jdk8-mips64-public/hotspot: test/compiler/whitebox/IsMethodCompilableTest.java@b84fd7d73702

     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  * @library /testlibrary /testlibrary/whitebox

    28  * @build IsMethodCompilableTest

    29  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    30  * @run main/othervm/timeout=600 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI IsMethodCompilableTest

    31  * @author igor.ignatyev@oracle.com

    32  */

    33 public class IsMethodCompilableTest extends CompilerWhiteBoxTest {

    34     protected static final long PER_METHOD_RECOMPILATION_CUTOFF;

    36     static {

    37         long tmp = Long.parseLong(

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

    39         if (tmp == -1) {

    40             PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */;

    41         } else {

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

    43         }

    44     }

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

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

    48         WHITE_BOX.testSetDontInlineMethod(METHOD, true);

    49         new IsMethodCompilableTest().runTest();

    50     }

    52     protected void test() throws Exception {

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

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

    55         }

    56         System.out.println("PerMethodRecompilationCutoff = "

    57                 + PER_METHOD_RECOMPILATION_CUTOFF);

    58         if (PER_METHOD_RECOMPILATION_CUTOFF == -1) {

    59             System.err.println(

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

    61             return;

    62         }

    64         // deoptimze 'PerMethodRecompilationCutoff' times and clear state

    65         for (long i = 0L, n = PER_METHOD_RECOMPILATION_CUTOFF - 1; i < n; ++i) {

    66             compileAndDeoptimaze();

    67         }

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

    69             throw new RuntimeException(METHOD + " is not compilable after "

    70                     + (PER_METHOD_RECOMPILATION_CUTOFF - 1) + " iterations");

    71         }

    72         WHITE_BOX.clearMethodState(METHOD);

    74         // deoptimze 'PerMethodRecompilationCutoff' + 1 times

    75         long i;

    76         for (i = 0L; i < PER_METHOD_RECOMPILATION_CUTOFF

    77                 && WHITE_BOX.isMethodCompilable(METHOD); ++i) {

    78             compileAndDeoptimaze();

    79         }

    80         if (i != PER_METHOD_RECOMPILATION_CUTOFF) {

    81            throw new RuntimeException(METHOD + " is not compilable after "

    82                    + i + " iterations, but must only after "

    83                    + PER_METHOD_RECOMPILATION_CUTOFF);

    84         }

    85         if (WHITE_BOX.isMethodCompilable(METHOD)) {

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

    87                     + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");

    88         }

    89         compile();

    90         checkNotCompiled(METHOD);

    92         WHITE_BOX.clearMethodState(METHOD);

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

    94             throw new RuntimeException(METHOD

    95                     + " is compilable after clearMethodState()");

    96         }

    97         compile();

    98         checkCompiled(METHOD);

    99     }

   101     private void compileAndDeoptimaze() throws Exception {

   102         compile();

   103         waitBackgroundCompilation(METHOD);

   104         WHITE_BOX.deoptimizeMethod(METHOD);

   105     }

   106 }

Mercurial > jdk8-mips64-public > hotspot / file revision