Mercurial > hg > truffle
comparison src/share/vm/oops/constMethodKlass.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 0af8b0718fc9 |
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1 /* | |
2 * Copyright 2003-2006 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_constMethodKlass.cpp.incl" | |
27 | |
28 | |
29 klassOop constMethodKlass::create_klass(TRAPS) { | |
30 constMethodKlass o; | |
31 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); | |
32 KlassHandle k = base_create_klass(h_this_klass, header_size(), | |
33 o.vtbl_value(), CHECK_NULL); | |
34 // Make sure size calculation is right | |
35 assert(k()->size() == align_object_size(header_size()), | |
36 "wrong size for object"); | |
37 //java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror | |
38 return k(); | |
39 } | |
40 | |
41 | |
42 int constMethodKlass::oop_size(oop obj) const { | |
43 assert(obj->is_constMethod(), "must be constMethod oop"); | |
44 return constMethodOop(obj)->object_size(); | |
45 } | |
46 | |
47 bool constMethodKlass::oop_is_parsable(oop obj) const { | |
48 assert(obj->is_constMethod(), "must be constMethod oop"); | |
49 return constMethodOop(obj)->object_is_parsable(); | |
50 } | |
51 | |
52 constMethodOop constMethodKlass::allocate(int byte_code_size, | |
53 int compressed_line_number_size, | |
54 int localvariable_table_length, | |
55 int checked_exceptions_length, | |
56 TRAPS) { | |
57 | |
58 int size = constMethodOopDesc::object_size(byte_code_size, | |
59 compressed_line_number_size, | |
60 localvariable_table_length, | |
61 checked_exceptions_length); | |
62 KlassHandle h_k(THREAD, as_klassOop()); | |
63 constMethodOop cm = (constMethodOop) | |
64 CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL); | |
65 assert(!cm->is_parsable(), "Not yet safely parsable"); | |
66 No_Safepoint_Verifier no_safepoint; | |
67 cm->set_interpreter_kind(Interpreter::invalid); | |
68 cm->init_fingerprint(); | |
69 cm->set_method(NULL); | |
70 cm->set_stackmap_data(NULL); | |
71 cm->set_exception_table(NULL); | |
72 cm->set_code_size(byte_code_size); | |
73 cm->set_constMethod_size(size); | |
74 cm->set_inlined_tables_length(checked_exceptions_length, | |
75 compressed_line_number_size, | |
76 localvariable_table_length); | |
77 assert(cm->size() == size, "wrong size for object"); | |
78 cm->set_partially_loaded(); | |
79 assert(cm->is_parsable(), "Is safely parsable by gc"); | |
80 return cm; | |
81 } | |
82 | |
83 void constMethodKlass::oop_follow_contents(oop obj) { | |
84 assert (obj->is_constMethod(), "object must be constMethod"); | |
85 constMethodOop cm = constMethodOop(obj); | |
86 MarkSweep::mark_and_push(cm->adr_method()); | |
87 MarkSweep::mark_and_push(cm->adr_stackmap_data()); | |
88 MarkSweep::mark_and_push(cm->adr_exception_table()); | |
89 // Performance tweak: We skip iterating over the klass pointer since we | |
90 // know that Universe::constMethodKlassObj never moves. | |
91 } | |
92 | |
93 #ifndef SERIALGC | |
94 void constMethodKlass::oop_follow_contents(ParCompactionManager* cm, | |
95 oop obj) { | |
96 assert (obj->is_constMethod(), "object must be constMethod"); | |
97 constMethodOop cm_oop = constMethodOop(obj); | |
98 PSParallelCompact::mark_and_push(cm, cm_oop->adr_method()); | |
99 PSParallelCompact::mark_and_push(cm, cm_oop->adr_stackmap_data()); | |
100 PSParallelCompact::mark_and_push(cm, cm_oop->adr_exception_table()); | |
101 // Performance tweak: We skip iterating over the klass pointer since we | |
102 // know that Universe::constMethodKlassObj never moves. | |
103 } | |
104 #endif // SERIALGC | |
105 | |
106 int constMethodKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
107 assert (obj->is_constMethod(), "object must be constMethod"); | |
108 constMethodOop cm = constMethodOop(obj); | |
109 blk->do_oop(cm->adr_method()); | |
110 blk->do_oop(cm->adr_stackmap_data()); | |
111 blk->do_oop(cm->adr_exception_table()); | |
112 // Get size before changing pointers. | |
113 // Don't call size() or oop_size() since that is a virtual call. | |
