Introduce CSV reporter

1 files changed, 118 insertions, 0 deletions

diff --git a/src/console_reporter.cc b/src/console_reporter.cc
new file mode 100644
index 0000000..7a99dfb
--- /dev/null
+++ b/src/console_reporter.cc
@@ -0,0 +1,118 @@
+// 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 <cstdint>
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include "check.h"
+#include "colorprint.h"
+#include "string_util.h"
+#include "walltime.h"
+
+namespace benchmark {
+
+bool ConsoleReporter::ReportContext(const Context& context) {
+  name_field_width_ = context.name_field_width;
+
+  std::cerr << "Run on (" << context.num_cpus << " X " << context.mhz_per_cpu
+            << " MHz CPU " << ((context.num_cpus > 1) ? "s" : "") << "\n";
+
+  std::cerr << LocalDateTimeString() << "\n";
+
+  if (context.cpu_scaling_enabled) {
+    std::cerr << "***WARNING*** CPU scaling is enabled, the benchmark "
+                 "real time measurements may be noisy and will incure extra "
+                 "overhead.\n";
+  }
+
+#ifndef NDEBUG
+  std::cerr << "Build Type: DEBUG\n";
+#endif
+
+  int output_width =
+      fprintf(stdout,
+              "%-*s %10s %10s %10s\n",
+              static_cast<int>(name_field_width_),
+              "Benchmark",
+              "Time(ns)", "CPU(ns)",
+              "Iterations");
+  std::cout << std::string(output_width - 1, '-') << "\n";
+
+  return true;
+}
+
+void ConsoleReporter::ReportRuns(const std::vector<Run>& reports) {
+  if (reports.empty()) {
+    return;
+  }
+
+  for (Run const& run : reports) {
+    CHECK_EQ(reports[0].benchmark_name, run.benchmark_name);
+    PrintRunData(run);
+  }
+
+  if (reports.size() < 2) {
+    // We don't report aggregated data if there was a single run.
+    return;
+  }
+
+  Run mean_data;
+  Run stddev_data;
+  BenchmarkReporter::ComputeStats(reports, &mean_data, &stddev_data);
+
+  // Output using PrintRun.
+  PrintRunData(mean_data);
+  PrintRunData(stddev_data);
+}
+
+void ConsoleReporter::PrintRunData(const Run& result) {
+  // Format bytes per second
+  std::string rate;
+  if (result.bytes_per_second > 0) {
+    rate = StrCat(" ", HumanReadableNumber(result.bytes_per_second), "B/s");
+  }
+
+  // Format items per second
+  std::string items;
+  if (result.items_per_second > 0) {
+    items = StrCat(" ", HumanReadableNumber(result.items_per_second),
+                   " items/s");
+  }
+
+  double const multiplier = 1e9; // nano second multiplier
+  ColorPrintf(COLOR_GREEN, "%-*s ",
+              name_field_width_, result.benchmark_name.c_str());
+  if (result.iterations == 0) {
+    ColorPrintf(COLOR_YELLOW, "%10.0f %10.0f ",
+                result.real_accumulated_time * multiplier,
+                result.cpu_accumulated_time * multiplier);
+  } else {
+    ColorPrintf(COLOR_YELLOW, "%10.0f %10.0f ",
+                (result.real_accumulated_time * multiplier) /
+                    (static_cast<double>(result.iterations)),
+                (result.cpu_accumulated_time * multiplier) /
+                    (static_cast<double>(result.iterations)));
+  }
+  ColorPrintf(COLOR_CYAN, "%10lld", result.iterations);
+  ColorPrintf(COLOR_DEFAULT, "%*s %*s %s\n",
+              13, rate.c_str(),
+              18, items.c_str(),
+              result.report_label.c_str());
+}
+
+}  // end namespace benchmark