| /* |
| * Copyright (c) 2017, 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. |
| * |
| */ |
| |
| #include <string.h> |
| #include <math.h> |
| #include <errno.h> |
| #include "runtime/globals.hpp" |
| #include "runtime/os.hpp" |
| #include "logging/log.hpp" |
| #include "osContainer_linux.hpp" |
| #include "cgroupSubsystem_linux.hpp" |
| |
| |
| bool OSContainer::_is_initialized = false; |
| bool OSContainer::_is_containerized = false; |
| CgroupSubsystem* cgroup_subsystem; |
| |
| /* init |
| * |
| * Initialize the container support and determine if |
| * we are running under cgroup control. |
| */ |
| void OSContainer::init() { |
| jlong mem_limit; |
| |
| assert(!_is_initialized, "Initializing OSContainer more than once"); |
| |
| _is_initialized = true; |
| _is_containerized = false; |
| |
| log_trace(os, container)("OSContainer::init: Initializing Container Support"); |
| if (!UseContainerSupport) { |
| log_trace(os, container)("Container Support not enabled"); |
| return; |
| } |
| |
| cgroup_subsystem = CgroupSubsystemFactory::create(); |
| if (cgroup_subsystem == NULL) { |
| return; // Required subsystem files not found or other error |
| } |
| // We need to update the amount of physical memory now that |
| // cgroup subsystem files have been processed. |
| if ((mem_limit = cgroup_subsystem->memory_limit_in_bytes()) > 0) { |
| os::Linux::set_physical_memory(mem_limit); |
| log_info(os, container)("Memory Limit is: " JLONG_FORMAT, mem_limit); |
| } |
| |
| _is_containerized = true; |
| |
| } |
| |
| const char * OSContainer::container_type() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->container_type(); |
| } |
| |
| jlong OSContainer::memory_limit_in_bytes() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->memory_limit_in_bytes(); |
| } |
| |
| jlong OSContainer::memory_and_swap_limit_in_bytes() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->memory_and_swap_limit_in_bytes(); |
| } |
| |
| jlong OSContainer::memory_soft_limit_in_bytes() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->memory_soft_limit_in_bytes(); |
| } |
| |
| jlong OSContainer::memory_usage_in_bytes() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->memory_usage_in_bytes(); |
| } |
| |
| jlong OSContainer::memory_max_usage_in_bytes() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->memory_max_usage_in_bytes(); |
| } |
| |
| char * OSContainer::cpu_cpuset_cpus() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->cpu_cpuset_cpus(); |
| } |
| |
| char * OSContainer::cpu_cpuset_memory_nodes() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->cpu_cpuset_memory_nodes(); |
| } |
| |
| int OSContainer::active_processor_count() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->active_processor_count(); |
| } |
| |
| int OSContainer::cpu_quota() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->cpu_quota(); |
| } |
| |
| int OSContainer::cpu_period() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->cpu_period(); |
| } |
| |
| int OSContainer::cpu_shares() { |
| assert(cgroup_subsystem != NULL, "cgroup subsystem not available"); |
| return cgroup_subsystem->cpu_shares(); |
| } |