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 #include "precompiled.hpp"
26 #include "gc/shared/preservedMarks.inline.hpp"
27 #include "gc/shared/workerThread.hpp"
28 #include "gc/shared/workerUtils.hpp"
29 #include "memory/allocation.inline.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "oops/oop.inline.hpp"
32 #include "runtime/atomic.hpp"
33 #include "utilities/macros.hpp"
34
35 void PreservedMarks::restore() {
36 while (!_stack.is_empty()) {
37 const PreservedMark elem = _stack.pop();
38 elem.set_mark();
39 }
40 assert_empty();
41 }
42
43 void PreservedMarks::adjust_preserved_mark(PreservedMark* elem) {
44 oop obj = elem->get_oop();
45 if (obj->is_forwarded()) {
46 elem->set_oop(obj->forwardee());
47 }
48 }
49
50 void PreservedMarks::adjust_during_full_gc() {
51 StackIterator<PreservedMark, mtGC> iter(_stack);
52 while (!iter.is_empty()) {
53 PreservedMark* elem = iter.next_addr();
54 adjust_preserved_mark(elem);
55 }
56 }
57
58 void PreservedMarks::restore_and_increment(volatile size_t* const total_size_addr) {
59 const size_t stack_size = size();
60 restore();
61 // Only do the atomic add if the size is > 0.
62 if (stack_size > 0) {
63 Atomic::add(total_size_addr, stack_size);
64 }
65 }
66
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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 #include "precompiled.hpp"
26 #include "gc/shared/preservedMarks.inline.hpp"
27 #include "gc/shared/slidingForwarding.inline.hpp"
28 #include "gc/shared/workerThread.hpp"
29 #include "gc/shared/workerUtils.hpp"
30 #include "memory/allocation.inline.hpp"
31 #include "memory/resourceArea.hpp"
32 #include "oops/oop.inline.hpp"
33 #include "runtime/atomic.hpp"
34 #include "utilities/macros.hpp"
35
36 void PreservedMarks::restore() {
37 while (!_stack.is_empty()) {
38 const PreservedMark elem = _stack.pop();
39 elem.set_mark();
40 }
41 assert_empty();
42 }
43
44 void PreservedMarks::adjust_preserved_mark(PreservedMark* elem) {
45 oop obj = elem->get_oop();
46 if (SlidingForwarding::is_forwarded(obj)) {
47 elem->set_oop(SlidingForwarding::forwardee(obj));
48 }
49 }
50
51 void PreservedMarks::adjust_during_full_gc() {
52 StackIterator<PreservedMark, mtGC> iter(_stack);
53 while (!iter.is_empty()) {
54 PreservedMark* elem = iter.next_addr();
55 adjust_preserved_mark(elem);
56 }
57 }
58
59 void PreservedMarks::restore_and_increment(volatile size_t* const total_size_addr) {
60 const size_t stack_size = size();
61 restore();
62 // Only do the atomic add if the size is > 0.
63 if (stack_size > 0) {
64 Atomic::add(total_size_addr, stack_size);
65 }
66 }
67
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