1 /* 2 * Copyright (c) 2013, 2014, 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 /testlibrary/com/oracle/java/testlibrary 28 * @build IsMethodCompilableTest 29 * @run main ClassFileInstaller sun.hotspot.WhiteBox 30 * sun.hotspot.WhiteBox$WhiteBoxPermission 31 * @run main ClassFileInstaller com.oracle.java.testlibrary.Platform 32 * @run main/othervm/timeout=2400 -Xbootclasspath/a:. -Xmixed -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:PerMethodRecompilationCutoff=3 -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* IsMethodCompilableTest 33 * @summary testing of WB::isMethodCompilable() 34 * @author igor.ignatyev@oracle.com 35 */ 36 37 import com.oracle.java.testlibrary.Platform; 38 39 public class IsMethodCompilableTest extends CompilerWhiteBoxTest { 40 /** 41 * Value of {@code -XX:PerMethodRecompilationCutoff} 42 */ 43 protected static final long PER_METHOD_RECOMPILATION_CUTOFF; 44 45 static { 46 long tmp = Long.parseLong( 47 getVMOption("PerMethodRecompilationCutoff", "400")); 48 if (tmp == -1) { 49 PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */; 50 } else { 51 PER_METHOD_RECOMPILATION_CUTOFF = (0xFFFFFFFFL & tmp); 52 } 53 } 54 55 public static void main(String[] args) throws Exception { 56 CompilerWhiteBoxTest.main(IsMethodCompilableTest::new, args); 57 } 58 59 private IsMethodCompilableTest(TestCase testCase) { 60 super(testCase); 61 // to prevent inlining of #method 62 WHITE_BOX.testSetDontInlineMethod(method, true); 63 } 64 65 /** 66 * Tests {@code WB::isMethodCompilable()} by recompilation of tested method 67 * 'PerMethodRecompilationCutoff' times and checks compilation status. Also 68 * checks that WB::clearMethodState() clears no-compilable flags. Only 69 * applicable to c2 compiled methods. 70 * 71 * @throws Exception if one of the checks fails. 72 */ 73 @Override 74 protected void test() throws Exception { 75 76 // Only c2 compilations can be disabled through PerMethodRecompilationCutoff 77 if (!Platform.isServer()) { 78 return; 79 } 80 81 if (skipXcompOSR()) { 82 return; 83 } 84 if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 85 throw new RuntimeException(method + " must be compilable"); 86 } 87 System.out.println("PerMethodRecompilationCutoff = " 88 + PER_METHOD_RECOMPILATION_CUTOFF); 89 if (PER_METHOD_RECOMPILATION_CUTOFF == -1) { 90 System.err.println( 91 "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf"); 92 return; 93 } 94 95 // deoptimize 'PerMethodRecompilationCutoff' times 96 for (long attempts = 0, successes = 0; 97 (successes < PER_METHOD_RECOMPILATION_CUTOFF) && 98 (attempts < PER_METHOD_RECOMPILATION_CUTOFF*2) && 99 isCompilable(COMP_LEVEL_FULL_OPTIMIZATION); attempts++) { 100 if (compileAndDeoptimize() == COMP_LEVEL_FULL_OPTIMIZATION) { 101 successes++; 102 } 103 } 104 105 if (!testCase.isOsr() && !isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 106 // in osr test case count of deopt maybe more than iterations 107 throw new RuntimeException(method + " is not compilable after " 108 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations"); 109 } 110 111 // Now compile once more 112 compileAndDeoptimize(); 113 114 if (isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 115 throw new RuntimeException(method + " is still compilable after " 116 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations"); 117 } 118 checkNotCompiled(); 119 compile(); 120 waitBackgroundCompilation(); 121 checkNotCompiled(COMP_LEVEL_FULL_OPTIMIZATION); 122 123 // WB.clearMethodState() must reset no-compilable flags 124 WHITE_BOX.clearMethodState(method); 125 if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { 126 throw new RuntimeException(method 127 + " is not compilable after clearMethodState()"); 128 } 129 compile(); 130 checkCompiled(); 131 } 132 133 private int compileAndDeoptimize() throws Exception { 134 compile(); 135 waitBackgroundCompilation(); 136 int compLevel = getCompLevel(); 137 deoptimize(); 138 return compLevel; 139 } 140 }