this));
}
Vertex thisVertex = pathFromRoot[levels - 1];
thisVertex.basicWeight += gcObject.Size(this);
thisVertex.count += 1;
}
foreach (Vertex v in graph.vertices.Values)
{
if (v.weight < v.outgoingWeight)
{
v.weight = v.outgoingWeight;
}
if (v.weight < v.incomingWeight)
{
v.weight = v.incomingWeight;
}
if (v.weightHistory == null)
{
v.weightHistory = new ulong[1];
}
}
foreach (Vertex v in graph.vertices.Values)
{
v.active = true;
}
graph.BottomVertex.active = false;
return(graph);
}
internal Graph BuildReferenceGraph(Graph orgGraph)
{
var graph = new Graph(this, Graph.GraphType.ReferenceGraph);
Vertex[] pathFromRoot = new Vertex[32];
GcObject rootObject = CreateRootObject();
FindVertex(0, rootObject, graph, BuildTypeGraphOptions.LumpBySignature);
rootObject.InterestLevel = InterestLevel.Interesting;
foreach (GcObject gcObject in idToObject.Values)
{
gcObject.parent = null;
}
// We wish to find all references to certain selected objects,
// or, to be precise, all references that keep these objects alive.
// To do this, we use a breadth first traversal of the object graph, using
// a queue of objects still to process. If we find a reference to one of the
// selected objects, we don't actually include this object, but instead
// just make note of the reference
// Initialize
rootObject.parent = null;
var foundBeforeMarker = new GcObject();
var queue = new Queue <GcObject>();
queue.Enqueue(rootObject);
// Loop
while (queue.Count != 0)
{
GcObject head = queue.Dequeue();
foreach (GcObject refObject in head.References)
{
if (refObject.parent == null || refObject.parent == foundBeforeMarker)
{
// this is a reference to either one of the "selected" objects
// or just to a new object
if (refObject.vertex != null && refObject.vertex.selected &&
(refObject.InterestLevel & (InterestLevel.Interesting | InterestLevel.Display)) != InterestLevel.Ignore &&
refObject.AllocTickIndex > orgGraph.allocatedAfterTickIndex &&
refObject.AllocTickIndex < orgGraph.allocatedBeforeTickIndex)
{
// add <root> -> ... -> head -> refObject to the reference graph
int levels = 0;
for (GcObject pathObject = head; pathObject != null; pathObject = pathObject.parent)
{
levels++;
}
while (pathFromRoot.Length < levels + 2)
{
pathFromRoot = new Vertex[pathFromRoot.Length * 2];
}
pathFromRoot[levels + 1] = graph.FindOrCreateVertex(refObject.vertex.name, refObject.vertex.signature, refObject.vertex.moduleName);
int level = levels;
for (GcObject pathObject = head; pathObject != null; pathObject = pathObject.parent)
{
if ((pathObject.InterestLevel & (InterestLevel.Interesting | InterestLevel.Display)) == InterestLevel.Ignore ||
pathObject.vertex == null)
{
pathFromRoot[level] = null;
}
else
{
pathFromRoot[level] = graph.FindOrCreateVertex(pathObject.vertex.name, pathObject.vertex.signature, pathObject.vertex.moduleName);
}
level--;
}
int nonZeroLevels = 0;
for (int j = 0; j <= levels + 1; j++)
{
if (pathFromRoot[j] != null)
{
pathFromRoot[nonZeroLevels++] = pathFromRoot[j];
}
}
levels = Vertex.SqueezeOutRepetitions(pathFromRoot, nonZeroLevels);
for (int j = 0; j < levels - 1; j++)
{
Vertex fromVertex = pathFromRoot[j];
Vertex toVertex = pathFromRoot[j + 1];
Edge edge = graph.FindOrCreateEdge(fromVertex, toVertex);
edge.AddWeight(1);
}
Vertex thisVertex = pathFromRoot[levels - 1];
thisVertex.basicWeight += 1;
if (refObject.parent == null)
{
thisVertex.count += 1;
refObject.parent = foundBeforeMarker;
}
}
else
{
refObject.parent = head;
queue.Enqueue(refObject);
}
}
}
}
foreach (Vertex v in graph.vertices.Values)
{
if (v.weight < v.outgoingWeight)
{
v.weight = v.outgoingWeight;
}
if (v.weight < v.incomingWeight)
{
v.weight = v.incomingWeight;
}
if (v.weightHistory == null)
{
v.weightHistory = new ulong[1];
