Mercurial > hg > truffle
view src/share/vm/ci/ciSignature.cpp @ 14131:2c538e48bb1a
Fix bug in OSR compilation.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Tue, 11 Mar 2014 17:21:55 +0100 |
parents | f6b0eb4e44cf |
children | 78bbf4d43a14 |
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/* * Copyright (c) 1999, 2011, 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=0x%x>", (address)this); }