1 files changed, 77 insertions, 0 deletions
diff --git a/deps/v8/src/counters.cc b/deps/v8/src/counters.cc
new file mode 100644
index 0000000000..bf9b8d8b06
--- /dev/null
+++ b/deps/v8/src/counters.cc
@@ -0,0 +1,77 @@
+// Copyright 2007-2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "v8.h"
+
+#include "counters.h"
+#include "platform.h"
+
+namespace v8 { namespace internal {
+
+CounterLookupCallback StatsTable::lookup_function_ = NULL;
+CreateHistogramCallback StatsTable::create_histogram_function_ = NULL;
+AddHistogramSampleCallback StatsTable::add_histogram_sample_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);
+}
+
+// Start the timer.
+void HistogramTimer::Start() {
+  if (GetHistogram() != NULL) {
+    stop_time_ = 0;
+    start_time_ = OS::Ticks();
+  }
+}
+
+// Stop the timer and record the results.
+void HistogramTimer::Stop() {
+  if (histogram_ != NULL) {
+    stop_time_ = OS::Ticks();
+
+    // Compute the delta between start and stop, in milliseconds.
+    int milliseconds = static_cast<int>(stop_time_ - start_time_) / 1000;
+    StatsTable::AddHistogramSample(histogram_, milliseconds);
+  }
+}
+
+} }  // namespace v8::internal