1 /* 2 * Copyright (c) 1999, 2019, 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.inline.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 u1* ciSymbol::base() { 72 GUARDED_VM_ENTRY(return get_symbol()->base();) 73 } 74 75 // ------------------------------------------------------------------ 76 // ciSymbol::char_at 77 char ciSymbol::char_at(int i) { 78 GUARDED_VM_ENTRY(return get_symbol()->char_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 bool ciSymbol::starts_with(char prefix_char) const { 89 GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix_char);) 90 } 91 92 // ------------------------------------------------------------------ 93 // ciSymbol::ends_with 94 // 95 // Tests if the symbol ends with the given suffix. 96 bool ciSymbol::ends_with(const char* suffix, int len) const { 97 GUARDED_VM_ENTRY(return get_symbol()->ends_with(suffix, len);) 98 } 99 bool ciSymbol::ends_with(char suffix_char) const { 100 GUARDED_VM_ENTRY(return get_symbol()->ends_with(suffix_char);) 101 } 102 103 bool ciSymbol::is_signature_polymorphic_name() const { 104 GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());) 105 } 106 107 // ------------------------------------------------------------------ 108 // ciSymbol::index_of 109 // 110 // Determines where the symbol contains the given substring. 111 int ciSymbol::index_of_at(int i, const char* str, int len) const { 112 GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);) 113 } 114 115 // ------------------------------------------------------------------ 116 // ciSymbol::utf8_length 117 int ciSymbol::utf8_length() { 118 GUARDED_VM_ENTRY(return get_symbol()->utf8_length();) 119 } 120 121 // ------------------------------------------------------------------ 122 // ciSymbol::is_Q_signature 123 bool ciSymbol::is_Q_signature() { 124 GUARDED_VM_ENTRY(return get_symbol()->is_Q_signature();) 125 } 126 127 // ------------------------------------------------------------------ 128 // ciSymbol::print_impl 129 // 130 // Implementation of the print method 131 void ciSymbol::print_impl(outputStream* st) { 132 st->print(" value="); 133 print_symbol_on(st); 134 } 135 136 // ------------------------------------------------------------------ 137 // ciSymbol::print_symbol_on 138 // 139 // Print the value of this symbol on an outputStream 140 void ciSymbol::print_symbol_on(outputStream *st) { 141 GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);) 142 } 143 144 const char* ciSymbol::as_klass_external_name() const { 145 GUARDED_VM_ENTRY(return get_symbol()->as_klass_external_name();); 146 } 147 148 // ------------------------------------------------------------------ 149 // ciSymbol::make_impl 150 // 151 // Make a ciSymbol from a C string (implementation). 152 ciSymbol* ciSymbol::make_impl(const char* s) { 153 EXCEPTION_CONTEXT; 154 TempNewSymbol sym = SymbolTable::new_symbol(s, THREAD); 155 if (HAS_PENDING_EXCEPTION) { 156 CLEAR_PENDING_EXCEPTION; 157 CURRENT_THREAD_ENV->record_out_of_memory_failure(); 158 return ciEnv::_unloaded_cisymbol; 159 } 160 return CURRENT_THREAD_ENV->get_symbol(sym); 161 } 162 163 // ------------------------------------------------------------------ 164 // ciSymbol::make 165 // 166 // Make a ciSymbol from a C string. 167 ciSymbol* ciSymbol::make(const char* s) { 168 GUARDED_VM_ENTRY(return make_impl(s);) 169 }