author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 46329 | hotspot/src/share/vm/ci/ciObjectFactory.cpp@53ccc37bda19 |
child 47887 | e20d8f168bb6 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "ci/ciCallSite.hpp" |
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#include "ci/ciInstance.hpp" |
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#include "ci/ciInstanceKlass.hpp" |
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#include "ci/ciMemberName.hpp" |
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#include "ci/ciMethod.hpp" |
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#include "ci/ciMethodData.hpp" |
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#include "ci/ciMethodHandle.hpp" |
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#include "ci/ciMethodType.hpp" |
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#include "ci/ciNullObject.hpp" |
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#include "ci/ciObjArray.hpp" |
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#include "ci/ciObjArrayKlass.hpp" |
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#include "ci/ciObject.hpp" |
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#include "ci/ciObjectFactory.hpp" |
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#include "ci/ciSymbol.hpp" |
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#include "ci/ciTypeArray.hpp" |
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#include "ci/ciTypeArrayKlass.hpp" |
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#include "ci/ciUtilities.hpp" |
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#include "classfile/javaClasses.inline.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "gc/shared/collectedHeap.inline.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/fieldType.hpp" |
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#include "utilities/macros.hpp" |
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#if INCLUDE_ALL_GCS |
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# include "gc/g1/g1SATBCardTableModRefBS.hpp" |
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#endif |
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// ciObjectFactory |
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// |
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// This class handles requests for the creation of new instances |
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// of ciObject and its subclasses. It contains a caching mechanism |
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// which ensures that for each oop, at most one ciObject is created. |
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// This invariant allows more efficient implementation of ciObject. |
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// |
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// Implementation note: the oop->ciObject mapping is represented as |
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// a table stored in an array. Even though objects are moved |
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// by the garbage collector, the compactor preserves their relative |
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// order; address comparison of oops (in perm space) is safe so long |
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// as we prohibit GC during our comparisons. We currently use binary |
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// search to find the oop in the table, and inserting a new oop |
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// into the table may be costly. If this cost ends up being |
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// problematic the underlying data structure can be switched to some |
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// sort of balanced binary tree. |
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GrowableArray<ciMetadata*>* ciObjectFactory::_shared_ci_metadata = NULL; |
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ciSymbol* ciObjectFactory::_shared_ci_symbols[vmSymbols::SID_LIMIT]; |
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int ciObjectFactory::_shared_ident_limit = 0; |
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volatile bool ciObjectFactory::_initialized = false; |
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// ------------------------------------------------------------------ |
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// ciObjectFactory::ciObjectFactory |
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ciObjectFactory::ciObjectFactory(Arena* arena, |
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int expected_size) { |
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for (int i = 0; i < NON_PERM_BUCKETS; i++) { |
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_non_perm_bucket[i] = NULL; |
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} |
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_non_perm_count = 0; |
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_next_ident = _shared_ident_limit; |
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_arena = arena; |
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_ci_metadata = new (arena) GrowableArray<ciMetadata*>(arena, expected_size, 0, NULL); |
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// If the shared ci objects exist append them to this factory's objects |
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if (_shared_ci_metadata != NULL) { |
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_ci_metadata->appendAll(_shared_ci_metadata); |
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} |
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_unloaded_methods = new (arena) GrowableArray<ciMethod*>(arena, 4, 0, NULL); |
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_unloaded_klasses = new (arena) GrowableArray<ciKlass*>(arena, 8, 0, NULL); |
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_unloaded_instances = new (arena) GrowableArray<ciInstance*>(arena, 4, 0, NULL); |
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_return_addresses = |
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new (arena) GrowableArray<ciReturnAddress*>(arena, 8, 0, NULL); |
