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_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
26 #define SHARE_VM_GC_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
27
28 #include "gc/g1/g1BlockOffsetTable.hpp"
29 #include "gc/g1/heapRegion.hpp"
30 #include "gc/shared/memset_with_concurrent_readers.hpp"
31 #include "gc/shared/space.hpp"
32
33 inline HeapWord* G1BlockOffsetTablePart::block_start(const void* addr) {
34 if (addr >= _space->bottom() && addr < _space->end()) {
35 HeapWord* q = block_at_or_preceding(addr, true, _next_offset_index-1);
36 return forward_to_block_containing_addr(q, addr);
37 } else {
38 return NULL;
39 }
40 }
41
42 inline HeapWord* G1BlockOffsetTablePart::block_start_const(const void* addr) const {
43 if (addr >= _space->bottom() && addr < _space->end()) {
44 HeapWord* q = block_at_or_preceding(addr, true, _next_offset_index-1);
45 HeapWord* n = q + block_size(q);
46 return forward_to_block_containing_addr_const(q, n, addr);
47 } else {
48 return NULL;
49 }
50 }
51
52 u_char G1BlockOffsetTable::offset_array(size_t index) const {
53 check_index(index, "index out of range");
54 return _offset_array[index];
55 }
56
57 void G1BlockOffsetTable::set_offset_array(size_t index, u_char offset) {
58 check_index(index, "index out of range");
59 set_offset_array_raw(index, offset);
60 }
61
62 void G1BlockOffsetTable::set_offset_array(size_t index, HeapWord* high, HeapWord* low) {
63 check_index(index, "index out of range");
64 assert(high >= low, "addresses out of order");
65 size_t offset = pointer_delta(high, low);
66 check_offset(offset, "offset too large");
67 set_offset_array(index, (u_char)offset);
68 }
69
70 void G1BlockOffsetTable::set_offset_array(size_t left, size_t right, u_char offset) {
71 check_index(right, "right index out of range");
72 assert(left <= right, "indexes out of order");
73 size_t num_cards = right - left + 1;
74 memset_with_concurrent_readers(&_offset_array[left], offset, num_cards);
75 }
76
77 // Variant of index_for that does not check the index for validity.
78 inline size_t G1BlockOffsetTable::index_for_raw(const void* p) const {
79 return pointer_delta((char*)p, _reserved.start(), sizeof(char)) >> BOTConstants::LogN;
80 }
81
82 inline size_t G1BlockOffsetTable::index_for(const void* p) const {
83 char* pc = (char*)p;
84 assert(pc >= (char*)_reserved.start() &&
85 pc < (char*)_reserved.end(),
86 "p (" PTR_FORMAT ") not in reserved [" PTR_FORMAT ", " PTR_FORMAT ")",
87 p2i(p), p2i(_reserved.start()), p2i(_reserved.end()));
88 size_t result = index_for_raw(p);
89 check_index(result, "bad index from address");
90 return result;
91 }
92
93 inline HeapWord* G1BlockOffsetTable::address_for_index(size_t index) const {
94 check_index(index, "index out of range");
|
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_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
26 #define SHARE_VM_GC_G1_G1BLOCKOFFSETTABLE_INLINE_HPP
27
28 #include "gc/g1/g1BlockOffsetTable.hpp"
29 #include "gc/g1/heapRegion.hpp"
30 #include "gc/shared/memset_with_concurrent_readers.hpp"
31 #include "gc/shared/space.hpp"
32 #include "runtime/atomic.hpp"
33
34 inline HeapWord* G1BlockOffsetTablePart::block_start(const void* addr) {
35 if (addr >= _space->bottom() && addr < _space->end()) {
36 HeapWord* q = block_at_or_preceding(addr, true, _next_offset_index-1);
37 return forward_to_block_containing_addr(q, addr);
38 } else {
39 return NULL;
40 }
41 }
42
43 inline HeapWord* G1BlockOffsetTablePart::block_start_const(const void* addr) const {
44 if (addr >= _space->bottom() && addr < _space->end()) {
45 HeapWord* q = block_at_or_preceding(addr, true, _next_offset_index-1);
46 HeapWord* n = q + block_size(q);
47 return forward_to_block_containing_addr_const(q, n, addr);
48 } else {
49 return NULL;
50 }
51 }
52
53 u_char G1BlockOffsetTable::offset_array(size_t index) const {
54 check_index(index, "index out of range");
55 return Atomic::load(&_offset_array[index]);
56 }
57
58 void G1BlockOffsetTable::set_offset_array(size_t index, u_char offset) {
59 check_index(index, "index out of range");
60 Atomic::store(offset, &_offset_array[index]);
61 }
62
63 void G1BlockOffsetTable::set_offset_array(size_t index, HeapWord* high, HeapWord* low) {
64 check_index(index, "index out of range");
65 assert(high >= low, "addresses out of order");
66 size_t offset = pointer_delta(high, low);
67 check_offset(offset, "offset too large");
68 set_offset_array(index, (u_char)offset);
69 }
70
71 void G1BlockOffsetTable::set_offset_array(size_t left, size_t right, u_char offset) {
72 check_index(right, "right index out of range");
73 assert(left <= right, "indexes out of order");
74 size_t num_cards = right - left + 1;
75 memset_with_concurrent_readers
76 (const_cast<u_char*> (&_offset_array[left]), offset, num_cards);
77 }
78
79 // Variant of index_for that does not check the index for validity.
80 inline size_t G1BlockOffsetTable::index_for_raw(const void* p) const {
81 return pointer_delta((char*)p, _reserved.start(), sizeof(char)) >> BOTConstants::LogN;
82 }
83
84 inline size_t G1BlockOffsetTable::index_for(const void* p) const {
85 char* pc = (char*)p;
86 assert(pc >= (char*)_reserved.start() &&
87 pc < (char*)_reserved.end(),
88 "p (" PTR_FORMAT ") not in reserved [" PTR_FORMAT ", " PTR_FORMAT ")",
89 p2i(p), p2i(_reserved.start()), p2i(_reserved.end()));
90 size_t result = index_for_raw(p);
91 check_index(result, "bad index from address");
92 return result;
93 }
94
95 inline HeapWord* G1BlockOffsetTable::address_for_index(size_t index) const {
96 check_index(index, "index out of range");
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