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 import jdk.test.lib.Asserts; 25 import java.lang.management.MemoryPoolMXBean; 26 import sun.hotspot.code.BlobType; 27 28 /* 29 * @test UsageThresholdIncreasedTest 30 * @library /testlibrary /../../test/lib 31 * @modules java.base/sun.misc 32 * java.management 33 * @build UsageThresholdIncreasedTest 34 * @run main ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache -XX:-UseCodeCacheFlushing 38 * -XX:-MethodFlushing -XX:CompileCommand=compileonly,null::* 39 * UsageThresholdIncreasedTest 40 * @summary verifying that threshold hasn't been hit after allocation smaller 41 * than threshold value and that threshold value can be changed 42 */ 43 public class UsageThresholdIncreasedTest { 44 45 private static final int ALLOCATION_STEP = 5; 46 private static final long THRESHOLD_STEP = ALLOCATION_STEP 47 * CodeCacheUtils.MIN_ALLOCATION; 48 private final BlobType btype; 49 50 public UsageThresholdIncreasedTest(BlobType btype) { 51 this.btype = btype; 52 } 53 54 public static void main(String[] args) { 55 for (BlobType btype : BlobType.getAvailable()) { 56 if (CodeCacheUtils.isCodeHeapPredictable(btype)) { 57 new UsageThresholdIncreasedTest(btype).runTest(); 58 } 59 } 60 } 61 62 private void checkUsageThresholdCount(MemoryPoolMXBean bean, long count){ 63 Asserts.assertEQ(bean.getUsageThresholdCount(), count, 64 String.format("Usage threshold was hit: %d times for %s " 65 + "Threshold value: %d with current usage: %d", 66 bean.getUsageThresholdCount(), bean.getName(), 67 bean.getUsageThreshold(), bean.getUsage().getUsed())); 68 } 69 70 protected void runTest() { 71 long headerSize = CodeCacheUtils.getHeaderSize(btype); 72 long allocationUnit = CodeCacheUtils.MIN_ALLOCATION - headerSize; 73 MemoryPoolMXBean bean = btype.getMemoryPool(); 74 long initialCount = bean.getUsageThresholdCount(); 75 long initialSize = bean.getUsage().getUsed(); 76 bean.setUsageThreshold(initialSize + THRESHOLD_STEP); 77 for (int i = 0; i < ALLOCATION_STEP - 1; i++) { 78 CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id); 79 } 80 // Usage threshold check is triggered by GC cycle, so, call it 81 CodeCacheUtils.WB.fullGC(); 82 checkUsageThresholdCount(bean, initialCount); 83 long filledSize = bean.getUsage().getUsed(); 84 bean.setUsageThreshold(filledSize + THRESHOLD_STEP); 85 for (int i = 0; i < ALLOCATION_STEP - 1; i++) { 86 CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id); 87 } 88 CodeCacheUtils.WB.fullGC(); 89 checkUsageThresholdCount(bean, initialCount); 90 System.out.println("INFO: Case finished successfully for " + bean.getName()); 91 } 92 }