Mercurial > hg > graal-compiler
annotate src/share/vm/oops/constMethodKlass.cpp @ 1845:a222fcfba398
6990549: Zero and Shark fixes after 6978355 and 6953144
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
| author | twisti |
|---|---|
| date | Fri, 08 Oct 2010 02:42:17 -0700 |
| parents | 7fcd5f39bd7a |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved. |
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| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 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 | |
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52 bool constMethodKlass::oop_is_conc_safe(oop obj) const { |
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53 assert(obj->is_constMethod(), "must be constMethod oop"); |
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54 return constMethodOop(obj)->is_conc_safe(); |
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55 } |
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56 |
| 0 | 57 constMethodOop constMethodKlass::allocate(int byte_code_size, |
| 58 int compressed_line_number_size, | |
| 59 int localvariable_table_length, | |
| 60 int checked_exceptions_length, | |
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61 bool is_conc_safe, |
| 0 | 62 TRAPS) { |
| 63 | |
| 64 int size = constMethodOopDesc::object_size(byte_code_size, | |
| 65 compressed_line_number_size, | |
| 66 localvariable_table_length, | |
| 67 checked_exceptions_length); | |
| 68 KlassHandle h_k(THREAD, as_klassOop()); | |
| 69 constMethodOop cm = (constMethodOop) | |
| 70 CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL); | |
| 71 assert(!cm->is_parsable(), "Not yet safely parsable"); | |
| 72 No_Safepoint_Verifier no_safepoint; | |
| 73 cm->set_interpreter_kind(Interpreter::invalid); | |
| 74 cm->init_fingerprint(); | |
| 75 cm->set_method(NULL); | |
| 76 cm->set_stackmap_data(NULL); | |
| 77 cm->set_exception_table(NULL); | |
| 78 cm->set_code_size(byte_code_size); | |
| 79 cm->set_constMethod_size(size); | |
| 80 cm->set_inlined_tables_length(checked_exceptions_length, | |
| 81 compressed_line_number_size, | |
| 82 localvariable_table_length); | |
| 83 assert(cm->size() == size, "wrong size for object"); | |
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84 cm->set_is_conc_safe(is_conc_safe); |
| 0 | 85 cm->set_partially_loaded(); |
| 86 assert(cm->is_parsable(), "Is safely parsable by gc"); | |
| 87 return cm; | |
| 88 } | |
| 89 | |
| 90 void constMethodKlass::oop_follow_contents(oop obj) { | |
| 91 assert (obj->is_constMethod(), "object must be constMethod"); | |
| 92 constMethodOop cm = constMethodOop(obj); | |
| 93 MarkSweep::mark_and_push(cm->adr_method()); | |
| 94 MarkSweep::mark_and_push(cm->adr_stackmap_data()); | |
| 95 MarkSweep::mark_and_push(cm->adr_exception_table()); | |
| 96 // Performance tweak: We skip iterating over the klass pointer since we | |
| 97 // know that Universe::constMethodKlassObj never moves. | |
| 98 } | |
| 99 | |
| 100 #ifndef SERIALGC | |
| 101 void constMethodKlass::oop_follow_contents(ParCompactionManager* cm, | |
| 102 oop obj) { | |
| 103 assert (obj->is_constMethod(), "object must be constMethod"); | |
| 104 constMethodOop cm_oop = constMethodOop(obj); | |
| 105 PSParallelCompact::mark_and_push(cm, cm_oop->adr_method()); | |
| 106 PSParallelCompact::mark_and_push(cm, cm_oop->adr_stackmap_data()); | |
| 107 PSParallelCompact::mark_and_push(cm, cm_oop->adr_exception_table()); | |
| 108 // Performance tweak: We skip iterating over the klass pointer since we | |
| 109 // know that Universe::constMethodKlassObj never moves. | |
| 110 } | |
| 111 #endif // SERIALGC | |
| 112 | |
| 113 int constMethodKlass::oop_oop_iterate(oop obj, OopClosure* blk) { | |
| 114 assert (obj->is_constMethod(), "object must be constMethod"); | |
| 115 constMethodOop cm = constMethodOop(obj); | |
| 116 blk->do_oop(cm->adr_method()); | |
| 117 blk->do_oop(cm->adr_stackmap_data()); | |
