Mercurial > hg > truffle
annotate src/share/vm/ci/ciSignature.cpp @ 4530:6c6cb7be1324
bugfix
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Wed, 08 Feb 2012 21:13:35 -0800 |
parents | 5eb9169b1a14 |
children | f6b0eb4e44cf |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "ci/ciSignature.hpp" | |
27 #include "ci/ciUtilities.hpp" | |
28 #include "memory/allocation.inline.hpp" | |
29 #include "oops/oop.inline.hpp" | |
30 #include "runtime/signature.hpp" | |
0 | 31 |
32 // ciSignature | |
33 // | |
34 // This class represents the signature of a method. | |
35 | |
36 // ------------------------------------------------------------------ | |
37 // ciSignature::ciSignature | |
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38 ciSignature::ciSignature(ciKlass* accessing_klass, constantPoolHandle cpool, ciSymbol* symbol) { |
0 | 39 ASSERT_IN_VM; |
40 EXCEPTION_CONTEXT; | |
41 _accessing_klass = accessing_klass; | |
42 _symbol = symbol; | |
43 | |
44 ciEnv* env = CURRENT_ENV; | |
45 Arena* arena = env->arena(); | |
46 _types = new (arena) GrowableArray<ciType*>(arena, 8, 0, NULL); | |
47 | |
48 int size = 0; | |
49 int count = 0; | |
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50 ResourceMark rm(THREAD); |
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51 Symbol* sh = symbol->get_symbol(); |
0 | 52 SignatureStream ss(sh); |
53 for (; ; ss.next()) { | |
54 // Process one element of the signature | |
55 ciType* type; | |
56 if (!ss.is_object()) { | |
57 type = ciType::make(ss.type()); | |
58 } else { | |
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59 Symbol* name = ss.as_symbol(THREAD); |
0 | 60 if (HAS_PENDING_EXCEPTION) { |
61 type = ss.is_array() ? (ciType*)ciEnv::unloaded_ciobjarrayklass() | |
62 : (ciType*)ciEnv::unloaded_ciinstance_klass(); | |
63 env->record_out_of_memory_failure(); | |
64 CLEAR_PENDING_EXCEPTION; | |
65 } else { | |
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66 ciSymbol* klass_name = env->get_symbol(name); |
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67 type = env->get_klass_by_name_impl(_accessing_klass, cpool, klass_name, false); |
0 | 68 } |
69 } | |
70 _types->append(type); | |
71 if (ss.at_return_type()) { | |
72 // Done processing the return type; do not add it into the count. | |
73 break; | |
74 } | |
75 size += type->size(); | |
76 count++; | |
77 } | |
78 _size = size; | |
79 _count = count; | |
80 } | |
81 | |
82 // ------------------------------------------------------------------ | |
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83 // ciSignature::return_type |
0 | 84 // |
85 // What is the return type of this signature? | |
86 ciType* ciSignature::return_type() const { | |
87 return _types->at(_count); | |
88 } | |
89 | |
90 // ------------------------------------------------------------------ | |
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91 // ciSignature::type_at |
0 | 92 // |
93 // What is the type of the index'th element of this | |
94 // signature? | |
95 ciType* ciSignature::type_at(int index) const { | |
96 assert(index < _count, "out of bounds"); | |
97 // The first _klasses element holds the return klass. | |
98 return _types->at(index); | |
99 } | |
100 | |
101 // ------------------------------------------------------------------ | |
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102 // ciSignature::equals |
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103 // |
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104 // Compare this signature to another one. Signatures with different |
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105 // accessing classes but with signature-types resolved to the same |
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106 // types are defined to be equal. |
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107 bool ciSignature::equals(ciSignature* that) { |
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108 // Compare signature |
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109 if (!this->as_symbol()->equals(that->as_symbol())) return false; |
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110 // Compare all types of the arguments |
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111 for (int i = 0; i < _count; i++) { |
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112 if (this->type_at(i) != that->type_at(i)) return false; |
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113 } |
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114 // Compare the return type |
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115 if (this->return_type() != that->return_type()) return false; |
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116 return true; |
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117 } |
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118 |
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119 // ------------------------------------------------------------------ |
0 | 120 // ciSignature::print_signature |
121 void ciSignature::print_signature() { | |
122 _symbol->print_symbol(); | |
123 } | |
124 | |
125 // ------------------------------------------------------------------ | |
126 // ciSignature::print | |
127 void ciSignature::print() { | |
128 tty->print("<ciSignature symbol="); | |
129 print_signature(); | |
130 tty->print(" accessing_klass="); | |
131 _accessing_klass->print(); | |
132 tty->print(" address=0x%x>", (address)this); | |
133 } |