/*
* Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "ci/ciCallSite.hpp"
#include "ci/ciInstance.hpp"
#include "ci/ciInstanceKlass.hpp"
#include "ci/ciMemberName.hpp"
#include "ci/ciMethod.hpp"
#include "ci/ciMethodData.hpp"
#include "ci/ciMethodHandle.hpp"
#include "ci/ciMethodType.hpp"
#include "ci/ciNullObject.hpp"
#include "ci/ciObjArray.hpp"
#include "ci/ciObjArrayKlass.hpp"
#include "ci/ciObject.hpp"
#include "ci/ciObjectFactory.hpp"
#include "ci/ciSymbol.hpp"
#include "ci/ciTypeArray.hpp"
#include "ci/ciTypeArrayKlass.hpp"
#include "ci/ciUtilities.inline.hpp"
#include "classfile/javaClasses.inline.hpp"
#include "classfile/systemDictionary.hpp"
#include "gc/shared/collectedHeap.inline.hpp"
#include "memory/allocation.inline.hpp"
#include "memory/universe.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/fieldType.hpp"
#include "runtime/handles.inline.hpp"
#include "utilities/macros.hpp"
// ciObjectFactory
//
// This class handles requests for the creation of new instances
// of ciObject and its subclasses. It contains a caching mechanism
// which ensures that for each oop, at most one ciObject is created.
// This invariant allows more efficient implementation of ciObject.
//
// Implementation note: the oop->ciObject mapping is represented as
// a table stored in an array. Even though objects are moved
// by the garbage collector, the compactor preserves their relative
// order; address comparison of oops (in perm space) is safe so long
// as we prohibit GC during our comparisons. We currently use binary
// search to find the oop in the table, and inserting a new oop
// into the table may be costly. If this cost ends up being
// problematic the underlying data structure can be switched to some
// sort of balanced binary tree.
GrowableArray<ciMetadata*>* ciObjectFactory::_shared_ci_metadata = NULL;
ciSymbol* ciObjectFactory::_shared_ci_symbols[vmSymbols::SID_LIMIT];
int ciObjectFactory::_shared_ident_limit = 0;
volatile bool ciObjectFactory::_initialized = false;
// ------------------------------------------------------------------
// ciObjectFactory::ciObjectFactory
ciObjectFactory::ciObjectFactory(Arena* arena,
int expected_size) {
for (int i = 0; i < NON_PERM_BUCKETS; i++) {
_non_perm_bucket[i] = NULL;
}
_non_perm_count = 0;
_next_ident = _shared_ident_limit;
_arena = arena;
_ci_metadata = new (arena) GrowableArray<ciMetadata*>(arena, expected_size, 0, NULL);
// If the shared ci objects exist append them to this factory's objects
if (_shared_ci_metadata != NULL) {
_ci_metadata->appendAll(_shared_ci_metadata);
}
_unloaded_methods = new (arena) GrowableArray<ciMethod*>(arena, 4, 0, NULL);
_unloaded_klasses = new (arena) GrowableArray<ciKlass*>(arena, 8, 0, NULL);
_unloaded_instances = new (arena) GrowableArray<ciInstance*>(arena, 4, 0, NULL);
_return_addresses =
new (arena) GrowableArray<ciReturnAddress*>(arena, 8, 0, NULL);
_symbols = new (arena) GrowableArray<ciSymbol*>(arena, 100, 0, NULL);
}
// ------------------------------------------------------------------
// ciObjectFactory::ciObjectFactory
void ciObjectFactory::initialize() {
ASSERT_IN_VM;
JavaThread* thread = JavaThread::current();
HandleMark handle_mark(thread);
// This Arena is long lived and exists in the resource mark of the
// compiler thread that initializes the initial ciObjectFactory which
// creates the shared ciObjects that all later ciObjectFactories use.
