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_OOPS_INSTANCEREFKLASS_INLINE_HPP
26 #define SHARE_VM_OOPS_INSTANCEREFKLASS_INLINE_HPP
27
28 #include "classfile/javaClasses.hpp"
29 #include "gc/shared/referenceProcessor.hpp"
30 #include "oops/instanceKlass.inline.hpp"
31 #include "oops/instanceRefKlass.hpp"
32 #include "oops/oop.inline.hpp"
33 #include "utilities/debug.hpp"
34 #include "utilities/globalDefinitions.hpp"
35 #include "utilities/macros.hpp"
36
37 template <bool nv, typename T, class OopClosureType, class Contains>
38 void InstanceRefKlass::oop_oop_iterate_ref_processing_specialized(oop obj, OopClosureType* closure, Contains& contains) {
39 T* disc_addr = (T*)java_lang_ref_Reference::discovered_addr(obj);
40 if (closure->apply_to_weak_ref_discovered_field()) {
41 Devirtualizer<nv>::do_oop(closure, disc_addr);
42 }
43
44 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj);
45 T heap_oop = oopDesc::load_heap_oop(referent_addr);
46 ReferenceProcessor* rp = closure->ref_processor();
47 if (!oopDesc::is_null(heap_oop)) {
48 oop referent = oopDesc::decode_heap_oop_not_null(heap_oop);
49 if (!referent->is_gc_marked() && (rp != NULL) &&
50 rp->discover_reference(obj, reference_type())) {
51 return;
52 } else if (contains(referent_addr)) {
53 // treat referent as normal oop
54 Devirtualizer<nv>::do_oop(closure, referent_addr);
55 }
56 }
57 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj);
58 T next_oop = oopDesc::load_heap_oop(next_addr);
59 // Treat discovered as normal oop, if ref is not "active" (next non-NULL)
60 if (!oopDesc::is_null(next_oop) && contains(disc_addr)) {
61 // i.e. ref is not "active"
62 debug_only(
63 if(TraceReferenceGC && PrintGCDetails) {
64 gclog_or_tty->print_cr(" Process discovered as normal "
65 PTR_FORMAT, p2i(disc_addr));
66 }
67 )
68 Devirtualizer<nv>::do_oop(closure, disc_addr);
69 }
70 // treat next as normal oop
71 if (contains(next_addr)) {
72 Devirtualizer<nv>::do_oop(closure, next_addr);
73 }
74 }
75
76 class AlwaysContains {
77 public:
78 template <typename T> bool operator()(T* p) const { return true; }
79 };
80
81 template <bool nv, class OopClosureType>
82 void InstanceRefKlass::oop_oop_iterate_ref_processing(oop obj, OopClosureType* closure) {
83 AlwaysContains always_contains;
84 if (UseCompressedOops) {
85 oop_oop_iterate_ref_processing_specialized<nv, narrowOop>(obj, closure, always_contains);
86 } else {
87 oop_oop_iterate_ref_processing_specialized<nv, oop>(obj, closure, always_contains);
|
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_OOPS_INSTANCEREFKLASS_INLINE_HPP
26 #define SHARE_VM_OOPS_INSTANCEREFKLASS_INLINE_HPP
27
28 #include "classfile/javaClasses.hpp"
29 #include "gc/shared/referenceProcessor.hpp"
30 #include "logging/log.hpp"
31 #include "oops/instanceKlass.inline.hpp"
32 #include "oops/instanceRefKlass.hpp"
33 #include "oops/oop.inline.hpp"
34 #include "utilities/debug.hpp"
35 #include "utilities/globalDefinitions.hpp"
36 #include "utilities/macros.hpp"
37
38 template <bool nv, typename T, class OopClosureType, class Contains>
39 void InstanceRefKlass::oop_oop_iterate_ref_processing_specialized(oop obj, OopClosureType* closure, Contains& contains) {
40 T* disc_addr = (T*)java_lang_ref_Reference::discovered_addr(obj);
41 if (closure->apply_to_weak_ref_discovered_field()) {
42 Devirtualizer<nv>::do_oop(closure, disc_addr);
43 }
44
45 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj);
46 T heap_oop = oopDesc::load_heap_oop(referent_addr);
47 ReferenceProcessor* rp = closure->ref_processor();
48 if (!oopDesc::is_null(heap_oop)) {
49 oop referent = oopDesc::decode_heap_oop_not_null(heap_oop);
50 if (!referent->is_gc_marked() && (rp != NULL) &&
51 rp->discover_reference(obj, reference_type())) {
52 return;
53 } else if (contains(referent_addr)) {
54 // treat referent as normal oop
55 Devirtualizer<nv>::do_oop(closure, referent_addr);
56 }
57 }
58 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj);
59 T next_oop = oopDesc::load_heap_oop(next_addr);
60 // Treat discovered as normal oop, if ref is not "active" (next non-NULL)
61 if (!oopDesc::is_null(next_oop) && contains(disc_addr)) {
62 // i.e. ref is not "active"
63 log_develop_trace(gc, ref)(" Process discovered as normal " PTR_FORMAT, p2i(disc_addr));
64 Devirtualizer<nv>::do_oop(closure, disc_addr);
65 }
66 // treat next as normal oop
67 if (contains(next_addr)) {
68 Devirtualizer<nv>::do_oop(closure, next_addr);
69 }
70 }
71
72 class AlwaysContains {
73 public:
74 template <typename T> bool operator()(T* p) const { return true; }
75 };
76
77 template <bool nv, class OopClosureType>
78 void InstanceRefKlass::oop_oop_iterate_ref_processing(oop obj, OopClosureType* closure) {
79 AlwaysContains always_contains;
80 if (UseCompressedOops) {
81 oop_oop_iterate_ref_processing_specialized<nv, narrowOop>(obj, closure, always_contains);
82 } else {
83 oop_oop_iterate_ref_processing_specialized<nv, oop>(obj, closure, always_contains);
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