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 GetNMethodTest 27 * @bug 8038240 28 * @summary testing of WB::getNMethod() 29 * @library /test/lib / 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @build sun.hotspot.WhiteBox 33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions 36 * -XX:+WhiteBoxAPI -XX:-UseCounterDecay 37 * -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::* 38 * compiler.whitebox.GetNMethodTest 39 */ 40 41 package compiler.whitebox; 42 43 import jdk.test.lib.Asserts; 44 import sun.hotspot.code.BlobType; 45 import sun.hotspot.code.NMethod; 46 47 public class GetNMethodTest extends CompilerWhiteBoxTest { 48 public static void main(String[] args) throws Exception { 49 CompilerWhiteBoxTest.main(GetNMethodTest::new, args); 50 } 51 52 private GetNMethodTest(TestCase testCase) { 53 super(testCase); 54 // to prevent inlining of #method 55 WHITE_BOX.testSetDontInlineMethod(method, true); 56 } 57 58 @Override 59 protected void test() throws Exception { 60 checkNotCompiled(); 61 62 compile(); 63 checkCompiled(); 64 65 NMethod nmethod = NMethod.get(method, testCase.isOsr()); 66 if (IS_VERBOSE) { 67 System.out.println("nmethod = " + nmethod); 68 } 69 Asserts.assertNotNull(nmethod, 70 "nmethod of compiled method is null"); 71 Asserts.assertNotNull(nmethod.insts, 72 "nmethod.insts of compiled method is null"); 73 Asserts.assertGT(nmethod.insts.length, 0, 74 "compiled method's instructions is empty"); 75 Asserts.assertNotNull(nmethod.code_blob_type, "blob type is null"); 76 if (WHITE_BOX.getBooleanVMFlag("SegmentedCodeCache")) { 77 Asserts.assertNE(nmethod.code_blob_type, BlobType.All); 78 switch (nmethod.comp_level) { 79 case 1: 80 case 4: 81 checkBlockType(nmethod, BlobType.MethodNonProfiled); 82 break; 83 case 2: 84 case 3: 85 checkBlockType(nmethod, BlobType.MethodProfiled); 86 break; 87 default: 88 throw new Error("unexpected comp level " + nmethod); 89 } 90 } else { 91 Asserts.assertEQ(nmethod.code_blob_type, BlobType.All); 92 } 93 94 deoptimize(); 95 checkNotCompiled(); 96 nmethod = NMethod.get(method, testCase.isOsr()); 97 Asserts.assertNull(nmethod, 98 "nmethod of non-compiled method isn't null"); 99 } 100 101 private void checkBlockType(NMethod nmethod, BlobType expectedType) { 102 Asserts.assertEQ(nmethod.code_blob_type, expectedType, 103 String.format("blob_type[%s] for %d level isn't %s", 104 nmethod.code_blob_type, nmethod.comp_level, expectedType)); 105 } 106 }