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