114 int size = cm->object_size(); | |
115 return size; | |
116 } | |
117 | |
118 | |
119 int constMethodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
120 assert (obj->is_constMethod(), "object must be constMethod"); | |
121 constMethodOop cm = constMethodOop(obj); | |
122 oop* adr; | |
123 adr = cm->adr_method(); | |
124 if (mr.contains(adr)) blk->do_oop(adr); | |
125 adr = cm->adr_stackmap_data(); | |
126 if (mr.contains(adr)) blk->do_oop(adr); | |
127 adr = cm->adr_exception_table(); | |
128 if (mr.contains(adr)) blk->do_oop(adr); | |
129 // Get size before changing pointers. | |
130 // Don't call size() or oop_size() since that is a virtual call. | |
131 int size = cm->object_size(); | |
132 // Performance tweak: We skip iterating over the klass pointer since we | |
133 // know that Universe::constMethodKlassObj never moves. | |
134 return size; | |
135 } | |
136 | |
137 | |
138 int constMethodKlass::oop_adjust_pointers(oop obj) { | |
139 assert(obj->is_constMethod(), "should be constMethod"); | |
140 constMethodOop cm = constMethodOop(obj); | |
141 MarkSweep::adjust_pointer(cm->adr_method()); | |
142 MarkSweep::adjust_pointer(cm->adr_stackmap_data()); | |
143 MarkSweep::adjust_pointer(cm->adr_exception_table()); | |
144 // Get size before changing pointers. | |
145 // Don't call size() or oop_size() since that is a virtual call. | |
146 int size = cm->object_size(); | |
147 // Performance tweak: We skip iterating over the klass pointer since we | |
148 // know that Universe::constMethodKlassObj never moves. | |
149 return size; | |
150 } | |
151 | |
152 #ifndef SERIALGC | |
153 void constMethodKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) { | |
154 assert(obj->is_constMethod(), "should be constMethod"); | |
155 } | |
156 | |
157 void constMethodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
158 assert(obj->is_constMethod(), "should be constMethod"); | |
159 } | |
160 | |
161 int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
162 assert(obj->is_constMethod(), "should be constMethod"); | |
163 constMethodOop cm_oop = constMethodOop(obj); | |
164 #if 0 | |
165 PSParallelCompact::adjust_pointer(cm_oop->adr_method()); | |
166 PSParallelCompact::adjust_pointer(cm_oop->adr_exception_table()); | |
167 PSParallelCompact::adjust_pointer(cm_oop->adr_stackmap_data()); | |
168 #endif | |
169 oop* const beg_oop = cm_oop->oop_block_beg(); | |
170 oop* const end_oop = cm_oop->oop_block_end(); | |
171 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) { | |
172 PSParallelCompact::adjust_pointer(cur_oop); | |
173 } | |
174 return cm_oop->object_size(); | |
175 } | |
176 | |
177 int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, | |
178 HeapWord* beg_addr, | |
179 HeapWord* end_addr) { | |
180 assert(obj->is_constMethod(), "should be constMethod"); | |
181 constMethodOop cm_oop = constMethodOop(obj); | |
182 | |
183 oop* const beg_oop = MAX2((oop*)beg_addr, cm_oop->oop_block_beg()); | |
184 oop* const end_oop = MIN2((oop*)end_addr, cm_oop->oop_block_end()); | |
185 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) { | |
186 PSParallelCompact::adjust_pointer(cur_oop); | |
187 } | |
188 | |
189 return cm_oop->object_size(); | |
190 } | |
191 #endif // SERIALGC | |
192 | |
193 #ifndef PRODUCT | |
194 | |
195 // Printing | |
196 | |
197 void constMethodKlass::oop_print_on(oop obj, outputStream* st) { | |
198 ResourceMark rm; | |
199 assert(obj->is_constMethod(), "must be constMethod"); | |
200 Klass::oop_print_on(obj, st); | |
201 constMethodOop m = constMethodOop(obj); | |
202 st->print(" - method: " INTPTR_FORMAT " ", (address)m->method()); | |
203 m->method()->print_value_on(st); st->cr(); | |
204 st->print(" - exceptions: " INTPTR_FORMAT "\n", (address)m->exception_table()); | |
205 if (m->has_stackmap_table()) { | |
206 st->print(" - stackmap data: "); | |
207 m->stackmap_data()->print_value_on(st); | |
208 st->cr(); | |
209 } | |
210 } | |
211 | |
212 | |