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_symbols = new (arena) GrowableArray<ciSymbol*>(arena, 100, 0, NULL); |
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} |
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// ------------------------------------------------------------------ |
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// ciObjectFactory::ciObjectFactory |
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void ciObjectFactory::initialize() { |
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ASSERT_IN_VM; |
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JavaThread* thread = JavaThread::current(); |
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HandleMark handle_mark(thread); |
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// This Arena is long lived and exists in the resource mark of the |
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// compiler thread that initializes the initial ciObjectFactory which |
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// creates the shared ciObjects that all later ciObjectFactories use. |
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Arena* arena = new (mtCompiler) Arena(mtCompiler); |
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ciEnv initial(arena); |
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ciEnv* env = ciEnv::current(); |
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env->_factory->init_shared_objects(); |
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_initialized = true; |
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} |
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void ciObjectFactory::init_shared_objects() { |
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_next_ident = 1; // start numbering CI objects at 1 |
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{ |
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// Create the shared symbols, but not in _shared_ci_metadata. |
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int i; |
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for (i = vmSymbols::FIRST_SID; i < vmSymbols::SID_LIMIT; i++) { |
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Symbol* vmsym = vmSymbols::symbol_at((vmSymbols::SID) i); |
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assert(vmSymbols::find_sid(vmsym) == i, "1-1 mapping"); |
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ciSymbol* sym = new (_arena) ciSymbol(vmsym, (vmSymbols::SID) i); |
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init_ident_of(sym); |
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_shared_ci_symbols[i] = sym; |
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} |
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#ifdef ASSERT |
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for (i = vmSymbols::FIRST_SID; i < vmSymbols::SID_LIMIT; i++) { |
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Symbol* vmsym = vmSymbols::symbol_at((vmSymbols::SID) i); |
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ciSymbol* sym = vm_symbol_at((vmSymbols::SID) i); |
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assert(sym->get_symbol() == vmsym, "oop must match"); |
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} |
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assert(ciSymbol::void_class_signature()->get_symbol() == vmSymbols::void_class_signature(), "spot check"); |
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#endif |
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} |
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_ci_metadata = new (_arena) GrowableArray<ciMetadata*>(_arena, 64, 0, NULL); |
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for (int i = T_BOOLEAN; i <= T_CONFLICT; i++) { |
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BasicType t = (BasicType)i; |
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if (type2name(t) != NULL && t != T_OBJECT && t != T_ARRAY && t != T_NARROWOOP && t != T_NARROWKLASS) { |
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ciType::_basic_types[t] = new (_arena) ciType(t); |
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init_ident_of(ciType::_basic_types[t]); |
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} |
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} |
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ciEnv::_null_object_instance = new (_arena) ciNullObject(); |
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init_ident_of(ciEnv::_null_object_instance); |
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#define WK_KLASS_DEFN(name, ignore_s, opt) \ |
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if (SystemDictionary::name() != NULL) \ |
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ciEnv::_##name = get_metadata(SystemDictionary::name())->as_instance_klass(); |
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WK_KLASSES_DO(WK_KLASS_DEFN) |
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#undef WK_KLASS_DEFN |
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for (int len = -1; len != _ci_metadata->length(); ) { |
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len = _ci_metadata->length(); |
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for (int i2 = 0; i2 < len; i2++) { |
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ciMetadata* obj = _ci_metadata->at(i2); |
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assert (obj->is_metadata(), "what else would it be?"); |
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if (obj->is_loaded() && obj->is_instance_klass()) { |
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obj->as_instance_klass()->compute_nonstatic_fields(); |
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} |
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} |
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} |
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ciEnv::_unloaded_cisymbol = ciObjectFactory::get_symbol(vmSymbols::dummy_symbol()); |
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// Create dummy InstanceKlass and ObjArrayKlass object and assign them idents |
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ciEnv::_unloaded_ciinstance_klass = new (_arena) ciInstanceKlass(ciEnv::_unloaded_cisymbol, NULL, NULL); |
