jdk8-mips64-public/hotspot: src/share/vm/oops/constMethodKlass.hpp@5f24d0319e54

4360113: Evict nmethods when code cache gets full
Summary: Speculatively unload the oldest nmethods when code cache gets full.
Reviewed-by: never, kvn
Contributed-by: eric.caspole@amd.com

     1 /*

     2  * Copyright 2003-2009 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 constMethodKlass is the klass of a constMethodOop

    27 class constMethodKlass : public Klass {

    28   friend class VMStructs;

    29 private:

    30   juint    _alloc_size;        // allocation profiling support

    31 public:

    32   // Testing

    33   bool oop_is_constMethod() const { return true; }

    34   virtual bool oop_is_parsable(oop obj) const;

    35   virtual bool oop_is_conc_safe(oop obj) const;

    38   // Allocation

    39   DEFINE_ALLOCATE_PERMANENT(constMethodKlass);

    40   constMethodOop allocate(int byte_code_size, int compressed_line_number_size,

    41                           int localvariable_table_length,

    42                           int checked_exceptions_length,

    43                           bool is_conc_safe,

    44                           TRAPS);

    45   static klassOop create_klass(TRAPS);

    47   // Sizing

    48   int oop_size(oop obj) const;

    49   int klass_oop_size() const     { return object_size(); }

    51   // Casting from klassOop

    52   static constMethodKlass* cast(klassOop k) {

    53     assert(k->klass_part()->oop_is_constMethod(), "cast to constMethodKlass");

    54     return (constMethodKlass*) k->klass_part();

    55   }

    57   // Sizing

    58   static int header_size() {

    59     return oopDesc::header_size() + sizeof(constMethodKlass)/HeapWordSize;

    60   }

    61   int object_size() const {

    62     return align_object_size(header_size());

    63   }

    65   // Garbage collection

    66   void oop_follow_contents(oop obj);

    67   int  oop_adjust_pointers(oop obj);

    69   // Parallel Scavenge and Parallel Old

    70   PARALLEL_GC_DECLS

    72   // Allocation profiling support

    73   juint alloc_size() const              { return _alloc_size; }

    74   void set_alloc_size(juint n)          { _alloc_size = n; }

    76   // Iterators

    77   int oop_oop_iterate(oop obj, OopClosure* blk);

    78   int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);

    80  public:

    81   // Printing

    82   void oop_print_value_on(oop obj, outputStream* st);

    83 #ifndef PRODUCT

    84   void oop_print_on      (oop obj, outputStream* st);

    85 #endif //PRODUCT

    87   // Verify operations

    88   const char* internal_name() const;

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

    90   bool oop_partially_loaded(oop obj) const;

    91   void oop_set_partially_loaded(oop obj);

    92 };

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

src/share/vm/oops/constMethodKlass.hpp@5f24d0319e54

src/share/vm/oops/constMethodKlass.hpp