}
}
foreach (Vertex v in graph.vertices.Values)
{
v.active = true;
}
graph.BottomVertex.active = false;
return(graph);
}
internal Graph BuildTypeGraph(int allocatedAfterTickIndex, int allocatedBeforeTickIndex, BuildTypeGraphOptions options)
{
if (graph == null || FilterForm.filterVersion != graphFilterVersion || allocatedAfterTickIndex >= 0 || allocatedBeforeTickIndex < int.MaxValue)
{
graph = new Graph(this);
graph.graphType = Graph.GraphType.HeapGraph;
graphFilterVersion = FilterForm.filterVersion;
graph.previousGraphTickIndex = allocatedAfterTickIndex;
}
else
{
ObjectGraph previousGraph = (ObjectGraph)graph.graphSource;
graph.previousGraphTickIndex = previousGraph.tickIndex;
graph.graphSource = this;
foreach (Vertex v in graph.vertices.Values)
{
if (v.weightHistory == null)
{
v.weightHistory = new uint[1];
}
else
{
uint[] weightHistory = v.weightHistory;
if (weightHistory.Length < historyDepth)
{
v.weightHistory = new uint[weightHistory.Length + 1];
}
for (int i = v.weightHistory.Length - 1; i > 0; i--)
{
v.weightHistory[i] = weightHistory[i - 1];
}
}
v.weightHistory[0] = v.weight;
v.weight = v.incomingWeight = v.outgoingWeight = v.basicWeight = 0;
v.count = 0;
foreach (Edge e in v.outgoingEdges.Values)
{
e.weight = 0;
}
}
}
if (graph.previousGraphTickIndex < graph.allocatedAfterTickIndex)
{
graph.previousGraphTickIndex = graph.allocatedAfterTickIndex;
}
graph.allocatedAfterTickIndex = allocatedAfterTickIndex;
graph.allocatedBeforeTickIndex = allocatedBeforeTickIndex;
GcType rootType = GetOrCreateGcType("<root>", 0);
GcObject rootObject = GetOrCreateObject(0);
rootObject.type = rootType;
rootObject.references = roots;
foreach (GcObject gcObject in idToObject.Values)
{
gcObject.level = int.MaxValue;
gcObject.vertex = null;
}
AssignLevels(rootObject);
AssignInterestLevels();
int index = 0;
foreach (GcType gcType in typeNameToGcType.Values)
{
gcType.index = index++;
}
GcType[] gcTypes = new GcType[index];
typeHintTable = new int[index];
foreach (GcType gcType in typeNameToGcType.Values)
{
gcTypes[gcType.index] = gcType;
}
Vertex[] pathFromRoot = new Vertex[32];
foreach (GcObject gcObject in idToObject.Values)
{
if (gcObject.level == int.MaxValue ||
(gcObject.interestLevel & (InterestLevel.Interesting | InterestLevel.Display)) == InterestLevel.Ignore ||
gcObject.allocTickIndex <= allocatedAfterTickIndex ||
gcObject.allocTickIndex >= allocatedBeforeTickIndex)
{
continue;
}
while (pathFromRoot.Length < gcObject.level + 1)
{
pathFromRoot = new Vertex[pathFromRoot.Length * 2];
}
for (GcObject pathObject = gcObject; pathObject != null; pathObject = pathObject.parent)
{
if ((pathObject.interestLevel & (InterestLevel.Interesting | InterestLevel.Display)) == InterestLevel.Ignore)
{
pathFromRoot[pathObject.level] = null;
}
else
{
pathFromRoot[pathObject.level] = FindVertex(pathObject, graph, options);
}
}
int levels = 0;
for (int i = 0; i <= gcObject.level; i++)
{
if (pathFromRoot[i] != null)
{
pathFromRoot[levels++] = pathFromRoot[i];
}
}
levels = Vertex.SqueezeOutRepetitions(pathFromRoot, levels);
for (int i = 0; i < levels - 1; i++)
{
Vertex fromVertex = pathFromRoot[i];
Vertex toVertex = pathFromRoot[i + 1];
Edge edge = graph.FindOrCreateEdge(fromVertex, toVertex);
edge.AddWeight(gcObject.size);
}
Vertex thisVertex = pathFromRoot[levels - 1];
thisVertex.basicWeight += gcObject.size;
thisVertex.count += 1;
}
foreach (Vertex v in graph.vertices.Values)
{
if (v.weight < v.outgoingWeight)
{
v.weight = v.outgoingWeight;
}
if (v.weight < v.incomingWeight)
{
v.weight = v.incomingWeight;
}
if (v.weightHistory == null)
{
v.weightHistory = new uint[1];
}
}
foreach (Vertex v in graph.vertices.Values)
{
v.active = true;
}
graph.BottomVertex.active = false;
return(graph);
}
