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