1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package compiler.compilercontrol.share.scenario; 25 26 import compiler.compilercontrol.share.actions.BaseAction; 27 import jdk.test.lib.Asserts; 28 import jdk.test.lib.OutputAnalyzer; 29 import jdk.test.lib.ProcessTools; 30 import jdk.test.lib.dcmd.CommandExecutor; 31 import jdk.test.lib.dcmd.PidJcmdExecutor; 32 33 import java.io.BufferedReader; 34 import java.io.IOException; 35 import java.io.InputStreamReader; 36 import java.io.PrintWriter; 37 import java.lang.reflect.Executable; 38 import java.net.ServerSocket; 39 import java.net.Socket; 40 import java.util.ArrayList; 41 import java.util.List; 42 import java.util.Map; 43 44 public class Executor { 45 private final boolean isValid; 46 private final List<String> vmOptions; 47 private final Map<Executable, State> states; 48 private final List<String> jcmdCommands; 49 50 /** 51 * Constructor 52 * 53 * @param isValid shows that the input given to the VM is valid and 54 * VM shouldn't fail 55 * @param vmOptions a list of VM input options 56 * @param states a state map, or null for the non-checking execution 57 * @param jcmdCommands a list of diagnostic commands to be preformed 58 * on test VM 59 */ 60 public Executor(boolean isValid, List<String> vmOptions, 61 Map<Executable, State> states, List<String> jcmdCommands) { 62 this.isValid = isValid; 63 if (vmOptions == null) { 64 this.vmOptions = new ArrayList<>(); 65 } else { 66 this.vmOptions = vmOptions; 67 } 68 this.states = states; 69 this.jcmdCommands = jcmdCommands; 70 } 71 72 /** 73 * Executes separate VM a gets an OutputAnalyzer instance with the results 74 * of execution 75 */ 76 public OutputAnalyzer execute() { 77 // Add class name that would be executed in a separate VM 78 String classCmd = BaseAction.class.getName(); 79 vmOptions.add(classCmd); 80 OutputAnalyzer output; 81 try (ServerSocket serverSocket = new ServerSocket(0)) { 82 if (isValid) { 83 // Get port test VM will connect to 84 int port = serverSocket.getLocalPort(); 85 if (port == -1) { 86 throw new Error("Socket is not bound: " + port); 87 } 88 vmOptions.add(String.valueOf(port)); 89 if (states != null) { 90 // add flag to show that there should be state map passed 91 vmOptions.add("states"); 92 } 93 // Start separate thread to connect with test VM 94 new Thread(() -> connectTestVM(serverSocket)).start(); 95 } 96 // Start test VM 97 output = ProcessTools.executeTestJvmAllArgs( 98 vmOptions.toArray(new String[vmOptions.size()])); 99 } catch (Throwable thr) { 100 throw new Error("Execution failed: " + thr.getMessage(), thr); 101 } 102 return output; 103 } 104 105 /* 106 * Performs connection with a test VM, sends method states and performs 107 * JCMD operations on a test VM. 108 */ 109 private void connectTestVM(ServerSocket serverSocket) { 110 /* 111 * There are no way to prove that accept was invoked before we started 112 * test VM that connects to this serverSocket. Connection timeout is 113 * enough 114 */ 115 try ( 116 Socket socket = serverSocket.accept(); 117 PrintWriter pw = new PrintWriter(socket.getOutputStream(), 118 true); 119 BufferedReader in = new BufferedReader(new InputStreamReader( 120 socket.getInputStream()))) { 121 // Get pid of the executed process 122 int pid = Integer.parseInt(in.readLine()); 123 Asserts.assertNE(pid, 0, "Got incorrect pid"); 124 executeJCMD(pid); 125 if (states != null) { 126 // serialize and send state map 127 states.forEach((executable, state) -> { 128 pw.println("{"); 129 pw.println(executable.toGenericString()); 130 pw.println(state.toString()); 131 pw.println("}"); 132 }); 133 } else { 134 pw.println(); 135 } 136 } catch (IOException e) { 137 throw new Error("Failed to write data: " + e.getMessage(), e); 138 } 139 } 140 141 // Executes all diagnostic commands 142 protected void executeJCMD(int pid) { 143 CommandExecutor jcmdExecutor = new PidJcmdExecutor(String.valueOf(pid)); 144 for (String command : jcmdCommands) { 145 jcmdExecutor.execute(command); 146 } 147 } 148 }