| 118 blk->do_oop(cm->adr_exception_table()); | |
| 119 // Get size before changing pointers. | |
| 120 // Don't call size() or oop_size() since that is a virtual call. | |
| 121 int size = cm->object_size(); | |
| 122 return size; | |
| 123 } | |
| 124 | |
| 125 | |
| 126 int constMethodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { | |
| 127 assert (obj->is_constMethod(), "object must be constMethod"); | |
| 128 constMethodOop cm = constMethodOop(obj); | |
| 129 oop* adr; | |
| 130 adr = cm->adr_method(); | |
| 131 if (mr.contains(adr)) blk->do_oop(adr); | |
| 132 adr = cm->adr_stackmap_data(); | |
| 133 if (mr.contains(adr)) blk->do_oop(adr); | |
| 134 adr = cm->adr_exception_table(); | |
| 135 if (mr.contains(adr)) blk->do_oop(adr); | |
| 136 // Get size before changing pointers. | |
| 137 // Don't call size() or oop_size() since that is a virtual call. | |
| 138 int size = cm->object_size(); | |
| 139 // Performance tweak: We skip iterating over the klass pointer since we | |
| 140 // know that Universe::constMethodKlassObj never moves. | |
| 141 return size; | |
| 142 } | |
| 143 | |
| 144 | |
| 145 int constMethodKlass::oop_adjust_pointers(oop obj) { | |
| 146 assert(obj->is_constMethod(), "should be constMethod"); | |
| 147 constMethodOop cm = constMethodOop(obj); | |
| 148 MarkSweep::adjust_pointer(cm->adr_method()); | |
| 149 MarkSweep::adjust_pointer(cm->adr_stackmap_data()); | |
| 150 MarkSweep::adjust_pointer(cm->adr_exception_table()); | |
| 151 // Get size before changing pointers. | |
| 152 // Don't call size() or oop_size() since that is a virtual call. | |
| 153 int size = cm->object_size(); | |
| 154 // Performance tweak: We skip iterating over the klass pointer since we | |
| 155 // know that Universe::constMethodKlassObj never moves. | |
| 156 return size; | |
| 157 } | |
| 158 | |
| 159 #ifndef SERIALGC | |
| 160 void constMethodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
| 161 assert(obj->is_constMethod(), "should be constMethod"); | |
| 162 } | |
| 163 | |
| 164 int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
| 165 assert(obj->is_constMethod(), "should be constMethod"); | |
| 166 constMethodOop cm_oop = constMethodOop(obj); | |
| 167 #if 0 | |
| 168 PSParallelCompact::adjust_pointer(cm_oop->adr_method()); | |
| 169 PSParallelCompact::adjust_pointer(cm_oop->adr_exception_table()); | |
| 170 PSParallelCompact::adjust_pointer(cm_oop->adr_stackmap_data()); | |
| 171 #endif | |
| 172 oop* const beg_oop = cm_oop->oop_block_beg(); | |
| 173 oop* const end_oop = cm_oop->oop_block_end(); | |
| 174 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) { | |
| 175 PSParallelCompact::adjust_pointer(cur_oop); | |
| 176 } | |
| 177 return cm_oop->object_size(); | |
| 178 } | |
| 179 | |
| 180 int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, | |
| 181 HeapWord* beg_addr, | |
| 182 HeapWord* end_addr) { | |
| 183 assert(obj->is_constMethod(), "should be constMethod"); | |
| 184 constMethodOop cm_oop = constMethodOop(obj); | |
| 185 | |
| 186 oop* const beg_oop = MAX2((oop*)beg_addr, cm_oop->oop_block_beg()); | |
| 187 oop* const end_oop = MIN2((oop*)end_addr, cm_oop->oop_block_end()); | |
| 188 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) { | |
| 189 PSParallelCompact::adjust_pointer(cur_oop); | |
| 190 } | |
| 191 | |
| 192 return cm_oop->object_size(); | |
| 193 } | |
| 194 #endif // SERIALGC | |
| 195 | |
| 196 // Printing | |
| 197 | |
| 198 void constMethodKlass::oop_print_on(oop obj, outputStream* st) { | |
| 199 ResourceMark rm; | |
| 200 assert(obj->is_constMethod(), "must be constMethod"); | |
| 201 Klass::oop_print_on(obj, st); | |
| 202 constMethodOop m = constMethodOop(obj); | |
| 203 st->print(" - method: " INTPTR_FORMAT " ", (address)m->method()); | |
| 204 m->method()->print_value_on(st); st->cr(); | |
| 205 st->print(" - exceptions: " INTPTR_FORMAT "\n", (address)m->exception_table()); | |
