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annotate src/share/vm/ci/ciSymbol.cpp @ 3938:e6b1331a51d2

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7086585: make Java field injection more flexible Reviewed-by: jrose, twisti, kvn, coleenp
author never
date Sat, 10 Sep 2011 17:29:02 -0700
parents 1d1603768966
children 1d7922586cf6
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1 /*
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2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "ci/ciSymbol.hpp"
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27 #include "ci/ciUtilities.hpp"
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28 #include "memory/oopFactory.hpp"
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30 // ------------------------------------------------------------------
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31 // ciSymbol::ciSymbol
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32 //
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33 // Preallocated symbol variant. Used with symbols from vmSymbols.
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34 ciSymbol::ciSymbol(Symbol* s, vmSymbols::SID sid)
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35 : _symbol(s), _sid(sid)
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36 {
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37 assert(_symbol != NULL, "adding null symbol");
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38 _symbol->increment_refcount(); // increment ref count
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39 assert(sid_ok(), "must be in vmSymbols");
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40 }
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41
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42 // Normal case for non-famous symbols.
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43 ciSymbol::ciSymbol(Symbol* s)
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44 : _symbol(s), _sid(vmSymbols::NO_SID)
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45 {
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46 assert(_symbol != NULL, "adding null symbol");
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47 _symbol->increment_refcount(); // increment ref count
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48 assert(sid_ok(), "must not be in vmSymbols");
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49 }
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50
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51 // ciSymbol
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52 //
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53 // This class represents a Symbol* in the HotSpot virtual
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54 // machine.
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55
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56 // ------------------------------------------------------------------
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57 // ciSymbol::as_utf8
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58 //
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59 // The text of the symbol as a null-terminated C string.
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60 const char* ciSymbol::as_utf8() {
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61 VM_QUICK_ENTRY_MARK;
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62 Symbol* s = get_symbol();
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63 return s->as_utf8();
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64 }
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65
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66 // ------------------------------------------------------------------
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67 // ciSymbol::base
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68 const jbyte* ciSymbol::base() {
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69 GUARDED_VM_ENTRY(return get_symbol()->base();)
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70 }
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71
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72 // ------------------------------------------------------------------
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73 // ciSymbol::byte_at
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74 int ciSymbol::byte_at(int i) {
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75 GUARDED_VM_ENTRY(return get_symbol()->byte_at(i);)
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76 }
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77
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78 // ------------------------------------------------------------------
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79 // ciSymbol::starts_with
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80 //
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81 // Tests if the symbol starts with the given prefix.
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82 bool ciSymbol::starts_with(const char* prefix, int len) const {
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83 GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);)
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84 }
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85
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86 // ------------------------------------------------------------------
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87 // ciSymbol::index_of
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88 //
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89 // Determines where the symbol contains the given substring.
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90 int ciSymbol::index_of_at(int i, const char* str, int len) const {
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91 GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);)
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92 }
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93
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94 // ------------------------------------------------------------------
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95 // ciSymbol::utf8_length
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96 int ciSymbol::utf8_length() {
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97 GUARDED_VM_ENTRY(return get_symbol()->utf8_length();)
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98 }
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99
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100 // ------------------------------------------------------------------
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101 // ciSymbol::print_impl
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102 //
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103 // Implementation of the print method
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104 void ciSymbol::print_impl(outputStream* st) {
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105 st->print(" value=");
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106 print_symbol_on(st);
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107 }
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108
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109 // ------------------------------------------------------------------
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110 // ciSymbol::print_symbol_on
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111 //
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112 // Print the value of this symbol on an outputStream
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113 void ciSymbol::print_symbol_on(outputStream *st) {
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114 GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);)
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115 }
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116
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117 // ------------------------------------------------------------------
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118 // ciSymbol::make_impl
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119 //
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120 // Make a ciSymbol from a C string (implementation).
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121 ciSymbol* ciSymbol::make_impl(const char* s) {
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122 EXCEPTION_CONTEXT;
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123 TempNewSymbol sym = SymbolTable::new_symbol(s, THREAD);
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124 if (HAS_PENDING_EXCEPTION) {
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125 CLEAR_PENDING_EXCEPTION;
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126 CURRENT_THREAD_ENV->record_out_of_memory_failure();
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127 return ciEnv::_unloaded_cisymbol;
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128 }
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129 return CURRENT_THREAD_ENV->get_symbol(sym);
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130 }
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131
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132 // ------------------------------------------------------------------
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133 // ciSymbol::make
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134 //
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135 // Make a ciSymbol from a C string.
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136 ciSymbol* ciSymbol::make(const char* s) {
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137 GUARDED_VM_ENTRY(return make_impl(s);)
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138 }