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 /testlibrary /test/lib / 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 * 32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @build compiler.codecache.jmx.UsageThresholdNotExceededTest 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 36 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing 37 * -XX:CompileCommand=compileonly,null::* 38 * -XX:+SegmentedCodeCache 39 * compiler.codecache.jmx.UsageThresholdNotExceededTest 40 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 41 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing 42 * -XX:CompileCommand=compileonly,null::* 43 * -XX:-SegmentedCodeCache 44 * compiler.codecache.jmx.UsageThresholdNotExceededTest 45 */ 46 47 package compiler.codecache.jmx; 48 49 import sun.hotspot.code.BlobType; 50 51 import java.lang.management.MemoryPoolMXBean; 52 53 public class UsageThresholdNotExceededTest { 54 55 private final BlobType btype; 56 57 public UsageThresholdNotExceededTest(BlobType btype) { 58 this.btype = btype; 59 } 60 61 public static void main(String[] args) { 62 for (BlobType btype : BlobType.getAvailable()) { 63 new UsageThresholdNotExceededTest(btype).runTest(); 64 } 65 } 66 67 protected void runTest() { 68 MemoryPoolMXBean bean = btype.getMemoryPool(); 69 long initialThresholdCount = bean.getUsageThresholdCount(); 70 long initialUsage = bean.getUsage().getUsed(); 71 72 bean.setUsageThreshold(initialUsage + 1 + CodeCacheUtils.MIN_ALLOCATION); 73 long size = CodeCacheUtils.getHeaderSize(btype); 74 75 CodeCacheUtils.WB.allocateCodeBlob(Math.max(0, CodeCacheUtils.MIN_ALLOCATION 76 - size), btype.id); 77 // a gc cycle triggers usage threshold recalculation 78 CodeCacheUtils.WB.fullGC(); 79 CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), initialThresholdCount, 80 String.format("Usage threshold was hit: %d times for %s. " 81 + "Threshold value: %d with current usage: %d", 82 bean.getUsageThresholdCount(), bean.getName(), 83 bean.getUsageThreshold(), bean.getUsage().getUsed())); 84 System.out.println("INFO: Case finished successfully for " + bean.getName()); 85 } 86 }