1 files changed, 75 insertions, 0 deletions
diff --git a/libcxx/utils/google-benchmark/src/reporter.cc b/libcxx/utils/google-benchmark/src/reporter.cc
new file mode 100644
index 00000000000..5187859074f
--- /dev/null
+++ b/libcxx/utils/google-benchmark/src/reporter.cc
@@ -0,0 +1,75 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "benchmark/reporter.h"
+#include "walltime.h"
+
+#include <cstdlib>
+
+#include <iostream>
+#include <vector>
+#include <tuple>
+
+#include "check.h"
+#include "stat.h"
+
+namespace benchmark {
+
+BenchmarkReporter::BenchmarkReporter()
+    : output_stream_(&std::cout), error_stream_(&std::cerr)
+{
+}
+
+BenchmarkReporter::~BenchmarkReporter() {
+}
+
+void BenchmarkReporter::PrintBasicContext(std::ostream *out_ptr,
+                                          Context const &context) {
+  CHECK(out_ptr) << "cannot be null";
+  auto& Out = *out_ptr;
+
+  Out << "Run on (" << context.num_cpus << " X " << context.mhz_per_cpu
+            << " MHz CPU " << ((context.num_cpus > 1) ? "s" : "") << ")\n";
+
+  Out << LocalDateTimeString() << "\n";
+
+  if (context.cpu_scaling_enabled) {
+    Out << "***WARNING*** CPU scaling is enabled, the benchmark "
+                 "real time measurements may be noisy and will incur extra "
+                 "overhead.\n";
+  }
+
+#ifndef NDEBUG
+  Out << "***WARNING*** Library was built as DEBUG. Timings may be "
+               "affected.\n";
+#endif
+}
+
+double BenchmarkReporter::Run::GetAdjustedRealTime() const {
+  double new_time = real_accumulated_time * GetTimeUnitMultiplier(time_unit);
+  if (iterations != 0)
+    new_time /= static_cast<double>(iterations);
+  return new_time;
+}
+
+double BenchmarkReporter::Run::GetAdjustedCPUTime() const {
+  double new_time = cpu_accumulated_time * GetTimeUnitMultiplier(time_unit);
+  if (iterations != 0)
+    new_time /= static_cast<double>(iterations);
+  return new_time;
+}
+
+
+
+} // end namespace benchmark