1 /* 2 * Copyright (c) 2013, 2016, 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 import java.io.BufferedReader; 25 import java.io.File; 26 import java.io.FileNotFoundException; 27 import java.io.FileReader; 28 import java.io.IOException; 29 import java.io.Reader; 30 import java.nio.CharBuffer; 31 import java.util.Arrays; 32 import java.util.Scanner; 33 34 import jdk.test.lib.Asserts; 35 import jdk.test.lib.JDKToolLauncher; 36 import jdk.test.lib.Platform; 37 import jdk.test.lib.process.OutputAnalyzer; 38 import jdk.test.lib.process.ProcessTools; 39 40 /* 41 * @test 42 * @bug 6313383 43 * @key regression 44 * @summary Regression test for hprof export issue due to large heaps (>2G) 45 * @library /test/lib 46 * @modules java.base/jdk.internal.misc 47 * java.compiler 48 * java.management/sun.management 49 * jdk.jvmstat/sun.jvmstat.monitor 50 * @build JMapHProfLargeHeapProc 51 * @run main JMapHProfLargeHeapTest 52 */ 53 54 public class JMapHProfLargeHeapTest { 55 private static final String HEAP_DUMP_FILE_NAME = "heap.bin"; 56 private static final String HPROF_HEADER_1_0_1 = "JAVA PROFILE 1.0.1"; 57 private static final String HPROF_HEADER_1_0_2 = "JAVA PROFILE 1.0.2"; 58 private static final long M = 1024L; 59 private static final long G = 1024L * M; 60 61 public static void main(String[] args) throws Exception { 62 if (!Platform.shouldSAAttach()) { 63 System.out.println("SA attach not expected to work - test skipped."); 64 return; 65 } 66 67 // All heap dumps should create 1.0.2 file format 68 // Hotspot internal heapdumper always use HPROF_HEADER_1_0_2 format, 69 // but SA heapdumper still use HPROF_HEADER_1_0_1 for small heaps 70 testHProfFileFormat("-Xmx1g", 22 * M, HPROF_HEADER_1_0_1); 71 72 /** 73 * This test was deliberately commented out since the test system lacks 74 * support to handle the requirements for this kind of heap size in a 75 * good way. If or when it becomes possible to run this kind of tests in 76 * the test environment the test should be enabled again. 77 * */ 78 // Large heap 2,2 gigabytes, should create 1.0.2 file format 79 // testHProfFileFormat("-Xmx4g", 2 * G + 2 * M, HPROF_HEADER_1_0_2); 80 } 81 82 private static void testHProfFileFormat(String vmArgs, long heapSize, 83 String expectedFormat) throws Exception, IOException, 84 InterruptedException, FileNotFoundException { 85 ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder( 86 "--add-exports=java.management/sun.management=ALL-UNNAMED", vmArgs, "JMapHProfLargeHeapProc", String.valueOf(heapSize)); 87 procBuilder.redirectError(ProcessBuilder.Redirect.INHERIT); 88 Process largeHeapProc = procBuilder.start(); 89 90 try (Scanner largeHeapScanner = new Scanner( 91 largeHeapProc.getInputStream());) { 92 String pidstring = null; 93 while ((pidstring = largeHeapScanner.findInLine("PID\\[[0-9].*\\]")) == null) { 94 Thread.sleep(500); 95 } 96 int pid = Integer.parseInt(pidstring.substring(4, 97 pidstring.length() - 1)); 98 System.out.println("Extracted pid: " + pid); 99 100 JDKToolLauncher jMapLauncher = JDKToolLauncher 101 .createUsingTestJDK("jhsdb"); 102 jMapLauncher.addToolArg("jmap"); 103 jMapLauncher.addToolArg("--binaryheap"); 104 jMapLauncher.addToolArg("--pid"); 105 jMapLauncher.addToolArg(String.valueOf(pid)); 106 107 ProcessBuilder jMapProcessBuilder = new ProcessBuilder( 108 jMapLauncher.getCommand()); 109 System.out.println("jmap command: " 110 + Arrays.toString(jMapLauncher.getCommand())); 111 112 Process jMapProcess = jMapProcessBuilder.start(); 113 OutputAnalyzer analyzer = new OutputAnalyzer(jMapProcess); 114 analyzer.shouldHaveExitValue(0); 115 analyzer.shouldContain(HEAP_DUMP_FILE_NAME); 116 117 largeHeapProc.getOutputStream().write('\n'); 118 119 File dumpFile = new File(HEAP_DUMP_FILE_NAME); 120 Asserts.assertTrue(dumpFile.exists(), "Heap dump file not found."); 121 122 try (Reader reader = new BufferedReader(new FileReader(dumpFile))) { 123 CharBuffer buf = CharBuffer.allocate(expectedFormat.length()); 124 reader.read(buf); 125 buf.clear(); 126 Asserts.assertEQ(buf.toString(), expectedFormat, 127 "Wrong file format. Expected '" + expectedFormat 128 + "', but found '" + buf.toString() + "'"); 129 } 130 131 System.out.println("Success!"); 132 133 } finally { 134 largeHeapProc.destroyForcibly(); 135 } 136 } 137 }