| /* |
| * Copyright (c) 2019, 2020, 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 CGROUP_V1_SUBSYSTEM_LINUX_HPP |
| #define CGROUP_V1_SUBSYSTEM_LINUX_HPP |
| |
| #include "runtime/os.hpp" |
| #include "memory/allocation.hpp" |
| #include "cgroupSubsystem_linux.hpp" |
| |
| // Cgroups version 1 specific implementation |
| |
| class CgroupV1Controller: public CgroupController { |
| private: |
| /* mountinfo contents */ |
| char *_root; |
| char *_mount_point; |
| |
| /* Constructed subsystem directory */ |
| char *_path; |
| |
| public: |
| CgroupV1Controller(char *root, char *mountpoint) { |
| _root = os::strdup(root); |
| _mount_point = os::strdup(mountpoint); |
| _path = NULL; |
| } |
| |
| virtual void set_subsystem_path(char *cgroup_path); |
| char *subsystem_path() { return _path; } |
| }; |
| |
| class CgroupV1MemoryController: public CgroupV1Controller { |
| |
| public: |
| bool is_hierarchical() { return _uses_mem_hierarchy; } |
| void set_subsystem_path(char *cgroup_path); |
| private: |
| /* Some container runtimes set limits via cgroup |
| * hierarchy. If set to true consider also memory.stat |
| * file if everything else seems unlimited */ |
| bool _uses_mem_hierarchy; |
| jlong uses_mem_hierarchy(); |
| void set_hierarchical(bool value) { _uses_mem_hierarchy = value; } |
| |
| public: |
| CgroupV1MemoryController(char *root, char *mountpoint) : CgroupV1Controller(root, mountpoint) { |
| _uses_mem_hierarchy = false; |
| } |
| |
| }; |
| |
| class CgroupV1Subsystem: public CgroupSubsystem { |
| |
| public: |
| jlong read_memory_limit_in_bytes(); |
| jlong memory_and_swap_limit_in_bytes(); |
| jlong memory_soft_limit_in_bytes(); |
| jlong memory_usage_in_bytes(); |
| jlong memory_max_usage_in_bytes(); |
| char * cpu_cpuset_cpus(); |
| char * cpu_cpuset_memory_nodes(); |
| |
| int cpu_quota(); |
| int cpu_period(); |
| |
| int cpu_shares(); |
| |
| const char * container_type() { |
| return "cgroupv1"; |
| } |
| CachingCgroupController * memory_controller() { return _memory; } |
| CachingCgroupController * cpu_controller() { return _cpu; } |
| |
| private: |
| julong _unlimited_memory; |
| |
| /* controllers */ |
| CachingCgroupController* _memory = NULL; |
| CgroupV1Controller* _cpuset = NULL; |
| CachingCgroupController* _cpu = NULL; |
| CgroupV1Controller* _cpuacct = NULL; |
| |
| public: |
| CgroupV1Subsystem(CgroupV1Controller* cpuset, |
| CgroupV1Controller* cpu, |
| CgroupV1Controller* cpuacct, |
| CgroupV1MemoryController* memory) { |
| _cpuset = cpuset; |
| _cpu = new CachingCgroupController(cpu); |
| _cpuacct = cpuacct; |
| _memory = new CachingCgroupController(memory); |
| _unlimited_memory = (LONG_MAX / os::vm_page_size()) * os::vm_page_size(); |
| } |
| }; |
| |
| #endif // CGROUP_V1_SUBSYSTEM_LINUX_HPP |