| /* |
| * Copyright (C) 2010 Google Inc. |
| * |
| * Licensed 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 com.google.caliper.runner; |
| |
| import com.google.caliper.model.Host; |
| import com.google.common.collect.ImmutableMultimap; |
| import com.google.common.collect.ImmutableMultiset; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Multimap; |
| import com.google.common.io.Files; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.charset.Charset; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.TreeMap; |
| |
| /** |
| * An instance of this class is responsible for returning a Map that describes the environment: |
| * JVM version, os details, etc. |
| */ |
| final class EnvironmentGetter { |
| Host getHost() { |
| return new Host.Builder() |
| .addAllProperies(getProperties()) |
| .build(); |
| } |
| |
| private Map<String, String> getProperties() { |
| TreeMap<String, String> propertyMap = Maps.newTreeMap(); |
| |
| Map<String, String> sysProps = Maps.fromProperties(System.getProperties()); |
| |
| // Sometimes java.runtime.version is more descriptive than java.version |
| String version = sysProps.get("java.version"); |
| String alternateVersion = sysProps.get("java.runtime.version"); |
| if (alternateVersion != null && alternateVersion.length() > version.length()) { |
| version = alternateVersion; |
| } |
| propertyMap.put("host.availableProcessors", |
| Integer.toString(Runtime.getRuntime().availableProcessors())); |
| |
| String osName = sysProps.get("os.name"); |
| propertyMap.put("os.name", osName); |
| propertyMap.put("os.version", sysProps.get("os.version")); |
| propertyMap.put("os.arch", sysProps.get("os.arch")); |
| |
| if (osName.equals("Linux")) { |
| getLinuxEnvironment(propertyMap); |
| } |
| |
| return propertyMap; |
| } |
| |
| private void getLinuxEnvironment(Map<String, String> propertyMap) { |
| // the following probably doesn't work on ALL linux |
| Multimap<String, String> cpuInfo = propertiesFromLinuxFile("/proc/cpuinfo"); |
| propertyMap.put("host.cpus", Integer.toString(cpuInfo.get("processor").size())); |
| String s = "cpu cores"; |
| propertyMap.put("host.cpu.cores", describe(cpuInfo, s)); |
| propertyMap.put("host.cpu.names", describe(cpuInfo, "model name")); |
| propertyMap.put("host.cpu.cachesize", describe(cpuInfo, "cache size")); |
| |
| Multimap<String, String> memInfo = propertiesFromLinuxFile("/proc/meminfo"); |
| // TODO redo memInfo.toString() so we don't get square brackets |
| propertyMap.put("host.memory.physical", memInfo.get("MemTotal").toString()); |
| propertyMap.put("host.memory.swap", memInfo.get("SwapTotal").toString()); |
| } |
| |
| private static String describe(Multimap<String, String> cpuInfo, String s) { |
| Collection<String> strings = cpuInfo.get(s); |
| // TODO redo the ImmutableMultiset.toString() call so we don't get square brackets |
| return (strings.size() == 1) |
| ? strings.iterator().next() |
| : ImmutableMultiset.copyOf(strings).toString(); |
| } |
| |
| /** |
| * Returns the key/value pairs from the specified properties-file like file. |
| * Unlike standard Java properties files, {@code reader} is allowed to list |
| * the same property multiple times. Comments etc. are unsupported. |
| * |
| * <p>If there's any problem reading the file's contents, we'll return an |
| * empty Multimap. |
| */ |
| private static Multimap<String, String> propertiesFromLinuxFile(String file) { |
| try { |
| List<String> lines = Files.readLines(new File(file), Charset.defaultCharset()); |
| ImmutableMultimap.Builder<String, String> result = ImmutableMultimap.builder(); |
| for (String line : lines) { |
| // TODO(schmoe): replace with Splitter (in Guava release 10) |
| String[] parts = line.split("\\s*\\:\\s*", 2); |
| if (parts.length == 2) { |
| result.put(parts[0], parts[1]); |
| } |
| } |
| return result.build(); |
| } catch (IOException e) { |
| // If there's any problem reading the file, just return an empty multimap. |
| return ImmutableMultimap.of(); |
| } |
| } |
| } |