hotspot/src/share/vm/oops/compiledICHolder.hpp
author goetz
Wed, 04 Jun 2014 11:56:44 +0200
changeset 25351 7c198a690050
parent 13728 882756847a04
permissions -rw-r--r--
8044775: Improve usage of umbrella header atomic.inline.hpp. Reviewed-by: stefank, kvn
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
     2
 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1
diff changeset
    21
 * questions.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    25
#ifndef SHARE_VM_OOPS_COMPILEDICHOLDEROOP_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    26
#define SHARE_VM_OOPS_COMPILEDICHOLDEROOP_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    27
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    28
#include "oops/oop.hpp"
25351
7c198a690050 8044775: Improve usage of umbrella header atomic.inline.hpp.
goetz
parents: 13728
diff changeset
    29
#include "utilities/macros.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    30
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    31
// A CompiledICHolder* is a helper object for the inline cache implementation.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
// It holds an intermediate value (method+klass pair) used when converting from
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
// compiled to an interpreted call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
//
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    35
// These are always allocated in the C heap and are freed during a
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    36
// safepoint by the ICBuffer logic.  It's unsafe to free them earlier
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    37
// since they might be in use.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    38
//
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    41
class CompiledICHolder : public CHeapObj<mtCompiler> {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    42
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    43
 private:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    44
  static volatile int _live_count; // allocated
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    45
  static volatile int _live_not_claimed_count; // allocated but not yet in use so not
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    46
                                               // reachable by iterating over nmethods
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    47
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    48
  Method* _holder_method;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    49
  Klass*    _holder_klass;    // to avoid name conflict with oopDesc::_klass
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    50
  CompiledICHolder* _next;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    51
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    52
 public:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    53
  // Constructor
25351
7c198a690050 8044775: Improve usage of umbrella header atomic.inline.hpp.
goetz
parents: 13728
diff changeset
    54
  CompiledICHolder(Method* method, Klass* klass);
7c198a690050 8044775: Improve usage of umbrella header atomic.inline.hpp.
goetz
parents: 13728
diff changeset
    55
  ~CompiledICHolder() NOT_DEBUG_RETURN;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    56
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    57
  static int live_count() { return _live_count; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    58
  static int live_not_claimed_count() { return _live_not_claimed_count; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    59
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    60
  // accessors
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    61
  Method* holder_method() const     { return _holder_method; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    62
  Klass*    holder_klass()  const     { return _holder_klass; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    63
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    64
  void set_holder_method(Method* m) { _holder_method = m; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    65
  void set_holder_klass(Klass* k)   { _holder_klass = k; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    66
489c9b5090e2 Initial load
duke
parents:
diff changeset
    67
  // interpreter support (offsets in bytes)
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    68
  static int holder_method_offset()   { return offset_of(CompiledICHolder, _holder_method); }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    69
  static int holder_klass_offset()    { return offset_of(CompiledICHolder, _holder_klass); }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    70
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    71
  CompiledICHolder* next()     { return _next; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    72
  void set_next(CompiledICHolder* n) { _next = n; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    73
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    74
  // Verify
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    75
  void verify_on(outputStream* st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    76
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    77
  // Printing
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    78
  void print_on(outputStream* st) const;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    79
  void print_value_on(outputStream* st) const;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    80
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    81
  const char* internal_name() const { return "{compiledICHolder}"; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7397
diff changeset
    82
25351
7c198a690050 8044775: Improve usage of umbrella header atomic.inline.hpp.
goetz
parents: 13728
diff changeset
    83
  void claim() NOT_DEBUG_RETURN;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    84
};
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    85
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    86
#endif // SHARE_VM_OOPS_COMPILEDICHOLDEROOP_HPP