Arena* arena = new (mtCompiler) Arena(mtCompiler);
ciEnv initial(arena);
ciEnv* env = ciEnv::current();
env->_factory->init_shared_objects();
_initialized = true;
}
void ciObjectFactory::init_shared_objects() {
_next_ident = 1; // start numbering CI objects at 1
{
// Create the shared symbols, but not in _shared_ci_metadata.
int i;
for (i = vmSymbols::FIRST_SID; i < vmSymbols::SID_LIMIT; i++) {
Symbol* vmsym = vmSymbols::symbol_at((vmSymbols::SID) i);
assert(vmSymbols::find_sid(vmsym) == i, "1-1 mapping");
ciSymbol* sym = new (_arena) ciSymbol(vmsym, (vmSymbols::SID) i);
init_ident_of(sym);
_shared_ci_symbols[i] = sym;
}
#ifdef ASSERT
for (i = vmSymbols::FIRST_SID; i < vmSymbols::SID_LIMIT; i++) {
Symbol* vmsym = vmSymbols::symbol_at((vmSymbols::SID) i);
ciSymbol* sym = vm_symbol_at((vmSymbols::SID) i);
assert(sym->get_symbol() == vmsym, "oop must match");
}
assert(ciSymbol::void_class_signature()->get_symbol() == vmSymbols::void_class_signature(), "spot check");
#endif
}
_ci_metadata = new (_arena) GrowableArray<ciMetadata*>(_arena, 64, 0, NULL);
for (int i = T_BOOLEAN; i <= T_CONFLICT; i++) {
BasicType t = (BasicType)i;
if (type2name(t) != NULL && !is_reference_type(t) &&
t != T_NARROWOOP && t != T_NARROWKLASS) {
ciType::_basic_types[t] = new (_arena) ciType(t);
init_ident_of(ciType::_basic_types[t]);
}
}
ciEnv::_null_object_instance = new (_arena) ciNullObject();
init_ident_of(ciEnv::_null_object_instance);
#define WK_KLASS_DEFN(name, ignore_s) \
if (SystemDictionary::name##_is_loaded()) \
ciEnv::_##name = get_metadata(SystemDictionary::name())->as_instance_klass();
WK_KLASSES_DO(WK_KLASS_DEFN)
#undef WK_KLASS_DEFN
for (int len = -1; len != _ci_metadata->length(); ) {
len = _ci_metadata->length();
for (int i2 = 0; i2 < len; i2++) {
ciMetadata* obj = _ci_metadata->at(i2);
assert (obj->is_metadata(), "what else would it be?");
if (obj->is_loaded() && obj->is_instance_klass()) {
obj->as_instance_klass()->compute_nonstatic_fields();
}
}
}
ciEnv::_unloaded_cisymbol = ciObjectFactory::get_symbol(vmSymbols::dummy_symbol());
// Create dummy InstanceKlass and ObjArrayKlass object and assign them idents
ciEnv::_unloaded_ciinstance_klass = new (_arena) ciInstanceKlass(ciEnv::_unloaded_cisymbol, NULL, NULL);
init_ident_of(ciEnv::_unloaded_ciinstance_klass);
ciEnv::_unloaded_ciobjarrayklass = new (_arena) ciObjArrayKlass(ciEnv::_unloaded_cisymbol, ciEnv::_unloaded_ciinstance_klass, 1);
init_ident_of(ciEnv::_unloaded_ciobjarrayklass);
assert(ciEnv::_unloaded_ciobjarrayklass->is_obj_array_klass(), "just checking");
get_metadata(Universe::boolArrayKlassObj());
get_metadata(Universe::charArrayKlassObj());
get_metadata(Universe::floatArrayKlassObj());
get_metadata(Universe::doubleArrayKlassObj());
get_metadata(Universe::byteArrayKlassObj());
get_metadata(Universe::shortArrayKlassObj());
get_metadata(Universe::intArrayKlassObj());
get_metadata(Universe::longArrayKlassObj());
assert(_non_perm_count == 0, "no shared non-perm objects");
// The shared_ident_limit is the first ident number that will
// be used for non-shared objects. That is, numbers less than
// this limit are permanently assigned to shared CI objects,
// while the higher numbers are recycled afresh by each new ciEnv.
_shared_ident_limit = _next_ident;
_shared_ci_metadata = _ci_metadata;
}
ciSymbol* ciObjectFactory::get_symbol(Symbol* key) {
vmSymbols::SID sid = vmSymbols::find_sid(key);
if (sid != vmSymbols::NO_SID) {
// do not pollute the main cache with it
return vm_symbol_at(sid);
}
assert(vmSymbols::find_sid(key) == vmSymbols::NO_SID, "");
ciSymbol* s = new (arena()) ciSymbol(key, vmSymbols::NO_SID);
_symbols->push(s);
return s;
}
// Decrement the refcount when done on symbols referenced by this compilation.
void ciObjectFactory::remove_symbols() {
for (int i = 0; i < _symbols->length(); i++) {
ciSymbol* s = _symbols->at(i);
s->get_symbol()->decrement_refcount();
}
// Since _symbols is resource allocated we're not allowed to delete it
// but it'll go away just the same.
