private void CrawlRawObjectData(PackedMemorySnapshot packedMemorySnapshot, StartIndices startIndices, BytesAndOffset bytesAndOffset, TypeDescription typeDescription, bool useStaticFields, int indexOfFrom, List <Connection> out_connections, List <PackedManagedObject> out_managedObjects)
{
foreach (var field in TypeTools.AllFieldsOf(typeDescription, _typeDescriptions, useStaticFields ? TypeTools.FieldFindOptions.OnlyStatic : TypeTools.FieldFindOptions.OnlyInstance))
{
if (field.typeIndex == typeDescription.typeIndex && typeDescription.isValueType)
{
//this happens in System.Single, which is a weird type that has a field of its own type.
continue;
}
if (field.offset == -1)
{
//this is how we encode TLS fields. todo: actually treat TLS fields as roots
continue;
}
var fieldType = packedMemorySnapshot.typeDescriptions[field.typeIndex];
var fieldLocation = bytesAndOffset.Add(field.offset - (useStaticFields ? 0 : _virtualMachineInformation.objectHeaderSize));
if (fieldType.isValueType)
{
CrawlRawObjectData(packedMemorySnapshot, startIndices, fieldLocation, fieldType, false, indexOfFrom, out_connections, out_managedObjects);
continue;
}
//temporary workaround for a bug in 5.3b4 and earlier where we would get literals returned as fields with offset 0. soon we'll be able to remove this code.
bool gotException = false;
try {
fieldLocation.ReadPointer();
} catch (ArgumentException) {
UnityEngine.Debug.LogWarningFormat("Skipping field {0} on type {1}", field.name, typeDescription.name);
UnityEngine.Debug.LogWarningFormat("FieldType.name: {0}", fieldType.name);
gotException = true;
}
if (!gotException)
{
CrawlPointer(packedMemorySnapshot, startIndices, fieldLocation.ReadPointer(), indexOfFrom, out_connections, out_managedObjects);
}
}
}
public PackedCrawlerData Crawl(PackedMemorySnapshot input)
{
UnityEditor.EditorUtility.DisplayProgressBar("Crawl", "init", 0);
_typeInfoToTypeDescription = input.typeDescriptions.ToDictionary(td => td.typeInfoAddress, td => td);
_virtualMachineInformation = input.virtualMachineInformation;
_typeDescriptions = input.typeDescriptions;
_instanceFields = new FieldDescription[_typeDescriptions.Length][];
_staticFields = new FieldDescription[_typeDescriptions.Length][];
foreach (var type in _typeDescriptions)
{
_instanceFields[type.typeIndex] = TypeTools.AllFieldsOf(type, _typeDescriptions, TypeTools.FieldFindOptions.OnlyInstance).ToArray();
_staticFields[type.typeIndex] = TypeTools.AllFieldsOf(type, _typeDescriptions, TypeTools.FieldFindOptions.OnlyStatic).ToArray();
}
UnityEditor.EditorUtility.DisplayProgressBar("Crawl", "adding connections", 0.1f);
var result = new PackedCrawlerData(input);
var managedObjects = new List <PackedManagedObject>(result.startIndices.OfFirstManagedObject * 3);
var connections = new List <Connection>(managedObjects.Capacity * 3);
//we will be adding a lot of connections, but the input format also already had connections. (nativeobject->nativeobject and nativeobject->gchandle). we'll add ours to the ones already there.
connections.AddRange(input.connections);
UnityEditor.EditorUtility.DisplayProgressBar("Crawl", "adding thing to profile", 0.2f);
Stack <ThingToProfile> thingsToProfile = new Stack <ThingToProfile>();
for (int i = 0; i < input.gcHandles.Length; ++i)
{
thingsToProfile.Push(new ThingToProfile(input.gcHandles[i].target, result.startIndices.OfFirstGCHandle + i));
}
for (int i = 0; i < result.typesWithStaticFields.Length; i++)
{
var typeDescription = result.typesWithStaticFields[i];
thingsToProfile.Push(new ThingToProfile(typeDescription, new BytesAndOffset {
bytes = typeDescription.staticFieldBytes, offset = 0, pointerSize = _virtualMachineInformation.pointerSize
}, true, result.startIndices.OfFirstStaticFields + i));
}
UnityEditor.EditorUtility.DisplayProgressBar("Crawl", "crawlpointer and crawlrawobjectdata", 0.3f);
int totalCount = thingsToProfile.Count;
while (thingsToProfile.Count > 0)
{
var thingToProfile = thingsToProfile.Pop();
if (thingToProfile.type == PointerType.Reference)
{
CrawlPointerNonRecursive(input, result.startIndices, thingToProfile.objectPointer, thingToProfile.indexOfFrom, connections, managedObjects, thingsToProfile);
}
else
{
CrawlRawObjectDataNonRecursive(input, result.startIndices, thingToProfile.bytesAndOffset, thingToProfile.typeDescription, thingToProfile.useStaticFields, thingToProfile.indexOfFrom, connections, managedObjects, thingsToProfile);
}
int leftCount = thingsToProfile.Count;
if (leftCount % 5 == 0 && UnityEditor.EditorUtility.DisplayCancelableProgressBar("Crawl", string.Format("crawlpointer and crawlrawobjectdata (left:{0}/initial:{1})", leftCount, totalCount), 0.3f + 0.5f * (totalCount - (leftCount > 0 ? leftCount : 0)) / totalCount))
{
break;
}
}
UnityEditor.EditorUtility.DisplayProgressBar("Crawl", "composing result", 0.8f);
result.managedObjects = managedObjects.ToArray();
connections.AddRange(AddManagedToNativeConnectionsAndRestoreObjectHeaders(input, result.startIndices, result));
result.connections = connections.ToArray();
UnityEditor.EditorUtility.DisplayProgressBar("Crawl", "finish.", 1.0f);
UnityEditor.EditorUtility.ClearProgressBar();
return(result);
}