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 PeakUsageTest 30 * @library /testlibrary /../../test/lib 31 * @modules java.base/sun.misc 32 * java.management 33 * @build PeakUsageTest 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 38 * -XX:CompileCommand=compileonly,null::* PeakUsageTest 39 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 40 * -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache 41 * -XX:CompileCommand=compileonly,null::* PeakUsageTest 42 * @summary testing of getPeakUsage() and resetPeakUsage for 43 * segmented code cache 44 */ 45 public class PeakUsageTest { 46 47 private final BlobType btype; 48 49 public PeakUsageTest(BlobType btype) { 50 this.btype = btype; 51 } 52 53 public static void main(String[] args) { 54 for (BlobType btype : BlobType.getAvailable()) { 55 if (CodeCacheUtils.isCodeHeapPredictable(btype)) { 56 new PeakUsageTest(btype).runTest(); 57 } 58 } 59 } 60 61 protected void runTest() { 62 MemoryPoolMXBean bean = btype.getMemoryPool(); 63 bean.resetPeakUsage(); 64 long addr = CodeCacheUtils.WB.allocateCodeBlob( 65 CodeCacheUtils.ALLOCATION_SIZE, btype.id); 66 long newPeakUsage = bean.getPeakUsage().getUsed(); 67 try { 68 Asserts.assertEQ(newPeakUsage, bean.getUsage().getUsed(), 69 "Peak usage does not match usage after allocation for " 70 + bean.getName()); 71 } finally { 72 if (addr != 0) { 73 CodeCacheUtils.WB.freeCodeBlob(addr); 74 } 75 } 76 Asserts.assertEQ(newPeakUsage, bean.getPeakUsage().getUsed(), 77 "Code cache peak usage has changed after usage decreased for " 78 + bean.getName()); 79 bean.resetPeakUsage(); 80 Asserts.assertEQ(bean.getPeakUsage().getUsed(), 81 bean.getUsage().getUsed(), 82 "Code cache peak usage is not equal to usage after reset for " 83 + bean.getName()); 84 long addr2 = CodeCacheUtils.WB.allocateCodeBlob( 85 CodeCacheUtils.ALLOCATION_SIZE, btype.id); 86 try { 87 Asserts.assertEQ(bean.getPeakUsage().getUsed(), 88 bean.getUsage().getUsed(), 89 "Code cache peak usage is not equal to usage after fresh " 90 + "allocation for " + bean.getName()); 91 } finally { 92 if (addr2 != 0) { 93 CodeCacheUtils.WB.freeCodeBlob(addr2); 94 } 95 } 96 System.out.printf("INFO: Scenario finished successfully for %s%n", 97 bean.getName()); 98 } 99 }