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 * @test InitialAndMaxUsageTest 26 * @summary testing of initial and max usage 27 * @modules java.base/jdk.internal.misc 28 * java.management 29 * @library /testlibrary /test/lib / 30 * 31 * @build compiler.codecache.jmx.InitialAndMaxUsageTest 32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main/othervm -Xbootclasspath/a:. -XX:-UseCodeCacheFlushing 35 * -XX:-MethodFlushing -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 36 * -XX:CompileCommand=compileonly,null::* -XX:-UseLargePages 37 * -XX:+SegmentedCodeCache 38 * compiler.codecache.jmx.InitialAndMaxUsageTest 39 */ 40 41 package compiler.codecache.jmx; 42 43 import jdk.test.lib.Asserts; 44 import sun.hotspot.code.BlobType; 45 46 import java.lang.management.MemoryPoolMXBean; 47 import java.util.ArrayList; 48 import java.util.List; 49 50 public class InitialAndMaxUsageTest { 51 52 private static final double CACHE_USAGE_COEF = 0.95d; 53 private final BlobType btype; 54 private final boolean lowerBoundIsZero; 55 private final long maxSize; 56 57 public InitialAndMaxUsageTest(BlobType btype) { 58 this.btype = btype; 59 this.maxSize = btype.getSize(); 60 /* Only profiled code cache initial size should be 0, because of 61 -XX:CompileCommand=compileonly,null::* non-methods might be not empty, 62 as well as non-profiled methods, because it's used as fallback in 63 case non-methods is full */ 64 lowerBoundIsZero = btype == BlobType.MethodProfiled; 65 } 66 67 public static void main(String[] args) { 68 for (BlobType btype : BlobType.getAvailable()) { 69 new InitialAndMaxUsageTest(btype).runTest(); 70 } 71 } 72 73 private void fillWithSize(long size, List<Long> blobs) { 74 long blob; 75 while ((blob = CodeCacheUtils.WB.allocateCodeBlob(size, btype.id)) 76 != 0L) { 77 blobs.add(blob); 78 } 79 } 80 81 protected void runTest() { 82 long headerSize = CodeCacheUtils.getHeaderSize(btype); 83 MemoryPoolMXBean bean = btype.getMemoryPool(); 84 long initialUsage = btype.getMemoryPool().getUsage().getUsed(); 85 System.out.printf("INFO: trying to test %s of max size %d and initial" 86 + " usage %d%n", bean.getName(), maxSize, initialUsage); 87 Asserts.assertLT(initialUsage + headerSize + 1L, maxSize, 88 "Initial usage is close to total size for " + bean.getName()); 89 if (lowerBoundIsZero) { 90 Asserts.assertEQ(initialUsage, 0L, "Unexpected initial usage"); 91 } 92 ArrayList<Long> blobs = new ArrayList<>(); 93 long minAllocationUnit = Math.max(0, CodeCacheUtils.MIN_ALLOCATION - headerSize); 94 /* now filling code cache with large-sized allocation first, since 95 lots of small allocations takes too much time, so, just a small 96 optimization */ 97 try { 98 for (int coef = 1000000; coef > 0; coef /= 10) { 99 fillWithSize(coef * minAllocationUnit, blobs); 100 } 101 Asserts.assertGT((double) bean.getUsage().getUsed(), 102 CACHE_USAGE_COEF * maxSize, String.format("Unable to fill " 103 + "more than %f of %s. Reported usage is %d ", 104 CACHE_USAGE_COEF, bean.getName(), 105 bean.getUsage().getUsed())); 106 } finally { 107 for (long entry : blobs) { 108 CodeCacheUtils.WB.freeCodeBlob(entry); 109 } 110 } 111 System.out.printf("INFO: Scenario finished successfully for %s%n", 112 bean.getName()); 113 } 114 115 }