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