add tensorrt_llm common and cutlass_extensions as 3rdparty (#3216)

Co-authored-by: BBuf <35585791+BBuf@users.noreply.github.com>

sgl-kernel/3rdparty/tensorrt_llm/common/timestampUtils.cpp

@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+#include <chrono>
+#include <iomanip>
+#include <sstream>
+
+#include "tensorrt_llm/common/timestampUtils.h"
+
+namespace tensorrt_llm::common
+{
+
+std::string getCurrentTimestamp()
+{
+    auto now = std::chrono::system_clock::now();
+    auto now_t = std::chrono::system_clock::to_time_t(now);
+    auto tm = *std::localtime(&now_t);
+
+    auto epoch_to_now = now.time_since_epoch();
+    auto seconds = std::chrono::duration_cast<std::chrono::seconds>(epoch_to_now);
+    auto us = std::chrono::duration_cast<std::chrono::microseconds>(epoch_to_now - seconds);
+
+    std::ostringstream stream;
+    stream << std::put_time(&tm, "%m-%d-%Y %H:%M:%S");
+    stream << "." << std::setfill('0') << std::setw(6) << us.count();
+    return stream.str();
+}
+
+} // namespace tensorrt_llm::common