1 /*

     2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef OS_LINUX_VM_OSCONTAINER_LINUX_HPP

    26 #define OS_LINUX_VM_OSCONTAINER_LINUX_HPP

    27 

    28 #include "utilities/globalDefinitions.hpp"

    29 #include "utilities/macros.hpp"

    30 #include "memory/allocation.hpp"

    31 

    32 #define OSCONTAINER_ERROR (-2)

    33 

    34 class OSContainer: AllStatic {

    35 

    36  private:

    37   static bool   _is_initialized;

    38   static bool   _is_containerized;

    39 

    40  public:

    41   static void init();

    42   static inline bool is_containerized();

    43   static char * container_type();

    44 

    45   static jlong memory_limit_in_bytes();

    46   static jlong memory_and_swap_limit_in_bytes();

    47   static jlong memory_soft_limit_in_bytes();

    48   static jlong memory_usage_in_bytes();

    49   static jlong memory_max_usage_in_bytes();

    50 

    51   static int active_processor_count();

    52 

    53   static char * cpu_cpuset_cpus();

    54   static char * cpu_cpuset_memory_nodes();

    55 

    56   static int cpu_quota();

    57   static int cpu_period();

    58 

    59   static int cpu_shares();

    60 

    61 };

    62 

    63 inline bool OSContainer::is_containerized() {

    64   assert(_is_initialized, "OSContainer not initialized");

    65   return _is_containerized;

    66 }

    67 

    68 #endif // OS_LINUX_VM_OSCONTAINER_LINUX_HPP