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_G1OOPCLOSURES_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP
27
28 #include "memory/iterator.hpp"
29
30 class HeapRegion;
31 class G1CollectedHeap;
32 class G1RemSet;
33 class ConcurrentMark;
34 class DirtyCardToOopClosure;
35 class CMBitMap;
36 class CMMarkStack;
37 class G1ParScanThreadState;
38 class CMTask;
39 class ReferenceProcessor;
40
41 // A class that scans oops in a given heap region (much as OopsInGenClosure
42 // scans oops in a generation.)
43 class OopsInHeapRegionClosure: public ExtendedOopClosure {
44 protected:
45 HeapRegion* _from;
46 public:
47 void set_region(HeapRegion* from) { _from = from; }
48 };
239 G1CollectedHeap* _g1;
240 G1RemSet* _g1_rem_set;
241 HeapRegion* _from;
242 OopsInHeapRegionClosure* _push_ref_cl;
243 bool _record_refs_into_cset;
244 uint _worker_i;
245
246 public:
247 G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h,
248 G1RemSet* rs,
249 OopsInHeapRegionClosure* push_ref_cl,
250 bool record_refs_into_cset,
251 uint worker_i = 0);
252
253 void set_from(HeapRegion* from) {
254 assert(from != NULL, "from region must be non-NULL");
255 _from = from;
256 }
257
258 bool self_forwarded(oop obj) {
259 bool result = (obj->is_forwarded() && (obj->forwardee()== obj));
260 return result;
261 }
262
263 bool apply_to_weak_ref_discovered_field() { return true; }
264
265 template <class T> void do_oop_nv(T* p);
266 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
267 virtual void do_oop(oop* p) { do_oop_nv(p); }
268 };
269
270 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP
|
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_G1OOPCLOSURES_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP
27
28 #include "memory/iterator.hpp"
29 #include "oops/markOop.hpp"
30
31 class HeapRegion;
32 class G1CollectedHeap;
33 class G1RemSet;
34 class ConcurrentMark;
35 class DirtyCardToOopClosure;
36 class CMBitMap;
37 class CMMarkStack;
38 class G1ParScanThreadState;
39 class CMTask;
40 class ReferenceProcessor;
41
42 // A class that scans oops in a given heap region (much as OopsInGenClosure
43 // scans oops in a generation.)
44 class OopsInHeapRegionClosure: public ExtendedOopClosure {
45 protected:
46 HeapRegion* _from;
47 public:
48 void set_region(HeapRegion* from) { _from = from; }
49 };
240 G1CollectedHeap* _g1;
241 G1RemSet* _g1_rem_set;
242 HeapRegion* _from;
243 OopsInHeapRegionClosure* _push_ref_cl;
244 bool _record_refs_into_cset;
245 uint _worker_i;
246
247 public:
248 G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h,
249 G1RemSet* rs,
250 OopsInHeapRegionClosure* push_ref_cl,
251 bool record_refs_into_cset,
252 uint worker_i = 0);
253
254 void set_from(HeapRegion* from) {
255 assert(from != NULL, "from region must be non-NULL");
256 _from = from;
257 }
258
259 bool self_forwarded(oop obj) {
260 markOop m = obj->mark();
261 bool result = (m->is_marked() && ((oop)m->decode_pointer() == obj));
262 return result;
263 }
264
265 bool apply_to_weak_ref_discovered_field() { return true; }
266
267 template <class T> void do_oop_nv(T* p);
268 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
269 virtual void do_oop(oop* p) { do_oop_nv(p); }
270 };
271
272 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP
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