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 /../../test/lib 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 36 * -XX:CompileCommand=compileonly,null::* PeakUsageTest 37 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 38 * -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache 39 * -XX:CompileCommand=compileonly,null::* PeakUsageTest 40 * @summary testing of getPeakUsage() and resetPeakUsage for 41 * segmented code cache 42 */ 43 public class PeakUsageTest { 44 45 private final BlobType btype; 46 47 public PeakUsageTest(BlobType btype) { 48 this.btype = btype; 49 } 50 51 public static void main(String[] args) { 52 for (BlobType btype : BlobType.getAvailable()) { 53 if (CodeCacheUtils.isCodeHeapPredictable(btype)) { 54 new PeakUsageTest(btype).runTest(); 55 } 56 } 57 } 58 59 protected void runTest() { 60 MemoryPoolMXBean bean = btype.getMemoryPool(); 61 bean.resetPeakUsage(); 62 long addr = CodeCacheUtils.WB.allocateCodeBlob( 63 CodeCacheUtils.ALLOCATION_SIZE, btype.id); 64 long newPeakUsage = bean.getPeakUsage().getUsed(); 65 try { 66 Asserts.assertEQ(newPeakUsage, bean.getUsage().getUsed(), 67 "Peak usage does not match usage after allocation for " 68 + bean.getName()); 69 } finally { 70 if (addr != 0) { 71 CodeCacheUtils.WB.freeCodeBlob(addr); 72 } 73 } 74 Asserts.assertEQ(newPeakUsage, bean.getPeakUsage().getUsed(), 75 "Code cache peak usage has changed after usage decreased for " 76 + bean.getName()); 77 bean.resetPeakUsage(); 78 Asserts.assertEQ(bean.getPeakUsage().getUsed(), 79 bean.getUsage().getUsed(), 80 "Code cache peak usage is not equal to usage after reset for " 81 + bean.getName()); 82 long addr2 = CodeCacheUtils.WB.allocateCodeBlob( 83 CodeCacheUtils.ALLOCATION_SIZE, btype.id); 84 try { 85 Asserts.assertEQ(bean.getPeakUsage().getUsed(), 86 bean.getUsage().getUsed(), 87 "Code cache peak usage is not equal to usage after fresh " 88 + "allocation for " + bean.getName()); 89 } finally { 90 if (addr2 != 0) { 91 CodeCacheUtils.WB.freeCodeBlob(addr2); 92 } 93 } 94 System.out.printf("INFO: Scenario finished successfully for %s%n", 95 bean.getName()); 96 } 97 }