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- restored ZDoom 2.8.1's version of FindClassTentative which just modified the existing class instead of replacing it and having to run a costly and volatile PointerSubstitution call to replace all pointers to the old one.

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This commit is contained in:
Christoph Oelckers 2017-02-08 19:52:33 +01:00
parent 17a2666bd4
commit 9499c22dfe
2 changed files with 18 additions and 43 deletions
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56
src/dobjtype.cpp
View file

@ -2029,7 +2029,7 @@ void PDynArray::SetDefaultValue(void *base, unsigned offset, TArray<FTypeAndOffs
void PDynArray::SetPointerArray(void *base, unsigned offset, TArray<size_t> *special) const
{
if (ElementType->IsKindOf(RUNTIME_CLASS(PPointer)) && static_cast<PPointer*>(ElementType)->PointedType->IsKindOf(RUNTIME_CLASS(PClass)))
if (ElementType->IsKindOf(RUNTIME_CLASS(PPointer)) && !ElementType->IsKindOf(RUNTIME_CLASS(PClassPointer)) && static_cast<PPointer*>(ElementType)->PointedType->IsKindOf(RUNTIME_CLASS(PClass)))
{
// Add to the list of pointer arrays for this class.
special->Push(offset);
@ -3238,48 +3238,31 @@ void PClass::DeriveData(PClass *newclass)
PClass *PClass::CreateDerivedClass(FName name, unsigned int size)
{
assert (size >= Size);
assert(size >= Size);
PClass *type;
bool notnew;
size_t bucket;
PClass *existclass = static_cast<PClass *>(TypeTable.FindType(RUNTIME_CLASS(PClass), /*FIXME:Outer*/0, name, &bucket));
const PClass *existclass = FindClass(name);
// This is a placeholder so fill it in
if (existclass != nullptr)
if (existclass != NULL && existclass->Size == (unsigned)-1)
{
if (existclass->Size == TentativeClass)
type = const_cast<PClass*>(existclass);
if (!IsDescendantOf(type->ParentClass))
{
if (!IsDescendantOf(existclass->ParentClass))
{
I_Error("%s must inherit from %s but doesn't.", name.GetChars(), existclass->ParentClass->TypeName.GetChars());
}
if (size == TentativeClass)
{
// see if we can reuse the existing class. This is only possible if the inheritance is identical. Otherwise it needs to be replaced.
if (this == existclass->ParentClass)
{
existclass->ObjectFlags &= OF_Transient;
return existclass;
}
}
notnew = true;
}
else
{
// a different class with the same name already exists. Let the calling code deal with this.
return nullptr;
I_Error("%s must inherit from %s but doesn't.", name.GetChars(), type->ParentClass->TypeName.GetChars());
}
DPrintf(DMSG_SPAMMY, "Defining placeholder class %s\n", name.GetChars());
notnew = true;
}
else
{
type = static_cast<PClass *>(GetClass()->CreateNew());
notnew = false;
}
// Create a new type object of the same type as us. (We may be a derived class of PClass.)
type = static_cast<PClass *>(GetClass()->CreateNew());
type->TypeName = name;
type->bRuntimeClass = true;
Derive(type, name);
type->Size = size;
if (size != TentativeClass)
@ -3288,22 +3271,13 @@ PClass *PClass::CreateDerivedClass(FName name, unsigned int size)
type->Virtuals = Virtuals;
DeriveData(type);
}
else
type->ObjectFlags &= OF_Transient;
if (!notnew)
{
type->InsertIntoHash();
}
else
{
TypeTable.ReplaceType(type, existclass, bucket);
StaticPointerSubstitution(existclass, type, true); // replace the old one, also in the actor defaults.
// Delete the old class from the class lists, both the full one and the actor list.
auto index = PClassActor::AllActorClasses.Find(static_cast<PClassActor*>(existclass));
if (index < PClassActor::AllActorClasses.Size()) PClassActor::AllActorClasses.Delete(index);
index = PClass::AllClasses.Find(existclass);
if (index < PClass::AllClasses.Size()) PClass::AllClasses.Delete(index);
// Now we can destroy the old class as nothing should reference it anymore
existclass->Destroy();
}
return type;
}

5
src/scripting/thingdef.cpp
View file

@ -396,8 +396,9 @@ void LoadActors()
{
Printf(TEXTCOLOR_ORANGE "Class %s referenced but not defined\n", ti->TypeName.GetChars());
FScriptPosition::WarnCounter++;
DObject::StaticPointerSubstitution(ti, nullptr);
PClassActor::AllActorClasses.Delete(i);
// the class must be rendered harmless so that it won't cause problems.
ti->ParentClass = RUNTIME_CLASS(AActor);
ti->Size = sizeof(AActor);
}
else
{