231 // ------------------------------------------------------------------
232 // ciObjectFactory::get
233 //
234 // Get the ciObject corresponding to some oop. If the ciObject has
235 // already been created, it is returned. Otherwise, a new ciObject
236 // is created.
237 ciObject* ciObjectFactory::get(oop key) {
238 ASSERT_IN_VM;
239
240 assert(Universe::heap()->is_in_reserved(key), "must be");
241
242 NonPermObject* &bucket = find_non_perm(key);
243 if (bucket != NULL) {
244 return bucket->object();
245 }
246
247 // The ciObject does not yet exist. Create it and insert it
248 // into the cache.
249 Handle keyHandle(Thread::current(), key);
250 ciObject* new_object = create_new_object(keyHandle());
251 assert(keyHandle() == new_object->get_oop(), "must be properly recorded");
252 init_ident_of(new_object);
253 assert(Universe::heap()->is_in_reserved(new_object->get_oop()), "must be");
254
255 // Not a perm-space object.
256 insert_non_perm(bucket, keyHandle(), new_object);
257 return new_object;
258 }
259
260 int ciObjectFactory::metadata_compare(Metadata* const& key, ciMetadata* const& elt) {
261 Metadata* value = elt->constant_encoding();
262 if (key < value) return -1;
263 else if (key > value) return 1;
264 else return 0;
265 }
266
267 // ------------------------------------------------------------------
268 // ciObjectFactory::get_metadata
269 //
270 // Get the ciMetadata corresponding to some Metadata. If the ciMetadata has
271 // already been created, it is returned. Otherwise, a new ciMetadata
432 // ciObjectFactory::get_unloaded_klass
433 //
434 // Get a ciKlass representing an unloaded klass.
435 //
436 // Implementation note: unloaded klasses are currently stored in
437 // an unordered array, requiring a linear-time lookup for each
438 // unloaded klass. This may need to change.
439 ciKlass* ciObjectFactory::get_unloaded_klass(ciKlass* accessing_klass,
440 ciSymbol* name,
441 bool create_if_not_found) {
442 EXCEPTION_CONTEXT;
443 oop loader = NULL;
444 oop domain = NULL;
445 if (accessing_klass != NULL) {
446 loader = accessing_klass->loader();
447 domain = accessing_klass->protection_domain();
448 }
449 for (int i=0; i<_unloaded_klasses->length(); i++) {
450 ciKlass* entry = _unloaded_klasses->at(i);
451 if (entry->name()->equals(name) &&
452 entry->loader() == loader &&
453 entry->protection_domain() == domain) {
454 // We've found a match.
455 return entry;
456 }
457 }
458
459 if (!create_if_not_found)
460 return NULL;
461
462 // This is a new unloaded klass. Create it and stick it in
463 // the cache.
464 ciKlass* new_klass = NULL;
465
466 // Two cases: this is an unloaded ObjArrayKlass or an
467 // unloaded InstanceKlass. Deal with both.
468 if (name->byte_at(0) == '[') {
469 // Decompose the name.'
470 FieldArrayInfo fd;
471 BasicType element_type = FieldType::get_array_info(name->get_symbol(),
472 fd, THREAD);
473 if (HAS_PENDING_EXCEPTION) {
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231 // ------------------------------------------------------------------
232 // ciObjectFactory::get
233 //
234 // Get the ciObject corresponding to some oop. If the ciObject has
235 // already been created, it is returned. Otherwise, a new ciObject
236 // is created.
237 ciObject* ciObjectFactory::get(oop key) {
238 ASSERT_IN_VM;
239
240 assert(Universe::heap()->is_in_reserved(key), "must be");
241
242 NonPermObject* &bucket = find_non_perm(key);
243 if (bucket != NULL) {
244 return bucket->object();
245 }
246
247 // The ciObject does not yet exist. Create it and insert it
248 // into the cache.
249 Handle keyHandle(Thread::current(), key);
250 ciObject* new_object = create_new_object(keyHandle());
251 assert(oopDesc::equals(keyHandle(), new_object->get_oop()), "must be properly recorded");
252 init_ident_of(new_object);
253 assert(Universe::heap()->is_in_reserved(new_object->get_oop()), "must be");
254
255 // Not a perm-space object.
256 insert_non_perm(bucket, keyHandle(), new_object);
257 return new_object;
258 }
259
260 int ciObjectFactory::metadata_compare(Metadata* const& key, ciMetadata* const& elt) {
261 Metadata* value = elt->constant_encoding();
262 if (key < value) return -1;
263 else if (key > value) return 1;
264 else return 0;
265 }
266
267 // ------------------------------------------------------------------
268 // ciObjectFactory::get_metadata
269 //
270 // Get the ciMetadata corresponding to some Metadata. If the ciMetadata has
271 // already been created, it is returned. Otherwise, a new ciMetadata
432 // ciObjectFactory::get_unloaded_klass
433 //
434 // Get a ciKlass representing an unloaded klass.
435 //
436 // Implementation note: unloaded klasses are currently stored in
437 // an unordered array, requiring a linear-time lookup for each
438 // unloaded klass. This may need to change.
439 ciKlass* ciObjectFactory::get_unloaded_klass(ciKlass* accessing_klass,
440 ciSymbol* name,
441 bool create_if_not_found) {
442 EXCEPTION_CONTEXT;
443 oop loader = NULL;
444 oop domain = NULL;
445 if (accessing_klass != NULL) {
446 loader = accessing_klass->loader();
447 domain = accessing_klass->protection_domain();
448 }
449 for (int i=0; i<_unloaded_klasses->length(); i++) {
450 ciKlass* entry = _unloaded_klasses->at(i);
451 if (entry->name()->equals(name) &&
452 oopDesc::equals(entry->loader(), loader) &&
453 oopDesc::equals(entry->protection_domain(), domain)) {
454 // We've found a match.
455 return entry;
456 }
457 }
458
459 if (!create_if_not_found)
460 return NULL;
461
462 // This is a new unloaded klass. Create it and stick it in
463 // the cache.
464 ciKlass* new_klass = NULL;
465
466 // Two cases: this is an unloaded ObjArrayKlass or an
467 // unloaded InstanceKlass. Deal with both.
468 if (name->byte_at(0) == '[') {
469 // Decompose the name.'
470 FieldArrayInfo fd;
471 BasicType element_type = FieldType::get_array_info(name->get_symbol(),
472 fd, THREAD);
473 if (HAS_PENDING_EXCEPTION) {
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