1 /*

     2  * Copyright (c) 2005, 2015, 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 #include "precompiled.hpp"

    26 #include "gc/shared/collectedHeap.hpp"

    27 #include "gc/shared/collectedHeap.inline.hpp"

    28 #include "oops/oopsHierarchy.hpp"

    29 #include "runtime/thread.inline.hpp"

    30 #include "utilities/globalDefinitions.hpp"

    31 

    32 #ifdef CHECK_UNHANDLED_OOPS

    33 

    34 void oop::register_oop() {

    35   assert (CheckUnhandledOops, "should only call when CheckUnhandledOops");

    36   if (!Universe::is_fully_initialized()) return;

    37   // This gets expensive, which is why checking unhandled oops is on a switch.

    38   Thread* t = Thread::current_or_null();

    39   if (t != NULL && t->is_Java_thread()) {

    40      frame fr = os::current_frame();

    41      // This points to the oop creator, I guess current frame points to caller

    42      assert (fr.pc(), "should point to a vm frame");

    43      t->unhandled_oops()->register_unhandled_oop(this, fr.pc());

    44   }

    45 }

    46 

    47 void oop::unregister_oop() {

    48   assert (CheckUnhandledOops, "should only call when CheckUnhandledOops");

    49   if (!Universe::is_fully_initialized()) return;

    50   // This gets expensive, which is why checking unhandled oops is on a switch.

    51   Thread* t = Thread::current_or_null();

    52   if (t != NULL && t->is_Java_thread()) {

    53     t->unhandled_oops()->unregister_unhandled_oop(this);

    54   }

    55 }

    56 #endif // CHECK_UNHANDLED_OOPS