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init_ident_of(ciEnv::_unloaded_ciinstance_klass); |
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ciEnv::_unloaded_ciobjarrayklass = new (_arena) ciObjArrayKlass(ciEnv::_unloaded_cisymbol, ciEnv::_unloaded_ciinstance_klass, 1); |
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init_ident_of(ciEnv::_unloaded_ciobjarrayklass); |
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assert(ciEnv::_unloaded_ciobjarrayklass->is_obj_array_klass(), "just checking"); |
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get_metadata(Universe::boolArrayKlassObj()); |
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get_metadata(Universe::charArrayKlassObj()); |
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get_metadata(Universe::singleArrayKlassObj()); |
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get_metadata(Universe::doubleArrayKlassObj()); |
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get_metadata(Universe::byteArrayKlassObj()); |
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get_metadata(Universe::shortArrayKlassObj()); |
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get_metadata(Universe::intArrayKlassObj()); |
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get_metadata(Universe::longArrayKlassObj()); |
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assert(_non_perm_count == 0, "no shared non-perm objects"); |
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// The shared_ident_limit is the first ident number that will |
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// be used for non-shared objects. That is, numbers less than |
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// this limit are permanently assigned to shared CI objects, |
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// while the higher numbers are recycled afresh by each new ciEnv. |
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_shared_ident_limit = _next_ident; |
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_shared_ci_metadata = _ci_metadata; |
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} |
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ciSymbol* ciObjectFactory::get_symbol(Symbol* key) { |
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vmSymbols::SID sid = vmSymbols::find_sid(key); |
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if (sid != vmSymbols::NO_SID) { |
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// do not pollute the main cache with it |
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return vm_symbol_at(sid); |
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} |
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assert(vmSymbols::find_sid(key) == vmSymbols::NO_SID, ""); |
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ciSymbol* s = new (arena()) ciSymbol(key, vmSymbols::NO_SID); |
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_symbols->push(s); |
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return s; |
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} |
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// Decrement the refcount when done on symbols referenced by this compilation. |
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void ciObjectFactory::remove_symbols() { |
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for (int i = 0; i < _symbols->length(); i++) { |
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ciSymbol* s = _symbols->at(i); |
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s->get_symbol()->decrement_refcount(); |
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} |
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// Since _symbols is resource allocated we're not allowed to delete it |
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// but it'll go away just the same. |
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} |
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// ------------------------------------------------------------------ |
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// ciObjectFactory::get |
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// |
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// Get the ciObject corresponding to some oop. If the ciObject has |
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// already been created, it is returned. Otherwise, a new ciObject |
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// is created. |
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ciObject* ciObjectFactory::get(oop key) { |
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ASSERT_IN_VM; |
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assert(Universe::heap()->is_in_reserved(key), "must be"); |
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|
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NonPermObject* &bucket = find_non_perm(key); |
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if (bucket != NULL) { |
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return bucket->object(); |
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} |
1 | 249 |
|
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// The ciObject does not yet exist. Create it and insert it |
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// into the cache. |
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Handle keyHandle(Thread::current(), key); |
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ciObject* new_object = create_new_object(keyHandle()); |
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assert(keyHandle() == new_object->get_oop(), "must be properly recorded"); |
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init_ident_of(new_object); |
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assert(Universe::heap()->is_in_reserved(new_object->get_oop()), "must be"); |
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|
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// Not a perm-space object. |
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insert_non_perm(bucket, keyHandle(), new_object); |
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return new_object; |
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} |
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|
