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 #define OSCONTAINER_CACHE_TIMEOUT (NANOSECS_PER_SEC/50) 34 35 class OSContainer: AllStatic { 36 37 private: 38 static bool _is_initialized; 39 static bool _is_containerized; 40 static int _active_processor_count; 41 42 static jlong read_memory_limit_in_bytes(); 43 44 public: 45 static void init(); 46 static inline bool is_containerized(); 47 static const char * container_type(); 48 49 static jlong uses_mem_hierarchy(); 50 static jlong memory_limit_in_bytes(); 51 static jlong memory_and_swap_limit_in_bytes(); 52 static jlong memory_soft_limit_in_bytes(); 53 static jlong memory_usage_in_bytes(); 54 static jlong memory_max_usage_in_bytes(); 55 56 static int active_processor_count(); 57 58 static char * cpu_cpuset_cpus(); 59 static char * cpu_cpuset_memory_nodes(); 60 61 static int cpu_quota(); 62 static int cpu_period(); 63 64 static int cpu_shares(); 65 66 }; 67 68 inline bool OSContainer::is_containerized() { 69 return _is_containerized; 70 } 71 72 #endif // OS_LINUX_OSCONTAINER_LINUX_HPP