ciSignature.cpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "incls/_precompiled.incl" 26#include "incls/_ciSignature.cpp.incl" 27 28// ciSignature 29// 30// This class represents the signature of a method. 31 32// ------------------------------------------------------------------ 33// ciSignature::ciSignature 34ciSignature::ciSignature(ciKlass* accessing_klass, ciSymbol* symbol) { 35 ASSERT_IN_VM; 36 EXCEPTION_CONTEXT; 37 _accessing_klass = accessing_klass; 38 _symbol = symbol; 39 40 ciEnv* env = CURRENT_ENV; 41 Arena* arena = env->arena(); 42 _types = new (arena) GrowableArray<ciType*>(arena, 8, 0, NULL); 43 44 int size = 0; 45 int count = 0; 46 symbolHandle sh (THREAD, symbol->get_symbolOop()); 47 SignatureStream ss(sh); 48 for (; ; ss.next()) { 49 // Process one element of the signature 50 ciType* type; 51 if (!ss.is_object()) { 52 type = ciType::make(ss.type()); 53 } else { 54 symbolOop name = ss.as_symbol(THREAD); 55 if (HAS_PENDING_EXCEPTION) { 56 type = ss.is_array() ? (ciType*)ciEnv::unloaded_ciobjarrayklass() 57 : (ciType*)ciEnv::unloaded_ciinstance_klass(); 58 env->record_out_of_memory_failure(); 59 CLEAR_PENDING_EXCEPTION; 60 } else { 61 ciSymbol* klass_name = env->get_object(name)->as_symbol(); 62 type = env->get_klass_by_name_impl(_accessing_klass, klass_name, false); 63 } 64 } 65 _types->append(type); 66 if (ss.at_return_type()) { 67 // Done processing the return type; do not add it into the count. 68 break; 69 } 70 size += type->size(); 71 count++; 72 } 73 _size = size; 74 _count = count; 75} 76 77// ------------------------------------------------------------------ 78// ciSignature::return_ciType 79// 80// What is the return type of this signature? 81ciType* ciSignature::return_type() const { 82 return _types->at(_count); 83} 84 85// ------------------------------------------------------------------ 86// ciSignature::ciType_at 87// 88// What is the type of the index'th element of this 89// signature? 90ciType* ciSignature::type_at(int index) const { 91 assert(index < _count, "out of bounds"); 92 // The first _klasses element holds the return klass. 93 return _types->at(index); 94} 95 96// ------------------------------------------------------------------ 97// ciSignature::print_signature 98void ciSignature::print_signature() { 99 _symbol->print_symbol(); 100} 101 102// ------------------------------------------------------------------ 103// ciSignature::print 104void ciSignature::print() { 105 tty->print("<ciSignature symbol="); 106 print_signature(); 107 tty->print(" accessing_klass="); 108 _accessing_klass->print(); 109 tty->print(" address=0x%x>", (address)this); 110} 111