jdk8-mips64-public/hotspot: src/share/vm/oops/instanceRefKlass.hpp@ddd894528dbc

7056328: JSR 292 invocation sometimes fails in adapters for types not on boot class path
Reviewed-by: never

     1 /*

     2  * Copyright (c) 1997, 2010, 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  */

    25 #ifndef SHARE_VM_OOPS_INSTANCEREFKLASS_HPP

    26 #define SHARE_VM_OOPS_INSTANCEREFKLASS_HPP

    28 #include "oops/instanceKlass.hpp"

    30 // An instanceRefKlass is a specialized instanceKlass for Java

    31 // classes that are subclasses of java/lang/ref/Reference.

    32 //

    33 // These classes are used to implement soft/weak/final/phantom

    34 // references and finalization, and need special treatment by the

    35 // garbage collector.

    36 //

    37 // During GC discovered reference objects are added (chained) to one

    38 // of the four lists below, depending on the type of reference.

    39 // The linked occurs through the next field in class java/lang/ref/Reference.

    40 //

    41 // Afterwards, the discovered references are processed in decreasing

    42 // order of reachability. Reference objects eligible for notification

    43 // are linked to the static pending_list in class java/lang/ref/Reference,

    44 // and the pending list lock object in the same class is notified.

    47 class instanceRefKlass: public instanceKlass {

    48  public:

    49   // Type testing

    50   bool oop_is_instanceRef() const             { return true; }

    52   // Casting from klassOop

    53   static instanceRefKlass* cast(klassOop k) {

    54     assert(k->klass_part()->oop_is_instanceRef(), "cast to instanceRefKlass");

    55     return (instanceRefKlass*) k->klass_part();

    56   }

    58   // allocation

    59   DEFINE_ALLOCATE_PERMANENT(instanceRefKlass);

    61   // Garbage collection

    62   int  oop_adjust_pointers(oop obj);

    63   void oop_follow_contents(oop obj);

    65   // Parallel Scavenge and Parallel Old

    66   PARALLEL_GC_DECLS

    68   int oop_oop_iterate(oop obj, OopClosure* blk) {

    69     return oop_oop_iterate_v(obj, blk);

    70   }

    71   int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {

    72     return oop_oop_iterate_v_m(obj, blk, mr);

    73   }

    75 #define InstanceRefKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix)                \

    76   int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk);                         \

    77   int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr);

    79   ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DECL)

    80   ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_DECL)

    82 #ifndef SERIALGC

    83 #define InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix)      \

    84   int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);

    86   ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)

    87   ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)

    88 #endif // !SERIALGC

    90   static void release_and_notify_pending_list_lock(BasicLock *pending_list_basic_lock);

    91   static void acquire_pending_list_lock(BasicLock *pending_list_basic_lock);

    92   static bool owns_pending_list_lock(JavaThread* thread);

    94   // Update non-static oop maps so 'referent', 'nextPending' and

    95   // 'discovered' will look like non-oops

    96   static void update_nonstatic_oop_maps(klassOop k);

    98  public:

    99   // Verification

   100   void oop_verify_on(oop obj, outputStream* st);

   101 };

   103 #endif // SHARE_VM_OOPS_INSTANCEREFKLASS_HPP

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