Mercurial > hg > truffle
annotate src/share/vm/oops/constMethodKlass.cpp @ 6255:113f4c73df61
Merge
author | jmasa |
---|---|
date | Tue, 24 Jul 2012 14:48:58 -0700 |
parents | 8150fa46d2ed |
children |
rev | line source |
---|---|
0 | 1 /* |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1155
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1155
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1155
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "gc_implementation/shared/markSweep.inline.hpp" | |
27 #include "interpreter/interpreter.hpp" | |
28 #include "memory/gcLocker.hpp" | |
29 #include "memory/resourceArea.hpp" | |
30 #include "oops/constMethodKlass.hpp" | |
31 #include "oops/constMethodOop.hpp" | |
32 #include "oops/oop.inline.hpp" | |
33 #include "oops/oop.inline2.hpp" | |
34 #include "runtime/handles.inline.hpp" | |
0 | 35 |
36 | |
37 klassOop constMethodKlass::create_klass(TRAPS) { | |
38 constMethodKlass o; | |
39 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); | |
40 KlassHandle k = base_create_klass(h_this_klass, header_size(), | |
41 o.vtbl_value(), CHECK_NULL); | |
42 // Make sure size calculation is right | |
43 assert(k()->size() == align_object_size(header_size()), | |
44 "wrong size for object"); | |
45 //java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror | |
46 return k(); | |
47 } | |
48 | |
49 | |
50 int constMethodKlass::oop_size(oop obj) const { | |
51 assert(obj->is_constMethod(), "must be constMethod oop"); | |
52 return constMethodOop(obj)->object_size(); | |
53 } | |
54 | |
55 bool constMethodKlass::oop_is_parsable(oop obj) const { | |
56 assert(obj->is_constMethod(), "must be constMethod oop"); | |
57 return constMethodOop(obj)->object_is_parsable(); | |
58 } | |
59 | |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
0
diff
changeset
|
60 bool constMethodKlass::oop_is_conc_safe(oop obj) const { |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
0
diff
changeset
|
61 assert(obj->is_constMethod(), "must be constMethod oop"); |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
0
diff
changeset
|
62 return constMethodOop(obj)->is_conc_safe(); |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
0
diff
changeset
|
63 } |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
0
diff
changeset
|
64 |
0 | 65 constMethodOop constMethodKlass::allocate(int byte_code_size, |
66 int compressed_line_number_size, | |
67 int localvariable_table_length, | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
68 int exception_table_length, |
0 | 69 int checked_exceptions_length, |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
0
diff
changeset
|
70 bool is_conc_safe, |
0 | 71 TRAPS) { |
72 | |
73 int size = constMethodOopDesc::object_size(byte_code_size, | |
74 compressed_line_number_size, | |
75 localvariable_table_length, | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
76 exception_table_length, |
0 | 77 checked_exceptions_length); |
78 KlassHandle h_k(THREAD, as_klassOop()); | |
79 constMethodOop cm = (constMethodOop) | |
80 CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL); | |
81 assert(!cm->is_parsable(), "Not yet safely parsable"); | |
82 No_Safepoint_Verifier no_safepoint; | |
83 cm->set_interpreter_kind(Interpreter::invalid); | |
84 cm->init_fingerprint(); | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
85 cm->set_constants(NULL); |
0 | 86 cm->set_stackmap_data(NULL); |
87 cm->set_code_size(byte_code_size); | |
88 cm->set_constMethod_size(size); | |
89 cm->set_inlined_tables_length(checked_exceptions_length, | |
90 compressed_line_number_size, | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
91 localvariable_table_length, |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
92 exception_table_length); |
0 | 93 assert(cm->size() == size, "wrong size for object"); |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
0
diff
changeset
|
94 cm->set_is_conc_safe(is_conc_safe); |
0 | 95 cm->set_partially_loaded(); |
96 assert(cm->is_parsable(), "Is safely parsable by gc"); | |
97 return cm; | |
98 } | |
99 | |
100 void constMethodKlass::oop_follow_contents(oop obj) { | |
101 assert (obj->is_constMethod(), "object must be constMethod"); | |
102 constMethodOop cm = constMethodOop(obj); | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
103 MarkSweep::mark_and_push(cm->adr_constants()); |
0 | 104 MarkSweep::mark_and_push(cm->adr_stackmap_data()); |
105 // Performance tweak: We skip iterating over the klass pointer since we | |
