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 import java.lang.reflect.Method; 26 import java.util.EnumSet; 27 28 import sun.hotspot.WhiteBox; 29 import sun.hotspot.code.BlobType; 30 31 import jdk.test.lib.Asserts; 32 import jdk.test.lib.InfiniteLoop; 33 import compiler.whitebox.CompilerWhiteBoxTest; 34 35 /* 36 * @test 37 * @bug 8059624 8064669 38 * @library /testlibrary /test/lib / 39 * @modules java.management 40 * @build ForceNMethodSweepTest 41 * @run main ClassFileInstaller sun.hotspot.WhiteBox 42 * sun.hotspot.WhiteBox$WhiteBoxPermission 43 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 44 * -XX:-TieredCompilation -XX:+WhiteBoxAPI 45 * -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCase$Helper::* 46 * -XX:-BackgroundCompilation ForceNMethodSweepTest 47 * @summary testing of WB::forceNMethodSweep 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 checkNotCompiled(); 64 guaranteedSweep(); 65 int usage = getTotalUsage(); 66 67 compile(); 68 checkCompiled(); 69 int afterCompilation = getTotalUsage(); 70 Asserts.assertGT(afterCompilation, usage, 71 "compilation should increase usage"); 72 73 guaranteedSweep(); 74 int afterSweep = getTotalUsage(); 75 Asserts.assertLTE(afterSweep, afterCompilation, 76 "sweep shouldn't increase usage"); 77 78 deoptimize(); 79 guaranteedSweep(); 80 int afterDeoptAndSweep = getTotalUsage(); 81 Asserts.assertLT(afterDeoptAndSweep, afterSweep, 82 "sweep after deoptimization should decrease usage"); 83 } 84 85 private int getTotalUsage() { 86 int usage = 0; 87 for (BlobType type : blobTypes) { 88 usage += type.getMemoryPool().getUsage().getUsed(); 89 } 90 return usage; 91 } 92 private void guaranteedSweep() { 93 // not entrant -> ++stack_traversal_mark -> zombie -> flushed 94 for (int i = 0; i < 5; ++i) { 95 WHITE_BOX.fullGC(); 96 WHITE_BOX.forceNMethodSweep(); 97 } 98 } 99 }