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