src/hotspot/share/gc/shared/barrierSet.cpp
author stefank
Thu, 22 Feb 2018 18:36:07 +0100
changeset 49047 8f004146e407
parent 47998 fb0275c320a0
child 49484 ee8fa73b90f9
permissions -rw-r--r--
8198515: Extract SoftReferencePolicy code out of CollectorPolicy Reviewed-by: pliden, sjohanss
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     1
/*
47998
fb0275c320a0 8189871: Refactor GC barriers to use declarative semantics
eosterlund
parents: 47216
diff changeset
     2
 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     4
 *
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     7
 * published by the Free Software Foundation.
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     8
 *
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    13
 * accompanied this code).
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    14
 *
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4461
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4461
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: 4461
diff changeset
    21
 * questions.
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    22
 *
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    23
 */
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
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: 8921
diff changeset
    26
#include "gc/shared/barrierSet.inline.hpp"
fec48bf5a827 8079792: GC directory structure cleanup
pliden
parents: 8921
diff changeset
    27
#include "gc/shared/collectedHeap.hpp"
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    28
#include "memory/universe.hpp"
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    29
47998
fb0275c320a0 8189871: Refactor GC barriers to use declarative semantics
eosterlund
parents: 47216
diff changeset
    30
BarrierSet* BarrierSet::_bs = NULL;
fb0275c320a0 8189871: Refactor GC barriers to use declarative semantics
eosterlund
parents: 47216
diff changeset
    31
3262
30d1c247fc25 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 1374
diff changeset
    32
// count is number of array elements being written
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    33
void BarrierSet::static_write_ref_array_pre(HeapWord* start, size_t count) {
3262
30d1c247fc25 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 1374
diff changeset
    34
  assert(count <= (size_t)max_intx, "count too large");
30d1c247fc25 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 1374
diff changeset
    35
  if (UseCompressedOops) {
8498
6398004126b9 6627983: G1: Bad oop deference during marking
iveresov
parents: 7397
diff changeset
    36
    Universe::heap()->barrier_set()->write_ref_array_pre((narrowOop*)start, (int)count, false);
3262
30d1c247fc25 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 1374
diff changeset
    37
  } else {
8498
6398004126b9 6627983: G1: Bad oop deference during marking
iveresov
parents: 7397
diff changeset
    38
    Universe::heap()->barrier_set()->write_ref_array_pre(      (oop*)start, (int)count, false);
3262
30d1c247fc25 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 1374
diff changeset
    39
  }
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    40
}
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    41
3262
30d1c247fc25 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 1374
diff changeset
    42
// count is number of array elements being written
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    43
void BarrierSet::static_write_ref_array_post(HeapWord* start, size_t count) {
4461
c17c526d36ef 6906727: UseCompressedOops: some card-marking fixes related to object arrays
ysr
parents: 3262
diff changeset
    44
  // simply delegate to instance method
c17c526d36ef 6906727: UseCompressedOops: some card-marking fixes related to object arrays
ysr
parents: 3262
diff changeset
    45
  Universe::heap()->barrier_set()->write_ref_array(start, count);
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
    46
}