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int ciObjectFactory::metadata_compare(Metadata* const& key, ciMetadata* const& elt) { |
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Metadata* value = elt->constant_encoding(); |
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if (key < value) return -1; |
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else if (key > value) return 1; |
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else return 0; |
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} |
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// ------------------------------------------------------------------ |
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// ciObjectFactory::get_metadata |
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// |
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// Get the ciMetadata corresponding to some Metadata. If the ciMetadata has |
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// already been created, it is returned. Otherwise, a new ciMetadata |
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// is created. |
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ciMetadata* ciObjectFactory::get_metadata(Metadata* key) { |
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ASSERT_IN_VM; |
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|
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#ifdef ASSERT |
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if (CIObjectFactoryVerify) { |
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Metadata* last = NULL; |
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for (int j = 0; j< _ci_metadata->length(); j++) { |
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Metadata* o = _ci_metadata->at(j)->constant_encoding(); |
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assert(last < o, "out of order"); |
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last = o; |
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} |
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} |
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#endif // ASSERT |
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int len = _ci_metadata->length(); |
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bool found = false; |
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int index = _ci_metadata->find_sorted<Metadata*, ciObjectFactory::metadata_compare>(key, found); |
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#ifdef ASSERT |
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if (CIObjectFactoryVerify) { |
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for (int i=0; i<_ci_metadata->length(); i++) { |
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if (_ci_metadata->at(i)->constant_encoding() == key) { |
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assert(index == i, " bad lookup"); |
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} |
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} |
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} |
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#endif |
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|
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if (!found) { |
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// The ciMetadata does not yet exist. Create it and insert it |
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// into the cache. |
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ciMetadata* new_object = create_new_metadata(key); |
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init_ident_of(new_object); |
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assert(new_object->is_metadata(), "must be"); |
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308 |
|
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if (len != _ci_metadata->length()) { |
1 | 310 |
// creating the new object has recursively entered new objects |
311 |
// into the table. We need to recompute our index. |
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index = _ci_metadata->find_sorted<Metadata*, ciObjectFactory::metadata_compare>(key, found); |
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} |
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assert(!found, "no double insert"); |
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_ci_metadata->insert_before(index, new_object); |
1 | 316 |
return new_object; |
317 |
} |
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return _ci_metadata->at(index)->as_metadata(); |
1 | 319 |
} |
320 |
||
321 |
// ------------------------------------------------------------------ |
|
322 |
// ciObjectFactory::create_new_object |
|
323 |
// |
|
324 |
// Create a new ciObject from an oop. |
|
325 |
// |
|
326 |
// Implementation note: this functionality could be virtual behavior |
|
327 |
// of the oop itself. For now, we explicitly marshal the object. |
|
328 |
ciObject* ciObjectFactory::create_new_object(oop o) { |
|
329 |
EXCEPTION_CONTEXT; |
|
330 |
||
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if (o->is_instance()) { |
1 | 332 |
instanceHandle h_i(THREAD, (instanceOop)o); |
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if (java_lang_invoke_CallSite::is_instance(o)) |
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return new (arena()) ciCallSite(h_i); |
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else if (java_lang_invoke_MemberName::is_instance(o)) |
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return new (arena()) ciMemberName(h_i); |
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else if (java_lang_invoke_MethodHandle::is_instance(o)) |
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return new (arena()) ciMethodHandle(h_i); |
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else if (java_lang_invoke_MethodType::is_instance(o)) |
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return new (arena()) ciMethodType(h_i); |
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else |
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return new (arena()) ciInstance(h_i); |
1 | 343 |
} else if (o->is_objArray()) { |
344 |
objArrayHandle h_oa(THREAD, (objArrayOop)o); |
|
345 |
return new (arena()) ciObjArray(h_oa); |
|
346 |
} else if (o->is_typeArray()) { |
|
347 |
typeArrayHandle h_ta(THREAD, (typeArrayOop)o); |
|