106 // know that Universe::constMethodKlassObj never moves. | |
107 } | |
108 | |
109 #ifndef SERIALGC | |
110 void constMethodKlass::oop_follow_contents(ParCompactionManager* cm, | |
111 oop obj) { | |
112 assert (obj->is_constMethod(), "object must be constMethod"); | |
113 constMethodOop cm_oop = constMethodOop(obj); | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
114 PSParallelCompact::mark_and_push(cm, cm_oop->adr_constants()); |
0 | 115 PSParallelCompact::mark_and_push(cm, cm_oop->adr_stackmap_data()); |
116 // Performance tweak: We skip iterating over the klass pointer since we | |
117 // know that Universe::constMethodKlassObj never moves. | |
118 } | |
119 #endif // SERIALGC | |
120 | |
121 int constMethodKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
122 assert (obj->is_constMethod(), "object must be constMethod"); | |
123 constMethodOop cm = constMethodOop(obj); | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
124 blk->do_oop(cm->adr_constants()); |
0 | 125 blk->do_oop(cm->adr_stackmap_data()); |
126 // Get size before changing pointers. | |
127 // Don't call size() or oop_size() since that is a virtual call. | |
128 int size = cm->object_size(); | |
129 return size; | |
130 } | |
131 | |
132 | |
133 int constMethodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
134 assert (obj->is_constMethod(), "object must be constMethod"); | |
135 constMethodOop cm = constMethodOop(obj); | |
136 oop* adr; | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
137 adr = cm->adr_constants(); |
0 | 138 if (mr.contains(adr)) blk->do_oop(adr); |
139 adr = cm->adr_stackmap_data(); | |
140 if (mr.contains(adr)) blk->do_oop(adr); | |
141 // Get size before changing pointers. | |
142 // Don't call size() or oop_size() since that is a virtual call. | |
143 int size = cm->object_size(); | |
144 // Performance tweak: We skip iterating over the klass pointer since we | |
145 // know that Universe::constMethodKlassObj never moves. | |
146 return size; | |
147 } | |
148 | |
149 | |
150 int constMethodKlass::oop_adjust_pointers(oop obj) { | |
151 assert(obj->is_constMethod(), "should be constMethod"); | |
152 constMethodOop cm = constMethodOop(obj); | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
153 MarkSweep::adjust_pointer(cm->adr_constants()); |
0 | 154 MarkSweep::adjust_pointer(cm->adr_stackmap_data()); |
155 // Get size before changing pointers. | |
156 // Don't call size() or oop_size() since that is a virtual call. | |
157 int size = cm->object_size(); | |
158 // Performance tweak: We skip iterating over the klass pointer since we | |
159 // know that Universe::constMethodKlassObj never moves. | |
160 return size; | |
161 } | |
162 | |
163 #ifndef SERIALGC | |
164 void constMethodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
165 assert(obj->is_constMethod(), "should be constMethod"); | |
166 } | |
167 | |
168 int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
169 assert(obj->is_constMethod(), "should be constMethod"); | |
170 constMethodOop cm_oop = constMethodOop(obj); | |
171 oop* const beg_oop = cm_oop->oop_block_beg(); | |
172 oop* const end_oop = cm_oop->oop_block_end(); | |
173 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) { | |
174 PSParallelCompact::adjust_pointer(cur_oop); | |
175 } | |
176 return cm_oop->object_size(); | |
177 } | |
178 #endif // SERIALGC | |
179 | |
180 // Printing | |
181 | |
182 void constMethodKlass::oop_print_on(oop obj, outputStream* st) { | |
183 ResourceMark rm; | |
184 assert(obj->is_constMethod(), "must be constMethod"); | |
185 Klass::oop_print_on(obj, st); | |
186 constMethodOop m = constMethodOop(obj); | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
187 st->print(" - constants: " INTPTR_FORMAT " ", (address)m->constants()); |
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
188 m->constants()->print_value_on(st); st->cr(); |
0 | 189 if (m->has_stackmap_table()) { |
190 st->print(" - stackmap data: "); | |
191 m->stackmap_data()->print_value_on(st); | |
192 st->cr(); | |
193 } | |
194 } | |
195 | |
196 // Short version of printing constMethodOop - just print the name of the | |
197 // method it belongs to. | |
198 void constMethodKlass::oop_print_value_on(oop obj, outputStream* st) { | |
199 assert(obj->is_constMethod(), "must be constMethod"); | |
200 constMethodOop m = constMethodOop(obj); | |
201 st->print(" const part of method " ); | |
202 m->method()->print_value_on(st); | |
203 } | |
