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comparison src/share/vm/oops/methodKlass.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1997-2007 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/_methodKlass.cpp.incl"
27
28 klassOop methodKlass::create_klass(TRAPS) {
29 methodKlass o;
30 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
31 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);
32 // Make sure size calculation is right
33 assert(k()->size() == align_object_size(header_size()), "wrong size for object");
34 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
35 return k();
36 }
37
38
39 int methodKlass::oop_size(oop obj) const {
40 assert(obj->is_method(), "must be method oop");
41 return methodOop(obj)->object_size();
42 }
43
44
45 bool methodKlass::oop_is_parsable(oop obj) const {
46 assert(obj->is_method(), "must be method oop");
47 return methodOop(obj)->object_is_parsable();
48 }
49
50
51 methodOop methodKlass::allocate(constMethodHandle xconst,
52 AccessFlags access_flags, TRAPS) {
53 int size = methodOopDesc::object_size(access_flags.is_native());
54 KlassHandle h_k(THREAD, as_klassOop());
55 assert(xconst()->is_parsable(), "possible publication protocol violation");
56 methodOop m = (methodOop)CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
57 assert(!m->is_parsable(), "not expecting parsability yet.");
58
59 No_Safepoint_Verifier no_safepoint; // until m becomes parsable below
60 m->set_constMethod(xconst());
61 m->set_access_flags(access_flags);
62 m->set_method_size(size);
63 m->set_name_index(0);
64 m->set_signature_index(0);
65 #ifdef CC_INTERP
66 m->set_result_index(T_VOID);
67 #endif
68 m->set_constants(NULL);
69 m->set_max_stack(0);
70 m->set_max_locals(0);
71 m->clear_intrinsic_id_cache();
72 m->set_method_data(NULL);
73 m->set_interpreter_throwout_count(0);
74 m->set_vtable_index(methodOopDesc::garbage_vtable_index);
75
76 // Fix and bury in methodOop
77 m->set_interpreter_entry(NULL); // sets i2i entry and from_int
78 m->set_highest_tier_compile(CompLevel_none);
79 m->set_adapter_entry(NULL);
80 m->clear_code(); // from_c/from_i get set to c2i/i2i
81
82 if (access_flags.is_native()) {
83 m->clear_native_function();
84 m->set_signature_handler(NULL);
85 }
86
87 NOT_PRODUCT(m->set_compiled_invocation_count(0);)
88 m->set_interpreter_invocation_count(0);
89 m->invocation_counter()->init();
90 m->backedge_counter()->init();
91 m->clear_number_of_breakpoints();
92 assert(m->is_parsable(), "must be parsable here.");
93 assert(m->size() == size, "wrong size for object");
94 // We should not publish an uprasable object's reference
95 // into one that is parsable, since that presents problems
96 // for the concurrent parallel marking and precleaning phases
97 // of concurrent gc (CMS).
98 xconst->set_method(m);
99 return m;
100 }
101
102
103 void methodKlass::oop_follow_contents(oop obj) {
104 assert (obj->is_method(), "object must be method");
105 methodOop m = methodOop(obj);
106 // Performance tweak: We skip iterating over the klass pointer since we
107 // know that Universe::methodKlassObj never moves.
108 MarkSweep::mark_and_push(m->adr_constMethod());
109 MarkSweep::mark_and_push(m->adr_constants());
110 if (m->method_data() != NULL) {
111 MarkSweep::mark_and_push(m->adr_method_data());
112 }
113 }
114
115 #ifndef SERIALGC
116 void methodKlass::oop_follow_contents(ParCompactionManager* cm,
117 oop obj) {
118 assert (obj->is_method(), "object must be method");
119 methodOop m = methodOop(obj);
120 // Performance tweak: We skip iterating over the klass pointer since we
121 // know that Universe::methodKlassObj never moves.
122 PSParallelCompact::mark_and_push(cm, m->adr_constMethod());
123 PSParallelCompact::mark_and_push(cm, m->adr_constants());
124 #ifdef COMPILER2
125 if (m->method_data() != NULL) {
126 PSParallelCompact::mark_and_push(cm, m->adr_method_data());
127 }
128 #endif // COMPILER2
129 }
130 #endif // SERIALGC
131
132 int methodKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
133 assert (obj->is_method(), "object must be method");
134 methodOop m = methodOop(obj);
135 // Get size before changing pointers.
136 // Don't call size() or oop_size() since that is a virtual call.
