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107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
/*
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* Copyright (c) 2017, 2026, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef OS_LINUX_OSCONTAINER_LINUX_HPP
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#define OS_LINUX_OSCONTAINER_LINUX_HPP
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#include "memory/allStatic.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/macros.hpp"
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#include "utilities/ostream.hpp"
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// Some cgroup interface files define the value 'max' for unlimited.
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// Define this constant value to indicate this value.
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const uint64_t value_unlimited = std::numeric_limits<uint64_t>::max();
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// 20ms timeout between re-reads of memory limit and _active_processor_count.
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#define OSCONTAINER_CACHE_TIMEOUT (NANOSECS_PER_SEC/50)
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// Carrier object for print_container_helper()
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class MetricResult: public StackObj {
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private:
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static const uint64_t value_unused = 0;
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bool _success = false;
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physical_memory_size_type _value = value_unused;
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public:
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void set_value(physical_memory_size_type val) {
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// having a value means success
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_success = true;
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_value = val;
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}
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bool success() { return _success; }
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physical_memory_size_type value() { return _value; }
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};
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class OSContainer: AllStatic {
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private:
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static bool _is_initialized;
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static bool _is_containerized;
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static int _active_processor_count;
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public:
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static void init();
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static void print_version_specific_info(outputStream* st);
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static void print_container_helper(outputStream* st, MetricResult& res, const char* metrics);
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template <typename T>
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static void print_container_metric(outputStream* st, const char* metrics, T value, const char* unit = "");
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static inline bool is_containerized();
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static const char * container_type();
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static bool available_memory_in_bytes(physical_memory_size_type& value);
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static bool available_swap_in_bytes(physical_memory_size_type& value);
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static bool memory_limit_in_bytes(physical_memory_size_type& value);
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static bool memory_and_swap_limit_in_bytes(physical_memory_size_type& value);
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static bool memory_and_swap_usage_in_bytes(physical_memory_size_type& value);
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static bool memory_soft_limit_in_bytes(physical_memory_size_type& value);
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static bool memory_throttle_limit_in_bytes(physical_memory_size_type& value);
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static bool memory_usage_in_bytes(physical_memory_size_type& value);
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static bool memory_max_usage_in_bytes(physical_memory_size_type& value);
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static bool rss_usage_in_bytes(physical_memory_size_type& value);
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static bool cache_usage_in_bytes(physical_memory_size_type& value);
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static bool active_processor_count(double& value);
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static char * cpu_cpuset_cpus();
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static char * cpu_cpuset_memory_nodes();
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static bool cpu_quota(int& value);
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static bool cpu_period(int& value);
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static bool cpu_shares(int& value);
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static bool cpu_usage_in_micros(uint64_t& value);
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static bool pids_max(uint64_t& value);
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static bool pids_current(uint64_t& value);
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};
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inline bool OSContainer::is_containerized() {
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return _is_containerized;
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}
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#endif // OS_LINUX_OSCONTAINER_LINUX_HPP
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