src/hotspot/share/gc/parallel/adjoiningVirtualSpaces.cpp
author phh
Sat, 30 Nov 2019 14:33:05 -0800
changeset 59330 5b96c12f909d
parent 51332 c25572739e7c
permissions -rw-r--r--
8234541: C1 emits an empty message when it inlines successfully Summary: Use "inline" as the message when successfull Reviewed-by: thartmann, mdoerr Contributed-by: navy.xliu@gmail.com
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
30764
fec48bf5a827 8079792: GC directory structure cleanup
pliden
parents: 14743
diff changeset
     2
 * Copyright (c) 2003, 2015, 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
#include "precompiled.hpp"
30764
fec48bf5a827 8079792: GC directory structure cleanup
pliden
parents: 14743
diff changeset
    26
#include "gc/parallel/adjoiningVirtualSpaces.hpp"
14743
ce8a60f3dbe3 8004674: Add necessary .inline.hpp files to fix non-PCH build
stefank
parents: 7397
diff changeset
    27
#include "memory/allocation.inline.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    28
#include "runtime/java.hpp"
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    29
489c9b5090e2 Initial load
duke
parents:
diff changeset
    30
AdjoiningVirtualSpaces::AdjoiningVirtualSpaces(ReservedSpace rs,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
                                               size_t min_low_byte_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
                                               size_t min_high_byte_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
                                               size_t alignment) :
51332
c25572739e7c 8208669: GC changes to allow enabling -Wreorder
tschatzl
parents: 47216
diff changeset
    34
  _high(NULL), _low(NULL),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
  _reserved_space(rs), _min_low_byte_size(min_low_byte_size),
51332
c25572739e7c 8208669: GC changes to allow enabling -Wreorder
tschatzl
parents: 47216
diff changeset
    36
  _min_high_byte_size(min_high_byte_size),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
  _alignment(alignment) {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
// The maximum byte sizes are for the initial layout of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
// virtual spaces and are not the limit on the maximum bytes sizes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    41
void AdjoiningVirtualSpaces::initialize(size_t max_low_byte_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    42
                                        size_t init_low_byte_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    43
                                        size_t init_high_byte_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    44
489c9b5090e2 Initial load
duke
parents:
diff changeset
    45
  // The reserved spaces for the two parts of the virtual space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    46
  ReservedSpace old_rs   = _reserved_space.first_part(max_low_byte_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
    47
  ReservedSpace young_rs = _reserved_space.last_part(max_low_byte_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
    48
489c9b5090e2 Initial load
duke
parents:
diff changeset
    49
  _low = new PSVirtualSpace(old_rs, alignment());
489c9b5090e2 Initial load
duke
parents:
diff changeset
    50
  if (!_low->expand_by(init_low_byte_size)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    51
    vm_exit_during_initialization("Could not reserve enough space for "
489c9b5090e2 Initial load
duke
parents:
diff changeset
    52
                                  "object heap");
489c9b5090e2 Initial load
duke
parents:
diff changeset
    53
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    54
489c9b5090e2 Initial load
duke
parents:
diff changeset
    55
  _high = new PSVirtualSpaceHighToLow(young_rs, alignment());
489c9b5090e2 Initial load
duke
parents:
diff changeset
    56
  if (!_high->expand_by(init_high_byte_size)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    57
    vm_exit_during_initialization("Could not reserve enough space for "
489c9b5090e2 Initial load
duke
parents:
diff changeset
    58
                                  "object heap");
489c9b5090e2 Initial load
duke
parents:
diff changeset
    59
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    60
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    61
489c9b5090e2 Initial load
duke
parents:
diff changeset
    62
bool AdjoiningVirtualSpaces::adjust_boundary_up(size_t change_in_bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    63
  assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
    64
  size_t actual_change = low()->expand_into(high(), change_in_bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
    65
  return actual_change != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    66
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    67
489c9b5090e2 Initial load
duke
parents:
diff changeset
    68
bool AdjoiningVirtualSpaces::adjust_boundary_down(size_t change_in_bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    69
  assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
    70
  size_t actual_change = high()->expand_into(low(), change_in_bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
    71
  return actual_change != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    72
}