1 /*
2 * Copyright (c) 1999, 2012, 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 "precompiled.hpp"
26 #include "ci/ciSymbol.hpp"
27 #include "ci/ciUtilities.hpp"
28 #include "memory/oopFactory.hpp"
29
30 // ------------------------------------------------------------------
31 // ciSymbol::ciSymbol
32 //
33 // Preallocated symbol variant. Used with symbols from vmSymbols.
34 ciSymbol::ciSymbol(Symbol* s, vmSymbols::SID sid)
35 : _symbol(s), _sid(sid)
36 {
37 assert(_symbol != NULL, "adding null symbol");
38 _symbol->increment_refcount(); // increment ref count
39 assert(sid_ok(), "must be in vmSymbols");
40 }
41
42 // Normal case for non-famous symbols.
43 ciSymbol::ciSymbol(Symbol* s)
44 : _symbol(s), _sid(vmSymbols::NO_SID)
45 {
46 assert(_symbol != NULL, "adding null symbol");
47 _symbol->increment_refcount(); // increment ref count
48 assert(sid_ok(), "must not be in vmSymbols");
49 }
50
51 // ciSymbol
52 //
53 // This class represents a Symbol* in the HotSpot virtual
54 // machine.
55
56 // ------------------------------------------------------------------
57 // ciSymbol::as_utf8
58 //
59 // The text of the symbol as a null-terminated C string.
60 const char* ciSymbol::as_utf8() {
61 GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_utf8();)
62 }
63
64 // The text of the symbol as a null-terminated C string.
65 const char* ciSymbol::as_quoted_ascii() {
66 GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_quoted_ascii();)
67 }
68
69 // ------------------------------------------------------------------
70 // ciSymbol::base
71 const jbyte* ciSymbol::base() {
72 GUARDED_VM_ENTRY(return get_symbol()->base();)
73 }
74
75 // ------------------------------------------------------------------
76 // ciSymbol::byte_at
77 int ciSymbol::byte_at(int i) {
78 GUARDED_VM_ENTRY(return get_symbol()->byte_at(i);)
79 }
80
81 // ------------------------------------------------------------------
82 // ciSymbol::starts_with
83 //
84 // Tests if the symbol starts with the given prefix.
85 bool ciSymbol::starts_with(const char* prefix, int len) const {
86 GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);)
87 }
88
89 bool ciSymbol::is_signature_polymorphic_name() const {
90 GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());)
91 }
92
93 // ------------------------------------------------------------------
94 // ciSymbol::index_of
95 //
96 // Determines where the symbol contains the given substring.
97 int ciSymbol::index_of_at(int i, const char* str, int len) const {
98 GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);)
99 }
100
101 // ------------------------------------------------------------------
102 // ciSymbol::utf8_length
103 int ciSymbol::utf8_length() {
104 GUARDED_VM_ENTRY(return get_symbol()->utf8_length();)
105 }
106
107 // ------------------------------------------------------------------
108 // ciSymbol::print_impl
109 //
110 // Implementation of the print method
111 void ciSymbol::print_impl(outputStream* st) {
112 st->print(" value=");
113 print_symbol_on(st);
114 }
115
116 // ------------------------------------------------------------------
117 // ciSymbol::print_symbol_on
118 //
119 // Print the value of this symbol on an outputStream
120 void ciSymbol::print_symbol_on(outputStream *st) {
121 GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);)
122 }
123
124 const char* ciSymbol::as_klass_external_name() const {
125 GUARDED_VM_ENTRY(return get_symbol()->as_klass_external_name(););
126 }
127
128 // ------------------------------------------------------------------
129 // ciSymbol::make_impl
130 //
131 // Make a ciSymbol from a C string (implementation).
132 ciSymbol* ciSymbol::make_impl(const char* s) {
133 EXCEPTION_CONTEXT;
134 TempNewSymbol sym = SymbolTable::new_symbol(s, THREAD);
135 if (HAS_PENDING_EXCEPTION) {
136 CLEAR_PENDING_EXCEPTION;
137 CURRENT_THREAD_ENV->record_out_of_memory_failure();
138 return ciEnv::_unloaded_cisymbol;
139 }
140 return CURRENT_THREAD_ENV->get_symbol(sym);
141 }
142
143 // ------------------------------------------------------------------
144 // ciSymbol::make
145 //
146 // Make a ciSymbol from a C string.
147 ciSymbol* ciSymbol::make(const char* s) {
148 GUARDED_VM_ENTRY(return make_impl(s);)
149 }