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 UsageThresholdNotExceededTest 26 * @summary verifying that usage threshold not exceeded while allocating less 27 * than usage threshold 28 * @library /test/lib / 29 * @requires vm.flavor != "minimal" 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * 33 * @build sun.hotspot.WhiteBox 34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing 38 * -XX:CompileCommand=compileonly,null::* 39 * -XX:+SegmentedCodeCache 40 * compiler.codecache.jmx.UsageThresholdNotExceededTest 41 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 42 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing 43 * -XX:CompileCommand=compileonly,null::* 44 * -XX:-SegmentedCodeCache 45 * compiler.codecache.jmx.UsageThresholdNotExceededTest 46 */ 47 48 package compiler.codecache.jmx; 49 50 import sun.hotspot.code.BlobType; 51 52 import java.lang.management.MemoryPoolMXBean; 53 54 public class UsageThresholdNotExceededTest { 55 56 private final BlobType btype; 57 58 public UsageThresholdNotExceededTest(BlobType btype) { 59 this.btype = btype; 60 } 61 62 public static void main(String[] args) { 63 for (BlobType btype : BlobType.getAvailable()) { 64 new UsageThresholdNotExceededTest(btype).runTest(); 65 } 66 } 67 68 protected void runTest() { 69 MemoryPoolMXBean bean = btype.getMemoryPool(); 70 long initialThresholdCount = bean.getUsageThresholdCount(); 71 long initialUsage = bean.getUsage().getUsed(); 72 73 bean.setUsageThreshold(initialUsage + 1 + CodeCacheUtils.MIN_ALLOCATION); 74 long size = CodeCacheUtils.getHeaderSize(btype); 75 76 CodeCacheUtils.WB.allocateCodeBlob(Math.max(0, CodeCacheUtils.MIN_ALLOCATION 77 - size), btype.id); 78 // a gc cycle triggers usage threshold recalculation 79 CodeCacheUtils.WB.fullGC(); 80 CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), initialThresholdCount, 81 String.format("Usage threshold was hit: %d times for %s. " 82 + "Threshold value: %d with current usage: %d", 83 bean.getUsageThresholdCount(), bean.getName(), 84 bean.getUsageThreshold(), bean.getUsage().getUsed())); 85 System.out.println("INFO: Case finished successfully for " + bean.getName()); 86 } 87 }