| /* |
| * Copyright 2013-present Facebook, 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.facebook.buck.util.environment; |
| |
| import com.google.common.base.Optional; |
| import com.sun.management.OperatingSystemMXBean; |
| |
| import java.lang.management.ManagementFactory; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| |
| public class DefaultExecutionEnvironment implements ExecutionEnvironment { |
| private static final long MEGABYTE = 1024L * 1024L; |
| private Platform platform; |
| |
| public DefaultExecutionEnvironment() { |
| platform = Platform.detect(); |
| } |
| |
| @Override |
| public String getHostname() { |
| String localHostname; |
| try { |
| localHostname = InetAddress.getLocalHost().getHostName(); |
| } catch (UnknownHostException e) { |
| localHostname = "unknown"; |
| } |
| return localHostname; |
| } |
| |
| @Override |
| public String getUsername() { |
| return Optional.fromNullable(System.getenv("USER")).or("unknown"); |
| } |
| |
| @Override |
| public int getAvailableCores() { |
| return Runtime.getRuntime().availableProcessors(); |
| } |
| |
| @Override |
| public long getTotalMemoryInMb() { |
| OperatingSystemMXBean osBean = |
| (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean(); |
| return osBean.getTotalPhysicalMemorySize() / MEGABYTE; |
| } |
| |
| @Override |
| public Platform getPlatform() { |
| return platform; |
| } |
| } |