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 26 * @bug 8059624 8064669 8153265 27 * @summary testing of WB::forceNMethodSweep 28 * @library /test/lib / 29 * @modules java.base/jdk.internal.misc 30 * java.management 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:-TieredCompilation -XX:+WhiteBoxAPI 36 * -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::* 37 * -XX:-BackgroundCompilation -XX:-UseCounterDecay 38 * compiler.whitebox.ForceNMethodSweepTest 39 */ 40 41 package compiler.whitebox; 42 43 import jdk.test.lib.Asserts; 44 import sun.hotspot.code.BlobType; 45 46 import java.util.EnumSet; 47 48 public class ForceNMethodSweepTest extends CompilerWhiteBoxTest { 49 public static void main(String[] args) throws Exception { 50 CompilerWhiteBoxTest.main(ForceNMethodSweepTest::new, args); 51 } 52 private final EnumSet<BlobType> blobTypes; 53 private ForceNMethodSweepTest(TestCase testCase) { 54 super(testCase); 55 // to prevent inlining of #method 56 WHITE_BOX.testSetDontInlineMethod(method, true); 57 blobTypes = BlobType.getAvailable(); 58 } 59 60 @Override 61 protected void test() throws Exception { 62 // prime the asserts: get their bytecodes loaded, any lazy computation 63 // resolved, and executed once 64 Asserts.assertGT(1, 0, "message"); 65 Asserts.assertLTE(0, 0, "message"); 66 Asserts.assertLT(-1, 0, "message"); 67 68 checkNotCompiled(); 69 guaranteedSweep(); 70 int usage = getTotalUsage(); 71 72 compile(); 73 checkCompiled(); 74 int afterCompilation = getTotalUsage(); 75 Asserts.assertGT(afterCompilation, usage, 76 "compilation should increase usage"); 77 78 guaranteedSweep(); 79 int afterSweep = getTotalUsage(); 80 Asserts.assertLTE(afterSweep, afterCompilation, 81 "sweep shouldn't increase usage"); 82 83 deoptimize(); 84 guaranteedSweep(); 85 int afterDeoptAndSweep = getTotalUsage(); 86 Asserts.assertLT(afterDeoptAndSweep, afterSweep, 87 "sweep after deoptimization should decrease usage"); 88 } 89 90 private int getTotalUsage() { 91 int usage = 0; 92 for (BlobType type : blobTypes) { 93 usage += type.getMemoryPool().getUsage().getUsed(); 94 } 95 return usage; 96 } 97 private void guaranteedSweep() { 98 // not entrant -> ++stack_traversal_mark -> zombie -> flushed 99 for (int i = 0; i < 5; ++i) { 100 WHITE_BOX.fullGC(); 101 WHITE_BOX.forceNMethodSweep(); 102 } 103 } 104 }