/**
* Captures the current stack and updates stack tracking information.
* optionally stores a user data pointer that the tracker will take ownership of and delete upon reset
* you must allocate the memory with FMemory::Malloc()
*/
void FStackTracker::CaptureStackTrace(int32 EntriesToIgnore /*=2*/, void* UserData /*=NULL*/)
{
// Avoid re-rentrancy as the code uses TArray/TMap.
if( !bAvoidCapturing && bIsEnabled )
{
// Scoped true/ false.
bAvoidCapturing = true;
// Capture callstack and create CRC.
uint64* FullBackTrace = NULL;
FullBackTrace = static_cast<uint64*>(FMemory_Alloca((MAX_BACKTRACE_DEPTH + EntriesToIgnore) * sizeof(uint64)));
FPlatformStackWalk::CaptureStackBackTrace( FullBackTrace, MAX_BACKTRACE_DEPTH + EntriesToIgnore );
CA_ASSUME(FullBackTrace);
// Skip first NUM_ENTRIES_TO_SKIP entries as they are inside this code
uint64* BackTrace = &FullBackTrace[EntriesToIgnore];
uint32 CRC = FCrc::MemCrc_DEPRECATED( BackTrace, MAX_BACKTRACE_DEPTH * sizeof(uint64) );
// Use index if found
int32* IndexPtr = CRCToCallStackIndexMap.Find( CRC );
if( IndexPtr )
{
// Increase stack count for existing callstack.
CallStacks[*IndexPtr].StackCount++;
if (UpdateFn)
{
UpdateFn(CallStacks[*IndexPtr], UserData);
}
//We can delete this since the user gives ownership at the beginning of this call
//and had a chance to update their data inside the above callback
if (UserData)
{
FMemory::Free(UserData);
}
}
// Encountered new call stack, add to array and set index mapping.
else
{
// Add to array and set mapping for future use.
int32 Index = CallStacks.AddUninitialized();
CRCToCallStackIndexMap.Add( CRC, Index );
// Fill in callstack and count.
FCallStack& CallStack = CallStacks[Index];
FMemory::Memcpy( CallStack.Addresses, BackTrace, sizeof(uint64) * MAX_BACKTRACE_DEPTH );
CallStack.StackCount = 1;
CallStack.UserData = UserData;
}
// We're done capturing.
bAvoidCapturing = false;
}
}
void FJavaScriptHelper::ExecuteHook(UObject* Receiver, const FString& HookName, ICefRuntimeVariantList* Arguments)
{
UFunction* Function = Receiver->GetClass()->FindFunctionByName(*HookName);
if (!Function)
{
UE_LOG(RadiantUILog, Error, TEXT("JavaScript Hook Function '%s' was not found"), *HookName);
return;
}
int ArgumentMismatch = -1;
if (Arguments)
{
if (Arguments->GetSize() != Function->NumParms)
{
UE_LOG(RadiantUILog, Error, TEXT("JavaScript Hook Function '%s' on Object '%s' was called with the wrong number arguments! The called function(called from JS) desires %i arguments, but the defined(in this game) has %i arguments."), *HookName, *Receiver->GetPathName(), Arguments->GetSize(), Function->NumParms);
return;
}
void* Parms = (uint8*)FMemory_Alloca(Function->ParmsSize);
FMemory::Memzero(Parms, Function->ParmsSize);
int ArgumentIndex = 0;
for (TFieldIterator<UProperty> It(Function); It && (It->PropertyFlags & (CPF_Parm | CPF_ReturnParm)) == CPF_Parm; ++It, ++ArgumentIndex)
{
if (!StoreFunctionParameter(HookName, Parms, *It, Arguments->GetValue(ArgumentIndex), ArgumentIndex))
{
return;
}
}
Receiver->ProcessEvent(Function, Parms);
}
else
{
if (Function->NumParms == 0)
{
Receiver->ProcessEvent(Function, nullptr);
}
else
{
ArgumentMismatch = 0;
}
}
if (ArgumentMismatch >= 0)
{
UE_LOG(RadiantUILog, Error, TEXT("JavaScript Hook Function '%s' argument %d type mismatch"), *HookName, ArgumentMismatch);
}
}
void FGenericPlatformMemory::Memswap( void* Ptr1, void* Ptr2, SIZE_T Size )
{
if (Ptr1 != Ptr2)
{
// check that Ptr1 and Ptr2 do not overlap in undefined ways
checkf(reinterpret_cast<uint8 *>(Ptr1)+Size <= reinterpret_cast<uint8 *>(Ptr2) || reinterpret_cast<uint8 *>(Ptr2)+Size <= reinterpret_cast<uint8 *>(Ptr1),
TEXT("Pointers given to FPlatformMemory::Memswap() point to overlapping memory areas, results are undefined."));
void* Temp = FMemory_Alloca(Size);
FPlatformMemory::Memcpy( Temp, Ptr1, Size );
FPlatformMemory::Memcpy( Ptr1, Ptr2, Size );
FPlatformMemory::Memcpy( Ptr2, Temp, Size );
}
}
PyObject *py_ue_skeletal_mesh_get_raw_indices(ue_PyUObject *self, PyObject * args)
{
ue_py_check(self);
int lod_index = 0;
