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 "memory/allocation.inline.hpp"
27 #include "oops/constantPool.hpp"
28 #include "oops/oop.inline.hpp"
29 #include "runtime/handles.inline.hpp"
30 #include "runtime/thread.inline.hpp"
31
32 #ifdef ASSERT
33 oop* HandleArea::allocate_handle(oop obj) {
34 assert(_handle_mark_nesting > 1, "memory leak: allocating handle outside HandleMark");
35 assert(_no_handle_mark_nesting == 0, "allocating handle inside NoHandleMark");
36 assert(oopDesc::is_oop(obj), "not an oop: " INTPTR_FORMAT, p2i(obj));
37 return real_allocate_handle(obj);
38 }
39 #endif
40
41 // Copy constructors and destructors for metadata handles
42 // These do too much to inline.
43 #define DEF_METADATA_HANDLE_FN_NOINLINE(name, type) \
44 name##Handle::name##Handle(const name##Handle &h) { \
45 _value = h._value; \
46 if (_value != NULL) { \
47 assert(_value->is_valid(), "obj is valid"); \
48 if (h._thread != NULL) { \
79 if (_value != NULL) { \
80 int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
81 assert(i!=-1, "not in metadata_handles list"); \
82 _thread->metadata_handles()->remove_at(i); \
83 } \
84 } \
85 name##Handle::~name##Handle () { remove(); } \
86
87 DEF_METADATA_HANDLE_FN_NOINLINE(method, Method)
88 DEF_METADATA_HANDLE_FN_NOINLINE(constantPool, ConstantPool)
89
90
91 static uintx chunk_oops_do(OopClosure* f, Chunk* chunk, char* chunk_top) {
92 oop* bottom = (oop*) chunk->bottom();
93 oop* top = (oop*) chunk_top;
94 uintx handles_visited = top - bottom;
95 assert(top >= bottom && top <= (oop*) chunk->top(), "just checking");
96 // during GC phase 3, a handle may be a forward pointer that
97 // is not yet valid, so loosen the assertion
98 while (bottom < top) {
99 f->do_oop(bottom++);
100 }
101 return handles_visited;
102 }
103
104 void HandleArea::oops_do(OopClosure* f) {
105 uintx handles_visited = 0;
106 // First handle the current chunk. It is filled to the high water mark.
107 handles_visited += chunk_oops_do(f, _chunk, _hwm);
108 // Then handle all previous chunks. They are completely filled.
109 Chunk* k = _first;
110 while(k != _chunk) {
111 handles_visited += chunk_oops_do(f, k, k->top());
112 k = k->next();
113 }
114
115 if (_prev != NULL) _prev->oops_do(f);
116 }
117
118 void HandleMark::initialize(Thread* thread) {
119 _thread = thread;
|
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 "memory/allocation.inline.hpp"
27 #include "oops/constantPool.hpp"
28 #include "oops/oop.inline.hpp"
29 #include "oops/valueKlass.hpp"
30 #include "runtime/atomic.hpp"
31 #include "runtime/handles.inline.hpp"
32 #include "runtime/thread.inline.hpp"
33
34 #ifdef ASSERT
35 oop* HandleArea::allocate_handle(oop obj) {
36 assert(_handle_mark_nesting > 1, "memory leak: allocating handle outside HandleMark");
37 assert(_no_handle_mark_nesting == 0, "allocating handle inside NoHandleMark");
38 assert(oopDesc::is_oop(obj), "not an oop: " INTPTR_FORMAT, p2i(obj));
39 return real_allocate_handle(obj);
40 }
41 #endif
42
43 // Copy constructors and destructors for metadata handles
44 // These do too much to inline.
45 #define DEF_METADATA_HANDLE_FN_NOINLINE(name, type) \
46 name##Handle::name##Handle(const name##Handle &h) { \
47 _value = h._value; \
48 if (_value != NULL) { \
49 assert(_value->is_valid(), "obj is valid"); \
50 if (h._thread != NULL) { \
81 if (_value != NULL) { \
82 int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
83 assert(i!=-1, "not in metadata_handles list"); \
84 _thread->metadata_handles()->remove_at(i); \
85 } \
86 } \
87 name##Handle::~name##Handle () { remove(); } \
88
89 DEF_METADATA_HANDLE_FN_NOINLINE(method, Method)
90 DEF_METADATA_HANDLE_FN_NOINLINE(constantPool, ConstantPool)
91
92
93 static uintx chunk_oops_do(OopClosure* f, Chunk* chunk, char* chunk_top) {
94 oop* bottom = (oop*) chunk->bottom();
95 oop* top = (oop*) chunk_top;
96 uintx handles_visited = top - bottom;
97 assert(top >= bottom && top <= (oop*) chunk->top(), "just checking");
98 // during GC phase 3, a handle may be a forward pointer that
99 // is not yet valid, so loosen the assertion
100 while (bottom < top) {
101 if (Universe::heap()->is_in_reserved_or_null(*bottom)) {
102 f->do_oop(bottom);
103 }
104 bottom++;
105 }
106 return handles_visited;
107 }
108
109 void HandleArea::oops_do(OopClosure* f) {
110 uintx handles_visited = 0;
111 // First handle the current chunk. It is filled to the high water mark.
112 handles_visited += chunk_oops_do(f, _chunk, _hwm);
113 // Then handle all previous chunks. They are completely filled.
114 Chunk* k = _first;
115 while(k != _chunk) {
116 handles_visited += chunk_oops_do(f, k, k->top());
117 k = k->next();
118 }
119
120 if (_prev != NULL) _prev->oops_do(f);
121 }
122
123 void HandleMark::initialize(Thread* thread) {
124 _thread = thread;
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