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comparison src/share/vm/ci/ciSignature.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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
34 ciSignature::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?
81 ciType* 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?
90 ciType* 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
98 void ciSignature::print_signature() {
99 _symbol->print_symbol();
100 }
101
102 // ------------------------------------------------------------------
103 // ciSignature::print
104 void 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 }