204 | |
205 const char* constMethodKlass::internal_name() const { | |
206 return "{constMethod}"; | |
207 } | |
208 | |
209 | |
210 // Verification | |
211 | |
212 void constMethodKlass::oop_verify_on(oop obj, outputStream* st) { | |
213 Klass::oop_verify_on(obj, st); | |
214 guarantee(obj->is_constMethod(), "object must be constMethod"); | |
215 constMethodOop m = constMethodOop(obj); | |
216 guarantee(m->is_perm(), "should be in permspace"); | |
217 | |
218 // Verification can occur during oop construction before the method or | |
219 // other fields have been initialized. | |
220 if (!obj->partially_loaded()) { | |
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
221 guarantee(m->constants()->is_perm(), "should be in permspace"); |
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
3899
diff
changeset
|
222 guarantee(m->constants()->is_constantPool(), "should be constant pool"); |
0 | 223 typeArrayOop stackmap_data = m->stackmap_data(); |
224 guarantee(stackmap_data == NULL || | |
225 stackmap_data->is_perm(), "should be in permspace"); | |
226 | |
227 address m_end = (address)((oop*) m + m->size()); | |
228 address compressed_table_start = m->code_end(); | |
229 guarantee(compressed_table_start <= m_end, "invalid method layout"); | |
230 address compressed_table_end = compressed_table_start; | |
231 // Verify line number table | |
232 if (m->has_linenumber_table()) { | |
233 CompressedLineNumberReadStream stream(m->compressed_linenumber_table()); | |
234 while (stream.read_pair()) { | |
235 guarantee(stream.bci() >= 0 && stream.bci() <= m->code_size(), "invalid bci in line number table"); | |
236 } | |
237 compressed_table_end += stream.position(); | |
238 } | |
239 guarantee(compressed_table_end <= m_end, "invalid method layout"); | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
240 // Verify checked exceptions, exception table and local variable tables |
0 | 241 if (m->has_checked_exceptions()) { |
242 u2* addr = m->checked_exceptions_length_addr(); | |
243 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); | |
244 } | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
245 if (m->has_exception_handler()) { |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
246 u2* addr = m->exception_table_length_addr(); |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
247 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
248 } |
0 | 249 if (m->has_localvariable_table()) { |
250 u2* addr = m->localvariable_table_length_addr(); | |
251 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); | |
252 } | |
253 // Check compressed_table_end relative to uncompressed_table_start | |
254 u2* uncompressed_table_start; | |
255 if (m->has_localvariable_table()) { | |
256 uncompressed_table_start = (u2*) m->localvariable_table_start(); | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
257 } else if (m->has_exception_handler()) { |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
258 uncompressed_table_start = (u2*) m->exception_table_start(); |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
259 } else if (m->has_checked_exceptions()) { |
0 | 260 uncompressed_table_start = (u2*) m->checked_exceptions_start(); |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
261 } else { |
0 | 262 uncompressed_table_start = (u2*) m_end; |
263 } | |
264 int gap = (intptr_t) uncompressed_table_start - (intptr_t) compressed_table_end; | |
265 int max_gap = align_object_size(1)*BytesPerWord; | |
266 guarantee(gap >= 0 && gap < max_gap, "invalid method layout"); | |
267 } | |
268 } | |
269 | |
270 bool constMethodKlass::oop_partially_loaded(oop obj) const { | |
271 assert(obj->is_constMethod(), "object must be klass"); | |
272 constMethodOop m = constMethodOop(obj); | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
273 // check whether stackmap_data points to self (flag for partially loaded) |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
274 return m->stackmap_data() == (typeArrayOop)obj; |
0 | 275 } |
276 | |
277 | |
278 // The exception_table is the last field set when loading an object. | |
279 void constMethodKlass::oop_set_partially_loaded(oop obj) { | |
280 assert(obj->is_constMethod(), "object must be klass"); | |
281 constMethodOop m = constMethodOop(obj); | |
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
282 // Temporarily set stackmap_data to point to self |
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
283 m->set_stackmap_data((typeArrayOop)obj); |
0 | 284 } |