jdk

1
/*
2
 * Copyright (c) 1999, 2023, 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/ciSymbols.hpp"
28
#include "ci/ciUtilities.inline.hpp"
29
#include "classfile/symbolTable.hpp"
30
#include "classfile/vmSymbols.hpp"
31
#include "memory/oopFactory.hpp"
32
#include "prims/methodHandles.hpp"
33

34
// ------------------------------------------------------------------
35
// ciSymbol::ciSymbol
36
ciSymbol::ciSymbol(Symbol* s, vmSymbolID sid)
37
  : _symbol(s), _sid(sid)
38
{
39
  assert(_symbol != nullptr, "adding null symbol");
40
  _symbol->increment_refcount();  // increment ref count
41
  assert(sid_ok(), "sid must be consistent with vmSymbols");
42
}
43

44
DEBUG_ONLY(bool ciSymbol::sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; })
45

46
// ciSymbol
47
//
48
// This class represents a Symbol* in the HotSpot virtual
49
// machine.
50

51
// ------------------------------------------------------------------
52
// ciSymbol::as_utf8
53
//
54
// The text of the symbol as a null-terminated C string.
55
const char* ciSymbol::as_utf8() {
56
  GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_utf8();)
57
}
58

59
// The text of the symbol as a null-terminated C string.
60
const char* ciSymbol::as_quoted_ascii() {
61
  GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_quoted_ascii();)
62
}
63

64
// ------------------------------------------------------------------
65
// ciSymbol::base
66
const u1* ciSymbol::base() {
67
  GUARDED_VM_ENTRY(return get_symbol()->base();)
68
}
69

70
// ------------------------------------------------------------------
71
// ciSymbol::char_at
72
char ciSymbol::char_at(int i) {
73
  GUARDED_VM_ENTRY(return get_symbol()->char_at(i);)
74
}
75

76
// ------------------------------------------------------------------
77
// ciSymbol::starts_with
78
//
79
// Tests if the symbol starts with the given prefix.
80
bool ciSymbol::starts_with(const char* prefix, int len) const {
81
  GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);)
82
}
83

84
bool ciSymbol::is_signature_polymorphic_name()  const {
85
  GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());)
86
}
87

88
// ------------------------------------------------------------------
89
// ciSymbol::index_of
90
//
91
// Determines where the symbol contains the given substring.
92
int ciSymbol::index_of_at(int i, const char* str, int len) const {
93
  GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);)
94
}
95

96
// ------------------------------------------------------------------
97
// ciSymbol::utf8_length
98
int ciSymbol::utf8_length() {
99
  GUARDED_VM_ENTRY(return get_symbol()->utf8_length();)
100
}
101

102
// ------------------------------------------------------------------
103
// ciSymbol::print_impl
104
//
105
// Implementation of the print method
106
void ciSymbol::print_impl(outputStream* st) {
107
  st->print(" value=");
108
  print_symbol_on(st);
109
}
110

111
// ------------------------------------------------------------------
112
// ciSymbol::print_symbol_on
113
//
114
// Print the value of this symbol on an outputStream
115
void ciSymbol::print_symbol_on(outputStream *st) {
116
  GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);)
117
}
118

119
const char* ciSymbol::as_klass_external_name() const {
120
  GUARDED_VM_ENTRY(return get_symbol()->as_klass_external_name(););
121
}
122

123
// ------------------------------------------------------------------
124
// ciSymbol::make_impl
125
//
126
// Make a ciSymbol from a C string (implementation).
127
ciSymbol* ciSymbol::make_impl(const char* s) {
128
  EXCEPTION_CONTEXT;
129
  TempNewSymbol sym = SymbolTable::new_symbol(s);
130
  return CURRENT_THREAD_ENV->get_symbol(sym);
131
}
132

133
// ------------------------------------------------------------------
134
// ciSymbol::make
135
//
136
// Make a ciSymbol from a C string.
137
ciSymbol* ciSymbol::make(const char* s) {
138
  GUARDED_VM_ENTRY(return make_impl(s);)
139
}
140