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 VM_QUICK_ENTRY_MARK;
62 Symbol* s = get_symbol();
63 return s->as_utf8();
64 }
65
66 // The text of the symbol as a null-terminated C string.
67 const char* ciSymbol::as_quoted_ascii() {
68 GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_quoted_ascii();)
69 }
70
71 // ------------------------------------------------------------------
72 // ciSymbol::base
73 const jbyte* ciSymbol::base() {
74 GUARDED_VM_ENTRY(return get_symbol()->base();)
75 }
76
77 // ------------------------------------------------------------------
78 // ciSymbol::byte_at
79 int ciSymbol::byte_at(int i) {
80 GUARDED_VM_ENTRY(return get_symbol()->byte_at(i);)
81 }
82
83 // ------------------------------------------------------------------
84 // ciSymbol::starts_with
85 //
86 // Tests if the symbol starts with the given prefix.
87 bool ciSymbol::starts_with(const char* prefix, int len) const {
88 GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);)
89 }
90
91 bool ciSymbol::is_signature_polymorphic_name() const {
92 GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());)
93 }
94
95 // ------------------------------------------------------------------
96 // ciSymbol::index_of
97 //
98 // Determines where the symbol contains the given substring.
99 int ciSymbol::index_of_at(int i, const char* str, int len) const {
100 GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);)
101 }
102
103 // ------------------------------------------------------------------
104 // ciSymbol::utf8_length
105 int ciSymbol::utf8_length() {
106 GUARDED_VM_ENTRY(return get_symbol()->utf8_length();)
107 }
108
109 // ------------------------------------------------------------------
110 // ciSymbol::print_impl
111 //
112 // Implementation of the print method
113 void ciSymbol::print_impl(outputStream* st) {
114 st->print(" value=");
115 print_symbol_on(st);
116 }
117
118 // ------------------------------------------------------------------
119 // ciSymbol::print_symbol_on
120 //
121 // Print the value of this symbol on an outputStream
122 void ciSymbol::print_symbol_on(outputStream *st) {
123 GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);)
124 }
125
126 const char* ciSymbol::as_klass_external_name() const {
127 GUARDED_VM_ENTRY(return get_symbol()->as_klass_external_name(););
128 }
129
130 // ------------------------------------------------------------------
131 // ciSymbol::make_impl
132 //
133 // Make a ciSymbol from a C string (implementation).
134 ciSymbol* ciSymbol::make_impl(const char* s) {
135 EXCEPTION_CONTEXT;
136 TempNewSymbol sym = SymbolTable::new_symbol(s, THREAD);
137 if (HAS_PENDING_EXCEPTION) {
138 CLEAR_PENDING_EXCEPTION;
139 CURRENT_THREAD_ENV->record_out_of_memory_failure();
140 return ciEnv::_unloaded_cisymbol;
141 }
142 return CURRENT_THREAD_ENV->get_symbol(sym);
143 }
144
145 // ------------------------------------------------------------------
146 // ciSymbol::make
147 //
148 // Make a ciSymbol from a C string.
149 ciSymbol* ciSymbol::make(const char* s) {
150 GUARDED_VM_ENTRY(return make_impl(s);)
151 }