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 import jdk.test.lib.Asserts; 25 import java.lang.management.MemoryPoolMXBean; 26 import sun.hotspot.code.BlobType; 27 28 /* 29 * @test UsageThresholdNotExceededTest 30 * @library /testlibrary /test/lib 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * @build UsageThresholdNotExceededTest 34 * @run main ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:-UseCodeCacheFlushing 37 * -XX:-MethodFlushing -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 38 * -XX:+SegmentedCodeCache -XX:CompileCommand=compileonly,null::* 39 * UsageThresholdNotExceededTest 40 * @summary verifying that usage threshold not exceeded while allocating less 41 * than usage threshold 42 */ 43 public class UsageThresholdNotExceededTest { 44 45 private final BlobType btype; 46 47 public UsageThresholdNotExceededTest(BlobType btype) { 48 this.btype = btype; 49 } 50 51 public static void main(String[] args) { 52 for (BlobType btype : BlobType.getAvailable()) { 53 new UsageThresholdNotExceededTest(btype).runTest(); 54 } 55 } 56 57 protected void runTest() { 58 MemoryPoolMXBean bean = btype.getMemoryPool(); 59 long initialThresholdCount = bean.getUsageThresholdCount(); 60 long initialUsage = bean.getUsage().getUsed(); 61 62 bean.setUsageThreshold(initialUsage + 1 + CodeCacheUtils.MIN_ALLOCATION); 63 long size = CodeCacheUtils.getHeaderSize(btype); 64 65 CodeCacheUtils.WB.allocateCodeBlob(Math.max(0, CodeCacheUtils.MIN_ALLOCATION 66 - size), btype.id); 67 // a gc cycle triggers usage threshold recalculation 68 CodeCacheUtils.WB.fullGC(); 69 CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), initialThresholdCount, 70 String.format("Usage threshold was hit: %d times for %s. " 71 + "Threshold value: %d with current usage: %d", 72 bean.getUsageThresholdCount(), bean.getName(), 73 bean.getUsageThreshold(), bean.getUsage().getUsed())); 74 System.out.println("INFO: Case finished successfully for " + bean.getName()); 75 } 76 }