OutOfMemory error while saving

[TheMax2000]

I got this error in the console while trying to save a scene from GILES.
I have a (single) kinda complex prefab, but all submeshes should be fine to serialize.
Is there a way I could work around this error?
I tried to build a 64bits version, but the same error appears.

OutOfMemoryException: Out of memory
System.Text.StringBuilder.InternalEnsureCapacity (Int32 size) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Text/StringBuilder.cs:725)
System.Text.StringBuilder.Append (System.Char[] value, Int32 startIndex, Int32 charCount) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Text/StringBuilder.cs:480)
System.IO.StringWriter.Write (System.Char[] buffer, Int32 index, Int32 count) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.IO/StringWriter.cs:142)
Newtonsoft.Json.JsonTextWriter.WriteIndent ()
Newtonsoft.Json.JsonWriter.AutoComplete (JsonToken tokenBeingWritten)
Newtonsoft.Json.JsonWriter.InternalWritePropertyName (System.String name)
Newtonsoft.Json.JsonTextWriter.WritePropertyName (System.String name)
Newtonsoft.Json.Linq.JProperty.WriteTo (Newtonsoft.Json.JsonWriter writer, Newtonsoft.Json.JsonConverter[] converters)
Newtonsoft.Json.Linq.JObject.WriteTo (Newtonsoft.Json.JsonWriter writer, Newtonsoft.Json.JsonConverter[] converters)
Newtonsoft.Json.Linq.JArray.WriteTo (Newtonsoft.Json.JsonWriter writer, Newtonsoft.Json.JsonConverter[] converters)
Newtonsoft.Json.Linq.JProperty.WriteTo (Newtonsoft.Json.JsonWriter writer, Newtonsoft.Json.JsonConverter[] converters)
Newtonsoft.Json.Linq.JObject.WriteTo (Newtonsoft.Json.JsonWriter writer, Newtonsoft.Json.JsonConverter[] converters)
GILES.Serialization.pb_MeshConverter.WriteObjectJson (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.JsonSerializer serializer) (at Assets/GILES/Code/Classes/Serialization/Converters/pb_MeshConverter.cs:47)
GILES.Serialization.pb_UnityTypeConverter`1[T].WriteJson (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.JsonSerializer serializer) (at Assets/GILES/Code/Classes/Serialization/Converters/pb_UnityTypeConverter.cs:29)
Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeConvertable (Newtonsoft.Json.JsonWriter writer, Newtonsoft.Json.JsonConverter converter, System.Object value, Newtonsoft.Json.Serialization.JsonContract contract, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty)
Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContract valueContract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty)
Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeDictionary (Newtonsoft.Json.JsonWriter writer, IDictionary values, Newtonsoft.Json.Serialization.JsonDictionaryContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty)
UnityEngine.EventSystems.EventSystem:Update()

[karl-]

I'd guess that instead of referencing the mesh GILES is trying to write all the vertex & tri data. How big (vertex/tri count-wise) is this mesh? If you replace it with a lower poly version does this error still occur?

[TheMax2000]

If I delete manually (in editor, while running) a lot of subobjects of the prefab it does save.
Since the prefab is quite complex, I'll take the time to analyze what subobject(s) is causing the problem. I have a few 65k vertices objects that I could get rid of, or simplify at least...

However, is there a way to make GILES writting in binary format (which should be quite smaller) or avoiding to write all the vertex & triangles data?

[karl-]

It should be avoiding writing the mesh data currently; if it's doing that now that is a bug.

On writing binary, that would be a good feature request.

[TheMax2000]

It seems it writes the mesh data for all children of the prefab.
I'm not a pro of Unity, but I'll give a look to the code to check if I can find something...

[TheMax2000]

Ok, it seems that all the children information is not needed. So I can have a 3kb file that loads correctly the full object, instead of a >500MB (deleting half of the children). I'm still trying to figure out why though... it should not serialize those children at all.

[TheMax2000]

I did a workaround fix: I do not generate children if it's a resource. However I don't think it's the ideal solution, but since I don't need any resource's child, I think it will work for me for now.

pb_SceneNode.cs from ln 90

// avoid calling constructor which automatically rebuilds the matrix
 transform = new pb_Transform();
 transform.SetTRS(root.transform);

 children = new List<pb_SceneNode>();
 if (metadata.assetType != AssetType.Resource)
 {               
      foreach (Transform t in root.transform)
       {
            if (!t.gameObject.activeSelf)
                 continue;

            children.Add(new pb_SceneNode(t.gameObject));
      }
 }