}
// ------------------------------------------------------------------
// ciObjectFactory::get
//
// Get the ciObject corresponding to some oop. If the ciObject has
// already been created, it is returned. Otherwise, a new ciObject
// is created.
ciObject* ciObjectFactory::get(oop key) {
ASSERT_IN_VM;
assert(Universe::heap()->is_in(key), "must be");
NonPermObject* &bucket = find_non_perm(key);
if (bucket != NULL) {
return bucket->object();
}
// The ciObject does not yet exist. Create it and insert it
// into the cache.
Handle keyHandle(Thread::current(), key);
ciObject* new_object = create_new_object(keyHandle());
assert(keyHandle() == new_object->get_oop(), "must be properly recorded");
init_ident_of(new_object);
assert(Universe::heap()->is_in(new_object->get_oop()), "must be");
// Not a perm-space object.
insert_non_perm(bucket, keyHandle(), new_object);
return new_object;
}
int ciObjectFactory::metadata_compare(Metadata* const& key, ciMetadata* const& elt) {
Metadata* value = elt->constant_encoding();
if (key < value) return -1;
else if (key > value) return 1;
else return 0;
}
// ------------------------------------------------------------------
// ciObjectFactory::cached_metadata
//
// Get the ciMetadata corresponding to some Metadata. If the ciMetadata has
// already been created, it is returned. Otherwise, null is returned.
ciMetadata* ciObjectFactory::cached_metadata(Metadata* key) {
ASSERT_IN_VM;
bool found = false;
int index = _ci_metadata->find_sorted<Metadata*, ciObjectFactory::metadata_compare>(key, found);
if (!found) {
return NULL;
}
return _ci_metadata->at(index)->as_metadata();
}
// ------------------------------------------------------------------
// ciObjectFactory::get_metadata
//
// Get the ciMetadata corresponding to some Metadata. If the ciMetadata has
// already been created, it is returned. Otherwise, a new ciMetadata
// is created.
ciMetadata* ciObjectFactory::get_metadata(Metadata* key) {
ASSERT_IN_VM;
#ifdef ASSERT
if (CIObjectFactoryVerify) {
Metadata* last = NULL;
for (int j = 0; j< _ci_metadata->length(); j++) {
Metadata* o = _ci_metadata->at(j)->constant_encoding();
assert(last < o, "out of order");
last = o;
}
}
#endif // ASSERT
int len = _ci_metadata->length();
bool found = false;
int index = _ci_metadata->find_sorted<Metadata*, ciObjectFactory::metadata_compare>(key, found);
#ifdef ASSERT
if (CIObjectFactoryVerify) {
for (int i=0; i<_ci_metadata->length(); i++) {
if (_ci_metadata->at(i)->constant_encoding() == key) {
assert(index == i, " bad lookup");
}
}
}
#endif
if (!found) {
// The ciMetadata does not yet exist. Create it and insert it
// into the cache.
ciMetadata* new_object = create_new_metadata(key);
init_ident_of(new_object);
assert(new_object->is_metadata(), "must be");
if (len != _ci_metadata->length()) {
// creating the new object has recursively entered new objects
// into the table. We need to recompute our index.
index = _ci_metadata->find_sorted<Metadata*, ciObjectFactory::metadata_compare>(key, found);
}
assert(!found, "no double insert");
_ci_metadata->insert_before(index, new_object);
return new_object;
}
return _ci_metadata->at(index)->as_metadata();
}
// ------------------------------------------------------------------
// ciObjectFactory::create_new_object
//
// Create a new ciObject from an oop.
//
// Implementation note: this functionality could be virtual behavior
// of the oop itself. For now, we explicitly marshal the object.
ciObject* ciObjectFactory::create_new_object(oop o) {
EXCEPTION_CONTEXT;
if (o->is_instance()) {
instanceHandle h_i(THREAD, (instanceOop)o);
if (java_lang_invoke_CallSite::is_instance(o))
return new (arena()) ciCallSite(h_i);
else if (java_lang_invoke_MemberName::is_instance(o))
return new (arena()) ciMemberName(h_i);
else if (java_lang_invoke_MethodHandle::is_instance(o))
return new (arena()) ciMethodHandle(h_i);
else if (java_lang_invoke_MethodType::is_instance(o))
return new (arena()) ciMethodType(h_i);
else
return new (arena()) ciInstance(h_i);
} else if (o->is_objArray()) {
objArrayHandle h_oa(THREAD, (objArrayOop)o);
return new (arena()) ciObjArray(h_oa);
} else if (o->is_typeArray()) {
typeArrayHandle h_ta(THREAD, (typeArrayOop)o);
return new (arena()) ciTypeArray(h_ta);
}
// The oop is of some type not supported by the compiler interface.
