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 PeakUsageTest 26 * @library /test/lib / 27 * @requires vm.flavor != "minimal" 28 * @modules java.base/jdk.internal.misc 29 * java.management 30 * 31 * @build sun.hotspot.WhiteBox 32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 35 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 36 * -XX:+SegmentedCodeCache 37 * compiler.codecache.jmx.PeakUsageTest 38 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 39 * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* 40 * -XX:-SegmentedCodeCache 41 * compiler.codecache.jmx.PeakUsageTest 42 * @summary testing of getPeakUsage() and resetPeakUsage for 43 * segmented code cache 44 */ 45 46 package compiler.codecache.jmx; 47 48 import sun.hotspot.code.BlobType; 49 50 import java.lang.management.MemoryPoolMXBean; 51 52 53 public class PeakUsageTest { 54 55 private final BlobType btype; 56 57 public PeakUsageTest(BlobType btype) { 58 this.btype = btype; 59 } 60 61 public static void main(String[] args) { 62 for (BlobType btype : BlobType.getAvailable()) { 63 new PeakUsageTest(btype).runTest(); 64 } 65 } 66 67 protected void runTest() { 68 MemoryPoolMXBean bean = btype.getMemoryPool(); 69 bean.resetPeakUsage(); 70 long addr = CodeCacheUtils.WB.allocateCodeBlob( 71 CodeCacheUtils.ALLOCATION_SIZE, btype.id); 72 73 try { 74 /* 75 Always save peakUsage after saving currentUsage. Reversing the order 76 can lead to inconsistent results (currentUsage > peakUsage) because 77 of intermediate allocations. 78 */ 79 long currUsage = bean.getUsage().getUsed(); 80 long peakUsage = bean.getPeakUsage().getUsed(); 81 CodeCacheUtils.assertEQorLTE(btype, currUsage, 82 peakUsage, 83 "Peak usage does not match usage after allocation for " 84 + bean.getName()); 85 } finally { 86 if (addr != 0) { 87 CodeCacheUtils.WB.freeCodeBlob(addr); 88 } 89 } 90 bean.resetPeakUsage(); 91 long currUsage = bean.getUsage().getUsed(); 92 long peakUsage = bean.getPeakUsage().getUsed(); 93 CodeCacheUtils.assertEQorLTE(btype, currUsage, 94 peakUsage, 95 "Code cache peak usage is not equal to usage after reset for " 96 + bean.getName()); 97 long addr2 = CodeCacheUtils.WB.allocateCodeBlob( 98 CodeCacheUtils.ALLOCATION_SIZE, btype.id); 99 try { 100 currUsage = bean.getUsage().getUsed(); 101 peakUsage = bean.getPeakUsage().getUsed(); 102 103 CodeCacheUtils.assertEQorLTE(btype, currUsage, 104 peakUsage, 105 "Code cache peak usage is not equal to usage after fresh " 106 + "allocation for " + bean.getName()); 107 } finally { 108 if (addr2 != 0) { 109 CodeCacheUtils.WB.freeCodeBlob(addr2); 110 } 111 } 112 System.out.printf("INFO: Scenario finished successfully for %s%n", 113 bean.getName()); 114 } 115 }