Update libtest.

1 files changed, 135 insertions, 0 deletions

diff --git a/libtest/core_count.cc b/libtest/core_count.cc
new file mode 100644
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--- /dev/null
+++ b/libtest/core_count.cc
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+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ *
+ *  Data Differential YATL (i.e. libtest)  library
+ *
+ *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
+ *
+ *  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.
+ *
+ *      * The names of its contributors may not 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 <config.h>
+
+#include <cstdlib>
+#include <fcntl.h>
+#include <getopt.h>
+#include <iostream>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <libtest/cpu.hpp>
+
+static void version_command(const char *command_name, int major_version, int minor_version)
+{
+  std::cout << command_name << " " << major_version << "." << minor_version << std::endl;
+}
+
+static void help_command(const char *command_name,
+                         int major_version, int minor_version,
+                         const struct option *long_options)
+{
+  std::cout << command_name << " " << major_version << "." << minor_version << std::endl;
+  std::cout << "Prints the number of cores found on the local host." << std::endl << std::endl;
+
+  for (uint32_t x= 0; long_options[x].name; x++)
+  {
+    std::cout << "\t --" << long_options[x].name << char(long_options[x].has_arg ? '=' : ' ') << std::endl;
+  }
+
+  std::cout << std::endl;
+}
+
+enum {
+  OPT_HELP,
+  OPT_VERSION
+};
+
+static void options_parse(int argc, char *argv[])
+{
+  static struct option long_options[]=
+  {
+    { "version", no_argument, NULL, OPT_VERSION},
+    { "help", no_argument, NULL, OPT_HELP},
+    {0, 0, 0, 0},
+  };
+
+  bool opt_version= false;
+  bool opt_help= false;
+  int option_index= 0;
+
+  while (1)
+  {
+    int option_rv= getopt_long(argc, argv, "", long_options, &option_index);
+    if (option_rv == -1) 
+    {
+      break;
+    }
+
+    switch (option_rv)
+    {
+    case OPT_HELP: /* --help or -h */
+      opt_help= true;
+      break;
+
+    case OPT_VERSION: /* --version or -v */
+      opt_version= true;
+      break;
+
+    case '?':
+      /* getopt_long already printed an error message. */
+      exit(EXIT_FAILURE);
+
+    default:
+      help_command(argv[0], 1, 0, long_options);
+      exit(EXIT_FAILURE);
+    }
+  }
+
+  if (opt_version)
+  {
+    version_command(argv[0], 1, 0);
+    exit(EXIT_SUCCESS);
+  }
+
+  if (opt_help)
+  {
+    help_command(argv[0], 1, 0, long_options);
+    exit(EXIT_SUCCESS);
+  }
+}
+
+int main(int argc, char *argv[])
+{
+  options_parse(argc, argv);
+
+  std::cout << libtest::number_of_cpus() << std::endl;
+
+  return EXIT_SUCCESS;
+}