Apply reporter interface changes. Make report methods non-const and add a Finalize method.

include/benchmark/benchmark_api.h

@@ -149,7 +149,7 @@ void Initialize(int* argc, const char** argv);
 // Otherwise, run all benchmarks specified by the --benchmark_filter flag,
 // and exit after running the benchmarks.
 void RunSpecifiedBenchmarks();
-void RunSpecifiedBenchmarks(const BenchmarkReporter* reporter);
+void RunSpecifiedBenchmarks(BenchmarkReporter* reporter);
 
 // If this routine is called, peak memory allocation past this point in the
 // benchmark is reported at the end of the benchmark report line. (It is

include/benchmark/reporter.h

@@ -67,13 +67,17 @@ class BenchmarkReporter {
   // platform under which the benchmarks are running. The benchmark run is
   // never started if this function returns false, allowing the reporter
   // to skip runs based on the context information.
-  virtual bool ReportContext(const Context& context) const = 0;
+  virtual bool ReportContext(const Context& context) = 0;
 
   // Called once for each group of benchmark runs, gives information about
   // cpu-time and heap memory usage during the benchmark run.
   // Note that all the grouped benchmark runs should refer to the same
   // benchmark, thus have the same name.
-  virtual void ReportRuns(const std::vector<Run>& report) const = 0;
+  virtual void ReportRuns(const std::vector<Run>& report) = 0;
+
+  // Called once and only once after ever group of benchmarks is run and
+  // reported.
+  virtual void Finalize();
 
   virtual ~BenchmarkReporter();
 };
@@ -82,12 +86,12 @@ class BenchmarkReporter {
 // default reporter used by RunSpecifiedBenchmarks().
 class ConsoleReporter : public BenchmarkReporter {
  public:
-  virtual bool ReportContext(const Context& context) const;
-  virtual void ReportRuns(const std::vector<Run>& reports) const;
+  virtual bool ReportContext(const Context& context);
+  virtual void ReportRuns(const std::vector<Run>& reports);
  private:
-  virtual void PrintRunData(const Run& report) const;
-  // TODO(ericwf): Find a better way to share this information.
-  mutable size_t name_field_width_;
+  virtual void PrintRunData(const Run& report);
+
+  size_t name_field_width_;
 };
 
 } // end namespace benchmark

src/benchmark.cc

@@ -606,7 +606,7 @@ void RunInThread(const benchmark::internal::Benchmark::Instance* b,
 }
 
 void RunBenchmark(const benchmark::internal::Benchmark::Instance& b,
-                  const BenchmarkReporter* br) EXCLUDES(GetBenchmarkLock()) {
+                  BenchmarkReporter* br) EXCLUDES(GetBenchmarkLock()) {
   int iters = FLAGS_benchmark_iterations ? FLAGS_benchmark_iterations
                                          : 1;
   std::vector<BenchmarkReporter::Run> reports;
@@ -763,7 +763,7 @@ void State::SetLabel(const char* label) {
 namespace internal {
 
 void RunMatchingBenchmarks(const std::string& spec,
-                           const BenchmarkReporter* reporter) {
+                           BenchmarkReporter* reporter) {
   CHECK(reporter != nullptr);
   if (spec.empty()) return;
 
@@ -813,12 +813,15 @@ void RunSpecifiedBenchmarks() {
   RunSpecifiedBenchmarks(nullptr);
 }
 
-void RunSpecifiedBenchmarks(const BenchmarkReporter* reporter) {
+void RunSpecifiedBenchmarks(BenchmarkReporter* provided_reporter) {
   std::string spec = FLAGS_benchmark_filter;
   if (spec.empty() || spec == "all")
     spec = ".";  // Regexp that matches all benchmarks
   ConsoleReporter default_reporter;
-  internal::RunMatchingBenchmarks(spec, reporter ? reporter : &default_reporter);
+  BenchmarkReporter* reporter = provided_reporter ? provided_reporter
+                                                  : &default_reporter;
+  internal::RunMatchingBenchmarks(spec, reporter);
+  reporter->Finalize();
 }
 
 namespace internal {

src/reporter.cc

@@ -85,10 +85,13 @@ void ComputeStats(const std::vector<BenchmarkReporter::Run>& reports,
 
 } // end namespace
 
+void BenchmarkReporter::Finalize() {
+}
 
-BenchmarkReporter::~BenchmarkReporter() {}
+BenchmarkReporter::~BenchmarkReporter() {
+}
 
-bool ConsoleReporter::ReportContext(const Context& context) const {
+bool ConsoleReporter::ReportContext(const Context& context) {
   name_field_width_ = context.name_field_width;
 
   fprintf(stdout,
@@ -125,8 +128,7 @@ bool ConsoleReporter::ReportContext(const Context& context) const {
   return true;
 }
 
-void ConsoleReporter::ReportRuns(
-    const std::vector<Run>& reports) const {
+void ConsoleReporter::ReportRuns(const std::vector<Run>& reports) {
   if (reports.empty()) {
     return;
   }
@@ -151,7 +153,7 @@ void ConsoleReporter::ReportRuns(
   fprintf(stdout, "\n");
 }
 
-void ConsoleReporter::PrintRunData(const Run& result) const {
+void ConsoleReporter::PrintRunData(const Run& result) {
   // Format bytes per second
   std::string rate;
   if (result.bytes_per_second > 0) {

test/filter_test.cc

@@ -23,11 +23,11 @@ double CalculatePi(int depth) {
 
 class TestReporter : public benchmark::ConsoleReporter {
  public:
-  virtual bool ReportContext(const Context& context) const {
+  virtual bool ReportContext(const Context& context) {
     return ConsoleReporter::ReportContext(context);
   };
 
-  virtual void ReportRuns(const std::vector<Run>& report) const {
+  virtual void ReportRuns(const std::vector<Run>& report) {
     ++count_;
     ConsoleReporter::ReportRuns(report);
   };