348 |
return new (arena()) ciTypeArray(h_ta); |
|
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} |
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350 |
|
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351 |
// The oop is of some type not supported by the compiler interface. |
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ShouldNotReachHere(); |
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353 |
return NULL; |
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354 |
} |
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355 |
|
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356 |
// ------------------------------------------------------------------ |
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// ciObjectFactory::create_new_metadata |
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// |
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// Create a new ciMetadata from a Metadata*. |
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// |
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// Implementation note: in order to keep Metadata live, an auxiliary ciObject |
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// is used, which points to it's holder. |
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ciMetadata* ciObjectFactory::create_new_metadata(Metadata* o) { |
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EXCEPTION_CONTEXT; |
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365 |
|
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// Hold metadata from unloading by keeping it's holder alive. |
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if (_initialized && o->is_klass()) { |
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Klass* holder = ((Klass*)o); |
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if (holder->is_instance_klass() && InstanceKlass::cast(holder)->is_anonymous()) { |
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// Though ciInstanceKlass records class loader oop, it's not enough to keep |
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// VM anonymous classes alive (loader == NULL). Klass holder should be used instead. |
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// It is enough to record a ciObject, since cached elements are never removed |
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// during ciObjectFactory lifetime. ciObjectFactory itself is created for |
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// every compilation and lives for the whole duration of the compilation. |
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ciObject* h = get(holder->klass_holder()); |
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|
376 |
} |
f4aa22a934e4
8060147: SIGSEGV in Metadata::mark_on_stack() while marking metadata in ciEnv
vlivanov
parents:
25946
diff
changeset
|
377 |
} |
f4aa22a934e4
8060147: SIGSEGV in Metadata::mark_on_stack() while marking metadata in ciEnv
vlivanov
parents:
25946
diff
changeset
|
378 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
379 |
if (o->is_klass()) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
380 |
Klass* k = (Klass*)o; |
33611
9abd65805e19
8139203: Consistent naming for klass type predicates
coleenp
parents:
33589
diff
changeset
|
381 |
if (k->is_instance_klass()) { |
46329
53ccc37bda19
8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents:
46271
diff
changeset
|
382 |
return new (arena()) ciInstanceKlass(k); |
33611
9abd65805e19
8139203: Consistent naming for klass type predicates
coleenp
parents:
33589
diff
changeset
|
383 |
} else if (k->is_objArray_klass()) { |
46329
53ccc37bda19
8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents:
46271
diff
changeset
|
384 |
return new (arena()) ciObjArrayKlass(k); |
33611
9abd65805e19
8139203: Consistent naming for klass type predicates
coleenp
parents:
33589
diff
changeset
|
385 |
} else if (k->is_typeArray_klass()) { |
46329
53ccc37bda19
8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents:
46271
diff
changeset
|
386 |
return new (arena()) ciTypeArrayKlass(k); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
387 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
388 |
} else if (o->is_method()) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
389 |
methodHandle h_m(THREAD, (Method*)o); |
27644
f4aa22a934e4
8060147: SIGSEGV in Metadata::mark_on_stack() while marking metadata in ciEnv
vlivanov
parents:
25946
diff
changeset
|
390 |
ciEnv *env = CURRENT_THREAD_ENV; |
f4aa22a934e4
8060147: SIGSEGV in Metadata::mark_on_stack() while marking metadata in ciEnv
vlivanov
parents:
25946
diff
changeset
|
391 |
ciInstanceKlass* holder = env->get_instance_klass(h_m()->method_holder()); |
f4aa22a934e4
8060147: SIGSEGV in Metadata::mark_on_stack() while marking metadata in ciEnv
vlivanov
parents:
25946
diff
changeset
|
392 |
return new (arena()) ciMethod(h_m, holder); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
393 |
} else if (o->is_methodData()) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
394 |
// Hold methodHandle alive - might not be necessary ??? |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
395 |
methodHandle h_m(THREAD, ((MethodData*)o)->method()); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
396 |
return new (arena()) ciMethodData((MethodData*)o); |
1 | 397 |
} |
398 |
||
27644
f4aa22a934e4
8060147: SIGSEGV in Metadata::mark_on_stack() while marking metadata in ciEnv
vlivanov
parents:
25946
diff
changeset
|
399 |
// The Metadata* is of some type not supported by the compiler interface. |
1 | 400 |
ShouldNotReachHere(); |
401 |
return NULL; |
|
402 |
} |
|
403 |
||
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
404 |
// ------------------------------------------------------------------ |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
405 |
// ciObjectFactory::ensure_metadata_alive |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
406 |
// |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
407 |
// Ensure that the metadata wrapped by the ciMetadata is kept alive by GC. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
408 |
// This is primarily useful for metadata which is considered as weak roots |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
409 |
// by the GC but need to be strong roots if reachable from a current compilation. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