ShouldNotReachHere();
return NULL;
}
// ------------------------------------------------------------------
// ciObjectFactory::create_new_metadata
//
// Create a new ciMetadata from a Metadata*.
//
// Implementation note: in order to keep Metadata live, an auxiliary ciObject
// is used, which points to it's holder.
ciMetadata* ciObjectFactory::create_new_metadata(Metadata* o) {
EXCEPTION_CONTEXT;
if (o->is_klass()) {
Klass* k = (Klass*)o;
if (k->is_instance_klass()) {
return new (arena()) ciInstanceKlass(k);
} else if (k->is_objArray_klass()) {
return new (arena()) ciObjArrayKlass(k);
} else if (k->is_typeArray_klass()) {
return new (arena()) ciTypeArrayKlass(k);
}
} else if (o->is_method()) {
methodHandle h_m(THREAD, (Method*)o);
ciEnv *env = CURRENT_THREAD_ENV;
ciInstanceKlass* holder = env->get_instance_klass(h_m()->method_holder());
return new (arena()) ciMethod(h_m, holder);
} else if (o->is_methodData()) {
// Hold methodHandle alive - might not be necessary ???
methodHandle h_m(THREAD, ((MethodData*)o)->method());
return new (arena()) ciMethodData((MethodData*)o);
}
// The Metadata* is of some type not supported by the compiler interface.
ShouldNotReachHere();
return NULL;
}
//------------------------------------------------------------------
// ciObjectFactory::get_unloaded_method
//
// Get the ciMethod representing an unloaded/unfound method.
//
// Implementation note: unloaded methods are currently stored in
// an unordered array, requiring a linear-time lookup for each
// unloaded method. This may need to change.
ciMethod* ciObjectFactory::get_unloaded_method(ciInstanceKlass* holder,
ciSymbol* name,
ciSymbol* signature,
ciInstanceKlass* accessor) {
ciSignature* that = NULL;
for (int i = 0; i < _unloaded_methods->length(); i++) {
ciMethod* entry = _unloaded_methods->at(i);
if (entry->holder()->equals(holder) &&
entry->name()->equals(name) &&
entry->signature()->as_symbol()->equals(signature)) {
// Short-circuit slow resolve.
if (entry->signature()->accessing_klass() == accessor) {
// We've found a match.
return entry;
} else {
// Lazily create ciSignature
if (that == NULL) that = new (arena()) ciSignature(accessor, constantPoolHandle(), signature);
if (entry->signature()->equals(that)) {
// We've found a match.
return entry;
}
}
}
}
// This is a new unloaded method. Create it and stick it in
// the cache.
ciMethod* new_method = new (arena()) ciMethod(holder, name, signature, accessor);
init_ident_of(new_method);
_unloaded_methods->append(new_method);
return new_method;
}
//------------------------------------------------------------------
// ciObjectFactory::get_unloaded_klass
//
// Get a ciKlass representing an unloaded klass.
//
// Implementation note: unloaded klasses are currently stored in
// an unordered array, requiring a linear-time lookup for each
// unloaded klass. This may need to change.
ciKlass* ciObjectFactory::get_unloaded_klass(ciKlass* accessing_klass,
ciSymbol* name,
bool create_if_not_found) {
EXCEPTION_CONTEXT;
oop loader = NULL;
oop domain = NULL;
if (accessing_klass != NULL) {
loader = accessing_klass->loader();
domain = accessing_klass->protection_domain();
}
for (int i=0; i<_unloaded_klasses->length(); i++) {
ciKlass* entry = _unloaded_klasses->at(i);
if (entry->name()->equals(name) &&
entry->loader() == loader &&
entry->protection_domain() == domain) {
// We've found a match.
return entry;
}
}
if (!create_if_not_found)
return NULL;
// This is a new unloaded klass. Create it and stick it in
// the cache.
ciKlass* new_klass = NULL;
// Two cases: this is an unloaded ObjArrayKlass or an
// unloaded InstanceKlass. Deal with both.
if (name->char_at(0) == '[') {
// Decompose the name.'
