1 files changed, 49 insertions, 0 deletions
diff --git a/extern/draco/draco/src/draco/core/cycle_timer.cc b/extern/draco/draco/src/draco/core/cycle_timer.cc
new file mode 100644
index 00000000000..94b4b28b2f9
--- /dev/null
+++ b/extern/draco/draco/src/draco/core/cycle_timer.cc
@@ -0,0 +1,49 @@
+// Copyright 2016 The Draco Authors.
+//
+// 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 "draco/core/cycle_timer.h"
+
+namespace draco {
+void DracoTimer::Start() {
+#ifdef _WIN32
+  QueryPerformanceCounter(&tv_start);
+#else
+  gettimeofday(&tv_start, nullptr);
+#endif
+}
+
+void DracoTimer::Stop() {
+#ifdef _WIN32
+  QueryPerformanceCounter(&tv_end);
+#else
+  gettimeofday(&tv_end, nullptr);
+#endif
+}
+
+int64_t DracoTimer::GetInMs() {
+#ifdef _WIN32
+  LARGE_INTEGER elapsed = {0};
+  elapsed.QuadPart = tv_end.QuadPart - tv_start.QuadPart;
+
+  LARGE_INTEGER frequency = {0};
+  QueryPerformanceFrequency(&frequency);
+  return elapsed.QuadPart * 1000 / frequency.QuadPart;
+#else
+  const int64_t seconds = (tv_end.tv_sec - tv_start.tv_sec) * 1000;
+  const int64_t milliseconds = (tv_end.tv_usec - tv_start.tv_usec) / 1000;
+  return seconds + milliseconds;
+#endif
+}
+
+}  // namespace draco