Measure total time for NavMesh build from first pop

components/detournavigator/asyncnavmeshupdater.cpp

@@ -105,6 +105,8 @@ namespace DetourNavigator
 
         const auto start = std::chrono::steady_clock::now();
 
+        setFirstStart(start);
+
         const auto recastMesh = getRecastMesh();
 
         const auto status = updateNavMesh(job.mAgentHalfExtents, *recastMesh, job.mChangedTile, mSettings,
@@ -117,7 +119,8 @@ namespace DetourNavigator
         using FloatMs = std::chrono::duration<float, std::milli>;
 
         log("cache updated for agent=", job.mAgentHalfExtents, " status=", status,
-            " time=", std::chrono::duration_cast<FloatMs>(finish - start).count(), "ms");
+            " time=", std::chrono::duration_cast<FloatMs>(finish - start).count(), "ms",
+            " total_time=", std::chrono::duration_cast<FloatMs>(finish - getFirstStart()).count(), "ms");
     }
 
     boost::optional<AsyncNavMeshUpdater::Job> AsyncNavMeshUpdater::getNextJob()
@@ -168,4 +171,17 @@ namespace DetourNavigator
         const std::lock_guard<std::mutex> lock(mRecastMeshMutex);
         mRecastMesh = value;
     }
+
+    std::chrono::steady_clock::time_point AsyncNavMeshUpdater::getFirstStart()
+    {
+        const std::lock_guard<std::mutex> lock(mFirstStartMutex);
+        return *mFirstStart;
+    }
+
+    void AsyncNavMeshUpdater::setFirstStart(const std::chrono::steady_clock::time_point& value)
+    {
+        const std::lock_guard<std::mutex> lock(mFirstStartMutex);
+        if (!mFirstStart)
+            mFirstStart = value;
+    }
 }

components/detournavigator/asyncnavmeshupdater.hpp

@@ -10,8 +10,8 @@
 #include <boost/optional.hpp>
 
 #include <atomic>
+#include <chrono>
 #include <condition_variable>
-#include <map>
 #include <memory>
 #include <mutex>
 #include <queue>
@@ -58,6 +58,8 @@ namespace DetourNavigator
         Jobs mJobs;
         std::mutex mRecastMeshMutex;
         std::shared_ptr<RecastMesh> mRecastMesh;
+        std::mutex mFirstStartMutex;
+        boost::optional<std::chrono::steady_clock::time_point> mFirstStart;
         std::thread mThread;
 
         void process() throw();
@@ -73,6 +75,10 @@ namespace DetourNavigator
         std::shared_ptr<RecastMesh> getRecastMesh();
 
         void setRecastMesh(const std::shared_ptr<RecastMesh>& value);
+
+        std::chrono::steady_clock::time_point getFirstStart();
+
+        void setFirstStart(const std::chrono::steady_clock::time_point& value);
     };
 }