| /* |
| * Copyright (c) 1999, 2014, 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/ciMethodType.hpp" |
| #include "ci/ciSignature.hpp" |
| #include "ci/ciUtilities.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/signature.hpp" |
| |
| // ciSignature |
| // |
| // This class represents the signature of a method. |
| |
| // ------------------------------------------------------------------ |
| // ciSignature::ciSignature |
| ciSignature::ciSignature(ciKlass* accessing_klass, constantPoolHandle cpool, ciSymbol* symbol) { |
| ASSERT_IN_VM; |
| EXCEPTION_CONTEXT; |
| _accessing_klass = accessing_klass; |
| _symbol = symbol; |
| |
| ciEnv* env = CURRENT_ENV; |
| Arena* arena = env->arena(); |
| _types = new (arena) GrowableArray<ciType*>(arena, 8, 0, NULL); |
| |
| int size = 0; |
| int count = 0; |
| ResourceMark rm(THREAD); |
| Symbol* sh = symbol->get_symbol(); |
| SignatureStream ss(sh); |
| for (; ; ss.next()) { |
| // Process one element of the signature |
| ciType* type; |
| if (!ss.is_object()) { |
| type = ciType::make(ss.type()); |
| } else { |
| Symbol* name = ss.as_symbol(THREAD); |
| if (HAS_PENDING_EXCEPTION) { |
| type = ss.is_array() ? (ciType*)ciEnv::unloaded_ciobjarrayklass() |
| : (ciType*)ciEnv::unloaded_ciinstance_klass(); |
| env->record_out_of_memory_failure(); |
| CLEAR_PENDING_EXCEPTION; |
| } else { |
| ciSymbol* klass_name = env->get_symbol(name); |
| type = env->get_klass_by_name_impl(_accessing_klass, cpool, klass_name, false); |
| } |
| } |
| _types->append(type); |
| if (ss.at_return_type()) { |
| // Done processing the return type; do not add it into the count. |
| break; |
| } |
| size += type->size(); |
| count++; |
| } |
| _size = size; |
| _count = count; |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciSignature::ciSignature |
| ciSignature::ciSignature(ciKlass* accessing_klass, ciSymbol* symbol, ciMethodType* method_type) : |
| _symbol(symbol), |
| _accessing_klass(accessing_klass), |
| _size( method_type->ptype_slot_count()), |
| _count(method_type->ptype_count()) |
| { |
| ASSERT_IN_VM; |
| EXCEPTION_CONTEXT; |
| Arena* arena = CURRENT_ENV->arena(); |
| _types = new (arena) GrowableArray<ciType*>(arena, _count + 1, 0, NULL); |
| for (int i = 0; i < _count; i++) { |
| _types->append(method_type->ptype_at(i)); |
| } |
| _types->append(method_type->rtype()); |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciSignature::return_type |
| // |
| // What is the return type of this signature? |
| ciType* ciSignature::return_type() const { |
| return _types->at(_count); |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciSignature::type_at |
| // |
| // What is the type of the index'th element of this |
| // signature? |
| ciType* ciSignature::type_at(int index) const { |
| assert(index < _count, "out of bounds"); |
| // The first _klasses element holds the return klass. |
| return _types->at(index); |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciSignature::equals |
| // |
| // Compare this signature to another one. Signatures with different |
| // accessing classes but with signature-types resolved to the same |
| // types are defined to be equal. |
| bool ciSignature::equals(ciSignature* that) { |
| // Compare signature |
| if (!this->as_symbol()->equals(that->as_symbol())) return false; |
| // Compare all types of the arguments |
| for (int i = 0; i < _count; i++) { |
| if (this->type_at(i) != that->type_at(i)) return false; |
| } |
| // Compare the return type |
| if (this->return_type() != that->return_type()) return false; |
| return true; |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciSignature::print_signature |
| void ciSignature::print_signature() { |
| _symbol->print_symbol(); |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciSignature::print |
| void ciSignature::print() { |
| tty->print("<ciSignature symbol="); |
| print_signature(); |
| tty->print(" accessing_klass="); |
| _accessing_klass->print(); |
| tty->print(" address=" INTPTR_FORMAT ">", p2i((address)this)); |
| } |