/// <summary>
/// Register all native functions with managed code
/// </summary>
/// <param name="registerFunctionsAddr">The address of the RegisterFunctions method defined in native code</param>
public static void RegisterFunctions(IntPtr registerFunctionsAddr)
{
if (!EntryPoint.Preloaded)
{
string namespaceName = typeof(NativeFunctions).Namespace;
foreach (Type type in Assembly.GetExecutingAssembly().GetTypes())
{
if (type.IsClass && type.IsAbstract && type.IsSealed && type.Name.StartsWith("Native_") && type.Namespace == namespaceName)
{
// Native_FName -> Export_FName_XXXXX
string nativeFunctionPrefix = "Export" + type.Name.Replace("Native", string.Empty) + "_";
foreach (FieldInfo field in type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static))
{
if (field.IsStatic && field.FieldType.IsSubclassOf(typeof(Delegate)))
{
functions.Add(nativeFunctionPrefix + field.Name, field);
}
}
}
}
// Call the native RegisterFunctions method with our managed RegisterFunction as the callback
Del_RegisterFunctions registerFunctions = (Del_RegisterFunctions)Marshal.GetDelegateForFunctionPointer(
registerFunctionsAddr, typeof(Del_RegisterFunctions));
registerFunctions(Marshal.GetFunctionPointerForDelegate(registerFunction));
// Highest (these may be called from a thread other than the game thread, don't access UObject methods)
FBuild.OnNativeFunctionsRegistered();
FGlobals.OnNativeFunctionsRegistered();
Classes.OnNativeFunctionsRegistered();
BoolMarshaler.OnNativeFunctionsRegistered();
FStringMarshaler.OnNativeFunctionsRegistered();
InputCore.FKey.OnNativeFunctionsRegistered();
FFrame.OnNativeFunctionsRegistered();
// Validate native struct sizes match the managed struct sizes before running any handlers
// NOTE: This MUST come after FStringMarshaler.OnNativeFunctionsRegistered as this requires TCHAR size
StructValidator.ValidateStructs();
}
if (!EntryPoint.Preloading)
{
Debug.Assert(FThreading.IsInGameThread(), "Load/hotreload should be on the game thread");
// Highest = Used for initializing very important data required by other functions.
// VeryHigh = Used for initializing data before UObject classes are loaded.
// High = This is when UObject classes are loaded. Don't access UObjects at this or any higher priority.
// Medium = UObject classes are loaded and available to use at this priority.
// If GEngine is null we need to bind OnPostEngineInit to load anything which requires GEngine
if (FGlobals.GEngine == IntPtr.Zero)
{
FCoreDelegates.OnPostEngineInit.Bind(OnPostEngineInit);
}
// Highest
GCHelper.OnNativeFunctionsRegistered();
FMessage.OnNativeFunctionsRegistered();
Engine.FTimerManagerCache.OnNativeFunctionsRegistered();
WorldTimeHelper.OnNativeFunctionsRegistered();
if (FGlobals.GEngine != IntPtr.Zero)
{
// Needs GEngine for binding delegates
StaticVarManager.OnNativeFunctionsRegistered();
Coroutine.OnNativeFunctionsRegistered();
}
// VeryHigh
NativeReflection.OnNativeFunctionsRegistered();// Requires Classes to be initialized
// High
OnNativeFunctionsRegistered();
// Low
EngineLoop.OnNativeFunctionsRegistered();
// Lowest
CodeGenerator.OnNativeFunctionsRegistered();
#if WITH_USHARP_TESTS
Tests.Tests.OnNativeFunctionsRegistered();
#endif
}
}
/// <summary>
/// Callback where GEngine is initialized and is safe to use
/// </summary>
private static void OnPostEngineInit()
{
StaticVarManager.OnNativeFunctionsRegistered();
Coroutine.OnNativeFunctionsRegistered();
}