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src/share/vm/ci/ciSymbol.hpp@eef07cd490d4 (annotated)
src/share/vm/ci/ciSymbol.hpp
Wed, 03 Jul 2019 20:42:37 +0800
- author
- aoqi
- date
- Wed, 03 Jul 2019 20:42:37 +0800
- changeset 9637
- eef07cd490d4
- parent 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_CI_CISYMBOL_HPP |
| aoqi@0 | 26 | #define SHARE_VM_CI_CISYMBOL_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "ci/ciBaseObject.hpp" |
| aoqi@0 | 29 | #include "ci/ciObject.hpp" |
| aoqi@0 | 30 | #include "ci/ciObjectFactory.hpp" |
| aoqi@0 | 31 | #include "classfile/vmSymbols.hpp" |
| aoqi@0 | 32 | #include "oops/symbol.hpp" |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | // ciSymbol |
| aoqi@0 | 35 | // |
| aoqi@0 | 36 | // This class represents a Symbol* in the HotSpot virtual |
| aoqi@0 | 37 | // machine. |
| aoqi@0 | 38 | class ciSymbol : public ciBaseObject { |
| aoqi@0 | 39 | Symbol* _symbol; |
| aoqi@0 | 40 | |
| aoqi@0 | 41 | CI_PACKAGE_ACCESS |
| aoqi@0 | 42 | // These friends all make direct use of get_symbol: |
| aoqi@0 | 43 | friend class ciEnv; |
| aoqi@0 | 44 | friend class ciInstanceKlass; |
| aoqi@0 | 45 | friend class ciSignature; |
| aoqi@0 | 46 | friend class ciMethod; |
| aoqi@0 | 47 | friend class ciField; |
| aoqi@0 | 48 | friend class ciObjArrayKlass; |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | private: |
| aoqi@0 | 51 | const vmSymbols::SID _sid; |
| aoqi@0 | 52 | DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; } ) |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | ciSymbol(Symbol* s); // normal case, for symbols not mentioned in vmSymbols |
| aoqi@0 | 55 | ciSymbol(Symbol* s, vmSymbols::SID sid); // for use with vmSymbols |
| aoqi@0 | 56 | |
| aoqi@0 | 57 | Symbol* get_symbol() const { return _symbol; } |
| aoqi@0 | 58 | |
| aoqi@0 | 59 | const char* type_string() { return "ciSymbol"; } |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | void print_impl(outputStream* st); |
| aoqi@0 | 62 | |
| aoqi@0 | 63 | // This is public in Symbol* but private here, because the base can move: |
| aoqi@0 | 64 | const jbyte* base(); |
| aoqi@0 | 65 | |
| aoqi@0 | 66 | // Make a ciSymbol from a C string (implementation). |
| aoqi@0 | 67 | static ciSymbol* make_impl(const char* s); |
| aoqi@0 | 68 | |
| aoqi@0 | 69 | public: |
| aoqi@0 | 70 | // The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none. |
| aoqi@0 | 71 | vmSymbols::SID sid() const { return _sid; } |
| aoqi@0 | 72 | |
| aoqi@0 | 73 | // The text of the symbol as a null-terminated utf8 string. |
| aoqi@0 | 74 | const char* as_utf8(); |
| aoqi@0 | 75 | int utf8_length(); |
| aoqi@0 | 76 | |
| aoqi@0 | 77 | // The text of the symbol as ascii with all non-printable characters quoted as \u#### |
| aoqi@0 | 78 | const char* as_quoted_ascii(); |
| aoqi@0 | 79 | |
| aoqi@0 | 80 | // Return the i-th utf8 byte, where i < utf8_length |
| aoqi@0 | 81 | int byte_at(int i); |
| aoqi@0 | 82 | |
| aoqi@0 | 83 | // Tests if the symbol starts with the given prefix. |
| aoqi@0 | 84 | bool starts_with(const char* prefix, int len) const; |
| aoqi@0 | 85 | |
| aoqi@0 | 86 | // Determines where the symbol contains the given substring. |
| aoqi@0 | 87 | int index_of_at(int i, const char* str, int len) const; |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | void print_symbol_on(outputStream* st); |
| aoqi@0 | 90 | void print_symbol() { |
| aoqi@0 | 91 | print_symbol_on(tty); |
| aoqi@0 | 92 | } |
| aoqi@0 | 93 | |
| aoqi@0 | 94 | // Make a ciSymbol from a C string. |
| aoqi@0 | 95 | // Consider adding to vmSymbols.hpp instead of using this constructor. |
| aoqi@0 | 96 | // (Your code will be less subject to typographical bugs.) |
| aoqi@0 | 97 | static ciSymbol* make(const char* s); |
| aoqi@0 | 98 | |
| aoqi@0 | 99 | #define CI_SYMBOL_DECLARE(name, ignore_def) \ |
| aoqi@0 | 100 | static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); } |
| aoqi@0 | 101 | VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE) |
| aoqi@0 | 102 | #undef CI_SYMBOL_DECLARE |
| aoqi@0 | 103 | |
| aoqi@0 | 104 | void print() { |
| aoqi@0 | 105 | _symbol->print(); |
| aoqi@0 | 106 | } |
| aoqi@0 | 107 | |
| aoqi@0 | 108 | virtual bool is_symbol() const { return true; } |
| aoqi@0 | 109 | |
| aoqi@0 | 110 | // Are two ciSymbols equal? |
| aoqi@0 | 111 | bool equals(ciSymbol* obj) { return this->_symbol == obj->get_symbol(); } |
| aoqi@0 | 112 | |
| aoqi@0 | 113 | bool is_signature_polymorphic_name() const; |
| aoqi@0 | 114 | }; |
| aoqi@0 | 115 | |
| aoqi@0 | 116 | #endif // SHARE_VM_CI_CISYMBOL_HPP |