410 |
// |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
411 |
void ciObjectFactory::ensure_metadata_alive(ciMetadata* m) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
412 |
ASSERT_IN_VM; // We're handling raw oops here. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
413 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
414 |
#if INCLUDE_ALL_GCS |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
415 |
if (!UseG1GC) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
416 |
return; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
417 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
418 |
Klass* metadata_owner_klass; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
419 |
if (m->is_klass()) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
420 |
metadata_owner_klass = m->as_klass()->get_Klass(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
421 |
} else if (m->is_method()) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
422 |
metadata_owner_klass = m->as_method()->get_Method()->constants()->pool_holder(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
423 |
} else { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
424 |
fatal("Not implemented for other types of metadata"); |
33589
7cbd1b2c139b
8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
goetz
parents:
30764
diff
changeset
|
425 |
return; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
426 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
427 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
428 |
oop metadata_holder = metadata_owner_klass->klass_holder(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
429 |
if (metadata_holder != NULL) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
430 |
G1SATBCardTableModRefBS::enqueue(metadata_holder); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
431 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
432 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
433 |
#endif |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
434 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
435 |
|
1 | 436 |
//------------------------------------------------------------------ |
437 |
// ciObjectFactory::get_unloaded_method |
|
438 |
// |
|
439 |
// Get the ciMethod representing an unloaded/unfound method. |
|
440 |
// |
|
441 |
// Implementation note: unloaded methods are currently stored in |
|
442 |
// an unordered array, requiring a linear-time lookup for each |
|
443 |
// unloaded method. This may need to change. |
|
444 |
ciMethod* ciObjectFactory::get_unloaded_method(ciInstanceKlass* holder, |
|
445 |
ciSymbol* name, |
|
10734
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
446 |
ciSymbol* signature, |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
447 |
ciInstanceKlass* accessor) { |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
448 |
ciSignature* that = NULL; |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
449 |
for (int i = 0; i < _unloaded_methods->length(); i++) { |
1 | 450 |
ciMethod* entry = _unloaded_methods->at(i); |
451 |
if (entry->holder()->equals(holder) && |
|
452 |
entry->name()->equals(name) && |
|
453 |
entry->signature()->as_symbol()->equals(signature)) { |
|
10734
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
454 |
// Short-circuit slow resolve. |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
455 |
if (entry->signature()->accessing_klass() == accessor) { |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
456 |
// We've found a match. |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
457 |
return entry; |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
458 |
} else { |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
459 |
// Lazily create ciSignature |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
460 |
if (that == NULL) that = new (arena()) ciSignature(accessor, constantPoolHandle(), signature); |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
461 |
if (entry->signature()->equals(that)) { |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
462 |
// We've found a match. |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
463 |
return entry; |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
464 |
} |
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
465 |
} |
1 | 466 |
} |
467 |
} |
|
468 |
||
469 |
// This is a new unloaded method. Create it and stick it in |
|
470 |
// the cache. |
|
10734
065435337883
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
twisti
parents:
8725
diff
changeset
|
471 |
ciMethod* new_method = new (arena()) ciMethod(holder, name, signature, accessor); |
1 | 472 |
|
473 |
init_ident_of(new_method); |
|
474 |
_unloaded_methods->append(new_method); |
|
475 |
||
476 |
return new_method; |
|
477 |
} |
|
478 |
||
479 |
//------------------------------------------------------------------ |
|
480 |
// ciObjectFactory::get_unloaded_klass |
|
481 |
// |
|
482 |
// Get a ciKlass representing an unloaded klass. |
|
483 |
// |
|
484 |
// Implementation note: unloaded klasses are currently stored in |
|
485 |
// an unordered array, requiring a linear-time lookup for each |
|
486 |
// unloaded klass. This may need to change. |
|
487 |
ciKlass* ciObjectFactory::get_unloaded_klass(ciKlass* accessing_klass, |
|
488 |
ciSymbol* name, |
|
489 |
bool create_if_not_found) { |
|
490 |
EXCEPTION_CONTEXT; |
|
491 |
oop loader = NULL; |
|
492 |
oop domain = NULL; |
|
493 |
if (accessing_klass != NULL) { |
|
494 |
loader = accessing_klass->loader(); |
|
495 |
domain = accessing_klass->protection_domain(); |
|
496 |
} |
|
497 |
for (int i=0; i<_unloaded_klasses->length(); i++) { |
|
498 |
ciKlass* entry = _unloaded_klasses->at(i); |
|
499 |
if (entry->name()->equals(name) && |
|
500 |
entry->loader() == loader && |
|
501 |
entry->protection_domain() == domain) { |
|
502 |
// We've found a match. |
|
503 |
return entry; |
|
504 |
} |
|
505 |
} |
|
506 |
||
507 |
if (!create_if_not_found) |
|
508 |
return NULL; |
|
509 |
||
510 |
// This is a new unloaded klass. Create it and stick it in |
|
511 |
// the cache. |
|
512 |
ciKlass* new_klass = NULL; |
|
513 |
||
13952
e3cf184080bc
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
13728
diff
changeset
|
514 |
// Two cases: this is an unloaded ObjArrayKlass or an |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
