Source release 15.0.0

metrics/include/timer_metric.h

@@ -1,19 +1,20 @@
 #ifndef WVCDM_METRICS_TIMER_METRIC_H_
 #define WVCDM_METRICS_TIMER_METRIC_H_
 
-#include <stdint.h>
+#include <chrono>
 
 namespace wvcdm {
 namespace metrics {
 
 class TimerMetric {
-
  public:
+  // Constructs a new TimerMetric.
+  explicit TimerMetric() : is_started_(false) {}
   // Starts the clock running. If the clock was previously set, this resets it.
   // IsStarted will return true after this call.
   void Start();
   // Returns whether or not the timer has started.
-  bool IsStarted() const { return is_started_; };
+  bool IsStarted() const { return is_started_; }
   // Stops the clock and clears the current value.  IsStarted will return false
   // after this call.
   void Clear();
@@ -23,10 +24,9 @@ class TimerMetric {
   double AsUs() const;
 
  private:
-  double sec_;
-  double usec_;
+  std::chrono::steady_clock clock_;
+  std::chrono::time_point<std::chrono::steady_clock> start_;
   bool is_started_;
-
 };
 
 }  // namespace metrics