213 // Short version of printing constMethodOop - just print the name of the | |
214 // method it belongs to. | |
215 void constMethodKlass::oop_print_value_on(oop obj, outputStream* st) { | |
216 assert(obj->is_constMethod(), "must be constMethod"); | |
217 constMethodOop m = constMethodOop(obj); | |
218 st->print(" const part of method " ); | |
219 m->method()->print_value_on(st); | |
220 } | |
221 | |
222 #endif // PRODUCT | |
223 | |
224 const char* constMethodKlass::internal_name() const { | |
225 return "{constMethod}"; | |
226 } | |
227 | |
228 | |
229 // Verification | |
230 | |
231 void constMethodKlass::oop_verify_on(oop obj, outputStream* st) { | |
232 Klass::oop_verify_on(obj, st); | |
233 guarantee(obj->is_constMethod(), "object must be constMethod"); | |
234 constMethodOop m = constMethodOop(obj); | |
235 guarantee(m->is_perm(), "should be in permspace"); | |
236 | |
237 // Verification can occur during oop construction before the method or | |
238 // other fields have been initialized. | |
239 if (!obj->partially_loaded()) { | |
240 guarantee(m->method()->is_perm(), "should be in permspace"); | |
241 guarantee(m->method()->is_method(), "should be method"); | |
242 typeArrayOop stackmap_data = m->stackmap_data(); | |
243 guarantee(stackmap_data == NULL || | |
244 stackmap_data->is_perm(), "should be in permspace"); | |
245 guarantee(m->exception_table()->is_perm(), "should be in permspace"); | |
246 guarantee(m->exception_table()->is_typeArray(), "should be type array"); | |
247 | |
248 address m_end = (address)((oop*) m + m->size()); | |
249 address compressed_table_start = m->code_end(); | |
250 guarantee(compressed_table_start <= m_end, "invalid method layout"); | |
251 address compressed_table_end = compressed_table_start; | |
252 // Verify line number table | |
253 if (m->has_linenumber_table()) { | |
254 CompressedLineNumberReadStream stream(m->compressed_linenumber_table()); | |
255 while (stream.read_pair()) { | |
256 guarantee(stream.bci() >= 0 && stream.bci() <= m->code_size(), "invalid bci in line number table"); | |
257 } | |
258 compressed_table_end += stream.position(); | |
259 } | |
260 guarantee(compressed_table_end <= m_end, "invalid method layout"); | |
261 // Verify checked exceptions and local variable tables | |
262 if (m->has_checked_exceptions()) { | |
263 u2* addr = m->checked_exceptions_length_addr(); | |
264 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); | |
265 } | |
266 if (m->has_localvariable_table()) { | |
267 u2* addr = m->localvariable_table_length_addr(); | |
268 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); | |
269 } | |
270 // Check compressed_table_end relative to uncompressed_table_start | |
271 u2* uncompressed_table_start; | |
272 if (m->has_localvariable_table()) { | |
273 uncompressed_table_start = (u2*) m->localvariable_table_start(); | |
274 } else { | |
275 if (m->has_checked_exceptions()) { | |
276 uncompressed_table_start = (u2*) m->checked_exceptions_start(); | |
277 } else { | |
278 uncompressed_table_start = (u2*) m_end; | |
279 } | |
280 } | |
281 int gap = (intptr_t) uncompressed_table_start - (intptr_t) compressed_table_end; | |
282 int max_gap = align_object_size(1)*BytesPerWord; | |
283 guarantee(gap >= 0 && gap < max_gap, "invalid method layout"); | |
284 } | |
285 } | |
286 | |
287 bool constMethodKlass::oop_partially_loaded(oop obj) const { | |
288 assert(obj->is_constMethod(), "object must be klass"); | |
289 constMethodOop m = constMethodOop(obj); | |
290 // check whether exception_table points to self (flag for partially loaded) | |
291 return m->exception_table() == (typeArrayOop)obj; | |
292 } | |
293 | |
294 | |
295 // The exception_table is the last field set when loading an object. | |
296 void constMethodKlass::oop_set_partially_loaded(oop obj) { | |
297 assert(obj->is_constMethod(), "object must be klass"); | |
298 constMethodOop m = constMethodOop(obj); | |
299 // Temporarily set exception_table to point to self | |
300 m->set_exception_table((typeArrayOop)obj); | |
301 } |