Cleanup

1 files changed, 0 insertions, 30 deletions

diff --git a/src/metrics.cc b/src/metrics.cc
index 9b43883..9a4dd12 100644
--- a/src/metrics.cc
+++ b/src/metrics.cc
@@ -14,23 +14,12 @@
 
 #include "metrics.h"
 
-#if __cplusplus >= 201103L
-// C++ 11 is not available on older Linux build machines.
-#define USE_CHRONO
-#endif
-
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
 
 #include <algorithm>
-
-#if defined(USE_CHRONO)
 #include <chrono>
-#else
-#error
-#include <sys/time.h>
-#endif
 
 #include "util.h"
 
@@ -42,20 +31,12 @@ namespace {
 
 /// Compute a platform-specific high-res timer value that fits into an int64.
 int64_t HighResTimer() {
-#if defined(USE_CHRONO)
   auto now = chrono::steady_clock::now();
   return chrono::duration_cast<chrono::steady_clock::duration>(
              now.time_since_epoch())
       .count();
-#else
-  timeval tv;
-  if (gettimeofday(&tv, NULL) < 0)
-    Fatal("gettimeofday: %s", strerror(errno));
-  return (int64_t)tv.tv_sec * 1000*1000 + tv.tv_usec;
-#endif
 }
 
-#if defined(USE_CHRONO)
 constexpr int64_t GetFrequency() {
   // If numerator isn't 1 then we lose precision and that will need to be
   // assessed.
@@ -64,26 +45,15 @@ constexpr int64_t GetFrequency() {
   return std::chrono::steady_clock::period::den /
          std::chrono::steady_clock::period::num;
 }
-#endif
 
 int64_t TimerToMicros(int64_t dt) {
-#if defined(USE_CHRONO)
   // dt is in ticks.  We want microseconds.
   return (dt * 1000000) / GetFrequency();
-#else
-  // No conversion necessary.
-  return dt;
-#endif
 }
 
 int64_t TimerToMicros(double dt) {
-#if defined(USE_CHRONO)
   // dt is in ticks.  We want microseconds.
   return (dt * 1000000) / GetFrequency();
-#else
-  // No conversion necessary.
-  return dt;
-#endif
 }
 
 }  // anonymous namespace