#722 Adding Host Name in Reporting

include/benchmark/benchmark.h

@@ -1293,6 +1293,14 @@ struct CPUInfo {
   BENCHMARK_DISALLOW_COPY_AND_ASSIGN(CPUInfo);
 };
 
+struct SystemInformation {
+  std::string name;
+  static const SystemInformation& Get();
+ private:
+  SystemInformation();
+  BENCHMARK_DISALLOW_COPY_AND_ASSIGN(SystemInformation);
+};
+
 // Interface for custom benchmark result printers.
 // By default, benchmark reports are printed to stdout. However an application
 // can control the destination of the reports by calling
@@ -1302,6 +1310,7 @@ class BenchmarkReporter {
  public:
   struct Context {
     CPUInfo const& cpu_info;
+    SystemInformation const& sys_info;
     // The number of chars in the longest benchmark name.
     size_t name_field_width;
     static const char* executable_name;

src/reporter.cc

@@ -38,6 +38,9 @@ void BenchmarkReporter::PrintBasicContext(std::ostream *out,
 
   Out << LocalDateTimeString() << "\n";
 
+  const SystemInformation &sys_info = context.sys_info;
+  Out << "System Name "<< sys_info.name << "\n";
+
   if (context.executable_name)
     Out << "Running " << context.executable_name << "\n";
 
@@ -79,7 +82,7 @@ void BenchmarkReporter::PrintBasicContext(std::ostream *out,
 // No initializer because it's already initialized to NULL.
 const char *BenchmarkReporter::Context::executable_name;
 
-BenchmarkReporter::Context::Context() : cpu_info(CPUInfo::Get()) {}
+BenchmarkReporter::Context::Context() : cpu_info(CPUInfo::Get()), sys_info(SystemInformation::Get()) {}
 
 std::string BenchmarkReporter::Run::benchmark_name() const {
   std::string name = run_name;

src/sysinfo.cc

@@ -366,6 +366,30 @@ std::vector<CPUInfo::CacheInfo> GetCacheSizes() {
 #endif
 }
 
+std::string GetSystemName() {
+#if defined(BENCHMARK_OS_WINDOWS)
+  std::string str;
+  const unsigned COUNT =  32767;
+  TCHAR  hostname[COUNT];
+  DWORD DWCOUNT = COUNT;
+  if (!GetComputerName(hostname, &DWCOUNT))
+    return std::string("Unable to Get Host Name");
+#ifndef UNICODE
+  str = hostname;
+#else
+  std::wstring wStr = hostname;
+  str = std::string(wStr.begin(), wStr.end());
+#endif
+  return str;
+#else
+  const unsigned COUNT = 64;
+  char hostname[COUNT];
+  int retVal = gethostname(hostname, COUNT);
+  if (retVal != 0) return std::string("Unable to Get Host Name");
+  return std::string(hostname);
+#endif
+}
+
 int GetNumCPUs() {
 #ifdef BENCHMARK_HAS_SYSCTL
   int NumCPU = -1;
@@ -609,4 +633,11 @@ CPUInfo::CPUInfo()
       scaling_enabled(CpuScalingEnabled(num_cpus)),
       load_avg(GetLoadAvg()) {}
 
+
+const SystemInformation& SystemInformation::Get() {
+  static const SystemInformation* info = new SystemInformation();
+  return *info;
+}
+
+SystemInformation::SystemInformation() : name(GetSystemName()) {}
 }  // end namespace benchmark

test/reporter_output_test.cc

@@ -16,6 +16,7 @@ static int AddContextCases() {
   AddCases(TC_ConsoleErr,
            {
                {"%int[-/]%int[-/]%int %int:%int:%int$", MR_Default},
+               {"System Name", MR_Next},
                {"Running .*/reporter_output_test(\\.exe)?$", MR_Next},
                {"Run on \\(%int X %float MHz CPU s?\\)", MR_Next},
            });