Show parsing time.

syoyo · syoyo · commit 0389e238472f · 2016-07-01T23:35:39.000+09:00
diff --git a/loader_example.cc b/loader_example.cc
@@ -11,6 +11,89 @@
 #include <sstream>
 #include <fstream>
 
+#ifdef _WIN32
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include <windows.h>
+#include <mmsystem.h>
+#ifdef __cplusplus
+}
+#endif
+#pragma comment(lib, "winmm.lib")
+#else
+#if defined(__unix__) || defined(__APPLE__)
+#include <sys/time.h>
+#else
+#include <ctime>
+#endif
+#endif
+
+class timerutil {
+public:
+#ifdef _WIN32
+  typedef DWORD time_t;
+
+  timerutil() { ::timeBeginPeriod(1); }
+  ~timerutil() { ::timeEndPeriod(1); }
+
+  void start() { t_[0] = ::timeGetTime(); }
+  void end() { t_[1] = ::timeGetTime(); }
+
+  time_t sec() { return (time_t)((t_[1] - t_[0]) / 1000); }
+  time_t msec() { return (time_t)((t_[1] - t_[0])); }
+  time_t usec() { return (time_t)((t_[1] - t_[0]) * 1000); }
+  time_t current() { return ::timeGetTime(); }
+
+#else
+#if defined(__unix__) || defined(__APPLE__)
+  typedef unsigned long int time_t;
+
+  void start() { gettimeofday(tv + 0, &tz); }
+  void end() { gettimeofday(tv + 1, &tz); }
+
+  time_t sec() { return static_cast<time_t>(tv[1].tv_sec - tv[0].tv_sec); }
+  time_t msec() {
+    return this->sec() * 1000 +
+           static_cast<time_t>((tv[1].tv_usec - tv[0].tv_usec) / 1000);
+  }
+  time_t usec() {
+    return this->sec() * 1000000 + static_cast<time_t>(tv[1].tv_usec - tv[0].tv_usec);
+  }
+  time_t current() {
+    struct timeval t;
+    gettimeofday(&t, NULL);
+    return static_cast<time_t>(t.tv_sec * 1000 + t.tv_usec);
+  }
+
+#else // C timer
+  // using namespace std;
+  typedef clock_t time_t;
+
+  void start() { t_[0] = clock(); }
+  void end() { t_[1] = clock(); }
+
+  time_t sec() { return (time_t)((t_[1] - t_[0]) / CLOCKS_PER_SEC); }
+  time_t msec() { return (time_t)((t_[1] - t_[0]) * 1000 / CLOCKS_PER_SEC); }
+  time_t usec() { return (time_t)((t_[1] - t_[0]) * 1000000 / CLOCKS_PER_SEC); }
+  time_t current() { return (time_t)clock(); }
+
+#endif
+#endif
+
+private:
+#ifdef _WIN32
+  DWORD t_[2];
+#else
+#if defined(__unix__) || defined(__APPLE__)
+  struct timeval tv[2];
+  struct timezone tz;
+#else
+  time_t t_[2];
+#endif
+#endif
+};
+
 static void PrintInfo(const tinyobj::attrib_t &attrib, const std::vector<tinyobj::shape_t>& shapes, const std::vector<tinyobj::material_t>& materials)
 {
   std::cout << "# of vertices  : " << (attrib.vertices.size() / 3) << std::endl;
@@ -55,7 +138,7 @@ static void PrintInfo(const tinyobj::attrib_t &attrib, const std::vector<tinyobj
     for (size_t f = 0; f < shapes[i].mesh.num_face_vertices.size(); f++) {
 		size_t fnum = shapes[i].mesh.num_face_vertices[f];
 
-		printf("  face[%ld].fnum = %d\n", static_cast<long>(f), static_cast<unsigned long>(fnum));
+		printf("  face[%ld].fnum = %ld\n", static_cast<long>(f), static_cast<unsigned long>(fnum));
 
 		// For each vertex in the face
 		for (size_t v = 0; v < fnum; v++) {
@@ -147,8 +230,12 @@ TestLoadObj(
   std::vector<tinyobj::shape_t> shapes;
   std::vector<tinyobj::material_t> materials;
 
+  timerutil t;
+  t.start();
   std::string err;
   bool ret = tinyobj::LoadObj(&attrib, &shapes, &materials, &err, filename, basepath, triangulate);
+  t.end();
+  printf("Parsing time: %lu [msecs]\n", t.msec());
 
   if (!err.empty()) {
     std::cerr << err << std::endl;
