1 /* 2 * Copyright (c) 2013, 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 IsMethodCompilableTest 26 * @bug 8007270 8006683 8007288 8022832 27 * @library /testlibrary /testlibrary/whitebox 28 * @build IsMethodCompilableTest 29 * @run main ClassFileInstaller sun.hotspot.WhiteBox 30 * @run main/othervm/timeout=2400 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* IsMethodCompilableTest 31 * @summary testing of WB::isMethodCompilable() 32 * @author igor.ignatyev@oracle.com 33 */ 34 public class IsMethodCompilableTest extends CompilerWhiteBoxTest { 35 /** 36 * Value of {@code -XX:PerMethodRecompilationCutoff} 37 */ 38 protected static final long PER_METHOD_RECOMPILATION_CUTOFF; 39 40 static { 41 long tmp = Long.parseLong( 42 getVMOption("PerMethodRecompilationCutoff", "400")); 43 if (tmp == -1) { 44 PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */; 45 } else { 46 PER_METHOD_RECOMPILATION_CUTOFF = 1 + (0xFFFFFFFFL & tmp); 47 } 48 } 49 50 public static void main(String[] args) throws Exception { 51 CompilerWhiteBoxTest.main(IsMethodCompilableTest::new, args); 52 } 53 54 private IsMethodCompilableTest(TestCase testCase) { 55 super(testCase); 56 // to prevent inlining of #method 57 WHITE_BOX.testSetDontInlineMethod(method, true); 58 } 59 60 /** 61 * Tests {@code WB::isMethodCompilable()} by recompilation of tested method 62 * 'PerMethodRecompilationCutoff' times and checks compilation status. Also 63 * checks that WB::clearMethodState() clears no-compilable flags. 64 * 65 * @throws Exception if one of the checks fails. 66 */ 67 @Override 68 protected void test() throws Exception { 69 if (testCase.isOsr() && CompilerWhiteBoxTest.MODE.startsWith( 70 "compiled ")) { 71 System.err.printf("Warning: %s is not applicable in %s%n", 72 testCase.name(), CompilerWhiteBoxTest.MODE); 73 return; 74 } 75 if (!isCompilable()) { 76 throw new RuntimeException(method + " must be compilable"); 77 } 78 System.out.println("PerMethodRecompilationCutoff = " 79 + PER_METHOD_RECOMPILATION_CUTOFF); 80 if (PER_METHOD_RECOMPILATION_CUTOFF == -1) { 81 System.err.println( 82 "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf"); 83 return; 84 } 85 86 // deoptimize 'PerMethodRecompilationCutoff' times and clear state 87 for (long i = 0L, n = PER_METHOD_RECOMPILATION_CUTOFF - 1; i < n; ++i) { 88 compileAndDeoptimize(); 89 } 90 if (!testCase.isOsr() && !isCompilable()) { 91 // in osr test case count of deopt maybe more than iterations 92 throw new RuntimeException(method + " is not compilable after " 93 + (PER_METHOD_RECOMPILATION_CUTOFF - 1) + " iterations"); 94 } 95 WHITE_BOX.clearMethodState(method); 96 97 // deoptimize 'PerMethodRecompilationCutoff' + 1 times 98 long i; 99 for (i = 0L; i < PER_METHOD_RECOMPILATION_CUTOFF 100 && isCompilable(); ++i) { 101 compileAndDeoptimize(); 102 } 103 if (!testCase.isOsr() && i != PER_METHOD_RECOMPILATION_CUTOFF) { 104 // in osr test case count of deopt maybe more than iterations 105 throw new RuntimeException(method + " is not compilable after " 106 + i + " iterations, but must only after " 107 + PER_METHOD_RECOMPILATION_CUTOFF); 108 } 109 if (isCompilable()) { 110 throw new RuntimeException(method + " is still compilable after " 111 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations"); 112 } 113 compile(); 114 checkNotCompiled(); 115 116 // WB.clearMethodState() must reset no-compilable flags 117 WHITE_BOX.clearMethodState(method); 118 if (!isCompilable()) { 119 throw new RuntimeException(method 120 + " is not compilable after clearMethodState()"); 121 } 122 compile(); 123 checkCompiled(); 124 } 125 126 private void compileAndDeoptimize() throws Exception { 127 compile(); 128 waitBackgroundCompilation(); 129 deoptimize(); 130 } 131 }