1 /*
   2  * Copyright (c) 2016, 2018, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.gc.detailed;
  27 
  28 import jdk.test.lib.jfr.AppExecutorHelper;
  29 import jdk.test.lib.process.OutputAnalyzer;
  30 
  31 import java.util.ArrayList;
  32 import java.util.Arrays;
  33 import java.util.List;
  34 
  35 public class ExecuteOOMApp {
  36     /**
  37      * Executes OOM application with JFR recording and returns true if OOM error happened in the
  38      * test thread. Adds -XX:-UseGCOverheadLimit option to avoid "java.lang.OutOfMemoryError: GC overhead limit exceeded".
  39      *
  40      * @param settings JFR settings file
  41      * @param jfrFilename JFR resulting recording filename
  42      * @param additionalVmFlags additional VM flags passed to the java
  43      * @param bytesToAllocate number of bytes to allocate in new object every cycle in OOM application
  44      * @return true - OOM application is finished as expected,i.e. OOM happened in the test thead
  45      *         false - OOM application is finished with OOM error which happened in the non test thread
  46      */
  47     public static boolean execute(String settings, String jfrFilename, String[] additionalVmFlags, int bytesToAllocate) throws Exception {
  48         List<String> additionalVmFlagsList = new ArrayList<>(Arrays.asList(additionalVmFlags));
  49         additionalVmFlagsList.add("-XX:-UseGCOverheadLimit");
  50 
  51         OutputAnalyzer out = AppExecutorHelper.executeAndRecord(settings, jfrFilename, additionalVmFlagsList.toArray(new String[0]),
  52                                                                 OOMApp.class.getName(), String.valueOf(bytesToAllocate));
  53 
  54         if ((out.getExitValue() == 1 && out.getOutput().contains("Exception: java.lang.OutOfMemoryError"))) {
  55             return false;
  56         }
  57 
  58         out.shouldHaveExitValue(0);
  59         System.out.println(out.getOutput());
  60 
  61         return true;
  62     }
  63 }