1 /*
 2  * Copyright (c) 2017, 2022, 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
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24 
25 #ifndef SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP
26 #define SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP
27 
28 #include "gc/g1/g1FullGCOopClosures.hpp"
29 
30 #include "gc/g1/g1Allocator.inline.hpp"
31 #include "gc/g1/g1FullCollector.inline.hpp"
32 #include "gc/g1/g1ConcurrentMarkBitMap.inline.hpp"
33 #include "gc/g1/g1FullGCMarker.inline.hpp"
34 #include "gc/g1/heapRegionRemSet.inline.hpp"
35 #include "memory/iterator.inline.hpp"
36 #include "memory/universe.hpp"
37 #include "oops/access.inline.hpp"
38 #include "oops/compressedOops.inline.hpp"
39 #include "oops/oop.inline.hpp"
40 
41 template <typename T>
42 inline void G1MarkAndPushClosure::do_oop_work(T* p) {
43   _marker->mark_and_push(p);
44 }
45 
46 inline void G1MarkAndPushClosure::do_oop(oop* p) {
47   do_oop_work(p);
48 }
49 
50 inline void G1MarkAndPushClosure::do_oop(narrowOop* p) {
51   do_oop_work(p);
52 }
53 
54 template <class T> inline void G1AdjustClosure::adjust_pointer(T* p) {
55   T heap_oop = RawAccess<>::oop_load(p);
56   if (CompressedOops::is_null(heap_oop)) {
57     return;
58   }
59 
60   oop obj = CompressedOops::decode_not_null(heap_oop);
61   assert(Universe::heap()->is_in(obj), "should be in heap");
62   if (!_collector->is_compacting(obj)) {
63     // We never forward objects in non-compacting regions so there is no need to
64     // process them further.
65     return;
66   }
67 
68   if (obj->is_forwarded()) {
69     oop forwardee = obj->forwardee();
70     // Forwarded, just update.
71     assert(G1CollectedHeap::heap()->is_in_reserved(forwardee), "should be in object space");
72     RawAccess<IS_NOT_NULL>::oop_store(p, forwardee);
73   }
74 
75 }
76 
77 inline void G1AdjustClosure::do_oop(oop* p)       { do_oop_work(p); }
78 inline void G1AdjustClosure::do_oop(narrowOop* p) { do_oop_work(p); }
79 
80 inline bool G1IsAliveClosure::do_object_b(oop p) {
81   return _bitmap->is_marked(p);
82 }
83 
84 template<typename T>
85 inline void G1FullKeepAliveClosure::do_oop_work(T* p) {
86   _marker->mark_and_push(p);
87 }
88 
89 #endif // SHARE_GC_G1_G1FULLGCOOPCLOSURES_INLINE_HPP