137 int size = m->object_size();
138 // Performance tweak: We skip iterating over the klass pointer since we
139 // know that Universe::methodKlassObj never moves
140 blk->do_oop(m->adr_constMethod());
141 blk->do_oop(m->adr_constants());
142 if (m->method_data() != NULL) {
143 blk->do_oop(m->adr_method_data());
144 }
145 return size;
146 }
147
148
149 int methodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
150 assert (obj->is_method(), "object must be method");
151 methodOop m = methodOop(obj);
152 // Get size before changing pointers.
153 // Don't call size() or oop_size() since that is a virtual call.
154 int size = m->object_size();
155 // Performance tweak: We skip iterating over the klass pointer since we
156 // know that Universe::methodKlassObj never moves.
157 oop* adr;
158 adr = m->adr_constMethod();
159 if (mr.contains(adr)) blk->do_oop(adr);
160 adr = m->adr_constants();
161 if (mr.contains(adr)) blk->do_oop(adr);
162 if (m->method_data() != NULL) {
163 adr = m->adr_method_data();
164 if (mr.contains(adr)) blk->do_oop(adr);
165 }
166 return size;
167 }
168
169
170 int methodKlass::oop_adjust_pointers(oop obj) {
171 assert(obj->is_method(), "should be method");
172 methodOop m = methodOop(obj);
173 // Get size before changing pointers.
174 // Don't call size() or oop_size() since that is a virtual call.
175 int size = m->object_size();
176 // Performance tweak: We skip iterating over the klass pointer since we
177 // know that Universe::methodKlassObj never moves.
178 MarkSweep::adjust_pointer(m->adr_constMethod());
179 MarkSweep::adjust_pointer(m->adr_constants());
180 if (m->method_data() != NULL) {
181 MarkSweep::adjust_pointer(m->adr_method_data());
182 }
183 return size;
184 }
185
186 #ifndef SERIALGC
187 void methodKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
188 assert(obj->is_method(), "should be method");
189 }
190
191 void methodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
192 assert(obj->is_method(), "should be method");
193 }
194
195 int methodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
196 assert(obj->is_method(), "should be method");
197 methodOop m = methodOop(obj);
198 PSParallelCompact::adjust_pointer(m->adr_constMethod());
199 PSParallelCompact::adjust_pointer(m->adr_constants());
200 #ifdef COMPILER2
201 if (m->method_data() != NULL) {
202 PSParallelCompact::adjust_pointer(m->adr_method_data());
203 }
204 #endif // COMPILER2
205 return m->object_size();
206 }
207
208 int methodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
209 HeapWord* beg_addr, HeapWord* end_addr) {
210 assert(obj->is_method(), "should be method");
211
212 oop* p;
213 methodOop m = methodOop(obj);
214
215 p = m->adr_constMethod();
216 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
217 p = m->adr_constants();
218 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
219
220 #ifdef COMPILER2
221 if (m->method_data() != NULL) {
222 p = m->adr_method_data();
223 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
224 }
225 #endif // COMPILER2
226 return m->object_size();
227 }
228 #endif // SERIALGC
229
230 #ifndef PRODUCT
231
232 // Printing
233
234 void methodKlass::oop_print_on(oop obj, outputStream* st) {
235 ResourceMark rm;
236 assert(obj->is_method(), "must be method");
237 Klass::oop_print_on(obj, st);
238 methodOop m = methodOop(obj);
239 st->print (" - method holder: "); m->method_holder()->print_value_on(st); st->cr();
240 st->print (" - constants: " INTPTR_FORMAT, " ", (address)m->constants());
241 m->constants()->print_value_on(st); st->cr();
242 st->print (" - access: 0x%x ", m->access_flags().as_int()); m->access_flags().print_on(st); st->cr();
243 st->print (" - name: "); m->name()->print_value_on(st); st->cr();
244 st->print (" - signature: "); m->signature()->print_value_on(st); st->cr();
245 st->print_cr(" - max stack: %d", m->max_stack());
246 st->print_cr(" - max locals: %d", m->max_locals());
247 st->print_cr(" - size of params: %d", m->size_of_parameters());
248 st->print_cr(" - method size: %d", m->method_size());
249 st->print_cr(" - vtable index: %d", m->_vtable_index);
250 st->print_cr(" - code size: %d", m->code_size());
251 st->print_cr(" - code start: " INTPTR_FORMAT, m->code_base());
252 st->print_cr(" - code end (excl): " INTPTR_FORMAT, m->code_base() + m->code_size());
