jdk8-mips64-public/hotspot: test/compiler/whitebox/IsMethodCompilableTest.java@12e01444ca2d

     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  */

    24 /*

    25  * @test IsMethodCompilableTest

    26  * @bug 8007270

    27  * @compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI CompilerWhiteBoxTest.java

    28  * @compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI IsMethodCompilableTest.java

    29  * @run main/othervm/timeout=600 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI IsMethodCompilableTest

    30  * @author igor.ignatyev@oracle.com

    31  */

    32 public class IsMethodCompilableTest extends CompilerWhiteBoxTest {

    33     protected static final long PER_METHOD_RECOMPILATION_CUTOFF;

    35     static {

    36         long tmp = Long.parseLong(

    37                 getVMOption("PerMethodRecompilationCutoff", "400"));

    38         if (tmp == -1) {

    39             PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */;

    40         } else {

    41             PER_METHOD_RECOMPILATION_CUTOFF = 1 + (0xFFFFFFFFL & tmp);

    42         }

    43     }

    45     public static void main(String[] args) throws Exception {

    46         new IsMethodCompilableTest().runTest();

    47     }

    49     protected void test() throws Exception {

    50         if (!WHITE_BOX.isMethodCompilable(METHOD)) {

    51             throw new RuntimeException(METHOD + " must be compilable");

    52         }

    53         System.out.println("PerMethodRecompilationCutoff = "

    54                 + PER_METHOD_RECOMPILATION_CUTOFF);

    55         if (PER_METHOD_RECOMPILATION_CUTOFF == -1) {

    56             System.err.println(

    57                     "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf");

    58             return;

    59         }

    60         // to prevent inlining #method into #compile()

    61         WHITE_BOX.setDontInlineMethod(METHOD, true);

    62         boolean madeNotCompilable = false;

    64         for (long i = 0; i < PER_METHOD_RECOMPILATION_CUTOFF; ++i) {

    65             compile();

    66             waitBackgroundCompilation(METHOD);

    67             WHITE_BOX.deoptimizeMethod(METHOD);

    68             if (!WHITE_BOX.isMethodCompilable(METHOD)) {

    69                 madeNotCompilable = true;

    70                 break;

    71             }

    72         }

    73         if (!madeNotCompilable) {

    74             throw new RuntimeException(METHOD + " is still compilable after "

    75                     + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");

    76         }

    77         compile();

    78         if (WHITE_BOX.isMethodCompiled(METHOD)) {

    79             printInfo(METHOD);

    80             throw new RuntimeException(

    81                     METHOD + " is not compilable but compiled");

    82         }

    83     }

    84 }

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