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