| /* |
| * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test IsMethodCompilableTest |
| * @bug 8007270 8006683 8007288 8022832 |
| * @library /testlibrary /testlibrary/whitebox /testlibrary/com/oracle/java/testlibrary |
| * @build IsMethodCompilableTest |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * @run main ClassFileInstaller com.oracle.java.testlibrary.Platform |
| * @run main/othervm/timeout=2400 -Xbootclasspath/a:. -Xmixed -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:PerMethodRecompilationCutoff=3 -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* IsMethodCompilableTest |
| * @summary testing of WB::isMethodCompilable() |
| * @author igor.ignatyev@oracle.com |
| */ |
| |
| import com.oracle.java.testlibrary.Platform; |
| |
| public class IsMethodCompilableTest extends CompilerWhiteBoxTest { |
| /** |
| * Value of {@code -XX:PerMethodRecompilationCutoff} |
| */ |
| protected static final long PER_METHOD_RECOMPILATION_CUTOFF; |
| |
| static { |
| long tmp = Long.parseLong( |
| getVMOption("PerMethodRecompilationCutoff", "400")); |
| if (tmp == -1) { |
| PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */; |
| } else { |
| PER_METHOD_RECOMPILATION_CUTOFF = (0xFFFFFFFFL & tmp); |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| CompilerWhiteBoxTest.main(IsMethodCompilableTest::new, args); |
| } |
| |
| private IsMethodCompilableTest(TestCase testCase) { |
| super(testCase); |
| // to prevent inlining of #method |
| WHITE_BOX.testSetDontInlineMethod(method, true); |
| } |
| |
| /** |
| * Tests {@code WB::isMethodCompilable()} by recompilation of tested method |
| * 'PerMethodRecompilationCutoff' times and checks compilation status. Also |
| * checks that WB::clearMethodState() clears no-compilable flags. Only |
| * applicable to c2 compiled methods. |
| * |
| * @throws Exception if one of the checks fails. |
| */ |
| @Override |
| protected void test() throws Exception { |
| // Only c2 compilations can be disabled through PerMethodRecompilationCutoff |
| if (!Platform.isServer()) { |
| return; |
| } |
| |
| if (skipXcompOSR()) { |
| return; |
| } |
| if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { |
| throw new RuntimeException(method + " must be compilable"); |
| } |
| System.out.println("PerMethodRecompilationCutoff = " |
| + PER_METHOD_RECOMPILATION_CUTOFF); |
| if (PER_METHOD_RECOMPILATION_CUTOFF == -1) { |
| System.err.println( |
| "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf"); |
| return; |
| } |
| |
| // deoptimize 'PerMethodRecompilationCutoff' times |
| for (long attempts = 0, successes = 0; |
| (successes < PER_METHOD_RECOMPILATION_CUTOFF) && |
| (attempts < PER_METHOD_RECOMPILATION_CUTOFF*2) && |
| isCompilable(COMP_LEVEL_FULL_OPTIMIZATION); attempts++) { |
| if (compileAndDeoptimize() == COMP_LEVEL_FULL_OPTIMIZATION) { |
| successes++; |
| } |
| } |
| |
| if (!testCase.isOsr() && !isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { |
| // in osr test case count of deopt maybe more than iterations |
| throw new RuntimeException(method + " is not compilable after " |
| + PER_METHOD_RECOMPILATION_CUTOFF + " iterations"); |
| } |
| |
| // Now compile once more |
| compileAndDeoptimize(); |
| |
| if (isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { |
| throw new RuntimeException(method + " is still compilable after " |
| + PER_METHOD_RECOMPILATION_CUTOFF + " iterations"); |
| } |
| checkNotCompiled(); |
| compile(); |
| waitBackgroundCompilation(); |
| checkNotCompiled(COMP_LEVEL_FULL_OPTIMIZATION); |
| |
| // WB.clearMethodState() must reset no-compilable flags |
| WHITE_BOX.clearMethodState(method); |
| if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) { |
| throw new RuntimeException(method |
| + " is not compilable after clearMethodState()"); |
| } |
| compile(); |
| checkCompiled(); |
| } |
| |
| private int compileAndDeoptimize() throws Exception { |
| compile(); |
| waitBackgroundCompilation(); |
| int compLevel = getCompLevel(); |
| deoptimize(); |
| return compLevel; |
| } |
| } |