author | thartmann |
Thu, 28 Jan 2016 09:49:17 +0100 | |
changeset 35606 | d873b64009cc |
parent 33611 | 9abd65805e19 |
child 37248 | 11a660dbbb8e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2015, 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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||
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#include "precompiled.hpp" |
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#include "ci/ciEnv.hpp" |
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#include "ci/ciType.hpp" |
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#include "ci/ciUtilities.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "oops/oop.inline.hpp" |
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ciType* ciType::_basic_types[T_CONFLICT+1]; |
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// ciType |
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// |
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// This class represents either a class (T_OBJECT), array (T_ARRAY), |
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// or one of the primitive types such as T_INT. |
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// ------------------------------------------------------------------ |
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// ciType::ciType |
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// |
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ciType::ciType(BasicType basic_type) : ciMetadata() { |
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assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check"); |
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_basic_type = basic_type; |
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} |
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ciType::ciType(KlassHandle k) : ciMetadata(k()) { |
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_basic_type = k()->is_array_klass() ? T_ARRAY : T_OBJECT; |
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} |
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// ------------------------------------------------------------------ |
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// ciType::is_subtype_of |
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// |
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bool ciType::is_subtype_of(ciType* type) { |
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if (this == type) return true; |
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if (is_klass() && type->is_klass()) |
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return this->as_klass()->is_subtype_of(type->as_klass()); |
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return false; |
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} |
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// ------------------------------------------------------------------ |
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// ciType::name |
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// |
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// Return the name of this type |
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const char* ciType::name() { |
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if (is_primitive_type()) { |
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return type2name(basic_type()); |
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} else { |
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assert(is_klass(), "must be"); |
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return as_klass()->name()->as_utf8(); |
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} |
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} |
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// ------------------------------------------------------------------ |
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// ciType::print_impl |
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// |
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// Implementation of the print method. |
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void ciType::print_impl(outputStream* st) { |
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st->print(" type="); |
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print_name_on(st); |
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} |
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// ------------------------------------------------------------------ |
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// ciType::print_name |
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// |
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// Print the name of this type |
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void ciType::print_name_on(outputStream* st) { |
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ResourceMark rm; |
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st->print("%s", name()); |
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} |
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// ------------------------------------------------------------------ |
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// ciType::java_mirror |
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// |
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ciInstance* ciType::java_mirror() { |
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VM_ENTRY_MARK; |
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return CURRENT_THREAD_ENV->get_instance(Universe::java_mirror(basic_type())); |
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} |
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// ------------------------------------------------------------------ |
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// ciType::box_klass |
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// |
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ciKlass* ciType::box_klass() { |
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if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing" |
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// Void is "boxed" with a null. |
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if (basic_type() == T_VOID) return NULL; |
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VM_ENTRY_MARK; |
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return CURRENT_THREAD_ENV->get_instance_klass(SystemDictionary::box_klass(basic_type())); |
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} |
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// ------------------------------------------------------------------ |
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// ciType::make |
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// |
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// Produce the ciType for a given primitive BasicType. |
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// As a bonus, produce the right reference type for T_OBJECT. |
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// Does not work on T_ARRAY. |
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ciType* ciType::make(BasicType t) { |
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// short, etc. |
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// Note: Bare T_ADDRESS means a raw pointer type, not a return_address. |
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assert((uint)t < T_CONFLICT+1, "range check"); |
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if (t == T_OBJECT) return ciEnv::_Object_klass; // java/lang/Object |
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assert(_basic_types[t] != NULL, "domain check"); |
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return _basic_types[t]; |
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} |
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// ciReturnAddress |
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// |
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// This class represents the type of a specific return address in the |
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// bytecodes. |
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// ------------------------------------------------------------------ |
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// ciReturnAddress::ciReturnAddress |
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// |
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ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) { |
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assert(0 <= bci, "bci cannot be negative"); |
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_bci = bci; |
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} |
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// ------------------------------------------------------------------ |
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// ciReturnAddress::print_impl |
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// |
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// Implementation of the print method. |
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void ciReturnAddress::print_impl(outputStream* st) { |
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st->print(" bci=%d", _bci); |
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} |
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// ------------------------------------------------------------------ |
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// ciReturnAddress::make |
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ciReturnAddress* ciReturnAddress::make(int bci) { |
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GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);) |
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} |