1 /*

     2  * Copyright (c) 2018, 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  */

    23 

    24 

    25 /*

    26  * @test

    27  *

    28  * @summary converted from VM Testbase vm/mlvm/indy/stress/java/volatileCallSiteDekker.

    29  * VM Testbase keywords: [feature_mlvm, nonconcurrent]

    30  * VM Testbase readme:

    31  * DESCRIPTION

    32  *    The test tries to detect a stale handle in VolatileCallSite due to store-after-load reordering in

    33  *    modern CPU.

    34  *    The current Oracle Hotspot JVM implementation uses an internal mutex when relinking a call site,

    35  *    which serves as memory barrier between store and load in this test, so I never saw it failing.

    36  *

    37  * @library /vmTestbase

    38  *          /test/lib

    39  *

    40  * @comment build actor

    41  * @build vm.mlvm.indy.stress.java.volatileCallSiteDekker.Actor

    42  *

    43  * @run driver jdk.test.lib.FileInstaller . .

    44  *

    45  * @comment build test class and indify classes

    46  * @build vm.mlvm.share.DekkerTest

    47  * @run driver vm.mlvm.share.IndifiedClassesBuilder

    48  *

    49  * @run main/othervm

    50  *      vm.mlvm.share.DekkerTest

    51  *      -actorClass vm.mlvm.indy.stress.java.volatileCallSiteDekker.Actor

    52  *      -iterations 100000

    53  *      -runs 30

    54  */

    55