1 /* 2 * Copyright (c) 2013, 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 * @test IsMethodCompilableTest 26 * @bug 8007270 8006683 8007288 8022832 27 * @library /testlibrary /test/lib 28 * @modules java.base/sun.misc 29 * java.management 30 * @build jdk.test.lib.* sun.hotspot.WhiteBox 31 * @build IsMethodCompilableTest 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main ClassFileInstaller jdk.test.lib.Platform 35 * @run main/othervm/timeout=2400 -Xbootclasspath/a:. -Xmixed -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:PerMethodRecompilationCutoff=3 -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* IsMethodCompilableTest 36 * @summary testing of WB::isMethodCompilable() 37 * @author igor.ignatyev@oracle.com 38 */ 39 40 import jdk.test.lib.Platform; 41 42 public class IsMethodCompilableTest extends CompilerWhiteBoxTest { 43 /** 44 * Value of {@code -XX:PerMethodRecompilationCutoff} 45 */ 46 protected static final long PER_METHOD_RECOMPILATION_CUTOFF; 47 48 static { 49 long tmp = Long.parseLong( 50 getVMOption("PerMethodRecompilationCutoff", "400")); 51 if (tmp == -1) { 52 PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */; 53 } else { 54 PER_METHOD_RECOMPILATION_CUTOFF = (0xFFFFFFFFL & tmp); 55 } 56 } 57 58 public static void main(String[] args) throws Exception { 59 CompilerWhiteBoxTest.main(IsMethodCompilableTest::new, args); 60 } 61 62 private IsMethodCompilableTest(TestCase testCase) { 63 super(testCase); 64 // to prevent inlining of #method 65 WHITE_BOX.testSetDontInlineMethod(method, true); 66 } 67 68 /** 69 * Tests {@code WB::isMethodCompilable()} by recompilation of tested method 70 * 'PerMethodRecompilationCutoff' times and checks compilation status. Also 71 * checks that WB::clearMethodState() clears no-compilable flags. Only 72 * applicable to c2 compiled methods. 73 * 74 * @throws Exception if one of the checks fails. 75 */ 76 @Override 77 protected void test() throws Exception { 78 79 // Only c2 compilations can be disabled through PerMethodRecompilationCutoff 80 if (!Platform.isServer()) { 81 return; 82 } 83 84 if (skipXcompOSR()) { 85 return; 86 } 87 if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 88 throw new RuntimeException(method + " must be compilable"); 89 } 90 System.out.println("PerMethodRecompilationCutoff = " 91 + PER_METHOD_RECOMPILATION_CUTOFF); 92 if (PER_METHOD_RECOMPILATION_CUTOFF == -1) { 93 System.err.println( 94 "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf"); 95 return; 96 } 97 98 // deoptimize 'PerMethodRecompilationCutoff' times 99 for (long attempts = 0, successes = 0; 100 (successes < PER_METHOD_RECOMPILATION_CUTOFF) && 101 (attempts < PER_METHOD_RECOMPILATION_CUTOFF*2) && 102 isCompilable(COMP_LEVEL_FULL_OPTIMIZATION); attempts++) { 103 if (compileAndDeoptimize() == COMP_LEVEL_FULL_OPTIMIZATION) { 104 successes++; 105 } 106 } 107 108 if (!testCase.isOsr() && !isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 109 // in osr test case count of deopt maybe more than iterations 110 throw new RuntimeException(method + " is not compilable after " 111 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations"); 112 } 113 114 // Now compile once more 115 compileAndDeoptimize(); 116 117 if (isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 118 throw new RuntimeException(method + " is still compilable after " 119 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations"); 120 } 121 checkNotCompiled(); 122 compile(); 123 waitBackgroundCompilation(); 124 checkNotCompiled(COMP_LEVEL_FULL_OPTIMIZATION); 125 126 // WB.clearMethodState() must reset no-compilable flags 127 WHITE_BOX.clearMethodState(method); 128 if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 129 throw new RuntimeException(method 130 + " is not compilable after clearMethodState()"); 131 } 132 compile(); 133 checkCompiled(); 134 } 135 136 private int compileAndDeoptimize() throws Exception { 137 compile(); 138 waitBackgroundCompilation(); 139 int compLevel = getCompLevel(); 140 deoptimize(); 141 return compLevel; 142 } 143 }