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 "runtime/orderAccess.hpp"
31#include "utilities/align.hpp"
32#include "utilities/debug.hpp"
33#include "utilities/growableArray.hpp"
34
35ZNMethodDataOops* ZNMethodDataOops::create(const GrowableArray<oop*>& immediates, bool has_non_immediates) {
36 return ::new (AttachedArray::alloc(immediates.length())) ZNMethodDataOops(immediates, has_non_immediates);
37}
38
39void ZNMethodDataOops::destroy(ZNMethodDataOops* oops) {
40 AttachedArray::free(oops);
41}
42
43ZNMethodDataOops::ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates) :
44 _immediates(immediates.length()),
45 _has_non_immediates(has_non_immediates) {
46 // Save all immediate oops
47 for (size_t i = 0; i < immediates_count(); i++) {
48 immediates_begin()[i] = immediates.at(i);
49 }
50}
51
52size_t ZNMethodDataOops::immediates_count() const {
53 return _immediates.length();
54}
55
56oop** ZNMethodDataOops::immediates_begin() const {
57 return _immediates(this);
58}
59
60oop** ZNMethodDataOops::immediates_end() const {
61 return immediates_begin() + immediates_count();
62}
63
64bool ZNMethodDataOops::has_non_immediates() const {
65 return _has_non_immediates;
66}
67
68ZNMethodData::ZNMethodData() :
69 _lock(),
70 _oops(NULL) {}
71
72ZNMethodData::~ZNMethodData() {
73 ZNMethodDataOops::destroy(_oops);
74}
75
76ZReentrantLock* ZNMethodData::lock() {
77 return &_lock;
78}
79
80ZNMethodDataOops* ZNMethodData::oops() const {
81 return OrderAccess::load_acquire(&_oops);
82}
83
84ZNMethodDataOops* ZNMethodData::swap_oops(ZNMethodDataOops* new_oops) {
85 ZLocker<ZReentrantLock> locker(&_lock);
86 ZNMethodDataOops* const old_oops = _oops;
87 _oops = new_oops;
88 return old_oops;
89}
90