| 206 if (m->has_stackmap_table()) { | |
| 207 st->print(" - stackmap data: "); | |
| 208 m->stackmap_data()->print_value_on(st); | |
| 209 st->cr(); | |
| 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 const char* constMethodKlass::internal_name() const { | |
| 223 return "{constMethod}"; | |
| 224 } | |
| 225 | |
| 226 | |
| 227 // Verification | |
| 228 | |
| 229 void constMethodKlass::oop_verify_on(oop obj, outputStream* st) { | |
| 230 Klass::oop_verify_on(obj, st); | |
| 231 guarantee(obj->is_constMethod(), "object must be constMethod"); | |
| 232 constMethodOop m = constMethodOop(obj); | |
| 233 guarantee(m->is_perm(), "should be in permspace"); | |
| 234 | |
| 235 // Verification can occur during oop construction before the method or | |
| 236 // other fields have been initialized. | |
| 237 if (!obj->partially_loaded()) { | |
| 238 guarantee(m->method()->is_perm(), "should be in permspace"); | |
| 239 guarantee(m->method()->is_method(), "should be method"); | |
| 240 typeArrayOop stackmap_data = m->stackmap_data(); | |
| 241 guarantee(stackmap_data == NULL || | |
| 242 stackmap_data->is_perm(), "should be in permspace"); | |
| 243 guarantee(m->exception_table()->is_perm(), "should be in permspace"); | |
| 244 guarantee(m->exception_table()->is_typeArray(), "should be type array"); | |
| 245 | |
| 246 address m_end = (address)((oop*) m + m->size()); | |
| 247 address compressed_table_start = m->code_end(); | |
| 248 guarantee(compressed_table_start <= m_end, "invalid method layout"); | |
| 249 address compressed_table_end = compressed_table_start; | |
| 250 // Verify line number table | |
| 251 if (m->has_linenumber_table()) { | |
| 252 CompressedLineNumberReadStream stream(m->compressed_linenumber_table()); | |
| 253 while (stream.read_pair()) { | |
| 254 guarantee(stream.bci() >= 0 && stream.bci() <= m->code_size(), "invalid bci in line number table"); | |
| 255 } | |
| 256 compressed_table_end += stream.position(); | |
| 257 } | |
| 258 guarantee(compressed_table_end <= m_end, "invalid method layout"); | |
| 259 // Verify checked exceptions and local variable tables | |
| 260 if (m->has_checked_exceptions()) { | |
| 261 u2* addr = m->checked_exceptions_length_addr(); | |
| 262 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); | |
| 263 } | |
| 264 if (m->has_localvariable_table()) { | |
| 265 u2* addr = m->localvariable_table_length_addr(); | |
| 266 guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); | |
| 267 } | |
| 268 // Check compressed_table_end relative to uncompressed_table_start | |
| 269 u2* uncompressed_table_start; | |
| 270 if (m->has_localvariable_table()) { | |
| 271 uncompressed_table_start = (u2*) m->localvariable_table_start(); | |
| 272 } else { | |
| 273 if (m->has_checked_exceptions()) { | |
| 274 uncompressed_table_start = (u2*) m->checked_exceptions_start(); | |
| 275 } else { | |
| 276 uncompressed_table_start = (u2*) m_end; | |
| 277 } | |
| 278 } | |
| 279 int gap = (intptr_t) uncompressed_table_start - (intptr_t) compressed_table_end; | |
| 280 int max_gap = align_object_size(1)*BytesPerWord; | |
| 281 guarantee(gap >= 0 && gap < max_gap, "invalid method layout"); | |
| 282 } | |
| 283 } | |
| 284 | |
| 285 bool constMethodKlass::oop_partially_loaded(oop obj) const { | |
| 286 assert(obj->is_constMethod(), "object must be klass"); | |
| 287 constMethodOop m = constMethodOop(obj); | |
| 288 // check whether exception_table points to self (flag for partially loaded) | |
| 289 return m->exception_table() == (typeArrayOop)obj; | |
| 290 } | |
| 291 | |
| 292 | |
| 293 // The exception_table is the last field set when loading an object. | |
| 294 void constMethodKlass::oop_set_partially_loaded(oop obj) { | |
| 295 assert(obj->is_constMethod(), "object must be klass"); | |
| 296 constMethodOop m = constMethodOop(obj); | |
| 297 // Temporarily set exception_table to point to self | |
| 298 m->set_exception_table((typeArrayOop)obj); | |
| 299 } |