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 * @test GetUsageTest 26 * @summary testing of getUsage() for segmented code cache 27 * @modules java.base/jdk.internal.misc 28 * java.management 29 * @library /testlibrary /test/lib / 30 * 31 * @build compiler.codecache.jmx.GetUsageTest 32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 35 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 36 * -XX:-UseCodeCacheFlushing -XX:-MethodFlushing 37 * -XX:+SegmentedCodeCache 38 * compiler.codecache.jmx.GetUsageTest 39 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 40 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 41 * -XX:-UseCodeCacheFlushing -XX:-MethodFlushing 42 * -XX:-SegmentedCodeCache 43 * compiler.codecache.jmx.GetUsageTest 44 */ 45 46 package compiler.codecache.jmx; 47 48 import jdk.test.lib.Asserts; 49 import sun.hotspot.code.BlobType; 50 51 import java.lang.management.MemoryPoolMXBean; 52 import java.util.HashMap; 53 import java.util.Map; 54 55 public class GetUsageTest { 56 57 private final BlobType btype; 58 private final int allocateSize; 59 60 public GetUsageTest(BlobType btype, int allocSize) { 61 this.btype = btype; 62 this.allocateSize = allocSize; 63 } 64 65 public static void main(String[] args) throws Exception { 66 for (BlobType btype : BlobType.getAvailable()) { 67 for (int allocSize = 10; allocSize < 100000; allocSize *= 10) { 68 new GetUsageTest(btype, allocSize).runTest(); 69 } 70 } 71 } 72 73 protected final Map<MemoryPoolMXBean, Long> getBeanUsages() { 74 Map<MemoryPoolMXBean, Long> beanUsages = new HashMap<>(); 75 for (BlobType bt : BlobType.getAvailable()) { 76 beanUsages.put(bt.getMemoryPool(), 77 bt.getMemoryPool().getUsage().getUsed()); 78 } 79 return beanUsages; 80 } 81 82 protected void runTest() { 83 MemoryPoolMXBean[] predictableBeans = BlobType.getAvailable().stream() 84 .filter(CodeCacheUtils::isCodeHeapPredictable) 85 .map(BlobType::getMemoryPool) 86 .toArray(MemoryPoolMXBean[]::new); 87 Map<MemoryPoolMXBean, Long> initial = getBeanUsages(); 88 long addr = 0; 89 try { 90 addr = CodeCacheUtils.WB.allocateCodeBlob(allocateSize, btype.id); 91 Map<MemoryPoolMXBean, Long> current = getBeanUsages(); 92 long blockCount = Math.floorDiv(allocateSize 93 + CodeCacheUtils.getHeaderSize(btype) 94 + CodeCacheUtils.SEGMENT_SIZE - 1, CodeCacheUtils.SEGMENT_SIZE); 95 long usageUpperEstimate = Math.max(blockCount, 96 CodeCacheUtils.MIN_BLOCK_LENGTH) * CodeCacheUtils.SEGMENT_SIZE; 97 for (MemoryPoolMXBean entry : predictableBeans) { 98 long diff = current.get(entry) - initial.get(entry); 99 if (entry.equals(btype.getMemoryPool())) { 100 if (CodeCacheUtils.isCodeHeapPredictable(btype)) { 101 Asserts.assertFalse(diff <= 0L || diff > usageUpperEstimate, 102 String.format("Pool %s usage increase was reported " 103 + "unexpectedly as increased by %d using " 104 + "allocation size %d", entry.getName(), 105 diff, allocateSize)); 106 } 107 } else { 108 CodeCacheUtils.assertEQorGTE(btype, diff, 0L, 109 String.format("Pool %s usage changed unexpectedly while" 110 + " trying to increase: %s using allocation " 111 + "size %d", entry.getName(), 112 btype.getMemoryPool().getName(), allocateSize)); 113 } 114 } 115 } finally { 116 if (addr != 0) { 117 CodeCacheUtils.WB.freeCodeBlob(addr); 118 } 119 } 120 System.out.printf("INFO: Scenario finished successfully for %s%n", 121 btype.getMemoryPool().getName()); 122 } 123 }