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 25 /* 26 * @test 27 * @bug 8059624 8064669 8153265 28 * @summary testing of WB::forceNMethodSweep 29 * @library /testlibrary /test/lib / 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @build compiler.whitebox.ForceNMethodSweepTest 33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 36 * -XX:-TieredCompilation -XX:+WhiteBoxAPI 37 * -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::* 38 * -XX:-BackgroundCompilation -XX:-UseCounterDecay 39 * compiler.whitebox.ForceNMethodSweepTest 40 */ 41 42 package compiler.whitebox; 43 44 import jdk.test.lib.Asserts; 45 import sun.hotspot.code.BlobType; 46 47 import java.util.EnumSet; 48 49 public class ForceNMethodSweepTest extends CompilerWhiteBoxTest { 50 public static void main(String[] args) throws Exception { 51 CompilerWhiteBoxTest.main(ForceNMethodSweepTest::new, args); 52 } 53 private final EnumSet<BlobType> blobTypes; 54 private ForceNMethodSweepTest(TestCase testCase) { 55 super(testCase); 56 // to prevent inlining of #method 57 WHITE_BOX.testSetDontInlineMethod(method, true); 58 blobTypes = BlobType.getAvailable(); 59 } 60 61 @Override 62 protected void test() throws Exception { 63 // prime the asserts: get their bytecodes loaded, any lazy computation 64 // resolved, and executed once 65 Asserts.assertGT(1, 0, "message"); 66 Asserts.assertLTE(0, 0, "message"); 67 Asserts.assertLT(-1, 0, "message"); 68 69 checkNotCompiled(); 70 guaranteedSweep(); 71 int usage = getTotalUsage(); 72 73 compile(); 74 checkCompiled(); 75 int afterCompilation = getTotalUsage(); 76 Asserts.assertGT(afterCompilation, usage, 77 "compilation should increase usage"); 78 79 guaranteedSweep(); 80 int afterSweep = getTotalUsage(); 81 Asserts.assertLTE(afterSweep, afterCompilation, 82 "sweep shouldn't increase usage"); 83 84 deoptimize(); 85 guaranteedSweep(); 86 int afterDeoptAndSweep = getTotalUsage(); 87 Asserts.assertLT(afterDeoptAndSweep, afterSweep, 88 "sweep after deoptimization should decrease usage"); 89 } 90 91 private int getTotalUsage() { 92 int usage = 0; 93 for (BlobType type : blobTypes) { 94 usage += type.getMemoryPool().getUsage().getUsed(); 95 } 96 return usage; 97 } 98 private void guaranteedSweep() { 99 // not entrant -> ++stack_traversal_mark -> zombie -> flushed 100 for (int i = 0; i < 5; ++i) { 101 WHITE_BOX.fullGC(); 102 WHITE_BOX.forceNMethodSweep(); 103 } 104 } 105 }