253 if (m->method_data() != NULL) {
254 st->print_cr(" - method data: " INTPTR_FORMAT, (address)m->method_data());
255 }
256 st->print_cr(" - checked ex length: %d", m->checked_exceptions_length());
257 if (m->checked_exceptions_length() > 0) {
258 CheckedExceptionElement* table = m->checked_exceptions_start();
259 st->print_cr(" - checked ex start: " INTPTR_FORMAT, table);
260 if (Verbose) {
261 for (int i = 0; i < m->checked_exceptions_length(); i++) {
262 st->print_cr(" - throws %s", m->constants()->printable_name_at(table[i].class_cp_index));
263 }
264 }
265 }
266 if (m->has_linenumber_table()) {
267 u_char* table = m->compressed_linenumber_table();
268 st->print_cr(" - linenumber start: " INTPTR_FORMAT, table);
269 if (Verbose) {
270 CompressedLineNumberReadStream stream(table);
271 while (stream.read_pair()) {
272 st->print_cr(" - line %d: %d", stream.line(), stream.bci());
273 }
274 }
275 }
276 st->print_cr(" - localvar length: %d", m->localvariable_table_length());
277 if (m->localvariable_table_length() > 0) {
278 LocalVariableTableElement* table = m->localvariable_table_start();
279 st->print_cr(" - localvar start: " INTPTR_FORMAT, table);
280 if (Verbose) {
281 for (int i = 0; i < m->localvariable_table_length(); i++) {
282 int bci = table[i].start_bci;
283 int len = table[i].length;
284 const char* name = m->constants()->printable_name_at(table[i].name_cp_index);
285 const char* desc = m->constants()->printable_name_at(table[i].descriptor_cp_index);
286 int slot = table[i].slot;
287 st->print_cr(" - %s %s bci=%d len=%d slot=%d", desc, name, bci, len, slot);
288 }
289 }
290 }
291 if (m->code() != NULL) {
292 st->print (" - compiled code: ");
293 m->code()->print_value_on(st);
294 st->cr();
295 }
296 }
297
298
299 void methodKlass::oop_print_value_on(oop obj, outputStream* st) {
300 assert(obj->is_method(), "must be method");
301 Klass::oop_print_value_on(obj, st);
302 methodOop m = methodOop(obj);
303 st->print(" ");
304 m->name()->print_value_on(st);
305 st->print(" ");
306 m->signature()->print_value_on(st);
307 st->print(" in ");
308 m->method_holder()->print_value_on(st);
309 if (WizardMode) st->print("[%d,%d]", m->size_of_parameters(), m->max_locals());
310 if (WizardMode && m->code() != NULL) st->print(" ((nmethod*)%p)", m->code());
311 }
312
313 #endif // PRODUCT
314
315 const char* methodKlass::internal_name() const {
316 return "{method}";
317 }
318
319
320 // Verification
321
322 void methodKlass::oop_verify_on(oop obj, outputStream* st) {
323 Klass::oop_verify_on(obj, st);
324 guarantee(obj->is_method(), "object must be method");
325 if (!obj->partially_loaded()) {
326 methodOop m = methodOop(obj);
327 guarantee(m->is_perm(), "should be in permspace");
328 guarantee(m->name()->is_perm(), "should be in permspace");
329 guarantee(m->name()->is_symbol(), "should be symbol");
330 guarantee(m->signature()->is_perm(), "should be in permspace");
331 guarantee(m->signature()->is_symbol(), "should be symbol");
332 guarantee(m->constants()->is_perm(), "should be in permspace");
333 guarantee(m->constants()->is_constantPool(), "should be constant pool");
334 guarantee(m->constMethod()->is_constMethod(), "should be constMethodOop");
335 guarantee(m->constMethod()->is_perm(), "should be in permspace");
336 methodDataOop method_data = m->method_data();
337 guarantee(method_data == NULL ||
338 method_data->is_perm(), "should be in permspace");
339 guarantee(method_data == NULL ||
340 method_data->is_methodData(), "should be method data");
341 }
342 }
343
344 bool methodKlass::oop_partially_loaded(oop obj) const {
345 assert(obj->is_method(), "object must be method");
346 methodOop m = methodOop(obj);
347 constMethodOop xconst = m->constMethod();
348 assert(xconst != NULL, "const method must be set");
349 constMethodKlass* ck = constMethodKlass::cast(xconst->klass());
350 return ck->oop_partially_loaded(xconst);
351 }
352
353
354 void methodKlass::oop_set_partially_loaded(oop obj) {
355 assert(obj->is_method(), "object must be method");
356 methodOop m = methodOop(obj);
357 constMethodOop xconst = m->constMethod();
358 assert(xconst != NULL, "const method must be set");
359 constMethodKlass* ck = constMethodKlass::cast(xconst->klass());
360 ck->oop_set_partially_loaded(xconst);
361 }