jdk8-mips64-public/hotspot: test/compiler/stable/StableConfiguration.java@dbb05f6d93c4

8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on
Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn

     1 /*

     2  * Copyright (c) 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 package java.lang.invoke;

    27 import java.lang.reflect.Method;

    28 import java.util.Properties;

    29 import sun.hotspot.WhiteBox;

    31 public class StableConfiguration {

    32     static final WhiteBox WB = WhiteBox.getWhiteBox();

    33     static final boolean isStableEnabled;

    34     static final boolean isServerWithStable;

    36     static {

    37         Boolean value = WB.getBooleanVMFlag("FoldStableValues");

    38         isStableEnabled = (value == null ? false : value);

    39         isServerWithStable = isStableEnabled && get();

    40         System.out.println("@Stable:         " + (isStableEnabled ? "enabled" : "disabled"));

    41         System.out.println("Server Compiler: " + get());

    42     }

    44     // ::get() is among immediately compiled methods.

    45     static boolean get() {

    46         try {

    47             Method m = StableConfiguration.class.getDeclaredMethod("get");

    48             int level = WB.getMethodCompilationLevel(m);

    49             if (level > 0) {

    50               return (level == 4);

    51             } else {

    52               String javaVM = System.getProperty("java.vm.name", "");

    53               if (javaVM.contains("Server")) return true;

    54               if (javaVM.contains("Client")) return false;

    55               throw new Error("Unknown VM type: "+javaVM);

    56             }

    57         } catch (NoSuchMethodException e) {

    58             throw new Error(e);

    59         }

    60     }

    62 }

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

test/compiler/stable/StableConfiguration.java@dbb05f6d93c4

test/compiler/stable/StableConfiguration.java