keep the parts needed for moe_kernels (#3218)

sgl-kernel/3rdparty/tensorrt_llm/common/tllmException.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2022-2024, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <array>
+#include <cstddef>
+#include <stdexcept>
+#include <string>
+
+#define NEW_TLLM_EXCEPTION(...)                                                                                        \
+    tensorrt_llm::common::TllmException(__FILE__, __LINE__, tensorrt_llm::common::fmtstr(__VA_ARGS__))
+
+namespace tensorrt_llm::common
+{
+
+class TllmException : public std::runtime_error
+{
+public:
+    static auto constexpr MAX_FRAMES = 128;
+
+    explicit TllmException(char const* file, std::size_t line, std::string const& msg);
+
+    ~TllmException() noexcept override;
+
+    [[nodiscard]] std::string getTrace() const;
+
+    static std::string demangle(char const* name);
+
+private:
+    std::array<void*, MAX_FRAMES> mCallstack{};
+    int mNbFrames;
+};
+
+} // namespace tensorrt_llm::common