src/counters.cc

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#include "v8.h"

#include "counters.h"
#include "platform.h"

namespace v8 { namespace internal {

CounterLookupCallback StatsTable::lookup_function_ = NULL;

// Start the timer.
void StatsCounterTimer::Start() {
  if (!counter_.Enabled())
    return;
  stop_time_ = 0;
  start_time_ = OS::Ticks();
}

// Stop the timer and record the results.
void StatsCounterTimer::Stop() {
  if (!counter_.Enabled())
    return;
  stop_time_ = OS::Ticks();

  // Compute the delta between start and stop, in milliseconds.
  int milliseconds = static_cast<int>(stop_time_ - start_time_) / 1000;
  counter_.Increment(milliseconds);
}

} }  // namespace v8::internal