if (!PyArg_ParseTuple(args, "|i:skeletal_mesh_get_raw_indices", &lod_index))
return nullptr;
USkeletalMesh *mesh = ue_py_check_type<USkeletalMesh>(self);
if (!mesh)
return PyErr_Format(PyExc_Exception, "uobject is not a USkeletalMesh");
#if ENGINE_MINOR_VERSION < 19
FSkeletalMeshResource *resource = mesh->GetImportedResource();
#else
FSkeletalMeshModel *resource = mesh->GetImportedModel();
#endif
if (lod_index < 0 || lod_index >= resource->LODModels.Num())
return PyErr_Format(PyExc_Exception, "invalid LOD index, must be between 0 and %d", resource->LODModels.Num() - 1);
#if ENGINE_MINOR_VERSION < 19
FStaticLODModel &model = resource->LODModels[lod_index];
#else
FSkeletalMeshLODModel &model = resource->LODModels[lod_index];
#endif
PyObject *py_list = PyList_New(0);
int32 *raw_indices = (int32 *)model.RawPointIndices.Lock(LOCK_READ_ONLY);
int32 *indices = (int32 *)FMemory_Alloca(model.RawPointIndices.GetBulkDataSize());
FMemory::Memcpy(indices, raw_indices, model.RawPointIndices.GetBulkDataSize());
model.RawPointIndices.Unlock();
for (int32 index = 0; index < model.RawPointIndices.GetBulkDataSize() / sizeof(int32); index++)
{
PyList_Append(py_list, PyLong_FromLong(indices[index]));
}
return py_list;
}
void UPythonFunction::CallPythonCallable(FFrame& Stack, RESULT_DECL)
{
FScopePythonGIL gil;
UPythonFunction *function = static_cast<UPythonFunction *>(Stack.CurrentNativeFunction);
bool on_error = false;
bool is_static = function->HasAnyFunctionFlags(FUNC_Static);
// count the number of arguments
Py_ssize_t argn = (Stack.Object && !is_static) ? 1 : 0;
TFieldIterator<UProperty> IArgs(function);
for (; IArgs && ((IArgs->PropertyFlags & (CPF_Parm | CPF_ReturnParm)) == CPF_Parm); ++IArgs) {
argn++;
}
#if defined(UEPY_MEMORY_DEBUG)
UE_LOG(LogPython, Warning, TEXT("Initializing %d parameters"), argn);
#endif
PyObject *py_args = PyTuple_New(argn);
if (Stack.Object && !is_static) {
PyObject *py_obj = (PyObject *)ue_get_python_wrapper(Stack.Object);
if (!py_obj) {
unreal_engine_py_log_error();
on_error = true;
}
else {
Py_INCREF(py_obj);
PyTuple_SetItem(py_args, 0, py_obj);
}
}
uint8 *frame = Stack.Locals;
argn = (Stack.Object && !is_static) ? 1 : 0;
// is it a blueprint call ?
if (*Stack.Code == EX_EndFunctionParms) {
for (UProperty *prop = (UProperty *)function->Children; prop; prop = (UProperty *)prop->Next) {
if (prop->PropertyFlags & CPF_ReturnParm)
continue;
if (!on_error) {
PyObject *arg = ue_py_convert_property(prop, (uint8 *)Stack.Locals);
if (!arg) {
unreal_engine_py_log_error();
on_error = true;
}
else {
PyTuple_SetItem(py_args, argn++, arg);
}
}
}
}
else {
//UE_LOG(LogPython, Warning, TEXT("BLUEPRINT CALL"));
frame = (uint8 *)FMemory_Alloca(function->PropertiesSize);
FMemory::Memzero(frame, function->PropertiesSize);
for (UProperty *prop = (UProperty *)function->Children; *Stack.Code != EX_EndFunctionParms; prop = (UProperty *)prop->Next) {
Stack.Step(Stack.Object, prop->ContainerPtrToValuePtr<uint8>(frame));
if (prop->PropertyFlags & CPF_ReturnParm)
continue;
if (!on_error) {
PyObject *arg = ue_py_convert_property(prop, frame);
if (!arg) {
unreal_engine_py_log_error();
on_error = true;
}
else {
PyTuple_SetItem(py_args, argn++, arg);
}
}
}
}
Stack.Code++;
if (on_error || !function->py_callable) {
Py_DECREF(py_args);
return;
}
PyObject *ret = PyObject_CallObject(function->py_callable, py_args);
Py_DECREF(py_args);
if (!ret) {
unreal_engine_py_log_error();
return;
}
// get return value (if required)
UProperty *return_property = function->GetReturnProperty();
if (return_property && function->ReturnValueOffset != MAX_uint16) {
#if defined(UEPY_MEMORY_DEBUG)
UE_LOG(LogPython, Warning, TEXT("FOUND RETURN VALUE"));
#endif
if (ue_py_convert_pyobject(ret, return_property, frame)) {
// copy value to stack result value
FMemory::Memcpy(RESULT_PARAM, frame + function->ReturnValueOffset, return_property->ArrayDim * return_property->ElementSize);
}
else {
UE_LOG(LogPython, Error, TEXT("Invalid return value type for function %s"), *function->GetFName().ToString());
}
}
Py_DECREF(ret);
}
/**
* Captures the current stack and updates stack tracking information.
