jdk8-mips64-public/hotspot: src/share/vm/oops/compiledICHolderOop.hpp@f8236e79048a

6664627: Merge changes made only in hotspot 11 forward to jdk 7
Reviewed-by: jcoomes

     1 /*

     2  * Copyright 1998-2004 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 // A compiledICHolderOop is a helper object for the inline cache implementation.

    26 // It holds an intermediate value (method+klass pair) used when converting from

    27 // compiled to an interpreted call.

    28 //

    29 // compiledICHolderOops are always allocated permanent (to avoid traversing the

    30 // codeCache during scavenge).

    33 class compiledICHolderOopDesc : public oopDesc {

    34   friend class VMStructs;

    35  private:

    36   methodOop _holder_method;

    37   klassOop  _holder_klass;    // to avoid name conflict with oopDesc::_klass

    38  public:

    39   // accessors

    40   methodOop holder_method() const     { return _holder_method; }

    41   klassOop  holder_klass()  const     { return _holder_klass; }

    43   void set_holder_method(methodOop m) { oop_store_without_check((oop*)&_holder_method, (oop)m); }

    44   void set_holder_klass(klassOop k)   { oop_store_without_check((oop*)&_holder_klass, (oop)k); }

    46   static int header_size()            { return sizeof(compiledICHolderOopDesc)/HeapWordSize; }

    47   static int object_size()            { return align_object_size(header_size()); }

    49   // interpreter support (offsets in bytes)

    50   static int holder_method_offset()   { return offset_of(compiledICHolderOopDesc, _holder_method); }

    51   static int holder_klass_offset()    { return offset_of(compiledICHolderOopDesc, _holder_klass); }

    53   // GC support

    54   oop* adr_holder_method() const      { return (oop*)&_holder_method; }

    55   oop* adr_holder_klass() const       { return (oop*)&_holder_klass; }

    56 };

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