1 /* 2 * Copyright (c) 2014, 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 com.oracle.java.testlibrary.Asserts; 25 import java.lang.management.MemoryPoolMXBean; 26 import sun.hotspot.code.BlobType; 27 28 /* 29 * @test PeakUsageTest 30 * @library /testlibrary /testlibrary/whitebox 31 * @build PeakUsageTest 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 35 * -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache PeakUsageTest 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache PeakUsageTest 38 * @summary testing of getPeakUsage() and resetPeakUsage for 39 * segmented code cache 40 */ 41 public class PeakUsageTest { 42 43 private final BlobType btype; 44 45 public PeakUsageTest(BlobType btype) { 46 this.btype = btype; 47 } 48 49 public static void main(String[] args) { 50 for (BlobType btype : BlobType.getAvailable()) { 51 new PeakUsageTest(btype).runTest(); 52 } 53 } 54 55 protected void runTest() { 56 MemoryPoolMXBean bean = btype.getMemoryPool(); 57 bean.resetPeakUsage(); 58 long addr = CodeCacheUtils.allocateDefaultSize(btype); 59 long newPeakUsage = bean.getPeakUsage().getUsed(); 60 try { 61 Asserts.assertEQ(newPeakUsage, bean.getUsage().getUsed(), 62 "Peak usage does not match usage after allocation for " 63 + bean.getName()); 64 } finally { 65 CodeCacheUtils.WB.freeCodeBlob(addr); 66 } 67 Asserts.assertEQ(newPeakUsage, bean.getPeakUsage().getUsed(), 68 "Code cache peak usage has changed after usage decreased for " 69 + bean.getName()); 70 bean.resetPeakUsage(); 71 Asserts.assertEQ(bean.getPeakUsage().getUsed(), 72 bean.getUsage().getUsed(), 73 "Code cache peak usage is not equal to usage after reset for " 74 + bean.getName()); 75 long addr2 = CodeCacheUtils.allocateDefaultSize(btype); 76 try { 77 Asserts.assertEQ(bean.getPeakUsage().getUsed(), 78 bean.getUsage().getUsed(), 79 "Code cache peak usage is not equal to usage after fresh " 80 + "allocation for " + bean.getName()); 81 } finally { 82 CodeCacheUtils.WB.freeCodeBlob(addr2); 83 } 84 System.out.printf("INFO: Scenario finished successfully for %s%n", 85 bean.getName()); 86 } 87 }