/*

 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. 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.

 *

 */

#ifndef OS_LINUX_OSCONTAINER_LINUX_HPP

#define OS_LINUX_OSCONTAINER_LINUX_HPP

#include "utilities/globalDefinitions.hpp"

#include "utilities/macros.hpp"

#include "memory/allocation.hpp"

#define OSCONTAINER_ERROR (-2)

class OSContainer: AllStatic {

 private:

  static bool   _is_initialized;

  static bool   _is_containerized;

 public:

  static void init();

  static inline bool is_containerized();

  static const char * container_type();

  static jlong uses_mem_hierarchy();

  static jlong memory_limit_in_bytes();

  static jlong memory_and_swap_limit_in_bytes();

  static jlong memory_soft_limit_in_bytes();

  static jlong memory_usage_in_bytes();

  static jlong memory_max_usage_in_bytes();

  static int active_processor_count();

  static char * cpu_cpuset_cpus();

  static char * cpu_cpuset_memory_nodes();

  static int cpu_quota();

  static int cpu_period();

  static int cpu_shares();

};

inline bool OSContainer::is_containerized() {

  assert(_is_initialized, "OSContainer not initialized");

  return _is_containerized;

}

#endif // OS_LINUX_OSCONTAINER_LINUX_HPP