The os_system class is comprised of static member functions that access general information about your operating system. This class is useful for obtaining system-wide information, such as the name and release number of the operating system, as well as predefined system limits. You cannot create instances of os_system .

The following example uses os_system to display several attributes of the operating system.

Example <ospace/unix/examples/system1.cpp>


  #include <iostream>
#include <ospace/unix.h>

int
main()
  {
  os_unix_toolkit initialize;

  cout << "platform_version: " << os_system::platform_version() << endl;
  cout << "hardware_version: " << os_system::hardware_version() << endl;
  cout << "machine:          " << os_system::machine() << endl;
  cout << "page_size:        " << os_system::page_size() << endl;
  return 0;
  }

platform_version: 5.4
hardware_version: Generic_101945-10
machine:          sun4m
page_size:        4096

Additional system limits can be obtained using static members of os_this_process .

The following example accesses the maximum number of files that can be open. This system information is accessible via os_this_process::open_file_limit() .

Example <ospace/unix/examples/system2.cpp>


  #include <iostream>
#include <ospace/unix.h>

int
main()
  {
  os_unix_toolkit initialize;

  cout << "max open files = " << os_this_process::open_file_limit();
  cout << endl;
  return 0;
  }

max open files = 64