Add timing facilities.

Timing.cpp

@@ -0,0 +1,29 @@
+#include <chrono>
+
+#include "Timing.hpp"
+
+// https://connect.microsoft.com/VisualStudio/feedback/details/719443
+#ifdef _WIN32
+#  include <windows.h>
+static double s_freq;
+#endif
+
+void InitTiming()
+{
+#ifdef _WIN32
+    uint64 freq;
+    QueryPerformanceFrequency( (LARGE_INTEGER*)&freq );
+    s_freq = 1.0 / freq;
+#endif
+}
+
+uint64 GetTime()
+{
+#ifdef _WIN32
+    uint64 ret;
+    QueryPerformanceCounter( (LARGE_INTEGER*)&ret );
+    return uint64( ret * s_freq * 1000000 );
+#else
+    return std::chrono::time_point_cast<std::chrono::microseconds>( std::chrono::high_resolution_clock::now() ).time_since_epoch().count();
+#endif
+}

Timing.hpp

@@ -0,0 +1,9 @@
+#ifndef __DARKRL__TIMING_HPP__
+#define __DARKRL__TIMING_HPP__
+
+#include "Types.hpp"
+
+void InitTiming();
+uint64 GetTime();
+
+#endif

build/etcpak.vcxproj

@@ -107,6 +107,7 @@
     <ClCompile Include="..\ProcessAlpha.cpp" />
     <ClCompile Include="..\ProcessRGB.cpp" />
     <ClCompile Include="..\Tables.cpp" />
+    <ClCompile Include="..\Timing.cpp" />
     <ClCompile Include="..\zlib\adler32.c" />
     <ClCompile Include="..\zlib\compress.c" />
     <ClCompile Include="..\zlib\crc32.c" />
@@ -142,6 +143,7 @@
     <ClInclude Include="..\ProcessRGB.hpp" />
     <ClInclude Include="..\Semaphore.hpp" />
     <ClInclude Include="..\Tables.hpp" />
+    <ClInclude Include="..\Timing.hpp" />
     <ClInclude Include="..\Types.hpp" />
     <ClInclude Include="..\Vector.hpp" />
     <ClInclude Include="..\zlib\crc32.h" />

build/etcpak.vcxproj.filters

@@ -104,6 +104,7 @@
     <ClCompile Include="..\zlib\inffas8664.c">
       <Filter>zlib</Filter>
     </ClCompile>
+    <ClCompile Include="..\Timing.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\zlib\crc32.h">
@@ -175,6 +176,7 @@
     <ClInclude Include="..\ProcessAlpha.hpp" />
     <ClInclude Include="..\ProcessRGB.hpp" />
     <ClInclude Include="..\ProcessCommon.hpp" />
+    <ClInclude Include="..\Timing.hpp" />
   </ItemGroup>
   <ItemGroup>
     <Object Include="..\zlib\inffasx64.obj">