* optionally stores a user data pointer that the tracker will take ownership of and delete upon reset
* you must allocate the memory with FMemory::Malloc()
*/
void FStackTracker::CaptureStackTrace(int32 EntriesToIgnore, void* UserData, int32 StackLen, bool bLookupStringsForAliasRemoval)
{
// Avoid re-rentrancy as the code uses TArray/TMap.
if( !bAvoidCapturing && bIsEnabled )
{
// Scoped true/ false.
bAvoidCapturing = true;
// Capture callstack and create CRC.
int32 Size = (MAX_BACKTRACE_DEPTH + EntriesToIgnore) * sizeof(uint64);
uint64* FullBackTrace = static_cast<uint64*>(FMemory_Alloca(Size));
FMemory::Memzero(FullBackTrace, Size);
FPlatformStackWalk::CaptureStackBackTrace( FullBackTrace, MAX_BACKTRACE_DEPTH + EntriesToIgnore );
CA_ASSUME(FullBackTrace);
// Skip first NUM_ENTRIES_TO_SKIP entries as they are inside this code
uint64* BackTrace = &FullBackTrace[EntriesToIgnore];
if (StackLen < MAX_BACKTRACE_DEPTH)
{
FMemory::Memzero(BackTrace + StackLen, sizeof(uint64) * (MAX_BACKTRACE_DEPTH - StackLen));
}
if (bLookupStringsForAliasRemoval)
{
for (int32 Index = 0; Index < StackLen; Index++)
{
if (BackTrace[Index])
{
uint64* Existing = AliasMap.Find(BackTrace[Index]);
if (Existing)
{
BackTrace[Index] = *Existing;
}
else
{
ANSICHAR AddressInformation[512];
AddressInformation[0] = 0;
FPlatformStackWalk::ProgramCounterToHumanReadableString( 1, BackTrace[Index], AddressInformation, ARRAY_COUNT(AddressInformation)-1 );
FString Symbol(AddressInformation);
int32 Spot = Symbol.Find(TEXT(" - "));
if (Spot != INDEX_NONE)
{
Symbol = Symbol.RightChop(Spot + 3);
}
Existing = StringAliasMap.Find(Symbol);
if (Existing)
{
AliasMap.Add(BackTrace[Index], *Existing);
BackTrace[Index] = *Existing;
}
else
{
AliasMap.Add(BackTrace[Index], BackTrace[Index]);
StringAliasMap.Add(Symbol, BackTrace[Index]);
}
}
}
}
}
uint32 CRC = FCrc::MemCrc_DEPRECATED( BackTrace, MAX_BACKTRACE_DEPTH * sizeof(uint64) );
// Use index if found
int32* IndexPtr = CRCToCallStackIndexMap.Find( CRC );
if( IndexPtr )
{
// Increase stack count for existing callstack.
CallStacks[*IndexPtr].StackCount++;
if (UpdateFn)
{
UpdateFn(CallStacks[*IndexPtr], UserData);
}
//We can delete this since the user gives ownership at the beginning of this call
//and had a chance to update their data inside the above callback
if (UserData)
{
FMemory::Free(UserData);
}
}
// Encountered new call stack, add to array and set index mapping.
else
{
// Add to array and set mapping for future use.
int32 Index = CallStacks.AddUninitialized();
CRCToCallStackIndexMap.Add( CRC, Index );
// Fill in callstack and count.
FCallStack& CallStack = CallStacks[Index];
FMemory::Memcpy( CallStack.Addresses, BackTrace, sizeof(uint64) * MAX_BACKTRACE_DEPTH );
CallStack.StackCount = 1;
CallStack.UserData = UserData;
}
// We're done capturing.
bAvoidCapturing = false;
}
}
