1/*
2 * Copyright (c) 2017, 2019, 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_OSCONTAINER_LINUX_HPP
26#define OS_LINUX_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
34class 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 const char * container_type();
44
45 static jlong uses_mem_hierarchy();
46 static jlong memory_limit_in_bytes();
47 static jlong memory_and_swap_limit_in_bytes();
48 static jlong memory_soft_limit_in_bytes();
49 static jlong memory_usage_in_bytes();
50 static jlong memory_max_usage_in_bytes();
51
52 static int active_processor_count();
53
54 static char * cpu_cpuset_cpus();
55 static char * cpu_cpuset_memory_nodes();
56
57 static int cpu_quota();
58 static int cpu_period();
59
60 static int cpu_shares();
61
62};
63
64inline bool OSContainer::is_containerized() {
65 assert(_is_initialized, "OSContainer not initialized");
66 return _is_containerized;
67}
68
69#endif // OS_LINUX_OSCONTAINER_LINUX_HPP
70