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_SHARED_GENOOPCLOSURES_INLINE_HPP
26 #define SHARE_VM_GC_SHARED_GENOOPCLOSURES_INLINE_HPP
27
28 #include "gc/serial/defNewGeneration.hpp"
29 #include "gc/shared/cardTableRS.hpp"
30 #include "gc/shared/genCollectedHeap.hpp"
31 #include "gc/shared/genOopClosures.hpp"
32 #include "gc/shared/genRemSet.hpp"
33 #include "gc/shared/generation.hpp"
34 #include "gc/shared/space.hpp"
35
36 inline OopsInGenClosure::OopsInGenClosure(Generation* gen) :
37 ExtendedOopClosure(gen->ref_processor()), _orig_gen(gen), _rs(NULL) {
38 set_generation(gen);
39 }
40
41 inline void OopsInGenClosure::set_generation(Generation* gen) {
42 _gen = gen;
43 _gen_boundary = _gen->reserved().start();
44 // Barrier set for the heap, must be set after heap is initialized
45 if (_rs == NULL) {
46 GenRemSet* rs = GenCollectedHeap::heap()->rem_set();
47 _rs = (CardTableRS*)rs;
48 }
49 }
50
51 template <class T> inline void OopsInGenClosure::do_barrier(T* p) {
52 assert(generation()->is_in_reserved(p), "expected ref in generation");
53 T heap_oop = oopDesc::load_heap_oop(p);
54 assert(!oopDesc::is_null(heap_oop), "expected non-null oop");
55 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
56 // If p points to a younger generation, mark the card.
57 if ((HeapWord*)obj < _gen_boundary) {
58 _rs->inline_write_ref_field_gc(p, obj);
59 }
60 }
61
62 template <class T> inline void OopsInGenClosure::par_do_barrier(T* p) {
63 assert(generation()->is_in_reserved(p), "expected ref in generation");
64 T heap_oop = oopDesc::load_heap_oop(p);
65 assert(!oopDesc::is_null(heap_oop), "expected non-null oop");
66 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
67 // If p points to a younger generation, mark the card.
68 if ((HeapWord*)obj < gen_boundary()) {
69 rs()->write_ref_field_gc_par(p, obj);
70 }
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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_SHARED_GENOOPCLOSURES_INLINE_HPP
26 #define SHARE_VM_GC_SHARED_GENOOPCLOSURES_INLINE_HPP
27
28 #include "gc/serial/defNewGeneration.hpp"
29 #include "gc/shared/cardTableRS.hpp"
30 #include "gc/shared/genCollectedHeap.hpp"
31 #include "gc/shared/genOopClosures.hpp"
32 #include "gc/shared/genRemSet.hpp"
33 #include "gc/shared/generation.hpp"
34 #include "gc/shared/space.hpp"
35
36 inline OopsInGenClosure::OopsInGenClosure(Generation* gen) :
37 ExtendedOopClosure(gen->ref_processor()), _gen(NULL), _rs(NULL) {
38 set_generation(gen);
39 }
40
41 inline void OopsInGenClosure::set_generation(Generation* gen) {
42 assert(_gen == NULL, "Generation already initialized");
43 _gen = gen;
44 _gen_boundary = _gen->reserved().start();
45 // Barrier set for the heap, must be set after heap is initialized
46 if (_rs == NULL) {
47 GenRemSet* rs = GenCollectedHeap::heap()->rem_set();
48 _rs = (CardTableRS*)rs;
49 }
50 }
51
52 inline void OopsInGenClosure::assert_generation(Generation* gen) {
53 assert(_gen == gen, "Generations mismatch. Fix it now!!");
54 }
55
56 template <class T> inline void OopsInGenClosure::do_barrier(T* p) {
57 assert(generation()->is_in_reserved(p), "expected ref in generation");
58 T heap_oop = oopDesc::load_heap_oop(p);
59 assert(!oopDesc::is_null(heap_oop), "expected non-null oop");
60 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
61 // If p points to a younger generation, mark the card.
62 if ((HeapWord*)obj < _gen_boundary) {
63 _rs->inline_write_ref_field_gc(p, obj);
64 }
65 }
66
67 template <class T> inline void OopsInGenClosure::par_do_barrier(T* p) {
68 assert(generation()->is_in_reserved(p), "expected ref in generation");
69 T heap_oop = oopDesc::load_heap_oop(p);
70 assert(!oopDesc::is_null(heap_oop), "expected non-null oop");
71 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
72 // If p points to a younger generation, mark the card.
73 if ((HeapWord*)obj < gen_boundary()) {
74 rs()->write_ref_field_gc_par(p, obj);
75 }
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