add csrc code

csrc/fastdeploy/utils/perf.h

@@ -0,0 +1,49 @@
+// Copyright (c) 2022 PaddlePaddle Authors. 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 "fastdeploy/utils/utils.h"
+#include <chrono> // NOLINT
+
+namespace fastdeploy {
+
+class FASTDEPLOY_DECL TimeCounter {
+ public:
+  void Start() { begin_ = std::chrono::system_clock::now(); }
+
+  void End() { end_ = std::chrono::system_clock::now(); }
+
+  double Duration() {
+    auto duration =
+        std::chrono::duration_cast<std::chrono::microseconds>(end_ - begin_);
+    return static_cast<double>(duration.count()) *
+           std::chrono::microseconds::period::num /
+           std::chrono::microseconds::period::den;
+  }
+
+  void PrintInfo(const std::string& prefix = "TimeCounter: ",
+                 bool print_out = true) {
+    if (!print_out) {
+      return;
+    }
+    FDLogger() << prefix << " duration = " << Duration() << "s." << std::endl;
+  }
+
+ private:
+  std::chrono::time_point<std::chrono::system_clock> begin_;
+  std::chrono::time_point<std::chrono::system_clock> end_;
+};
+
+} // namespace fastdeploy