1 /* 2 * Copyright (c) 2014, 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 25 import java.lang.management.MemoryPoolMXBean; 26 import java.util.EnumSet; 27 import java.util.ArrayList; 28 29 import sun.hotspot.WhiteBox; 30 import sun.hotspot.code.BlobType; 31 import sun.hotspot.code.CodeBlob; 32 import jdk.test.lib.Asserts; 33 34 /* 35 * @test OverflowCodeCacheTest 36 * @bug 8059550 37 * @library /testlibrary /test/lib 38 * @modules java.base/jdk.internal.misc 39 * @modules java.management 40 * @build OverflowCodeCacheTest 41 * @run main ClassFileInstaller sun.hotspot.WhiteBox 42 * sun.hotspot.WhiteBox$WhiteBoxPermission 43 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 44 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 45 * -XX:-SegmentedCodeCache OverflowCodeCacheTest 46 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 47 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 48 * -XX:+SegmentedCodeCache OverflowCodeCacheTest 49 * @summary testing of code cache segments overflow 50 */ 51 public class OverflowCodeCacheTest { 52 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); 53 54 public static void main(String[] args) { 55 EnumSet<BlobType> blobTypes = BlobType.getAvailable(); 56 for (BlobType type : blobTypes) { 57 new OverflowCodeCacheTest(type).test(); 58 } 59 } 60 61 private final BlobType type; 62 private final MemoryPoolMXBean bean; 63 private OverflowCodeCacheTest(BlobType type) { 64 this.type = type; 65 this.bean = type.getMemoryPool(); 66 } 67 68 private void test() { 69 System.out.printf("type %s%n", type); 70 System.out.println("allocating till possible..."); 71 ArrayList<Long> blobs = new ArrayList<>(); 72 try { 73 long addr; 74 int size = (int) (getHeapSize() >> 7); 75 while ((addr = WHITE_BOX.allocateCodeBlob(size, type.id)) != 0) { 76 blobs.add(addr); 77 78 BlobType actualType = CodeBlob.getCodeBlob(addr).code_blob_type; 79 if (actualType != type) { 80 // check we got allowed overflow handling 81 Asserts.assertTrue(type.allowTypeWhenOverflow(actualType), 82 type + " doesn't allow using " + actualType + " when overflow"); 83 } 84 } 85 Asserts.assertNotEquals(WHITE_BOX.getCompilationActivityMode(), 1 /* run_compilation*/, 86 "Compilation must be disabled when CodeCache(CodeHeap) overflows"); 87 } finally { 88 for (Long blob : blobs) { 89 WHITE_BOX.freeCodeBlob(blob); 90 } 91 } 92 } 93 94 private long getHeapSize() { 95 return bean.getUsage().getMax(); 96 } 97 98 }