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diff --git a/src/mesh/assimp-master/include/assimp/Profiler.h b/src/mesh/assimp-master/include/assimp/Profiler.h
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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file Profiler.h
+ *  @brief Utility to measure the respective runtime of each import step
+ */
+#pragma once
+#ifndef AI_INCLUDED_PROFILER_H
+#define AI_INCLUDED_PROFILER_H
+
+#ifdef __GNUC__
+#   pragma GCC system_header
+#endif
+
+#include <chrono>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/TinyFormatter.h>
+
+#include <map>
+
+namespace Assimp {
+namespace Profiling {
+
+using namespace Formatter;
+
+// ------------------------------------------------------------------------------------------------
+/** Simple wrapper around boost::timer to simplify reporting. Timings are automatically
+ *  dumped to the log file.
+ */
+class Profiler {
+public:
+    Profiler() {
+        // empty
+    }
+
+
+    /** Start a named timer */
+    void BeginRegion(const std::string& region) {
+        regions[region] = std::chrono::system_clock::now();
+        ASSIMP_LOG_DEBUG("START `",region,"`");
+    }
+
+
+    /** End a specific named timer and write its end time to the log */
+    void EndRegion(const std::string& region) {
+        RegionMap::const_iterator it = regions.find(region);
+        if (it == regions.end()) {
+            return;
+        }
+
+        std::chrono::duration<double> elapsedSeconds = std::chrono::system_clock::now() - regions[region];
+        ASSIMP_LOG_DEBUG("END   `",region,"`, dt= ", elapsedSeconds.count()," s");
+    }
+
+private:
+    typedef std::map<std::string,std::chrono::time_point<std::chrono::system_clock>> RegionMap;
+    RegionMap regions;
+};
+
+}
+}
+
+#endif // AI_INCLUDED_PROFILER_H
+