515 |
// unloaded InstanceKlass. Deal with both. |
1 | 516 |
if (name->byte_at(0) == '[') { |
517 |
// Decompose the name.' |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
518 |
FieldArrayInfo fd; |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
519 |
BasicType element_type = FieldType::get_array_info(name->get_symbol(), |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
520 |
fd, THREAD); |
1 | 521 |
if (HAS_PENDING_EXCEPTION) { |
522 |
CLEAR_PENDING_EXCEPTION; |
|
523 |
CURRENT_THREAD_ENV->record_out_of_memory_failure(); |
|
524 |
return ciEnv::_unloaded_ciobjarrayklass; |
|
525 |
} |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
526 |
int dimension = fd.dimension(); |
1 | 527 |
assert(element_type != T_ARRAY, "unsuccessful decomposition"); |
528 |
ciKlass* element_klass = NULL; |
|
529 |
if (element_type == T_OBJECT) { |
|
530 |
ciEnv *env = CURRENT_THREAD_ENV; |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
531 |
ciSymbol* ci_name = env->get_symbol(fd.object_key()); |
1 | 532 |
element_klass = |
533 |
env->get_klass_by_name(accessing_klass, ci_name, false)->as_instance_klass(); |
|
534 |
} else { |
|
535 |
assert(dimension > 1, "one dimensional type arrays are always loaded."); |
|
536 |
||
537 |
// The type array itself takes care of one of the dimensions. |
|
538 |
dimension--; |
|
539 |
||
13952
e3cf184080bc
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
13728
diff
changeset
|
540 |
// The element klass is a TypeArrayKlass. |
1 | 541 |
element_klass = ciTypeArrayKlass::make(element_type); |
542 |
} |
|
543 |
new_klass = new (arena()) ciObjArrayKlass(name, element_klass, dimension); |
|
544 |
} else { |
|
545 |
jobject loader_handle = NULL; |
|
546 |
jobject domain_handle = NULL; |
|
547 |
if (accessing_klass != NULL) { |
|
548 |
loader_handle = accessing_klass->loader_handle(); |
|
549 |
domain_handle = accessing_klass->protection_domain_handle(); |
|
550 |
} |
|
551 |
new_klass = new (arena()) ciInstanceKlass(name, loader_handle, domain_handle); |
|
552 |
} |
|
553 |
init_ident_of(new_klass); |
|
554 |
_unloaded_klasses->append(new_klass); |
|
555 |
||
556 |
return new_klass; |
|
557 |
} |
|
558 |
||
5882 | 559 |
|
560 |
//------------------------------------------------------------------ |
|
561 |
// ciObjectFactory::get_unloaded_instance |
|
562 |
// |
|
563 |
// Get a ciInstance representing an as-yet undetermined instance of a given class. |
|
564 |
// |
|
565 |
ciInstance* ciObjectFactory::get_unloaded_instance(ciInstanceKlass* instance_klass) { |
|
566 |
for (int i=0; i<_unloaded_instances->length(); i++) { |
|
567 |
ciInstance* entry = _unloaded_instances->at(i); |
|
568 |
if (entry->klass()->equals(instance_klass)) { |
|
569 |
// We've found a match. |
|
570 |
return entry; |
|
571 |
} |
|
572 |
} |
|
573 |
||
574 |
// This is a new unloaded instance. Create it and stick it in |
|
575 |
// the cache. |
|
576 |
ciInstance* new_instance = new (arena()) ciInstance(instance_klass); |
|
577 |
||
578 |
init_ident_of(new_instance); |
|
579 |
_unloaded_instances->append(new_instance); |
|
580 |
||
581 |
// make sure it looks the way we want: |
|
582 |
assert(!new_instance->is_loaded(), ""); |
|
583 |
assert(new_instance->klass() == instance_klass, ""); |
|
584 |
||
585 |
return new_instance; |
|
586 |
} |
|
587 |
||
588 |
||
589 |
//------------------------------------------------------------------ |
|
590 |
// ciObjectFactory::get_unloaded_klass_mirror |
|
591 |
// |
|
592 |
// Get a ciInstance representing an unresolved klass mirror. |
|
593 |
// |
|
594 |
// Currently, this ignores the parameters and returns a unique unloaded instance. |
|
595 |
ciInstance* ciObjectFactory::get_unloaded_klass_mirror(ciKlass* type) { |
|
596 |
assert(ciEnv::_Class_klass != NULL, ""); |
|
597 |
return get_unloaded_instance(ciEnv::_Class_klass->as_instance_klass()); |
|
598 |
} |
|
599 |
||
600 |
//------------------------------------------------------------------ |
|
601 |
// ciObjectFactory::get_unloaded_method_handle_constant |
|
602 |
// |
|
603 |
// Get a ciInstance representing an unresolved method handle constant. |
|
604 |
// |
|
605 |
// Currently, this ignores the parameters and returns a unique unloaded instance. |
|
606 |
ciInstance* ciObjectFactory::get_unloaded_method_handle_constant(ciKlass* holder, |
|
607 |
ciSymbol* name, |
|
608 |
ciSymbol* signature, |
|
609 |
int ref_kind) { |
|
610 |
if (ciEnv::_MethodHandle_klass == NULL) return NULL; |
|
611 |
return get_unloaded_instance(ciEnv::_MethodHandle_klass->as_instance_klass()); |
|
612 |
} |
|
613 |
||
614 |
//------------------------------------------------------------------ |
|
615 |
// ciObjectFactory::get_unloaded_method_type_constant |
|
616 |
// |
|
617 |
// Get a ciInstance representing an unresolved method type constant. |
|
618 |
// |
|
619 |
// Currently, this ignores the parameters and returns a unique unloaded instance. |
|
620 |
ciInstance* ciObjectFactory::get_unloaded_method_type_constant(ciSymbol* signature) { |
|
621 |
if (ciEnv::_MethodType_klass == NULL) return NULL; |
|
622 |
return get_unloaded_instance(ciEnv::_MethodType_klass->as_instance_klass()); |
|
623 |
} |
|
624 |
||
19710
2f8ca425504e
7199175: JSR 292: C1 needs patching when invokedynamic/invokehandle call site is not linked
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parents:
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|
625 |
ciInstance* ciObjectFactory::get_unloaded_object_constant() { |
2f8ca425504e
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diff
changeset
|
626 |
if (ciEnv::_Object_klass == NULL) return NULL; |
2f8ca425504e
7199175: JSR 292: C1 needs patching when invokedynamic/invokehandle call site is not linked
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changeset
|
627 |
return get_unloaded_instance(ciEnv::_Object_klass->as_instance_klass()); |
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changeset
|
628 |
} |
5882 | 629 |
|
1 | 630 |
//------------------------------------------------------------------ |
631 |
// ciObjectFactory::get_empty_methodData |
|
632 |
// |
|
633 |
// Get the ciMethodData representing the methodData for a method with |
|
634 |
// none. |
|
635 |
ciMethodData* ciObjectFactory::get_empty_methodData() { |
|
636 |
ciMethodData* new_methodData = new (arena()) ciMethodData(); |
