Timer: Add a timer for code-benchmarking with RAII

Closes #555

src/shared/Util/CodeBench.cpp

@@ -0,0 +1,27 @@
+/*
+ * This file is part of the CMaNGOS Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "CodeBench.h"
+#include "Log/Log.h"
+
+ChronoTimeTracker::~ChronoTimeTracker()
+{
+    std::chrono::nanoseconds elapsed = elapsedNanos();
+    sLog.outError("%s: time elapsed: %ldns, %ldµs, %ldms, %lds",
+        m_name.c_str(), nanos(elapsed).count(), micros(elapsed).count(), millis(elapsed).count(), secs(elapsed).count());
+}

src/shared/Util/CodeBench.h

@@ -0,0 +1,53 @@
+/*
+ * This file is part of the CMaNGOS Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef MANGOS_TIMER_H
+#define MANGOS_TIMER_H
+
+struct ChronoTimeTracker
+{
+    public:
+        ChronoTimeTracker() : m_startTime(std::chrono::steady_clock::now()), m_name("Unnamed Timer") {}
+        ChronoTimeTracker(std::string name) : m_startTime(std::chrono::steady_clock::now()), m_name(name) {}
+        ~ChronoTimeTracker();
+        std::chrono::seconds elapsedSeconds()
+        {
+            return std::chrono::duration_cast<std::chrono::seconds>(std::chrono::steady_clock::now() - m_startTime);
+        }
+        std::chrono::milliseconds elapsedMillis()
+        {
+            return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::steady_clock::now() - m_startTime);
+        }
+        std::chrono::microseconds elapsedMicros()
+        {
+            return std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - m_startTime);
+        }
+        std::chrono::nanoseconds elapsedNanos()
+        {
+            return std::chrono::steady_clock::now() - m_startTime;
+        }
+    private:
+        std::chrono::time_point<std::chrono::steady_clock, std::chrono::nanoseconds> m_startTime;
+        std::string m_name;
+        inline constexpr std::chrono::nanoseconds nanos(std::chrono::nanoseconds nanos) { return nanos; }
+        inline constexpr std::chrono::microseconds micros(std::chrono::nanoseconds nanos) { return std::chrono::duration_cast<std::chrono::microseconds>(nanos); }
+        inline constexpr std::chrono::milliseconds millis(std::chrono::nanoseconds nanos) { return std::chrono::duration_cast<std::chrono::milliseconds>(nanos); }
+        inline constexpr std::chrono::seconds secs(std::chrono::nanoseconds nanos) { return std::chrono::duration_cast<std::chrono::seconds>(nanos); }
+};
+
+#endif