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 GetNMethodTest 26 * @bug 8038240 27 * @summary testing of WB::getNMethod() 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:. -Xmixed -XX:+UnlockDiagnosticVMOptions 35 * -XX:+WhiteBoxAPI -XX:-UseCounterDecay 36 * -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::* 37 * compiler.whitebox.GetNMethodTest 38 */ 39 40package compiler.whitebox; 41 42import jdk.test.lib.Asserts; 43import sun.hotspot.code.BlobType; 44import sun.hotspot.code.NMethod; 45 46public class GetNMethodTest extends CompilerWhiteBoxTest { 47 public static void main(String[] args) throws Exception { 48 CompilerWhiteBoxTest.main(GetNMethodTest::new, args); 49 } 50 51 private GetNMethodTest(TestCase testCase) { 52 super(testCase); 53 // to prevent inlining of #method 54 WHITE_BOX.testSetDontInlineMethod(method, true); 55 } 56 57 @Override 58 protected void test() throws Exception { 59 checkNotCompiled(); 60 61 compile(); 62 checkCompiled(); 63 64 NMethod nmethod = NMethod.get(method, testCase.isOsr()); 65 if (IS_VERBOSE) { 66 System.out.println("nmethod = " + nmethod); 67 } 68 Asserts.assertNotNull(nmethod, 69 "nmethod of compiled method is null"); 70 Asserts.assertNotNull(nmethod.insts, 71 "nmethod.insts of compiled method is null"); 72 Asserts.assertGT(nmethod.insts.length, 0, 73 "compiled method's instructions is empty"); 74 Asserts.assertNotNull(nmethod.code_blob_type, "blob type is null"); 75 if (WHITE_BOX.getBooleanVMFlag("SegmentedCodeCache")) { 76 Asserts.assertNE(nmethod.code_blob_type, BlobType.All); 77 switch (nmethod.comp_level) { 78 case 1: 79 case 4: 80 checkBlockType(nmethod, BlobType.MethodNonProfiled); 81 break; 82 case 2: 83 case 3: 84 checkBlockType(nmethod, BlobType.MethodProfiled); 85 break; 86 default: 87 throw new Error("unexpected comp level " + nmethod); 88 } 89 } else { 90 Asserts.assertEQ(nmethod.code_blob_type, BlobType.All); 91 } 92 93 deoptimize(); 94 checkNotCompiled(); 95 nmethod = NMethod.get(method, testCase.isOsr()); 96 Asserts.assertNull(nmethod, 97 "nmethod of non-compiled method isn't null"); 98 } 99 100 private void checkBlockType(NMethod nmethod, BlobType expectedType) { 101 Asserts.assertEQ(nmethod.code_blob_type, expectedType, 102 String.format("blob_type[%s] for %d level isn't %s", 103 nmethod.code_blob_type, nmethod.comp_level, expectedType)); 104 } 105} 106