1 /*
2 * Copyright (c) 2015, 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 #ifndef SHARE_GC_Z_ZHEAP_INLINE_HPP
25 #define SHARE_GC_Z_ZHEAP_INLINE_HPP
26
27 #include "gc/z/zAddress.inline.hpp"
28 #include "gc/z/zForwarding.inline.hpp"
29 #include "gc/z/zForwardingTable.inline.hpp"
30 #include "gc/z/zHash.inline.hpp"
31 #include "gc/z/zHeap.hpp"
32 #include "gc/z/zMark.inline.hpp"
33 #include "gc/z/zOop.inline.hpp"
34 #include "gc/z/zPage.inline.hpp"
35 #include "gc/z/zPageTable.inline.hpp"
36 #include "gc/z/zUtils.inline.hpp"
37 #include "utilities/debug.hpp"
38
39 inline ZHeap* ZHeap::heap() {
40 assert(_heap != NULL, "Not initialized");
41 return _heap;
42 }
43
44 inline ReferenceDiscoverer* ZHeap::reference_discoverer() {
45 return &_reference_processor;
46 }
47
48 inline uint32_t ZHeap::hash_oop(oop obj) const {
49 const uintptr_t offset = ZAddress::offset(ZOop::to_address(obj));
50 return ZHash::address_to_uint32(offset);
51 }
52
53 inline bool ZHeap::is_object_live(uintptr_t addr) const {
54 ZPage* page = _page_table.get(addr);
55 return page->is_object_live(addr);
56 }
57
58 inline bool ZHeap::is_object_strongly_live(uintptr_t addr) const {
59 ZPage* page = _page_table.get(addr);
60 return page->is_object_strongly_live(addr);
61 }
62
63 template <bool finalizable, bool publish>
64 inline void ZHeap::mark_object(uintptr_t addr) {
65 assert(ZGlobalPhase == ZPhaseMark, "Mark not allowed");
66 _mark.mark_object<finalizable, publish>(addr);
67 }
68
69 inline uintptr_t ZHeap::alloc_tlab(size_t size) {
70 guarantee(size <= max_tlab_size(), "TLAB too large");
71 return _object_allocator.alloc_object(size);
72 }
73
74 inline uintptr_t ZHeap::alloc_object(size_t size) {
75 uintptr_t addr = _object_allocator.alloc_object(size);
76 assert(ZAddress::is_good_or_null(addr), "Bad address");
77
78 if (addr == 0) {
79 out_of_memory();
80 }
81
82 return addr;
83 }
84
85 inline uintptr_t ZHeap::alloc_object_for_relocation(size_t size) {
86 uintptr_t addr = _object_allocator.alloc_object_for_relocation(size);
87 assert(ZAddress::is_good_or_null(addr), "Bad address");
88 return addr;
89 }
90
91 inline void ZHeap::undo_alloc_object_for_relocation(uintptr_t addr, size_t size) {
92 ZPage* const page = _page_table.get(addr);
93 _object_allocator.undo_alloc_object_for_relocation(page, addr, size);
94 }
95
96 inline uintptr_t ZHeap::relocate_object(uintptr_t addr) {
97 assert(ZGlobalPhase == ZPhaseRelocate, "Relocate not allowed");
98
99 ZForwarding* const forwarding = _forwarding_table.get(addr);
100 if (forwarding == NULL) {
101 // Not forwarding
102 return ZAddress::good(addr);
103 }
104
105 // Relocate object
106 const bool retained = forwarding->retain_page();
107 const uintptr_t new_addr = _relocate.relocate_object(forwarding, addr);
108 if (retained) {
109 forwarding->release_page();
110 }
111
112 return new_addr;
113 }
114
115 inline uintptr_t ZHeap::remap_object(uintptr_t addr) {
116 assert(ZGlobalPhase == ZPhaseMark ||
117 ZGlobalPhase == ZPhaseMarkCompleted, "Forward not allowed");
118
119 ZForwarding* const forwarding = _forwarding_table.get(addr);
120 if (forwarding == NULL) {
121 // Not forwarding
122 return ZAddress::good(addr);
123 }
124
125 // Forward object
126 return _relocate.forward_object(forwarding, addr);
127 }
128
129 inline bool ZHeap::is_alloc_stalled() const {
130 return _page_allocator.is_alloc_stalled();
131 }
132
133 inline void ZHeap::check_out_of_memory() {
134 _page_allocator.check_out_of_memory();
135 }
136
137 inline bool ZHeap::is_oop(oop object) const {
138 // Verify that we have a good address. Note that ZAddress::is_good()
139 // would not be a strong enough verification, since it only verifies
140 // that the metadata bits are good.
141 const uintptr_t addr = ZOop::to_address(object);
142 return ZAddress::good(addr) == addr;
143 }
144
145 #endif // SHARE_GC_Z_ZHEAP_INLINE_HPP