| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version |
| * 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions |
| * and limitations under the License. |
| */ |
| |
| package org.apache.storm.container.cgroup.core; |
| |
| import java.io.IOException; |
| import java.util.LinkedList; |
| import org.apache.storm.container.cgroup.CgroupUtils; |
| import org.apache.storm.container.cgroup.SubSystemType; |
| |
| public class CpusetCore implements CgroupCore { |
| |
| public static final String CPUSET_CPUS = "/cpuset.cpus"; |
| public static final String CPUSET_MEMS = "/cpuset.mems"; |
| public static final String CPUSET_MEMORY_MIGRATE = "/cpuset.memory_migrate"; |
| public static final String CPUSET_CPU_EXCLUSIVE = "/cpuset.cpu_exclusive"; |
| public static final String CPUSET_MEM_EXCLUSIVE = "/cpuset.mem_exclusive"; |
| public static final String CPUSET_MEM_HARDWALL = "/cpuset.mem_hardwall"; |
| public static final String CPUSET_MEMORY_PRESSURE = "/cpuset.memory_pressure"; |
| public static final String CPUSET_MEMORY_PRESSURE_ENABLED = "/cpuset.memory_pressure_enabled"; |
| public static final String CPUSET_MEMORY_SPREAD_PAGE = "/cpuset.memory_spread_page"; |
| public static final String CPUSET_MEMORY_SPREAD_SLAB = "/cpuset.memory_spread_slab"; |
| public static final String CPUSET_SCHED_LOAD_BALANCE = "/cpuset.sched_load_balance"; |
| public static final String CPUSET_SCHED_RELAX_DOMAIN_LEVEL = "/cpuset.sched_relax_domain_level"; |
| |
| private final String dir; |
| |
| public CpusetCore(String dir) { |
| this.dir = dir; |
| } |
| |
| public static int[] parseNums(String outputStr) { |
| char[] output = outputStr.toCharArray(); |
| LinkedList<Integer> numList = new LinkedList<Integer>(); |
| int value = 0; |
| int start = 0; |
| boolean isHyphen = false; |
| for (char ch : output) { |
| if (ch == ',') { |
| if (isHyphen) { |
| for (; start <= value; start++) { |
| numList.add(start); |
| } |
| isHyphen = false; |
| } else { |
| numList.add(value); |
| } |
| value = 0; |
| } else if (ch == '-') { |
| isHyphen = true; |
| start = value; |
| value = 0; |
| } else { |
| value = value * 10 + (ch - '0'); |
| } |
| } |
| if (output[output.length - 1] != ',') { |
| if (isHyphen) { |
| for (; start <= value; start++) { |
| numList.add(start); |
| } |
| } else { |
| numList.add(value); |
| } |
| } |
| |
| int[] nums = new int[numList.size()]; |
| int index = 0; |
| for (int num : numList) { |
| nums[index] = num; |
| index++; |
| } |
| return nums; |
| } |
| |
| @Override |
| public SubSystemType getType() { |
| return SubSystemType.cpuset; |
| } |
| |
| public int[] getCpus() throws IOException { |
| String output = CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_CPUS)).get(0); |
| return parseNums(output); |
| } |
| |
| public void setCpus(int[] nums) throws IOException { |
| setConfigs(nums, CPUSET_CPUS); |
| } |
| |
| private void setConfigs(int[] nums, String config) throws IOException { |
| StringBuilder sb = new StringBuilder(); |
| for (int num : nums) { |
| sb.append(num); |
| sb.append(','); |
| } |
| sb.deleteCharAt(sb.length() - 1); |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, config), sb.toString()); |
| } |
| |
| public int[] getMems() throws IOException { |
| String output = CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMS)).get(0); |
| return parseNums(output); |
| } |
| |
| public void setMems(int[] nums) throws IOException { |
| setConfigs(nums, CPUSET_MEMS); |
| } |
| |
| public boolean isMemMigrate() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_MIGRATE)).get(0)); |
| return output > 0; |
| } |
| |
| public void setMemMigrate(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_MIGRATE), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public boolean isCpuExclusive() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_CPU_EXCLUSIVE)).get(0)); |
| return output > 0; |
| } |
| |
| public void setCpuExclusive(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_CPU_EXCLUSIVE), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public boolean isMemExclusive() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEM_EXCLUSIVE)).get(0)); |
| return output > 0; |
| } |
| |
| public void setMemExclusive(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEM_EXCLUSIVE), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public boolean isMemHardwall() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEM_HARDWALL)).get(0)); |
| return output > 0; |
| } |
| |
| public void setMemHardwall(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEM_HARDWALL), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public int getMemPressure() throws IOException { |
| String output = CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_PRESSURE)).get(0); |
| return Integer.parseInt(output); |
| } |
| |
| public boolean isMemPressureEnabled() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_PRESSURE_ENABLED)).get(0)); |
| return output > 0; |
| } |
| |
| public void setMemPressureEnabled(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_PRESSURE_ENABLED), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public boolean isMemSpreadPage() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_SPREAD_PAGE)).get(0)); |
| return output > 0; |
| } |
| |
| public void setMemSpreadPage(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_SPREAD_PAGE), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public boolean isMemSpreadSlab() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_SPREAD_SLAB)).get(0)); |
| return output > 0; |
| } |
| |
| public void setMemSpreadSlab(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_MEMORY_SPREAD_SLAB), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public boolean isSchedLoadBlance() throws IOException { |
| int output = Integer.parseInt(CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_SCHED_LOAD_BALANCE)).get(0)); |
| return output > 0; |
| } |
| |
| public void setSchedLoadBlance(boolean flag) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_SCHED_LOAD_BALANCE), String.valueOf(flag ? 1 : 0)); |
| } |
| |
| public int getSchedRelaxDomainLevel() throws IOException { |
| String output = CgroupUtils.readFileByLine(CgroupUtils.getDir(this.dir, CPUSET_SCHED_RELAX_DOMAIN_LEVEL)).get(0); |
| return Integer.parseInt(output); |
| } |
| |
| public void setSchedRelaxDomainLevel(int value) throws IOException { |
| CgroupUtils.writeFileByLine(CgroupUtils.getDir(this.dir, CPUSET_SCHED_RELAX_DOMAIN_LEVEL), String.valueOf(value)); |
| } |
| } |