FieldArrayInfo fd;
BasicType element_type = FieldType::get_array_info(name->get_symbol(),
fd, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
CURRENT_THREAD_ENV->record_out_of_memory_failure();
return ciEnv::_unloaded_ciobjarrayklass;
}
int dimension = fd.dimension();
assert(element_type != T_ARRAY, "unsuccessful decomposition");
ciKlass* element_klass = NULL;
if (element_type == T_OBJECT) {
ciEnv *env = CURRENT_THREAD_ENV;
ciSymbol* ci_name = env->get_symbol(fd.object_key());
element_klass =
env->get_klass_by_name(accessing_klass, ci_name, false)->as_instance_klass();
} else {
assert(dimension > 1, "one dimensional type arrays are always loaded.");
// The type array itself takes care of one of the dimensions.
dimension--;
// The element klass is a TypeArrayKlass.
element_klass = ciTypeArrayKlass::make(element_type);
}
new_klass = new (arena()) ciObjArrayKlass(name, element_klass, dimension);
} else {
jobject loader_handle = NULL;
jobject domain_handle = NULL;
if (accessing_klass != NULL) {
loader_handle = accessing_klass->loader_handle();
domain_handle = accessing_klass->protection_domain_handle();
}
new_klass = new (arena()) ciInstanceKlass(name, loader_handle, domain_handle);
}
init_ident_of(new_klass);
_unloaded_klasses->append(new_klass);
return new_klass;
}
//------------------------------------------------------------------
// ciObjectFactory::get_unloaded_instance
//
// Get a ciInstance representing an as-yet undetermined instance of a given class.
//
ciInstance* ciObjectFactory::get_unloaded_instance(ciInstanceKlass* instance_klass) {
for (int i=0; i<_unloaded_instances->length(); i++) {
ciInstance* entry = _unloaded_instances->at(i);
if (entry->klass()->equals(instance_klass)) {
// We've found a match.
return entry;
}
}
// This is a new unloaded instance. Create it and stick it in
// the cache.
ciInstance* new_instance = new (arena()) ciInstance(instance_klass);
init_ident_of(new_instance);
_unloaded_instances->append(new_instance);
// make sure it looks the way we want:
assert(!new_instance->is_loaded(), "");
assert(new_instance->klass() == instance_klass, "");
return new_instance;
}
//------------------------------------------------------------------
// ciObjectFactory::get_unloaded_klass_mirror
//
// Get a ciInstance representing an unresolved klass mirror.
//
// Currently, this ignores the parameters and returns a unique unloaded instance.
ciInstance* ciObjectFactory::get_unloaded_klass_mirror(ciKlass* type) {
assert(ciEnv::_Class_klass != NULL, "");
return get_unloaded_instance(ciEnv::_Class_klass->as_instance_klass());
}
//------------------------------------------------------------------
// ciObjectFactory::get_unloaded_method_handle_constant
//
// Get a ciInstance representing an unresolved method handle constant.
//
// Currently, this ignores the parameters and returns a unique unloaded instance.
ciInstance* ciObjectFactory::get_unloaded_method_handle_constant(ciKlass* holder,
ciSymbol* name,
ciSymbol* signature,
int ref_kind) {
if (ciEnv::_MethodHandle_klass == NULL) return NULL;
return get_unloaded_instance(ciEnv::_MethodHandle_klass->as_instance_klass());
}
//------------------------------------------------------------------
// ciObjectFactory::get_unloaded_method_type_constant
//
// Get a ciInstance representing an unresolved method type constant.
//
// Currently, this ignores the parameters and returns a unique unloaded instance.
ciInstance* ciObjectFactory::get_unloaded_method_type_constant(ciSymbol* signature) {
if (ciEnv::_MethodType_klass == NULL) return NULL;
return get_unloaded_instance(ciEnv::_MethodType_klass->as_instance_klass());
}
ciInstance* ciObjectFactory::get_unloaded_object_constant() {
if (ciEnv::_Object_klass == NULL) return NULL;
return get_unloaded_instance(ciEnv::_Object_klass->as_instance_klass());
}
//------------------------------------------------------------------
// ciObjectFactory::get_empty_methodData
//
// Get the ciMethodData representing the methodData for a method with
// none.
