1 /*
2 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include "precompiled.hpp"
25 #include "gc/z/zAttachedArray.inline.hpp"
26 #include "gc/z/zLock.inline.hpp"
27 #include "gc/z/zNMethodData.hpp"
28 #include "memory/allocation.hpp"
29 #include "runtime/atomic.hpp"
30 #include "utilities/align.hpp"
31 #include "utilities/debug.hpp"
32 #include "utilities/growableArray.hpp"
33
create(const GrowableArray<oop * > & immediates,bool has_non_immediates)34 ZNMethodDataOops* ZNMethodDataOops::create(const GrowableArray<oop*>& immediates, bool has_non_immediates) {
35 return ::new (AttachedArray::alloc(immediates.length())) ZNMethodDataOops(immediates, has_non_immediates);
36 }
37
destroy(ZNMethodDataOops * oops)38 void ZNMethodDataOops::destroy(ZNMethodDataOops* oops) {
39 AttachedArray::free(oops);
40 }
41
ZNMethodDataOops(const GrowableArray<oop * > & immediates,bool has_non_immediates)42 ZNMethodDataOops::ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates) :
43 _immediates(immediates.length()),
44 _has_non_immediates(has_non_immediates) {
45 // Save all immediate oops
46 for (size_t i = 0; i < immediates_count(); i++) {
47 immediates_begin()[i] = immediates.at(int(i));
48 }
49 }
50
immediates_count() const51 size_t ZNMethodDataOops::immediates_count() const {
52 return _immediates.length();
53 }
54
immediates_begin() const55 oop** ZNMethodDataOops::immediates_begin() const {
56 return _immediates(this);
57 }
58
immediates_end() const59 oop** ZNMethodDataOops::immediates_end() const {
60 return immediates_begin() + immediates_count();
61 }
62
has_non_immediates() const63 bool ZNMethodDataOops::has_non_immediates() const {
64 return _has_non_immediates;
65 }
66
ZNMethodData()67 ZNMethodData::ZNMethodData() :
68 _lock(),
69 _oops(NULL) {}
70
~ZNMethodData()71 ZNMethodData::~ZNMethodData() {
72 ZNMethodDataOops::destroy(_oops);
73 }
74
lock()75 ZReentrantLock* ZNMethodData::lock() {
76 return &_lock;
77 }
78
oops() const79 ZNMethodDataOops* ZNMethodData::oops() const {
80 return Atomic::load_acquire(&_oops);
81 }
82
swap_oops(ZNMethodDataOops * new_oops)83 ZNMethodDataOops* ZNMethodData::swap_oops(ZNMethodDataOops* new_oops) {
84 ZLocker<ZReentrantLock> locker(&_lock);
85 ZNMethodDataOops* const old_oops = _oops;
86 _oops = new_oops;
87 return old_oops;
88 }
89