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annotate src/share/vm/ci/ciSymbol.cpp @ 1507:cd5dbf694d45

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6939134: JSR 292 adjustments to method handle invocation Summary: split MethodHandle.invoke into invokeExact and invokeGeneric; also clean up JVM-to-Java interfaces Reviewed-by: twisti
author jrose
date Sat, 01 May 2010 02:42:18 -0700
parents dd57230ba8fe
children c18cbe5936b8
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1 /*
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2 * Copyright 1999-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_ciSymbol.cpp.incl"
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27
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28 // ------------------------------------------------------------------
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29 // ciSymbol::ciSymbol
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30 //
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31 // Preallocated handle variant. Used with handles from vmSymboHandles.
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32 ciSymbol::ciSymbol(symbolHandle h_s, vmSymbols::SID sid)
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33 : ciObject(h_s), _sid(sid)
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34 {
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35 assert(sid_ok(), "must be in vmSymbols");
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36 }
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37
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38 // Normal case for non-famous symbols.
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39 ciSymbol::ciSymbol(symbolOop s)
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40 : ciObject(s), _sid(vmSymbols::NO_SID)
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41 {
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42 assert(sid_ok(), "must not be in vmSymbols");
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43 }
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44
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45 // ciSymbol
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46 //
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47 // This class represents a symbolOop in the HotSpot virtual
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48 // machine.
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49
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50 // ------------------------------------------------------------------
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51 // ciSymbol::as_utf8
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52 //
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53 // The text of the symbol as a null-terminated C string.
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54 const char* ciSymbol::as_utf8() {
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55 VM_QUICK_ENTRY_MARK;
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56 symbolOop s = get_symbolOop();
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57 return s->as_utf8();
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58 }
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59
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60 // ------------------------------------------------------------------
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61 // ciSymbol::base
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62 jbyte* ciSymbol::base() {
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63 GUARDED_VM_ENTRY(return get_symbolOop()->base();)
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64 }
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65
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66 // ------------------------------------------------------------------
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67 // ciSymbol::byte_at
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68 int ciSymbol::byte_at(int i) {
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69 GUARDED_VM_ENTRY(return get_symbolOop()->byte_at(i);)
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70 }
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71
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72 // ------------------------------------------------------------------
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73 // ciSymbol::starts_with
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74 //
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75 // Tests if the symbol starts with the given prefix.
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76 bool ciSymbol::starts_with(const char* prefix, int len) const {
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77 GUARDED_VM_ENTRY(return get_symbolOop()->starts_with(prefix, len);)
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78 }
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79
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80 // ------------------------------------------------------------------
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81 // ciSymbol::index_of
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82 //
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83 // Determines where the symbol contains the given substring.
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84 int ciSymbol::index_of_at(int i, const char* str, int len) const {
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85 GUARDED_VM_ENTRY(return get_symbolOop()->index_of_at(i, str, len);)
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86 }
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87
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88 // ------------------------------------------------------------------
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89 // ciSymbol::utf8_length
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90 int ciSymbol::utf8_length() {
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91 GUARDED_VM_ENTRY(return get_symbolOop()->utf8_length();)
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92 }
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93
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94 // ------------------------------------------------------------------
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95 // ciSymbol::print_impl
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96 //
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97 // Implementation of the print method
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98 void ciSymbol::print_impl(outputStream* st) {
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99 st->print(" value=");
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100 print_symbol_on(st);
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101 }
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102
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103 // ------------------------------------------------------------------
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104 // ciSymbol::print_symbol_on
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105 //
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106 // Print the value of this symbol on an outputStream
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107 void ciSymbol::print_symbol_on(outputStream *st) {
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108 GUARDED_VM_ENTRY(get_symbolOop()->print_symbol_on(st);)
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109 }
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110
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111 // ------------------------------------------------------------------
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112 // ciSymbol::make_impl
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113 //
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114 // Make a ciSymbol from a C string (implementation).
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115 ciSymbol* ciSymbol::make_impl(const char* s) {
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116 EXCEPTION_CONTEXT;
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117 // For some reason, oopFactory::new_symbol doesn't declare its
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118 // char* argument as const.
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119 symbolOop sym = oopFactory::new_symbol((char*)s, (int)strlen(s), THREAD);
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120 if (HAS_PENDING_EXCEPTION) {
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121 CLEAR_PENDING_EXCEPTION;
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122 CURRENT_THREAD_ENV->record_out_of_memory_failure();
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123 return ciEnv::_unloaded_cisymbol;
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124 }
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125 return CURRENT_THREAD_ENV->get_object(sym)->as_symbol();
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126 }
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127
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128 // ------------------------------------------------------------------
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129 // ciSymbol::make
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130 //
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131 // Make a ciSymbol from a C string.
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132 ciSymbol* ciSymbol::make(const char* s) {
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133 GUARDED_VM_ENTRY(return make_impl(s);)
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134 }