1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/compiler/whitebox/IsMethodCompilableTest.java Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,138 @@
1.4 +/*
1.5 + * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test IsMethodCompilableTest
1.29 + * @bug 8007270 8006683 8007288 8022832
1.30 + * @library /testlibrary /testlibrary/whitebox /testlibrary/com/oracle/java/testlibrary
1.31 + * @build IsMethodCompilableTest
1.32 + * @run main ClassFileInstaller sun.hotspot.WhiteBox
1.33 + * @run main ClassFileInstaller com.oracle.java.testlibrary.Platform
1.34 + * @run main/othervm/timeout=2400 -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:PerMethodRecompilationCutoff=3 -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* IsMethodCompilableTest
1.35 + * @summary testing of WB::isMethodCompilable()
1.36 + * @author igor.ignatyev@oracle.com
1.37 + */
1.38 +
1.39 +import com.oracle.java.testlibrary.Platform;
1.40 +
1.41 +public class IsMethodCompilableTest extends CompilerWhiteBoxTest {
1.42 + /**
1.43 + * Value of {@code -XX:PerMethodRecompilationCutoff}
1.44 + */
1.45 + protected static final long PER_METHOD_RECOMPILATION_CUTOFF;
1.46 +
1.47 + static {
1.48 + long tmp = Long.parseLong(
1.49 + getVMOption("PerMethodRecompilationCutoff", "400"));
1.50 + if (tmp == -1) {
1.51 + PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */;
1.52 + } else {
1.53 + PER_METHOD_RECOMPILATION_CUTOFF = (0xFFFFFFFFL & tmp);
1.54 + }
1.55 + }
1.56 +
1.57 + public static void main(String[] args) throws Exception {
1.58 + CompilerWhiteBoxTest.main(IsMethodCompilableTest::new, args);
1.59 + }
1.60 +
1.61 + private IsMethodCompilableTest(TestCase testCase) {
1.62 + super(testCase);
1.63 + // to prevent inlining of #method
1.64 + WHITE_BOX.testSetDontInlineMethod(method, true);
1.65 + }
1.66 +
1.67 + /**
1.68 + * Tests {@code WB::isMethodCompilable()} by recompilation of tested method
1.69 + * 'PerMethodRecompilationCutoff' times and checks compilation status. Also
1.70 + * checks that WB::clearMethodState() clears no-compilable flags. Only
1.71 + * applicable to c2 compiled methods.
1.72 + *
1.73 + * @throws Exception if one of the checks fails.
1.74 + */
1.75 + @Override
1.76 + protected void test() throws Exception {
1.77 + // Only c2 compilations can be disabled through PerMethodRecompilationCutoff
1.78 + if (!Platform.isServer()) {
1.79 + return;
1.80 + }
1.81 +
1.82 + if (skipXcompOSR()) {
1.83 + return;
1.84 + }
1.85 + if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
1.86 + throw new RuntimeException(method + " must be compilable");
1.87 + }
1.88 + System.out.println("PerMethodRecompilationCutoff = "
1.89 + + PER_METHOD_RECOMPILATION_CUTOFF);
1.90 + if (PER_METHOD_RECOMPILATION_CUTOFF == -1) {
1.91 + System.err.println(
1.92 + "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf");
1.93 + return;
1.94 + }
1.95 +
1.96 + // deoptimize 'PerMethodRecompilationCutoff' times
1.97 + for (long attempts = 0, successes = 0;
1.98 + (successes < PER_METHOD_RECOMPILATION_CUTOFF) &&
1.99 + (attempts < PER_METHOD_RECOMPILATION_CUTOFF*2) &&
1.100 + isCompilable(COMP_LEVEL_FULL_OPTIMIZATION); attempts++) {
1.101 + if (compileAndDeoptimize() == COMP_LEVEL_FULL_OPTIMIZATION) {
1.102 + successes++;
1.103 + }
1.104 + }
1.105 +
1.106 + if (!testCase.isOsr() && !isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
1.107 + // in osr test case count of deopt maybe more than iterations
1.108 + throw new RuntimeException(method + " is not compilable after "
1.109 + + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");
1.110 + }
1.111 +
1.112 + // Now compile once more
1.113 + compileAndDeoptimize();
1.114 +
1.115 + if (isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
1.116 + throw new RuntimeException(method + " is still compilable after "
1.117 + + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");
1.118 + }
1.119 + checkNotCompiled();
1.120 + compile();
1.121 + waitBackgroundCompilation();
1.122 + checkNotCompiled(COMP_LEVEL_FULL_OPTIMIZATION);
1.123 +
1.124 + // WB.clearMethodState() must reset no-compilable flags
1.125 + WHITE_BOX.clearMethodState(method);
1.126 + if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
1.127 + throw new RuntimeException(method
1.128 + + " is not compilable after clearMethodState()");
1.129 + }
1.130 + compile();
1.131 + checkCompiled();
1.132 + }
1.133 +
1.134 + private int compileAndDeoptimize() throws Exception {
1.135 + compile();
1.136 + waitBackgroundCompilation();
1.137 + int compLevel = getCompLevel();
1.138 + deoptimize();
1.139 + return compLevel;
1.140 + }
1.141 +}