ciMethodData* ciObjectFactory::get_empty_methodData() {
ciMethodData* new_methodData = new (arena()) ciMethodData();
init_ident_of(new_methodData);
return new_methodData;
}
//------------------------------------------------------------------
// ciObjectFactory::get_return_address
//
// Get a ciReturnAddress for a specified bci.
ciReturnAddress* ciObjectFactory::get_return_address(int bci) {
for (int i=0; i<_return_addresses->length(); i++) {
ciReturnAddress* entry = _return_addresses->at(i);
if (entry->bci() == bci) {
// We've found a match.
return entry;
}
}
ciReturnAddress* new_ret_addr = new (arena()) ciReturnAddress(bci);
init_ident_of(new_ret_addr);
_return_addresses->append(new_ret_addr);
return new_ret_addr;
}
// ------------------------------------------------------------------
// ciObjectFactory::init_ident_of
void ciObjectFactory::init_ident_of(ciBaseObject* obj) {
obj->set_ident(_next_ident++);
}
static ciObjectFactory::NonPermObject* emptyBucket = NULL;
// ------------------------------------------------------------------
// ciObjectFactory::find_non_perm
//
// Use a small hash table, hashed on the klass of the key.
// If there is no entry in the cache corresponding to this oop, return
// the null tail of the bucket into which the oop should be inserted.
ciObjectFactory::NonPermObject* &ciObjectFactory::find_non_perm(oop key) {
assert(Universe::heap()->is_in(key), "must be");
ciMetadata* klass = get_metadata(key->klass());
NonPermObject* *bp = &_non_perm_bucket[(unsigned) klass->hash() % NON_PERM_BUCKETS];
for (NonPermObject* p; (p = (*bp)) != NULL; bp = &p->next()) {
if (is_equal(p, key)) break;
}
return (*bp);
}
// ------------------------------------------------------------------
// Code for for NonPermObject
//
inline ciObjectFactory::NonPermObject::NonPermObject(ciObjectFactory::NonPermObject* &bucket, oop key, ciObject* object) {
assert(ciObjectFactory::is_initialized(), "");
_object = object;
_next = bucket;
bucket = this;
}
// ------------------------------------------------------------------
// ciObjectFactory::insert_non_perm
//
// Insert a ciObject into the non-perm table.
void ciObjectFactory::insert_non_perm(ciObjectFactory::NonPermObject* &where, oop key, ciObject* obj) {
assert(Universe::heap()->is_in_or_null(key), "must be");
assert(&where != &emptyBucket, "must not try to fill empty bucket");
NonPermObject* p = new (arena()) NonPermObject(where, key, obj);
assert(where == p && is_equal(p, key) && p->object() == obj, "entry must match");
assert(find_non_perm(key) == p, "must find the same spot");
++_non_perm_count;
}
// ------------------------------------------------------------------
// ciObjectFactory::vm_symbol_at
// Get the ciSymbol corresponding to some index in vmSymbols.
ciSymbol* ciObjectFactory::vm_symbol_at(int index) {
assert(index >= vmSymbols::FIRST_SID && index < vmSymbols::SID_LIMIT, "oob");
return _shared_ci_symbols[index];
}
// ------------------------------------------------------------------
// ciObjectFactory::metadata_do
void ciObjectFactory::metadata_do(MetadataClosure* f) {
if (_ci_metadata == NULL) return;
for (int j = 0; j< _ci_metadata->length(); j++) {
Metadata* o = _ci_metadata->at(j)->constant_encoding();
f->do_metadata(o);
}
}
// ------------------------------------------------------------------
// ciObjectFactory::print_contents_impl
void ciObjectFactory::print_contents_impl() {
int len = _ci_metadata->length();
tty->print_cr("ciObjectFactory (%d) meta data contents:", len);
for (int i=0; i<len; i++) {
_ci_metadata->at(i)->print();
tty->cr();
}
}
// ------------------------------------------------------------------
// ciObjectFactory::print_contents
void ciObjectFactory::print_contents() {
print();
tty->cr();
GUARDED_VM_ENTRY(print_contents_impl();)
}
// ------------------------------------------------------------------
// ciObjectFactory::print
//
// Print debugging information about the object factory
void ciObjectFactory::print() {
tty->print("<ciObjectFactory oops=%d metadata=%d unloaded_methods=%d unloaded_instances=%d unloaded_klasses=%d>",
_non_perm_count, _ci_metadata->length(), _unloaded_methods->length(),
_unloaded_instances->length(),
_unloaded_klasses->length());
}