| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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.android.tradefed.util; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Utility used to parse(USER,PID and NAME) from the "ps" command output |
| */ |
| public class PsParser { |
| |
| private static final String LINE_SEPARATOR = "\\n"; |
| private static final String PROCESS_INFO_SEPARATOR = "\\s+"; |
| private static final String BAD_PID = "bad pid '-A'"; |
| |
| /** |
| * Parse username, process id and process name from the ps command output and convert to list of |
| * ProcessInfo objects. |
| * |
| * @param psOutput output of "ps" command. |
| * @return list of processInfo |
| */ |
| public static List<ProcessInfo> getProcesses(String psOutput) { |
| |
| List<ProcessInfo> processesInfo = new ArrayList<ProcessInfo>(); |
| if (psOutput.isEmpty()) { |
| return processesInfo; |
| } |
| String processLines[] = psOutput.split(LINE_SEPARATOR); |
| |
| /* |
| * (ps -A || ps) command prints "bad pid '-A'" as first line before the ps header in |
| * N and older builds so skip the first two lines. |
| */ |
| int startLineNum = 1; |
| if (processLines[0].equals(BAD_PID)) { |
| startLineNum = 2; |
| } |
| |
| /* |
| * Sample output: |
| * USER PID PPID VSZ RSS WCHAN PC S NAME |
| * root 1 0 11140 1848 epoll_wait 0 S init |
| * |
| * Not collecting information other than USER,PID and NAME because they are |
| * not always printed for all the processess. |
| */ |
| for (int lineCount = startLineNum; lineCount < processLines.length; lineCount++) { |
| String processInfoStr[] = processLines[lineCount].split(PROCESS_INFO_SEPARATOR); |
| ProcessInfo psInfo = new ProcessInfo(processInfoStr[0], |
| Integer.parseInt(processInfoStr[1]), processInfoStr[processInfoStr.length - 1]); |
| processesInfo.add(psInfo); |
| } |
| return processesInfo; |
| } |
| |
| } |
| |