1 /* 2 * Copyright (c) 2014, 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 25 /* 26 * @test OverflowCodeCacheTest 27 * @bug 8059550 28 * @summary testing of code cache segments overflow 29 * @library /test/lib 30 * @requires vm.flavor != "minimal" 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * 34 * @build sun.hotspot.WhiteBox 35 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 36 * sun.hotspot.WhiteBox$WhiteBoxPermission 37 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 38 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 39 * -XX:-SegmentedCodeCache 40 * compiler.codecache.OverflowCodeCacheTest 41 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 42 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 43 * -XX:+SegmentedCodeCache 44 * compiler.codecache.OverflowCodeCacheTest 45 */ 46 47 package compiler.codecache; 48 49 import jdk.test.lib.Asserts; 50 import sun.hotspot.WhiteBox; 51 import sun.hotspot.code.BlobType; 52 import sun.hotspot.code.CodeBlob; 53 54 import java.lang.management.MemoryPoolMXBean; 55 import java.util.ArrayList; 56 import java.util.EnumSet; 57 58 public class OverflowCodeCacheTest { 59 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); 60 61 public static void main(String[] args) { 62 EnumSet<BlobType> blobTypes = BlobType.getAvailable(); 63 for (BlobType type : blobTypes) { 64 new OverflowCodeCacheTest(type).test(); 65 } 66 } 67 68 private final BlobType type; 69 private final MemoryPoolMXBean bean; 70 private OverflowCodeCacheTest(BlobType type) { 71 this.type = type; 72 this.bean = type.getMemoryPool(); 73 } 74 75 private void test() { 76 System.out.printf("type %s%n", type); 77 System.out.println("allocating till possible..."); 78 ArrayList<Long> blobs = new ArrayList<>(); 79 int compilationActivityMode = -1; 80 try { 81 long addr; 82 int size = (int) (getHeapSize() >> 7); 83 while ((addr = WHITE_BOX.allocateCodeBlob(size, type.id)) != 0) { 84 blobs.add(addr); 85 86 BlobType actualType = CodeBlob.getCodeBlob(addr).code_blob_type; 87 if (actualType != type) { 88 // check we got allowed overflow handling 89 Asserts.assertTrue(type.allowTypeWhenOverflow(actualType), 90 type + " doesn't allow using " + actualType + " when overflow"); 91 } 92 } 93 /* now, remember compilationActivityMode to check it later, after freeing, since we 94 possibly have no free cache for futher work */ 95 compilationActivityMode = WHITE_BOX.getCompilationActivityMode(); 96 } finally { 97 for (Long blob : blobs) { 98 WHITE_BOX.freeCodeBlob(blob); 99 } 100 } 101 Asserts.assertNotEquals(compilationActivityMode, 1 /* run_compilation*/, 102 "Compilation must be disabled when CodeCache(CodeHeap) overflows"); 103 } 104 105 private long getHeapSize() { 106 return bean.getUsage().getMax(); 107 } 108 109 }