/*

 * Copyright 2012, 2015 SAP AG. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

// A C++ wrapper around the libo4 porting library. The libo4 porting library

// is a set of bridge functions into native AS/400 functionality.

#ifndef OS_AIX_VM_LIBO4_HPP

#define OS_AIX_VM_LIBO4_HPP

class libo4 {

public:

  // Initialize the libo4 porting library.

  // Returns true if succeeded, false if error.

  static bool init();

  // cleanup of the libo4 porting library.

  static void cleanup();

  // returns a number of memory statistics from the

  // AS/400.

  //

  // Specify NULL for numbers you are not interested in.

  //

  // returns false if an error happened. Activate OsMisc trace for

  // trace output.

  //

  static bool get_memory_info (unsigned long long* p_virt_total, unsigned long long* p_real_total,

    unsigned long long* p_real_free, unsigned long long* p_pgsp_total, unsigned long long* p_pgsp_free);

  // returns information about system load

  // (similar to "loadavg()" under other Unices)

  //

  // Specify NULL for numbers you are not interested in.

  //

  // returns false if an error happened. Activate OsMisc trace for

  // trace output.

  //

  static bool get_load_avg (double* p_avg1, double* p_avg5, double* p_avg15);

  // this is a replacement for the "realpath()" API which does not really work

  // on PASE

  //

  // Specify NULL for numbers you are not interested in.

  //

  // returns false if an error happened. Activate OsMisc trace for

  // trace output.

  //

  static bool realpath (const char* file_name,

      char* resolved_name, int resolved_name_len);

};

#endif // OS_AIX_VM_LIBO4_HPP