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_GC_G1_G1FULLGCPREPARETASK_INLINE_HPP
26 #define SHARE_GC_G1_G1FULLGCPREPARETASK_INLINE_HPP
27
28 #include "gc/g1/g1FullGCPrepareTask.hpp"
29
30 #include "gc/g1/g1CollectedHeap.inline.hpp"
31 #include "gc/g1/g1FullCollector.hpp"
32 #include "gc/g1/g1FullGCCompactionPoint.hpp"
33 #include "gc/g1/g1FullGCScope.hpp"
34 #include "gc/g1/heapRegion.inline.hpp"
35
36 void G1DetermineCompactionQueueClosure::free_empty_humongous_region(HeapRegion* hr) {
37 _g1h->free_humongous_region(hr, nullptr);
38 _collector->set_free(hr->hrm_index());
39 add_to_compaction_queue(hr);
40 }
41
42 inline bool G1DetermineCompactionQueueClosure::should_compact(HeapRegion* hr) const {
43 // There is no need to iterate and forward objects in non-movable regions ie.
44 // prepare them for compaction.
45 if (hr->is_humongous()) {
46 return false;
47 }
48 size_t live_words = _collector->live_words(hr->hrm_index());
49 size_t live_words_threshold = _collector->scope()->region_compaction_threshold();
50 // High live ratio region will not be compacted.
51 return live_words <= live_words_threshold;
52 }
53
54 inline uint G1DetermineCompactionQueueClosure::next_worker() {
84 bool is_empty = !_collector->mark_bitmap()->is_marked(obj);
85 if (is_empty) {
86 free_empty_humongous_region(hr);
87 } else {
88 _collector->set_has_humongous();
89 }
90 } else {
91 assert(MarkSweepDeadRatio > 0,
92 "only skip compaction for other regions when MarkSweepDeadRatio > 0");
93
94 // Too many live objects in the region; skip compacting it.
95 _collector->update_from_compacting_to_skip_compacting(hr->hrm_index());
96 log_trace(gc, phases)("Phase 2: skip compaction region index: %u, live words: " SIZE_FORMAT,
97 hr->hrm_index(), _collector->live_words(hr->hrm_index()));
98 }
99 }
100
101 return false;
102 }
103
104 inline size_t G1SerialRePrepareClosure::apply(oop obj) {
105 if (obj->is_forwarded()) {
106 // We skip objects compiled into the first region or
107 // into regions not part of the serial compaction point.
108 if (cast_from_oop<HeapWord*>(obj->forwardee()) < _dense_prefix_top) {
109 return obj->size();
110 }
111 }
112
113 // Get size and forward.
114 size_t size = obj->size();
115 _cp->forward(obj, size);
116
117 return size;
118 }
119
120 #endif // SHARE_GC_G1_G1FULLGCPREPARETASK_INLINE_HPP
|
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_GC_G1_G1FULLGCPREPARETASK_INLINE_HPP
26 #define SHARE_GC_G1_G1FULLGCPREPARETASK_INLINE_HPP
27
28 #include "gc/g1/g1FullGCPrepareTask.hpp"
29
30 #include "gc/g1/g1CollectedHeap.inline.hpp"
31 #include "gc/g1/g1FullCollector.hpp"
32 #include "gc/g1/g1FullGCCompactionPoint.hpp"
33 #include "gc/g1/g1FullGCScope.hpp"
34 #include "gc/g1/heapRegion.inline.hpp"
35 #include "gc/shared/slidingForwarding.inline.hpp"
36
37 void G1DetermineCompactionQueueClosure::free_empty_humongous_region(HeapRegion* hr) {
38 _g1h->free_humongous_region(hr, nullptr);
39 _collector->set_free(hr->hrm_index());
40 add_to_compaction_queue(hr);
41 }
42
43 inline bool G1DetermineCompactionQueueClosure::should_compact(HeapRegion* hr) const {
44 // There is no need to iterate and forward objects in non-movable regions ie.
45 // prepare them for compaction.
46 if (hr->is_humongous()) {
47 return false;
48 }
49 size_t live_words = _collector->live_words(hr->hrm_index());
50 size_t live_words_threshold = _collector->scope()->region_compaction_threshold();
51 // High live ratio region will not be compacted.
52 return live_words <= live_words_threshold;
53 }
54
55 inline uint G1DetermineCompactionQueueClosure::next_worker() {
85 bool is_empty = !_collector->mark_bitmap()->is_marked(obj);
86 if (is_empty) {
87 free_empty_humongous_region(hr);
88 } else {
89 _collector->set_has_humongous();
90 }
91 } else {
92 assert(MarkSweepDeadRatio > 0,
93 "only skip compaction for other regions when MarkSweepDeadRatio > 0");
94
95 // Too many live objects in the region; skip compacting it.
96 _collector->update_from_compacting_to_skip_compacting(hr->hrm_index());
97 log_trace(gc, phases)("Phase 2: skip compaction region index: %u, live words: " SIZE_FORMAT,
98 hr->hrm_index(), _collector->live_words(hr->hrm_index()));
99 }
100 }
101
102 return false;
103 }
104
105 template <bool ALT_FWD>
106 inline size_t G1SerialRePrepareClosure<ALT_FWD>::apply(oop obj) {
107 if (SlidingForwarding::is_forwarded(obj)) {
108 // We skip objects compiled into the first region or
109 // into regions not part of the serial compaction point.
110 if (cast_from_oop<HeapWord*>(SlidingForwarding::forwardee<ALT_FWD>(obj)) < _dense_prefix_top) {
111 return obj->size();
112 }
113 }
114
115 // Get size and forward.
116 size_t size = obj->size();
117 _cp->forward<ALT_FWD>(obj, size);
118
119 return size;
120 }
121
122 #endif // SHARE_GC_G1_G1FULLGCPREPARETASK_INLINE_HPP
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