|
637 |
init_ident_of(new_methodData); |
|
638 |
return new_methodData; |
|
639 |
} |
|
640 |
||
641 |
//------------------------------------------------------------------ |
|
642 |
// ciObjectFactory::get_return_address |
|
643 |
// |
|
644 |
// Get a ciReturnAddress for a specified bci. |
|
645 |
ciReturnAddress* ciObjectFactory::get_return_address(int bci) { |
|
646 |
for (int i=0; i<_return_addresses->length(); i++) { |
|
647 |
ciReturnAddress* entry = _return_addresses->at(i); |
|
648 |
if (entry->bci() == bci) { |
|
649 |
// We've found a match. |
|
650 |
return entry; |
|
651 |
} |
|
652 |
} |
|
653 |
||
654 |
ciReturnAddress* new_ret_addr = new (arena()) ciReturnAddress(bci); |
|
655 |
init_ident_of(new_ret_addr); |
|
656 |
_return_addresses->append(new_ret_addr); |
|
657 |
return new_ret_addr; |
|
658 |
} |
|
659 |
||
660 |
// ------------------------------------------------------------------ |
|
661 |
// ciObjectFactory::init_ident_of |
|
13728
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diff
changeset
|
662 |
void ciObjectFactory::init_ident_of(ciBaseObject* obj) { |
1 | 663 |
obj->set_ident(_next_ident++); |
664 |
} |
|
665 |
||
666 |
static ciObjectFactory::NonPermObject* emptyBucket = NULL; |
|
667 |
||
668 |
// ------------------------------------------------------------------ |
|
669 |
// ciObjectFactory::find_non_perm |
|
670 |
// |
|
671 |
// Use a small hash table, hashed on the klass of the key. |
|
672 |
// If there is no entry in the cache corresponding to this oop, return |
|
673 |
// the null tail of the bucket into which the oop should be inserted. |
|
674 |
ciObjectFactory::NonPermObject* &ciObjectFactory::find_non_perm(oop key) { |
|
27644
f4aa22a934e4
8060147: SIGSEGV in Metadata::mark_on_stack() while marking metadata in ciEnv
vlivanov
parents:
25946
diff
changeset
|
675 |
assert(Universe::heap()->is_in_reserved(key), "must be"); |
13728
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diff
changeset
|
676 |
ciMetadata* klass = get_metadata(key->klass()); |
1 | 677 |
NonPermObject* *bp = &_non_perm_bucket[(unsigned) klass->hash() % NON_PERM_BUCKETS]; |
678 |
for (NonPermObject* p; (p = (*bp)) != NULL; bp = &p->next()) { |
|
679 |
if (is_equal(p, key)) break; |
|
680 |
} |
|
681 |
return (*bp); |
|
682 |
} |
|
683 |
||
684 |
||
685 |
||
686 |
// ------------------------------------------------------------------ |
|
687 |
// Code for for NonPermObject |
|
688 |
// |
|
689 |
inline ciObjectFactory::NonPermObject::NonPermObject(ciObjectFactory::NonPermObject* &bucket, oop key, ciObject* object) { |
|
690 |
assert(ciObjectFactory::is_initialized(), ""); |
|
691 |
_object = object; |
|
692 |
_next = bucket; |
|
693 |
bucket = this; |
|
694 |
} |
|
695 |
||
696 |
||
697 |
||
698 |
// ------------------------------------------------------------------ |
|
699 |
// ciObjectFactory::insert_non_perm |
|
700 |
// |
|
701 |
// Insert a ciObject into the non-perm table. |
|
702 |
void ciObjectFactory::insert_non_perm(ciObjectFactory::NonPermObject* &where, oop key, ciObject* obj) { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
703 |
assert(Universe::heap()->is_in_reserved_or_null(key), "must be"); |
1 | 704 |
assert(&where != &emptyBucket, "must not try to fill empty bucket"); |
705 |
NonPermObject* p = new (arena()) NonPermObject(where, key, obj); |
|
706 |
assert(where == p && is_equal(p, key) && p->object() == obj, "entry must match"); |
|
707 |
assert(find_non_perm(key) == p, "must find the same spot"); |
|
708 |
++_non_perm_count; |
|
709 |
} |
|
710 |
||
711 |
// ------------------------------------------------------------------ |
|
712 |
// ciObjectFactory::vm_symbol_at |
|
713 |
// Get the ciSymbol corresponding to some index in vmSymbols. |
|
714 |
ciSymbol* ciObjectFactory::vm_symbol_at(int index) { |
|
715 |
assert(index >= vmSymbols::FIRST_SID && index < vmSymbols::SID_LIMIT, "oob"); |
|
716 |
return _shared_ci_symbols[index]; |
|
717 |
} |
|
718 |
||
719 |
// ------------------------------------------------------------------ |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
720 |
// ciObjectFactory::metadata_do |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
721 |
void ciObjectFactory::metadata_do(void f(Metadata*)) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
722 |
if (_ci_metadata == NULL) return; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
723 |
for (int j = 0; j< _ci_metadata->length(); j++) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
724 |
Metadata* o = _ci_metadata->at(j)->constant_encoding(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
725 |
f(o); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
726 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
727 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
728 |
|
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
729 |
// ------------------------------------------------------------------ |
1 | 730 |
// ciObjectFactory::print_contents_impl |
731 |
void ciObjectFactory::print_contents_impl() { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
732 |
int len = _ci_metadata->length(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
733 |
tty->print_cr("ciObjectFactory (%d) meta data contents:", len); |
1 | 734 |
for (int i=0; i<len; i++) { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
735 |
_ci_metadata->at(i)->print(); |
1 | 736 |
tty->cr(); |
737 |
} |
|
738 |
} |
|
739 |
||
740 |
// ------------------------------------------------------------------ |
|
741 |
// ciObjectFactory::print_contents |
|
742 |
void ciObjectFactory::print_contents() { |
|
743 |
print(); |
|
744 |
tty->cr(); |
|
745 |
GUARDED_VM_ENTRY(print_contents_impl();) |
|
746 |
} |
|
747 |
||
748 |
// ------------------------------------------------------------------ |
|
749 |
// ciObjectFactory::print |
|
750 |
// |
|
751 |
// Print debugging information about the object factory |
|
752 |
void ciObjectFactory::print() { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
753 |
tty->print("<ciObjectFactory oops=%d metadata=%d unloaded_methods=%d unloaded_instances=%d unloaded_klasses=%d>", |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
754 |
_non_perm_count, _ci_metadata->length(), _unloaded_methods->length(), |
5882 | 755 |
_unloaded_instances->length(), |
1 | 756 |
_unloaded_klasses->length()); |
757 |
} |