jdk8-mips64-public/hotspot: src/share/vm/services/serviceUtil.hpp@fb3190e77d3c

8001592: NMT: assertion failed: assert(_amount >= amt) failed: Just check: memBaseline.hpp:180
Summary: Fixed NMT that miscounted arena memory when it is used as value or stack object.
Reviewed-by: acorn, coleenp

     1 /*

     2  * Copyright (c) 2003, 2012, 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_SERVICES_SERVICEUTIL_HPP

    26 #define SHARE_VM_SERVICES_SERVICEUTIL_HPP

    28 #include "classfile/systemDictionary.hpp"

    29 #include "oops/objArrayOop.hpp"

    31 //

    32 // Serviceability utility functions.

    33 // (Shared by MM and JVMTI).

    34 //

    35 class ServiceUtil : public AllStatic {

    36  public:

    38   // Return true if oop represents an object that is "visible"

    39   // to the java world.

    40   static inline bool visible_oop(oop o) {

    41     // the sentinel for deleted handles isn't visible

    42     if (o == JNIHandles::deleted_handle()) {

    43       return false;

    44     }

    46     // instance

    47     if (o->is_instance()) {

    48       // instance objects are visible

    49       if (o->klass() != SystemDictionary::Class_klass()) {

    50         return true;

    51       }

    52       if (java_lang_Class::is_primitive(o)) {

    53         return true;

    54       }

    55       // java.lang.Classes are visible

    56       Klass* k = java_lang_Class::as_Klass(o);

    57       if (k->is_klass()) {

    58         // if it's a class for an object, an object array, or

    59         // primitive (type) array then it's visible.

    60         Klass* klass = k;

    61         if (Klass::cast(klass)->oop_is_instance()) {

    62           return true;

    63         }

    64         if (Klass::cast(klass)->oop_is_objArray()) {

    65           return true;

    66         }

    67         if (Klass::cast(klass)->oop_is_typeArray()) {

    68           return true;

    69         }

    70       }

    71       return false;

    72     }

    73     // object arrays are visible if they aren't system object arrays

    74     if (o->is_objArray()) {

    75         return true;

    76     }

    77     // type arrays are visible

    78     if (o->is_typeArray()) {

    79       return true;

    80     }

    81     // everything else (Method*s, ...) aren't visible

    82     return false;

    83   };   // end of visible_oop()

    85 };

    87 #endif // SHARE_VM_SERVICES_SERVICEUTIL_HPP

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

src/share/vm/services/serviceUtil.hpp@fb3190e77d3c

src/share/vm/services/serviceUtil.hpp