jdk8-mips64-public/hotspot: src/share/vm/runtime/jniPeriodicChecker.hpp@87770dcf831b

6876794: 4/4 sp07t002 hangs very intermittently
Summary: remove over locking by VMThread on "is thread suspended?" check
Reviewed-by: dholmes, acorn, andrew

     1 /*

     2  * Copyright 2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 class JniPeriodicCheckerTask;

    27 /*

    28  * This gets activated under Xcheck:jni (CheckJNICalls), and is typically

    29  * to detect any errors caused by JNI applications, such as signal handler,

    30  * hijacking, va 0x0 hijacking either by mmap or an OS error.

    31  */

    34 class JniPeriodicChecker : AllStatic {

    36   friend class JniPeriodicCheckerTask;

    38   private:

    39     static JniPeriodicCheckerTask* _task;

    41   public:

    42     // Start/stop task

    43     static void engage();

    44     static void disengage();

    46     static bool is_active() { return _task != NULL; }

    48     static void initialize();

    49     static void destroy();

    50 };

    52 void jniPeriodicChecker_exit();

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

src/share/vm/runtime/jniPeriodicChecker.hpp@87770dcf831b

src/share/vm/runtime/jniPeriodicChecker.hpp