Remove YBaseLib dependency

src/common/timer.cpp

@@ -0,0 +1,127 @@
+#include "timer.h"
+
+#ifdef WIN32
+#include "windows_headers.h"
+#else
+#include <sys/time.h>
+#include <time.h>
+#endif
+
+namespace Common {
+
+#ifdef WIN32
+
+static double s_counter_frequency;
+static bool s_counter_initialized = false;
+
+Timer::Value Timer::GetValue()
+{
+  // even if this races, it should still result in the same value..
+  if (!s_counter_initialized)
+  {
+    LARGE_INTEGER Freq;
+    QueryPerformanceFrequency(&Freq);
+    s_counter_frequency = static_cast<double>(Freq.QuadPart) / 1000000000.0;
+    s_counter_initialized = true;
+  }
+
+  Timer::Value ReturnValue;
+  QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&ReturnValue));
+  return ReturnValue;
+}
+
+double Timer::ConvertValueToNanoseconds(Timer::Value value)
+{
+  return (static_cast<double>(value) / s_counter_frequency);
+}
+
+double Timer::ConvertValueToMilliseconds(Timer::Value value)
+{
+  return ((static_cast<double>(value) / s_counter_frequency) / 1000000.0);
+}
+
+double Timer::ConvertValueToSeconds(Timer::Value value)
+{
+  return ((static_cast<double>(value) / s_counter_frequency) / 1000000000.0);
+}
+
+#else
+
+#if 1 // using clock_gettime()
+
+Timer::Value Timer::GetValue()
+{
+  struct timespec tv;
+  clock_gettime(CLOCK_MONOTONIC, &tv);
+  return ((Value)tv.tv_nsec + (Value)tv.tv_sec * 1000000000);
+}
+
+double Timer::ConvertValueToNanoseconds(Timer::Value value)
+{
+  return static_cast<double>(value);
+}
+
+double Timer::ConvertValueToMilliseconds(Timer::Value value)
+{
+  return (static_cast<double>(value) / 1000000.0);
+}
+
+double Timer::ConvertValueToSeconds(Timer::Value value)
+{
+  return (static_cast<double>(value) / 1000000000.0);
+}
+
+#else // using gettimeofday()
+
+Timer::Value Timer::GetValue()
+{
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  return ((Value)tv.tv_usec) + ((Value)tv.tv_sec * (Value)1000000);
+}
+
+double Timer::ConvertValueToNanoseconds(Timer::Value value)
+{
+  return ((double)value * 1000.0);
+}
+
+double Timer::ConvertValueToMilliseconds(Timer::Value value)
+{
+  return ((double)value / 1000.0);
+}
+
+double Timer::ConvertValueToSeconds(Timer::Value value)
+{
+  return ((double)value / 1000000.0);
+}
+
+#endif
+
+#endif
+
+Timer::Timer()
+{
+  Reset();
+}
+
+void Timer::Reset()
+{
+  m_tvStartValue = GetValue();
+}
+
+double Timer::GetTimeSeconds() const
+{
+  return ConvertValueToSeconds(GetValue() - m_tvStartValue);
+}
+
+double Timer::GetTimeMilliseconds() const
+{
+  return ConvertValueToMilliseconds(GetValue() - m_tvStartValue);
+}
+
+double Timer::GetTimeNanoseconds() const
+{
+  return ConvertValueToNanoseconds(GetValue() - m_tvStartValue);
+}
+
+} // namespace Common