1 /*
2 * Copyright (c) 2001, 2014, 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
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
27
28 #include "gc_implementation/g1/g1BlockOffsetTable.hpp"
29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
30 #include "gc_implementation/g1/heapRegion.inline.hpp"
31 #include "memory/space.hpp"
32
33 inline HeapWord* G1BlockOffsetTable::block_start(const void* addr) {
34 if (addr >= _bottom && addr < _end) {
35 return block_start_unsafe(addr);
36 } else {
37 return NULL;
38 }
39 }
40
41 inline HeapWord*
42 G1BlockOffsetTable::block_start_const(const void* addr) const {
43 if (addr >= _bottom && addr < _end) {
44 return block_start_unsafe_const(addr);
45 } else {
46 return NULL;
47 }
48 }
49
50 #define check_index(index, msg) \
51 assert((index) < (_reserved.word_size() >> LogN_words), \
52 err_msg("%s - index: "SIZE_FORMAT", _vs.committed_size: "SIZE_FORMAT, \
53 msg, (index), (_reserved.word_size() >> LogN_words))); \
54 assert(G1CollectedHeap::heap()->is_in_exact(address_for_index_raw(index)), \
55 err_msg("Index "SIZE_FORMAT" corresponding to "PTR_FORMAT \
56 " (%u) is not in committed area.", \
57 (index), \
58 p2i(address_for_index_raw(index)), \
59 G1CollectedHeap::heap()->addr_to_region(address_for_index_raw(index))));
60
61 u_char G1BlockOffsetSharedArray::offset_array(size_t index) const {
62 check_index(index, "index out of range");
63 return _offset_array[index];
64 }
65
66 void G1BlockOffsetSharedArray::set_offset_array(size_t index, u_char offset) {
67 check_index(index, "index out of range");
68 set_offset_array_raw(index, offset);
69 }
70
71 void G1BlockOffsetSharedArray::set_offset_array(size_t index, HeapWord* high, HeapWord* low) {
72 check_index(index, "index out of range");
73 assert(high >= low, "addresses out of order");
74 size_t offset = pointer_delta(high, low);
75 check_offset(offset, "offset too large");
76 set_offset_array(index, (u_char)offset);
77 }
78
79 void G1BlockOffsetSharedArray::set_offset_array(size_t left, size_t right, u_char offset) {
80 check_index(right, "right index out of range");
101 assert(pc >= (char*)_reserved.start() &&
102 pc < (char*)_reserved.end(),
103 err_msg("p (" PTR_FORMAT ") not in reserved [" PTR_FORMAT ", " PTR_FORMAT ")",
104 p2i(p), p2i(_reserved.start()), p2i(_reserved.end())));
105 size_t result = index_for_raw(p);
106 check_index(result, "bad index from address");
107 return result;
108 }
109
110 inline HeapWord*
111 G1BlockOffsetSharedArray::address_for_index(size_t index) const {
112 check_index(index, "index out of range");
113 HeapWord* result = address_for_index_raw(index);
114 assert(result >= _reserved.start() && result < _reserved.end(),
115 err_msg("bad address from index result " PTR_FORMAT
116 " _reserved.start() " PTR_FORMAT " _reserved.end() "
117 PTR_FORMAT,
118 p2i(result), p2i(_reserved.start()), p2i(_reserved.end())));
119 return result;
120 }
121
122 #undef check_index
123
124 inline size_t
125 G1BlockOffsetArray::block_size(const HeapWord* p) const {
126 return gsp()->block_size(p);
127 }
128
129 inline HeapWord*
130 G1BlockOffsetArray::block_at_or_preceding(const void* addr,
131 bool has_max_index,
132 size_t max_index) const {
133 assert(_array->offset_array(0) == 0, "objects can't cross covered areas");
134 size_t index = _array->index_for(addr);
135 // We must make sure that the offset table entry we use is valid. If
136 // "addr" is past the end, start at the last known one and go forward.
137 if (has_max_index) {
138 index = MIN2(index, max_index);
139 }
140 HeapWord* q = _array->address_for_index(index);
141
142 uint offset = _array->offset_array(index); // Extend u_char to uint.
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1 /*
2 * Copyright (c) 2001, 2015, 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
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
27
28 #include "gc_implementation/g1/g1BlockOffsetTable.hpp"
29 #include "gc_implementation/g1/heapRegion.inline.hpp"
30 #include "memory/space.hpp"
31
32 inline HeapWord* G1BlockOffsetTable::block_start(const void* addr) {
33 if (addr >= _bottom && addr < _end) {
34 return block_start_unsafe(addr);
35 } else {
36 return NULL;
37 }
38 }
39
40 inline HeapWord*
41 G1BlockOffsetTable::block_start_const(const void* addr) const {
42 if (addr >= _bottom && addr < _end) {
43 return block_start_unsafe_const(addr);
44 } else {
45 return NULL;
46 }
47 }
48
49 u_char G1BlockOffsetSharedArray::offset_array(size_t index) const {
50 check_index(index, "index out of range");
51 return _offset_array[index];
52 }
53
54 void G1BlockOffsetSharedArray::set_offset_array(size_t index, u_char offset) {
55 check_index(index, "index out of range");
56 set_offset_array_raw(index, offset);
57 }
58
59 void G1BlockOffsetSharedArray::set_offset_array(size_t index, HeapWord* high, HeapWord* low) {
60 check_index(index, "index out of range");
61 assert(high >= low, "addresses out of order");
62 size_t offset = pointer_delta(high, low);
63 check_offset(offset, "offset too large");
64 set_offset_array(index, (u_char)offset);
65 }
66
67 void G1BlockOffsetSharedArray::set_offset_array(size_t left, size_t right, u_char offset) {
68 check_index(right, "right index out of range");
89 assert(pc >= (char*)_reserved.start() &&
90 pc < (char*)_reserved.end(),
91 err_msg("p (" PTR_FORMAT ") not in reserved [" PTR_FORMAT ", " PTR_FORMAT ")",
92 p2i(p), p2i(_reserved.start()), p2i(_reserved.end())));
93 size_t result = index_for_raw(p);
94 check_index(result, "bad index from address");
95 return result;
96 }
97
98 inline HeapWord*
99 G1BlockOffsetSharedArray::address_for_index(size_t index) const {
100 check_index(index, "index out of range");
101 HeapWord* result = address_for_index_raw(index);
102 assert(result >= _reserved.start() && result < _reserved.end(),
103 err_msg("bad address from index result " PTR_FORMAT
104 " _reserved.start() " PTR_FORMAT " _reserved.end() "
105 PTR_FORMAT,
106 p2i(result), p2i(_reserved.start()), p2i(_reserved.end())));
107 return result;
108 }
109
110 inline size_t
111 G1BlockOffsetArray::block_size(const HeapWord* p) const {
112 return gsp()->block_size(p);
113 }
114
115 inline HeapWord*
116 G1BlockOffsetArray::block_at_or_preceding(const void* addr,
117 bool has_max_index,
118 size_t max_index) const {
119 assert(_array->offset_array(0) == 0, "objects can't cross covered areas");
120 size_t index = _array->index_for(addr);
121 // We must make sure that the offset table entry we use is valid. If
122 // "addr" is past the end, start at the last known one and go forward.
123 if (has_max_index) {
124 index = MIN2(index, max_index);
125 }
126 HeapWord* q = _array->address_for_index(index);
127
128 uint offset = _array->offset_array(index); // Extend u_char to uint.
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